JP6134096B2 - Information output device - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an information output device, and more specifically, a power generator that can be operated by switching between a linked operation linked to an external power system and a self-sustained operation not linked to an external power system, and a power receiving device that receives power from the external power system. A power supply system comprising a power consuming device that operates by consuming at least one of electric power and generated power generated by a power generating device, received power detecting means for detecting received power, and generated power detecting means for detecting generated power The present invention relates to an information output device used.

  There is a power supply system that includes a power generation device and a power consumption device, and at least one of received power received from an external power system and generated power generated by the power generation device is supplied to the power consumption device. In such a power supply system, the received power from the external power system, the generated power of the power generation device, the power consumption of the power consumption device, and the like are displayed to the user. For example, Patent Document 1 displays generated power, sold power to an external power system (that is, negative received power), purchased power from the external power system (that is, positive received power), and power consumption. A configured information output device (5a) is described. The power consumption among them is derived by calculating the sum of the generated power, the sold power and the purchased power in the power consumption calculation unit (6).

JP 2004-28924 A

  Patent Document 1 does not describe what kind of display the information output device performs when the external power system has a power failure. Therefore, even if the external power system is out of power or the external power system is restored after that, the information output device can generate power, sell power to the external power system, buy power from the external power system, The power consumption derived from the sum of the generated power, the sold power, and the purchased power is considered to be displayed.

When power is normally supplied from the external power system and the generator is connected to the external power system, the power consuming device generates power using the received power received from the external power system and the generator. At least one of the generated power is supplied. That is, it can be said that there is no upper limit to the power that can be consumed by the power consuming device.
On the other hand, during a self-sustaining operation in which the external power system has a power failure and the power generator is not connected to the external power system, only the generated power generated by the power generator can be supplied to the power consuming device. That is, the upper limit of the power that can be consumed by the power consuming device is limited by the capacity of the power generating device. Therefore, during a self-sustaining operation where the power generator is not connected to an external power system, the user of the information output device should be able to recognize the power that can be consumed by looking at the power consumption displayed on the information output device. is there. For example, if the rated power generation of the power generation device is 1 kW and the power consumption displayed on the information output device is 800 W, the user of the information output device can recognize that it can consume an extra 200 W of power.

By the way, when the external power system continues to operate independently after a power failure, and the external power system recovers after that, the external power system is connected via the distribution board at the same time as the power recovery. It is also conceivable that electric power starts to be supplied to a power consuming device that can receive power from the power supply. Moreover, it is not necessary to immediately switch the power generator to the interconnected operation just because the external power system has recovered. Even in such a case, that is, when the self-sustained operation state of the power generator is maintained despite the power recovery of the external power system, it is displayed on the information output device described in Patent Document 1. The consumed power is the sum of generated power and received power.
However, during self-sustaining operation where the power generator is not yet connected to the external power system, that is, in a situation where the upper limit of power that can be consumed by the power consumer is limited by the power generator's capacity, the generated power and the received power When the display is made such that the sum of the two and the power consumption is used, there is a problem that it becomes impossible to correctly recognize the power that can be consumed excessively according to the capacity of the power generation device.

  The present invention has been made in view of the above-described problems, and its purpose is to consume extra power for the user while the power generator is performing a self-sustaining operation not linked to an external power system. An object of the present invention is to provide an information output device capable of surely recognizing possible power.

In order to achieve the above object, the characteristic configuration of the information output device according to the present invention includes a power generator that can be operated by switching between a linked operation linked to an external power system and a stand-alone operation not linked to the external power system, and A power consuming device that operates by consuming at least one of the received power received from the external power system and the generated power generated by the power generation device, received power detection means for detecting the received power, and detecting the generated power An information output device used in a power supply system comprising generated power detection means
Information output means for outputting information;
Output control means for determining the content of the information to be output by the information output means and outputting the information from the information output means,
Power is supplied from the external power system to the distribution board,
The power generation device is configured such that a mode changeover switch that switches between an operation mode of the interconnection operation mode and the independent operation mode for the power generation device is switched to the interconnection operation mode. When the power generation device is connected to the external power system and connected to the distribution board, the generated power is supplied to the output terminal for connection that is connected to the distribution board. At least one of the received power and the generated power can be supplied to the power consuming device, and the power generating device is configured so that the power generating device is switched to the self-sustaining operation mode so that the power generating device During self-sustained operation not connected to the grid, by supplying the generated power to the independent output terminal not connected to the distribution board, it is not connected to the distribution board One said can supply the generated power to the power consuming device that is connected to a self-supporting for the output end,
Said output control means in the time of interconnected operation of the mode switching switch is the power generation apparatus by being switched to the interconnected operation mode is interconnection to said external power system, the received power detecting means detects The sum of the received power and the generated power detected by the generated power detection means is output from the information output means as power consumption by the power consuming device, and the mode switch is switched to the self-sustaining operation mode. in in the power generating apparatus wherein the external electric power system the time autonomous operation that is not communicating system, of the generated power which the received electric power and the generated power detecting means and the reception power detected by the detecting means detects the generated power The generated power detected by the detection means is output from the information output means as power consumption by the power consuming device. .

According to the above characteristic configuration, the power generator is connected to the distribution board at the time of connected operation in which the power generator is connected to the external power system by switching the mode changeover switch to the connected operation mode. By supplying the generated power to the system output terminal, at least one of the received power and the generated power can be supplied to the power consuming device connected to the distribution board. By switching to the operation mode, the generator is connected to the distribution board by supplying the generated power to the independent output terminal not connected to the distribution board during the independent operation where the power generator is not connected to the external power system. The generated power can be supplied to the power consuming device that is not connected to the output terminal for self-supporting.
When the output control means is connected to the external power system by switching the mode switch to the connected operation mode, the sum of the received power and the generated power is used as the power consumption. By outputting the information from the information output means, the user of the information output device can be made sure of the actual power consumption. Further, when the output control means is in a self-sustained operation in which the mode changeover switch is switched to the self-sustained operation mode and the power generation device is not linked to the external power system, the received power and the generated power detection means detected by the received power detection means are of the detected generated power, only the power generated by the power generation detecting unit detects the power generation device, by output from the information output means as power consumption, to the user of the information output apparatus, connected to a self-supporting for output It is possible to reliably recognize the power consumption of the power consuming apparatus, and to recognize the power that can be consumed excessively. In particular, even if the value of the received power increases due to the recovery of power from the external power system, the output control means will receive the increased power reception due to the recovery of power from the external power system while the power generator is operating independently. Without including the power in the derivation of the power consumption, the generated power of the power generator is output as the power consumption from the information output means.
Accordingly, an information output device that can make the user of the information output device reliably recognize the power that can be consumed excessively while the power generation device is performing independent operation not linked to the external power system. Can be provided .
Another characteristic feature of the information output device according to the present invention, the output control means, before Killen system during operation, the reception power of the reception power detected by the detecting means, receiving power received from the external electric power system Output from the information output means, and the generated power detected by the generated power detection means is output from the information output means as generated power generated by the power generator, and the received power detected by the received power detection means the generated power detecting means is outputted from the information output means as the power consumption by the connected said power consuming device to the distribution board the sum of the generated power detected by, and, before Symbol own stand during operation and The received power detected by the received power detection means is output from the information output means as received power received from the external power system, and the generated power detection is performed. The generated power detected by the means is output from the information output means as generated power generated by the power generation device, and the received power detected by the received power detection means and the generated power detected by the generated power detection means. Among these, the generated power detected by the generated power detection means is output from the information output means as power consumption by the power consuming device connected to the self-sustained output terminal.
According to the above characteristic configuration, the output control means causes the information output means to output the received power detected by the received power detection means as the received power received from the external power system during the interconnected operation, and the generated power detection means detects the received power. The generated power is output from the information output means as generated power generated by the power generator, and the sum of the received power detected by the received power detection means and the generated power detected by the generated power detection means is connected to the distribution board. It is possible to output from the information output means as power consumption by the power consuming apparatus. Further, the output control means, when the self-standing operation, the received power of the received power detected by the detecting means is outputted from the information outputting means as a receiving power received from the external electric power system, the generated power is generated power detecting means has detected, Output from the information output means as the generated power generated by the power generator, and the generated power detected by the generated power detection means out of the received power detected by the received power detection means and the generated power detected by the generated power detection means. It can be made to output from an information output means as power consumption by the power consuming apparatus connected to the end.

Another characteristic feature of the information output device according to the present invention, the output control means, when the reception power detection means detects the reception power of a predetermined value or more during the autonomous operation, power supply from the external electric power system Is output from the information output means.

  According to the above characteristic configuration, the output control means causes the information output means to output that power is being supplied from the external power system, that is, that the external power system has been restored. That is, it is possible to notify the user of the information output device that it is the timing at which the power generation device can be switched from the independent operation to the grid interconnection operation.

  Still another characteristic configuration of the information output apparatus according to the present invention is that the information output means outputs information using at least one of characters and voices.

  According to the above characteristic configuration, the user of the information output device can be surely recognized by using at least one of characters and voices.

The figure explaining the structure of the electric power supply system provided with an information output device Flow chart explaining operation of power generation device and exhaust heat recovery device The figure which shows the example of a display screen of an information output means

A power supply system provided with the information output device 16 of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of a power supply system provided with an information output device. The power supply system includes a power generation device 20 that can be operated by switching between a linked operation linked to the external power grid 1 and a self-sustaining operation not linked to the external power grid 1, received power and power generated from the external power grid 1 The power consumption device 14 that operates by consuming at least one of the generated power generated by the device 20, the received power detection means Wa that detects the received power, and the generated power detection means Wb that detects the generated power.
Hereinafter, after describing the configuration of the power supply system, the contents of control performed in the power supply system and the operation of the information output device 16 will be described.

[House 10]
In the house 10, a distribution board 11, a power consuming device 14, and a heat utilization device 13 to which power is supplied from the external power system 1 are installed. When power is normally supplied from the external power system 1, power is supplied to the power consuming device 14 via the distribution board 11. Moreover, the generator 22 of the power generator 20 can be connected to the distribution board 11 as will be described later. When power is normally supplied from the external power system 1, the power generated by the generator 22 is supplied to the distribution board 11. That is, the interconnection operation in which the generator 22 is linked to the external power system 1 is performed. A power consuming device 14A, an indoor electrical outlet 15, and an outdoor electrical outlet 4 are electrically connected to the distribution board 11. Various electric power consumption devices 14 installed in the house 10 can be connected to the indoor electrical outlet 15. In the example illustrated in FIG. 1, the power consuming device 14 </ b> B is illustrated as the power consuming device 14 that can be connected to the indoor electrical outlet 15. The power consuming device 14 </ b> B is electrically connected to the electrical plug 7, and can be supplied with power via the distribution board 11 by attaching the electrical plug 7 to the indoor electrical outlet 15.

  In the present embodiment, the power consuming device 14A is a device that may interrupt the power supply when the power supply via the distribution board 11 is interrupted (that is, when the external power system 1 fails). For example, some lighting devices). The power consuming device 14B is a device (for example, a refrigerator or some lighting devices) that requires power supply even when power supply via the distribution board 11 is interrupted. Note that the user can appropriately change which device is classified as the power consuming device 14A or the power consuming device 14B.

  In the present embodiment, the heat utilization device 13 includes a bathroom heating / drying device 13A, a floor heating device 13B, and a hot water supply device 13C. As will be described later, these devices use the heat supplied from the exhaust heat recovery device 40 to exhibit a bathroom heating drying function, a floor heating function, and a hot water supply function. Moreover, the bathroom heating / drying apparatus 13A requires electric power to operate an electric device such as a fan for supplying air. In the present embodiment, such a bathroom heating / drying apparatus 13A is an electric power consumption type heat utilization apparatus E that enables the user to use heat by operating while consuming electric power.

  The house 10 is provided with an information output device 16. The information output device 16 includes an information output unit 16A that outputs information, and an output control unit 16B that determines the content of information output by the information output unit 16A and outputs the content from the information output unit 16A. Further, using the operation input unit 16C included in the information output device 16, an instruction (for example, an operation start instruction / operation stop instruction) regarding the operation of the power generation apparatus 20 and the heat utilization apparatus 13 can be performed. The information output means 16A can be constituted by, for example, a display unit capable of outputting information characters or a speaker capable of outputting information sounds. Then, the output control means 16B can output various information handled by the information output device 16 on the display unit serving as the information output means 16A, or output the sound using a speaker serving as the information output means 16A.

In addition, the output control means 16B can output the received power and power consumption in the house 10, the generated power of the power generation apparatus 20, and the like using the information output means 16A.
For example, the received power detection means Wa and the generated power detection means Wb1 and Wb2 can be realized using a current sensor and a voltage sensor. Then, the current value and the voltage value detected by the current sensor and the voltage sensor are transmitted to the power generation operation control unit 29, so that the power generation operation control unit 29 can derive each of the received power and the generated power. In the present embodiment, the received power detection means Wa performs detection on the upstream side of the distribution board 11 (external power system 1 side), and the detection result is transmitted to the power generation operation control unit 29 of the power generator 20 via a communication line. 9 is transmitted. Power generation based on the value of the received power acquired by the power generation operation control unit 29 based on the detection result of the received power detection means Wa and the detection results of the generated power detection means Wb1 (Wb) and the generated power detection means Wb2 (Wb) The value of the generated power acquired by the operation control unit 29 is transmitted to the exhaust heat recovery control unit 45 of the exhaust heat recovery device 40 via the communication line 3. Then, the value of the received power detected by the received power detection means Wa, the generated power detection means Wb1 (Wb), and the generated power detection means Wb2 from the exhaust heat recovery control unit 45 to the output control means 16B of the information output device 16. The value of the generated power detected by (Wb) is transmitted via the communication line 8, and the output control means 16B causes the information output means 16A to output information such as received power, generated power, and consumed power. Alternatively, the exhaust heat recovery control unit 45 may directly instruct the information output unit 16A to output the information.
Details of display control of received power, generated power, and power consumption performed by the information output device 16 will be described later.

[Power generation device 20]
The power generation device 20 includes an engine 21, a generator 22 driven by the engine 21, and a power generation operation control unit 29 that controls the operation of the engine 21 and the generator 22. The engine 21 is provided with a manually operated starter device 23. When starting up the power generator 20 at the time of a system power failure, the mode changeover switch for switching which operation mode the user allows the power generator 20 to operate in the grid operation mode or the independent operation mode (see FIG. The engine 21 and the generator 22 are started by operating the starter device 23 manually after switching the power generation device 20 to the self-sustaining operation mode by operating (not shown). In the state where the mode changeover switch is switched to the interconnection operation mode, the power generation device 20 is not started by the starter device 23, and the operation control command (operation start command, operation stop command, etc.) from the exhaust heat recovery control unit 45 is used. ) The generator 22 is provided with two output terminals for outputting generated power. One is a connection output terminal 27 used when supplying power generation output to the distribution board 11 of the house 10 during operation in the connection operation mode, and the other is power generation during operation in the self-sustaining operation mode. This is a self-supporting output end 28 used when supplying output to the indoor electrical outlet 12. In the present embodiment, the output terminal 28 for self-supporting is connected to the indoor electrical outlet 12 inside the house 10 and the outdoor electrical outlet 5 outside the house 10.

  The engine 21 is configured to be cooled by engine cooling water. In the present embodiment, the engine cooling water circulates through the engine 21 and the heat exchanger 24 in order through the cooling water circulation path 25. A cooling water pump 26 is provided in the middle of the cooling water circulation path 25, and the flow rate of the engine cooling water in the cooling water circulation path 25 is adjusted according to the operation of the cooling water pump 26. In the heat exchanger 24, heat is transferred from the engine cooling water to the hot water by exchanging heat between hot water and engine cooling water, which will be described later.

[Exhaust heat recovery device 40]
The exhaust heat recovery device 40 is a heat recovery operation for recovering exhaust heat from the engine 21 and heat for operating the power consumption heat utilization device E by supplying the heat recovered from the engine 21 to the power consumption heat utilization device E. An exhaust heat recovery control unit 45 that controls the supply operation is provided. In the present embodiment, the exhaust heat recovery device 40 includes a hot water storage device 41 as a heat storage device that recovers and stores the exhaust heat from the engine 21. The hot water storage device 41 stores hot water, which is heated by the heat exchanger 24 through the exhaust heat recovery path 42 and returns to the hot water storage device 41 again. An exhaust heat recovery pump 43 is provided in the middle of the exhaust heat recovery path 42, and the flow rate of hot water in the exhaust heat recovery path 42 is adjusted according to the operation of the exhaust heat recovery pump 43.

In both cases where the power generation device 20 is operated in an interconnected manner and when it is operated independently, the engine 21 of the power generation device 20 is cooled, that is, the exhaust heat of the engine 21 is recovered by the exhaust heat recovery device 40. is necessary. Therefore, the exhaust heat recovery control unit 45 performs the heat recovery operation for recovering the exhaust heat from the engine 21 both during the interconnection operation of the power generation apparatus 20 and during the independent operation. Do.
Further, if heat is stored in the hot water storage device 41, the exhaust heat recovery control unit 45 can supply the heat stored in the hot water storage device 41 to the heat utilization device 13 to operate the heat utilization device 13. it can. 1 shows a configuration example in which exhaust heat from the engine 21 is recovered and temporarily stored in the hot water storage device 41, and the heat stored in the hot water storage device 41 is supplied to the heat utilization device 13. However, piping, valves, heat exchangers, and the like may be configured so that the heat recovered from the engine 21 can be supplied to the heat utilization device 13 without passing through the hot water storage device 41. Specifically, the exhaust heat recovery control unit 45 operates such that hot water heated by the heat recovered from the engine 21 flows into the hot water storage device 41, and hot water heated by the heat recovered from the engine 21. May be configured such that a pipe, a valve, a heat exchanger, and the like can be selectively switched from the operation mode in which the heat is supplied to the heat utilization device 13 without flowing into the hot water storage device 41.

  The hot water storage device 41 is configured such that a relatively high temperature hot water is stored in an upper portion thereof, a relatively low temperature hot water is stored in a lower portion thereof, and temperature stratification is formed inside the hot water storage device 41. . The temperature of the hot water in the upper part of the hot water storage device 41 can be detected by the temperature sensor T1, the temperature of the hot water in the intermediate part of the hot water storage device 41 can be detected by the temperature sensor T2, and the temperature of the hot water in the lower part of the hot water storage device 41 is the temperature. It can be detected by the sensor T3. The detection results of the temperature sensors T1 to T3 are transmitted to the exhaust heat recovery control unit 45. Usually, the temperature of the hot water detected by the temperature sensor T1 is the highest, and the temperature of the hot water detected by the temperature sensor T2 and the temperature of the hot water detected by the temperature sensor T3 are sequentially decreased. The exhaust heat recovery control unit 45 determines that the heat stored in the hot water storage device 41 is full when all of the hot water temperatures detected by the temperature sensors T1 to T3 are equal to or higher than the set upper limit temperature. When the heat stored in the hot water storage device 41 is full, the temperature of the hot water supplied from the hot water storage device 41 to the heat exchanger 24 becomes equal to or higher than the set upper limit temperature. That is, the engine cooling water cannot be cooled well by heat exchange in the heat exchanger 24, and as a result, the engine 21 may not be cooled well.

The hot water storage device 41 is provided with a pressure sensor L that can detect the pressure of the hot water stored in the hot water storage device 41. The detection result of the pressure sensor L is transmitted to the exhaust heat recovery control unit 45. In the present embodiment, the hot water storage device 41 is configured as a sealed tank, and clean water is supplied from a water supply path (not shown) so as to keep the pressure of the hot water stored in the hot water storage device 41 at or above a set pressure value. For this reason, when water breakage or the like occurs and it becomes impossible to supply clean water, the pressure of hot water stored in the hot water storage device 41 decreases. Therefore, when the pressure of the hot water in the hot water storage device 41 detected by the pressure sensor L becomes less than the set pressure, the exhaust heat recovery control unit 45 determines that an abnormality such as a water outage has occurred. When such an abnormality occurs, the heat recovery operation and the heat supply operation in the exhaust heat recovery device 40 are hindered.
A flow rate sensor M capable of detecting a flow rate that is the amount of hot water flowing per unit time is provided in the middle of the exhaust heat recovery path 42. The detection result of the flow sensor M is transmitted to the exhaust heat recovery control unit 45. When the flow rate of hot water detected by the flow rate sensor M becomes less than the set lower limit flow rate, the exhaust heat recovery control unit 45 detects malfunctions such as malfunction of the exhaust heat recovery pump 43 and water leakage / blockage in the exhaust heat recovery path 42. It is determined that it has occurred. When such an abnormality occurs, the heat recovery operation in the exhaust heat recovery device 40 is hindered.
As described above, the pressure sensor L and the flow rate sensor M function as an abnormality detection unit that can detect an abnormality in the heat recovery operation in the exhaust heat recovery apparatus 40 or an abnormality in the heat supply operation.

Since the exhaust heat recovery apparatus 40 includes the above-described exhaust heat recovery pump 43, for example, the operation requires electric power. Therefore, the exhaust heat recovery apparatus 40 has a power connection terminal block 44 that can be connected to a power supply source, and operates using the power supplied to the power connection terminal block 44. An electric plug 6 is electrically connected to a power connection terminal block 44 provided in the exhaust heat recovery device 40. By attaching the electric plug 6 to the outdoor electric outlets 4 and 5 to which power is supplied. Power is supplied to the power connection terminal block 44 (ie, by connecting the power supply source and the power connection terminal block 44).
Furthermore, in the present embodiment, the bathroom heating / drying device 13 </ b> A as the power consuming heat utilization device E is electrically connected to the power connection terminal block 44. That is, the bathroom heating / drying apparatus 13 </ b> A operates by consuming electric power supplied via the power connection terminal block 44.

As described above, the outdoor electric outlet 4 and the indoor electric outlet 15 are the electric power supplied from the external electric power system 1 and the electric generator 22 during the interconnection operation in which the electric generator 22 is connected to the external electric power system 1. It functions as an electrical terminal for interconnection operation to which at least one of the generated electric power is supplied.
Moreover, the outdoor electrical outlet 5 and the indoor electrical outlet 12 are electrical terminals for independent operation to which electric power generated by the generator 22 is supplied during the autonomous operation in which the generator 22 is not linked to the external power system 1. Function as.
The electrical plug 6 connected to the power connection terminal block 44 functions as a connection terminal that can be selectively connected to the electrical terminal for interconnection operation and the electrical terminal for independent operation.

  The exhaust heat recovery device 40 can communicate information with the heat utilization device 13 via the communication line 2 and can communicate information with the power generation device 20 via the communication line 3. Can communicate with each other via the communication line 8. The power supply to the information output device 16 is performed from the exhaust heat recovery device 40 using the communication line 8. That is, the information output device 16 is also one of devices that operate using the power supplied to the power connection terminal block 44 of the exhaust heat recovery device 40.

[Power consumption type heat utilization device E]
Next, the operation control of the bathroom heating / drying apparatus 13A as the power consuming type heat utilization apparatus E that enables the user to use heat by consuming electric power and operating will be described.

  In both cases where the power generation device 20 is operated in an interconnected manner and when it is operated independently, the engine 21 of the power generation device 20 is cooled, that is, the exhaust heat of the engine 21 is recovered by the exhaust heat recovery device 40. is necessary. Note that just by recovering the exhaust heat of the engine 21 by the exhaust heat recovery device 40, the amount of heat stored in the hot water storage device 41 is increasing. Therefore, in this embodiment, when the heat recovery control unit 45 detects that the power generation operation control unit 29 has started the self-sustained operation of the power generation device 20, while the self-sustained operation of the power generation device 20 is being performed, Regardless of the amount of heat stored in the hot water storage device 41, heat is supplied from the hot water storage device 41 to the power consuming heat utilization device E to operate the power consuming heat utilization device E.

  Specifically, the exhaust heat recovery control unit 45 determines whether or not the power generation device 20 is operating in the self-sustained operation mode, and can detect that the self-sustained operation of the power generation device 20 has been started. Regardless of the amount of heat stored in the device 41, heat is supplied from the hot water storage device 41 to the bathroom heating / drying device 13A as the power consuming heat utilization device E to operate. By performing such operation control, it is possible to prevent the heat stored in the hot water storage device 41 from becoming full, so that the engine cooling water can be cooled well, and as a result, the engine 21 can be cooled well. .

  Alternatively, the exhaust heat recovery control unit 45 does not cause the operation of the bathroom heating / drying device 13A as the above-described power consumption type heat utilization device E regardless of the heat storage amount in the hot water storage device 41, but the exhaust heat recovery control unit. 45, while the self-sustaining operation of the power generator 20 is being performed, if the amount of heat stored in the hot water storage device 41 exceeds the set upper limit value, the hot water storage device 41 changes to the bathroom heating / drying device 13A as the power consuming heat utilization device E. You may make it operate the bathroom heating drying apparatus 13A by supplying heat. By performing such operation control, the hot water storage device 41 can store as much heat as possible, and the heat stored in the hot water storage device 41 can be less than the set upper limit. As a result, it is possible to cool the engine 21 satisfactorily while collecting a lot of heat in the hot water storage device 41 by collecting exhaust heat from the engine 21.

  Next, regarding the operation of the power generation device 20 and the exhaust heat recovery device 40 in a state where power supply from the external power system 1 is normally performed and a state where power supply from the external power system 1 is stopped, The operation of the information output device 16 will be described. FIG. 2 is a flowchart for explaining operations of the power generation device 20 and the exhaust heat recovery device 40. FIG. 3 shows that when power is supplied from the external power system 1 and the power generation apparatus 20 is connected (FIG. 3A), the external power system 1 fails and the power generation apparatus 20 is operated independently. Information output means 16A in each case (FIG. 3 (b)), when the external power system 1 is restored and power is supplied and the power generator is operating independently (FIG. 3 (c)). It is an example of a display screen.

  First, the outline will be described. The power generation operation control unit 29 of the power generation apparatus 20 is configured so that the exhaust heat recovery control unit 45 of the exhaust heat recovery apparatus 40 is connected during the interconnection operation in which the generator 22 is connected to the external power system 1. It operates in a linked operation mode in which operation control of the engine 21 and the generator 22 is performed according to an operation control command including an operation start command and an operation stop command given to the power generation device 20 according to a predetermined operation plan, and the generator The exhaust heat recovery control unit 45 controls the power generation device 20 while performing the operation control for continuously operating the engine 21 and the generator 22 without stopping the engine 21 and the generator 22 during the self-sustaining operation in which the power supply 22 is not connected to the external power system 1. It operates in a self-sustaining operation mode in which the operation of the engine 21 and the generator 22 is stopped in response to an emergency stop command to be given.

  Specifically, in step # 10, the exhaust heat recovery control unit 45 determines whether or not the power generation device 20 is in operation. The exhaust heat recovery control unit 45 proceeds to step # 12 when it is determined that the power generation device 20 is in operation, and proceeds to step # 24 when it is determined that the power generation device 20 is stopped. The fact that the exhaust heat recovery control unit 45 can perform such determination processing means that electric power is supplied to the exhaust heat recovery device 40. In other words, power is supplied to the power connection terminal block 44 of the exhaust heat recovery apparatus 40 via the outdoor electrical outlet 4 or the outdoor electrical outlet 5. Note that whether the electric plug 6 connected to the power connection terminal block 44 is attached to the outdoor electric outlet 4 or the outdoor electric outlet 5 is selected by the user, and the exhaust heat recovery device 40 is an electric plug. It cannot be determined whether 6 is attached to the outdoor electrical outlet 4 or the outdoor electrical outlet 5.

[In connected operation]
When the power supply from the external power system 1 is normally performed, at least power from the external power system 1 is supplied to the distribution board 11, and if the generator 22 is operating, the generator 22 also Power is supplied. In this case, the user has connected the electrical plug 6 to the outdoor electrical outlet 4, and as a result, the exhaust heat recovery device 40 has at least the power supplied from the external power system 1 and the power generated by the generator 22. One supply can be received. That is, when the power supply from the external power system 1 is normally performed, the exhaust heat recovery device 40 is always supplied with power, and the determination of the step # 10 shown in FIG. 2 can be performed. However, the exhaust heat recovery control unit 45 performs an operation control of the engine 21 and the generator 22 according to an operation control command including an operation start command and an operation stop command given to the power generation device 20 according to a predetermined operation plan. Operates in operation mode. Therefore, when the power supply from the external power system 1 is normally performed, the engine 21 and the generator 22 of the power generation apparatus 20 may be stopped in accordance with a predetermined operation plan.

  FIG. 3A shows an example of a display screen of the information output means 16A when power is supplied from the external power system 1 described here and the power generation apparatus 20 is operated in an interconnected manner. In the current status display column 16Ad, “Purchasing” is displayed, indicating that power is supplied from the external power system 1 (that is, power is purchased). The received power display column 16Aa displays purchased power (ie, received power) of “2.0 kW”, and the generated power display column 16Ab displays generated power from the power generator 20 of “1.0 kW”. In the power consumption display column 16Ac, the used power (that is, power consumption) of “3.0 kW” is displayed. In this way, the output control means 16B is configured so that the received power detected by the received power detection means Wa and the generated power detection means Wb1 (Wb) during the interconnection operation in which the power generation device 20 is linked to the external power system 1. The sum of the detected generated power is output from the information output means 16 </ b> A as the power consumption by the power consuming device 14. By displaying such information, the user of the information output device 16 can surely recognize the actual power consumption.

[When a power failure occurs]
When the power supply from the external power system 1 is normally performed and the power supply from the external power system 1 is not normally performed (that is, when a power failure occurs in the external power system 1) ) The power generation operation control unit 29 stops the operation of the engine 21 and the generator 22. As a result, no power is supplied to the indoor unit, the power generation device 20 and the exhaust heat recovery device 40. In addition, the electric power generating apparatus 20 becomes a structure which can be operated independently. For example, first, the user attaches the electrical plug 6 to the outdoor electrical outlet 5, and the power connection terminal block 44 of the exhaust heat recovery device 40 is electrically connected to the self-sustained output end 28 of the generator 22. Like that. Further, the user attaches the electric plug 7 to the indoor electric outlet 12 so that the power consuming device 14 </ b> B is electrically connected to the self-sustained output end 28 of the generator 22.
Thereafter, the user manually operates the starter device 23 after switching the power generation device 20 to a state in which the operation in the self-sustained operation mode is permitted using the mode changeover switch (not shown). The power generator 22 is activated and the power generation operation (independent operation) of the power generator 22 is started. As a result, power supply to the power connection terminal block 44 of the exhaust heat recovery device 40 is started, and power supply to the power consumption device 14B is started. That is, in this case, since the power is supplied to the exhaust heat recovery device 40 as a result of the power generation device 20 being activated, in the step # 10 in which power is supplied to the exhaust heat recovery device 40, power generation is performed. The device 20 is always in operation.

  FIG. 3B is an example of a display screen of the information output means 16A when the external power system 1 described here is out of power and the power generation apparatus 20 is operating independently. In the current status display column 16Ad, “Under power failure” is displayed, indicating that power is not being supplied from the external power system 1, and the received power display column 16Aa is “0.0 kW” of purchased power (ie, , Received power) is displayed. In addition, the generated power from the power generation device 20 “0.8 kW” is displayed in the generated power display field 16Ab, and the used power (that is, power consumption) “0.8 kW” is displayed in the power consumption display field 16Ac. ing. Thus, the output control means 16B consumes only the generated power detected by the generated power detecting means Wb2 (Wb) by the power consuming apparatus 14 during the self-sustaining operation in which the power generating apparatus 20 is not linked to the external power system 1. The information is output from the information output means 16A as electric power. By displaying such information, the user of the information output device 16 can surely recognize the power consumption and can recognize the power that can be consumed excessively. For example, if the rated generated power of the power generation device 20 is 1 kW, the user of the information output device 16 can recognize that an extra 0.2 kW of power can be consumed.

  Further, the exhaust heat recovery control unit 45 communicates an inquiry about whether it is operating in the grid operation mode or the independent operation mode to the power generation operation control unit 29 of the power generation device 20 at an appropriate timing. This is done via line 3. On the other hand, the power generation operation control unit 29 transmits to the exhaust heat recovery control unit 45 via the communication line 3 whether it is operating in the interconnection operation mode or the autonomous operation mode. Specifically, the power generation operation control unit 29 switches the mode changeover switch (not shown) described above to the power generation apparatus 20 in any operation mode of the interconnection operation mode and the independent operation mode. Recognizes whether movement is allowed. As a result, the power generation operation control unit 29 can immediately make an answer when there is an inquiry from the exhaust heat recovery control unit 45 about the interconnection operation mode or the independent operation mode.

  Further, the exhaust heat recovery control unit 45 stores, in its own internal memory (not shown) or the like, information on whether the power generation device 20 is operating in the interconnection operation mode or the independent operation mode. deep. By doing so, the exhaust heat recovery control unit 45 can perform operation control of the exhaust heat recovery device 40 depending on whether the power generation operation control unit 29 is operating in the grid operation mode or the independent operation mode. it can. For example, when the power generation device 20 is operating in the interconnected operation mode, the exhaust heat recovery control unit 45 gives an operation control command including an operation start command and an operation stop command to the power generation device 20 according to a predetermined operation plan. The operation control is performed. Further, when the power generation device 20 is operating in the self-sustaining operation mode, the exhaust heat recovery control unit 45 recovers heat recovered from exhaust heat from the power generation device 20 (engine 21) that performs the power load following operation as described later. Operation and control are performed such that heat recovered from the operation and power generation apparatus 20 is supplied to the power consuming heat utilization apparatus E to operate the power consuming heat utilization apparatus E.

If the exhaust heat recovery control unit 45 determines in step # 10 that the power generation device 20 is not in operation, in step # 24, whether or not the operation start timing of the power generation device 20 is based on the operation plan as described above. Determine. Then, when it is the operation start timing of the power generation device 20, the exhaust heat recovery control unit 45 proceeds to step # 26 to start the operation of the power generation device 20, and then in step # 28, the power generation device according to a predetermined operation plan. 20 is operated for power generation. Although not shown in FIG. 2, the exhaust heat recovery control unit 45 may transfer control to step # 18 described later, following step # 28.
On the other hand, if the exhaust heat recovery control unit 45 determines in step # 24 that it is not the operation start timing of the power generation apparatus 20, the process returns to the beginning of this flowchart.

  If the exhaust heat recovery control unit 45 determines in step # 10 that the power generation device 20 is operating, in step # 12, the power generation device 20 is operating in the interconnected operation mode or operated in the self-sustaining operation mode. Judge whether it is. In step # 12, the exhaust heat recovery control unit 45 proceeds to step # 14 when the power generation device 20 is operating in the self-sustaining operation mode, and when the power generation device 20 is operating in the grid operation mode. To step # 28. The power generation device 20 performs a power load following operation while operating in the self-sustaining operation mode. As a result, the house 10 can use the power supplied from the generator 22 even if the power supply from the external power system 1 is not normally performed.

  In step # 14 (that is, in a state where the power generation device 20 performs the power load following operation in the self-sustaining operation mode), the exhaust heat recovery control unit 45 performs a heat recovery operation for recovering the exhaust heat from the engine 21. Further, the exhaust heat recovery control unit 45 can also perform a heat supply operation for supplying the heat recovered from the engine 21 to the power consumption heat utilization apparatus E and operating the power consumption heat utilization apparatus E. Specifically, the exhaust heat recovery control unit 45 supplies the heat recovered from the engine 21 and stored in the hot water storage device 41 to the power consumption type heat utilization device E to operate the power consumption type heat utilization device E. Heat supply operation can be performed. As described above, the hot water heated by the heat recovered from the engine 21 flows into the hot water storage device 41, and the hot water heated by the heat recovered from the engine 21 is the hot water storage device 41. When the operation mode is such that the operation mode supplied to the heat utilization device 13 without being routed can be selectively switched, the exhaust heat recovery control unit 45 passes the heat collected from the engine 21 via the hot water storage device 41. It is also possible to perform a heat supply operation in which the power consumption type heat utilization apparatus E is supplied to operate the power consumption type heat utilization apparatus E.

  The heat supply operation will be further described. For example, when the exhaust heat recovery control unit 45 can detect that the self-sustained operation of the power generation apparatus 20 has been started, the heat recovery operation described above regardless of the amount of heat stored in the hot water storage device 41. And heat supply operation. That is, the exhaust heat recovery control unit 45 performs a heat recovery operation for recovering exhaust heat from the engine 21 and the engine 21 regardless of the amount of heat stored in the hot water storage device 41 while the power generation device 20 is operating independently. The heat recovered from the water and stored in the hot water storage device 41 is supplied to the power consumption heat utilization device E, or the heat recovered from the engine 21 is supplied to the power consumption heat utilization device E without passing through the hot water storage device 41. Both of the heat supply operation for operating the power consumption type heat utilization apparatus E are performed. By performing such an operation control, an operation for reducing the heat stored in the hot water storage device 41 or an operation for preventing new heat from being stored in the hot water storage device 41 is performed. It is possible to avoid the stored heat from becoming full. As a result, the engine coolant can be cooled well, and the engine 21 can be cooled well.

  Alternatively, the exhaust heat recovery control unit 45 does not cause the bathroom heating / drying device 13 </ b> A as the above-described power consumption type heat utilization device E to operate regardless of the amount of heat stored in the hot water storage device 41, but is independent of the power generation device 20. While the operation is being performed, both the heat recovery operation and the heat supply operation described above may be performed when the amount of heat stored in the hot water storage device 41 is equal to or greater than the set upper limit value. That is, the exhaust heat recovery control unit 45 recovers the exhaust heat from the engine 21 when the heat storage amount in the hot water storage device 41 is equal to or higher than the set upper limit value while the power generation device 20 is being operated independently. Then, the heat recovered from the engine 21 and stored in the hot water storage device 41 is supplied to the electric power consumption type heat utilization device E, or the heat recovered from the engine 21 is not passed through the hot water storage device 41. You may perform both with the heat supply operation which supplies to E and operates the electric power consumption type heat utilization apparatus E. By performing such operation control, the hot water storage device 41 can store as much heat as possible about the set upper limit value, and when the heat storage amount in the hot water storage device 41 exceeds the set upper limit value, the hot water storage device 41 stores the heat. Since the operation for reducing the heat being stored or the operation for not newly storing heat in the hot water storage device 41 is performed, the heat stored in the hot water storage device 41 can be prevented from greatly exceeding the set upper limit. . As a result, it is possible to cool the engine 21 satisfactorily while collecting a lot of heat in the hot water storage device 41 by collecting exhaust heat from the engine 21.

  During the self-sustaining operation of the power generation device 20 as described above, regardless of the amount of heat stored in the hot water storage device 41 or when the amount of heat stored in the hot water storage device 41 exceeds the set upper limit value, the power consumption from the hot water storage device 41 is consumed. An electric power load is generated by performing a heat supply operation for supplying heat to the bathroom heating / drying device 13A as the mold heat utilization device E and operating the bathroom heating / drying device 13A. Further, in the exhaust heat recovery device 40, for example, an electric load is generated in order to operate the exhaust heat recovery pump 43 in the heat recovery operation. In addition, there is a case where the electric plug 7 is attached to the indoor electric outlet 15 and a power load is generated in the power consuming device 14B. It is preferable to supply sufficient power to such a power load. Therefore, the power generation operation control unit 29 is configured such that the generator 22 is connected to the exhaust heat recovery device 40, the power consumption device 14, and the power consumption type heat during the self-sustaining operation where the generator 22 is not linked to the external power system 1. Operation control (that is, power load follow-up control) for continuously generating power corresponding to the power load of the utilization device E is performed.

  Thus, even when a power failure occurs in the external power system 1, the power to the house 10 and the exhaust heat recovery device 40 can be obtained by operating the generator 22 independently without being connected to the external power system 1. Supply can be made. In particular, in the present embodiment, the power generation operation control unit 29 performs operation control for continuously operating the generator 21 and the generator 22 without stopping them during the self-sustaining operation in which the generator 22 is not linked to the external power system 1. Therefore, it is possible to continue using the desired electrical equipment during a power failure in the external power system 1. In addition, the exhaust heat recovery device 40 can receive supply of electric power generated by the generator 22 during the self-sustained operation of the generator 22, so that exhaust heat recovery from the engine 21, that is, cooling of the engine 21 can be performed. Can be done. Furthermore, since the electric power consumption type heat utilization apparatus E can receive supply of the electric power generated by the generator 22 during the self-sustaining operation of the generator 22, the operation using the heat stored in the exhaust heat recovery apparatus 40 is also possible. Can continue. That is, it is possible to avoid a situation in which the heat stored in the exhaust heat recovery device 40 is full and exhaust heat cannot be recovered from the engine 21, that is, the engine 21 cannot be cooled well.

  Next, in step # 16, the exhaust heat recovery control unit 45 determines whether or not the external power system 1 has recovered. As described above, in the present embodiment, the received power detection means Wa detects the received power upstream of the distribution board 11 (external power system 1 side), and the detection result is the power generation operation control of the power generator 20. Is transmitted to the unit 29 via the communication line 9, and further transmitted to the exhaust heat recovery control unit 45 of the exhaust heat recovery device 40 via the communication line 3. As a result, the exhaust heat recovery control unit 45 can determine that the external power system 1 has recovered when the received power detection means Wa detects the received power equal to or greater than a predetermined value. Then, the exhaust heat recovery control unit 45 proceeds to step # 30 when it is determined that the external power system 1 has recovered, and when it is determined that the external power system 1 has not recovered power, the process # 18. Migrate to

  Then, when it is determined that the external power system 1 has recovered, the exhaust heat recovery control unit 45 proceeds to step # 30 and notifies the house 10 that the external power system 1 has recovered. Specifically, the exhaust heat recovery control unit 45 transmits to the information output device 16 that the external power system 1 has been restored via the communication line 8, and from the information output means 16A of the information output device 16, Information that the external electric power system 1 has recovered is notified.

FIG. 3C is an example of a display screen of the information output means 16A when the external power system 1 is restored to supply power and the power generation apparatus 20 is still operating independently. “Current recovery” is displayed in the current status display column 16Ad, indicating that the power generation apparatus 20 is operating independently even though the external power system 1 is recovered and supplied with power. . In this case, a voice message such as “power is restored” may be output by a speaker as the information output means 16A.
In addition, the purchased power (that is, received power) “0.2 kW” is displayed in the received power display column 16Aa. This received power is the power consuming device 14A that is directly connected to the distribution board 11. Is not the power consumed by the power consuming device 14 electrically connected to the self-sustained output end 28 of the generator 22. In addition, the generated power from the power generation device 20 “0.8 kW” is displayed in the generated power display field 16Ab, and the used power (that is, power consumption) “0.8 kW” is displayed in the power consumption display field 16Ac. ing.

  Thus, the output control means 16B consumes only the generated power detected by the generated power detecting means Wb2 (Wb) by the power consuming apparatus 14 during the self-sustaining operation in which the power generating apparatus 20 is not linked to the external power system 1. The information is output from the information output means 16A as electric power. In particular, even if the value of the received power increases due to the power recovery of the external power system 1, the output control means 16B indicates that the power of the external power system 1 has been recovered while the power generation device 20 is operating independently. The generated power of the power generator 20 is output from the information output means 16A as the power consumption without including the received power increased in step S5 in the derivation of the power consumption. As a result, even when the external power system 1 has already recovered power, even if the upper limit of power consumption is limited to, for example, less than the rated generated power of the power generator 20, the rating of the power generator 20 The power that can be consumed in excess of the generated power can be recognized.

  As described above, when the information output unit 16A of the information output device 16 notifies the information indicating that the external power system 1 has recovered, the user who has received the notification notifies the power generation device 20 and the heat utilization device. 13 is stopped, and then the electric plug 6 is reattached to the outdoor electric outlet 4 and the electric plug 7 is reattached to the indoor electric outlet 15, so that the power consuming device 14 of the house 10 is At least power from the external power system 1 is supplied via the distribution board 11, and power from the external power system 1 also passes through the distribution board 11 and the power supply connection terminal block 44 to the exhaust heat recovery device 40. Supplied.

  On the other hand, if it is determined in step # 16 that the external power system 1 has not recovered power, the exhaust heat recovery control unit 45 proceeds to step # 18, and the emergency stop condition of the power generator 20 is satisfied. It is determined whether or not it has been done. The exhaust heat recovery control unit 45 detects this emergency when an abnormality in the heat recovery operation in the exhaust heat recovery device 40 or an abnormality in the heat supply operation is detected by the pressure sensor L or the flow rate sensor M as the abnormality detection means. It is determined that the stop condition is satisfied. When it is determined that the emergency stop condition is not satisfied, the exhaust heat recovery control unit 45 returns to the beginning of this flowchart. If the exhaust heat recovery control unit 45 determines in step # 18 that the emergency stop condition has been satisfied, the process proceeds to step # 20, and a command for notifying the information output device 16 of the emergency stop in the house 10 is issued. Is transmitted via the communication line 8. As a result, in the house 10, the information output unit 16 </ b> A of the information output device 16 notifies that the power generation device 20 is urgently stopped. Thereafter, the exhaust heat recovery control unit 45 proceeds to step # 22 and transmits an emergency stop command to the power generation apparatus 20 via the communication line 3. And the electric power generating apparatus 20 performs control which stops the driving | operation of the engine 21 and a generator according to an emergency stop command. In other words, the power generation device 20 is forcibly stopped due to the circumstances on the exhaust heat recovery device 40 side even during the self-sustaining operation.

  As described above, the power generation operation control unit 29 performs control to stop the operation of the engine 21 and the generator in accordance with the emergency stop command given to the power generation device 20 by the exhaust heat recovery control unit 45. At times, the exhaust heat recovery control unit 45 needs to be urgently stopped while continuously supplying power to the house 10 and the exhaust heat recovery device 40 by operating the engine 21 and the generator 22 without stopping. If it is determined that there is a failure, the emergency stop can be accepted to prevent a failure.

<Another embodiment>
<1>
In the above embodiment, the configuration of the power supply system has been described with reference to a specific example as illustrated in FIG. 1, but the configuration can be changed as appropriate. For example, the power generation apparatus 20 may not be a power generation apparatus that supplies both heat and electricity as described above, and may be a power supply system that does not include the exhaust heat recovery apparatus 40. In the above embodiment, the value of the received power detected by the received power detection means Wa and the value of the generated power detected by the generated power detection means Wb1 (Wb) and the generated power detection means Wb2 (Wb) are the exhaust heat. Although the example transmitted to the information output device 16 via the recovery device 40 has been described, information communication between the power generation device 20 and the information output device 16 is possible when the exhaust heat recovery device 40 is not provided. Communication power to be provided, the value of the received power detected by the received power detection means Wa from the power generation device 20 to the information output device 16, and the generated power detection means Wb1 (Wb) and the generated power detection means Wb2 (Wb) What is necessary is just to comprise so that the value of the detected generated electric power may be transmitted.
Moreover, although the bathroom heating / drying device 13A has been described as an example of the power consumption type heat utilization device E, another device may be used as the power consumption type heat utilization device E. In addition, the number of installed indoor electrical outlets and outdoor electrical outlets, installation locations, and the like can be changed as appropriate.

<2>
In the above embodiment, the specific example of the display screen of the information output unit 16A has been described with reference to FIG. 3, but the example shown in FIG. 3 is an example, and the contents of the display screen such as symbols and characters can be appropriately changed. .

<3>
In the above embodiment, an example has been described in which the pressure sensor L and the flow rate sensor M are used as abnormality detection means that can detect an abnormality in the heat recovery operation in the exhaust heat recovery device 40 and an abnormality in the heat supply operation. You may utilize an apparatus as an abnormality detection means. For example, a temperature sensor that detects the temperature of hot water flowing through the exhaust heat recovery passage 42 or the temperature of engine cooling water flowing through the cooling water circulation passage 25 is provided as an abnormality detection means, and if the detected temperature is equal to or higher than a set upper limit temperature, an abnormality You may comprise so that it may determine with having generate | occur | produced.

  INDUSTRIAL APPLICABILITY The present invention can be used for an information output device that can allow a user to reliably recognize extra power that can be consumed while the power generation device is operating independently.

DESCRIPTION OF SYMBOLS 1 External power system 14 Power consumption apparatus 14A Power consumption apparatus 14B Power consumption apparatus 16 Information output apparatus 16A Information output means 16B Output control means 16C Operation input means 20 Power generator Wa Received power detection means Wb Generated power detection means Wb1 Generated power detection means Wb1 power generation detection means

Claims (4)

A power generation device that can be operated by switching between an interconnection operation linked to an external power system and a self-sustained operation not linked to the external power system, received power received from the external power system, and generated power generated by the power generation device An information output device used in a power supply system, comprising: a power consuming device that operates by consuming at least one of: a received power detection unit that detects the received power; and a generated power detection unit that detects the generated power. And
Information output means for outputting information;
Output control means for determining the content of the information to be output by the information output means and outputting the information from the information output means,
Power is supplied from the external power system to the distribution board,
The power generation device is configured such that a mode changeover switch that switches between an operation mode of the interconnection operation mode and the independent operation mode for the power generation device is switched to the interconnection operation mode. When the power generation device is connected to the external power system and connected to the distribution board, the generated power is supplied to the output terminal for connection that is connected to the distribution board. At least one of the received power and the generated power can be supplied to the power consuming device, and the power generating device is configured so that the power generating device is switched to the self-sustaining operation mode so that the power generating device During self-sustained operation not connected to the grid, by supplying the generated power to the independent output terminal not connected to the distribution board, it is not connected to the distribution board One said can supply the generated power to the power consuming device that is connected to a self-supporting for the output end,
Said output control means in the time of interconnected operation of the mode switching switch is the power generation apparatus by being switched to the interconnected operation mode is interconnection to said external power system, the received power detecting means detects The sum of the received power and the generated power detected by the generated power detection means is output from the information output means as power consumption by the power consuming device, and the mode switch is switched to the self-sustaining operation mode. in in the power generating apparatus wherein the external electric power system the time autonomous operation that is not communicating system, of the generated power which the received electric power and the generated power detecting means and the reception power detected by the detecting means detects the generated power The information output means for outputting the generated power detected by the detection means from the information output means as power consumption by the power consuming device. Apparatus. The output control means includes
During the interconnection operation, the received power detected by the received power detection means is output from the information output means as received power received from the external power system, and the generated power detected by the generated power detection means is The sum of the received power detected by the received power detection means and the generated power detected by the generated power detection means is output to the distribution board as the generated power generated by the power generator. Output from the information output means as power consumption by the connected power consumption device, and
In the independent operation, the received power detected by the received power detection means is output from the information output means as received power received from the external power system, and the generated power detected by the generated power detection means is Out of the received power detected by the received power detection means and the generated power detected by the generated power detection means, the generated power detection means detects the generated power generated by the power generator as output from the information output means. The information output device according to claim 1, wherein the generated power is output from the information output unit as power consumption by the power consuming device connected to the self-sustained output terminal. The output control means causes the information output means to output that the power is supplied from the external power system when the received power detection means detects a received power of a predetermined value or more during the independent operation. The information output device according to claim 1 or 2. The information output device according to any one of claims 1 to 3, wherein the information output unit outputs information using at least one of a character and a voice.

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