JP6000744B2 - Energy management device, energy management method, and energy management system - Google Patents

Description

  The present invention relates to an energy management device, an energy management method, and an energy management system that correct measured electric power.

  2. Description of the Related Art In recent years, there has been known a technology for controlling a load device provided to a power consumer, a distributed power source provided to a power consumer, etc. by an energy management device (for example, Home Energy Management System) provided for each power consumer. (See Patent Document 1).

JP 2003-309928 A

  In a conventional energy management system, each device includes a sensor and measures a power value at a plurality of locations. Then, it is required to provide more reliable information using the plurality of power values measured by each device.

  Therefore, an object of the present invention made in view of the problems as described above is to provide an energy management apparatus and energy management capable of presenting more reliable information using a plurality of power values measured by each device. It is to provide a method and an energy management system.

In order to solve the above problems, an energy management device according to the present invention provides:
An energy management device that is installed in a consumer and manages load devices or distributed power sources in the consumer,
A communication unit for obtaining a first power value and a second power value;
A control unit configured to correct the second power value so as to coincide with the first power value when the second power value exceeds the first power value ;
With
The first power value is a generated power value of a distributed power source that supplies power that can be sold, and the second power value is a power sale power value to the system.
Moreover, the energy management apparatus according to the present invention includes:
An energy management device that is installed in a consumer and manages load devices or distributed power sources in the consumer,
A communication unit for obtaining a first power value and a second power value;
A controller that corrects the second power value so as to coincide with the first power value when the second power value is lower than the first power value ;
The first power value is a discharge power value of a distributed power source that supplies power that cannot be sold, and the second power value is a power value related to a power consumption value.
Moreover, the energy management apparatus according to the present invention includes:
An energy management device that is installed in a consumer and manages load devices or distributed power sources in the consumer,
A communication unit for obtaining a first power value and a second power value;
A controller that corrects the second power value so as to coincide with the first power value when the second power value is lower than the first power value ;
The first power value is a charging power value of a power storage unit, and the second power value is a power value related to a power consumption value.

Moreover, the energy management apparatus according to the present invention includes:
A storage medium for storing power sale availability information of each distributed power source is provided,
The control unit determines a distributed power source that supplies power that can be sold or cannot be sold based on the power sale availability information.

Moreover, the energy management apparatus according to the present invention includes:
An energy management device that is installed in a consumer and manages load devices or distributed power sources in the consumer,
A communication unit for obtaining a first power value and a second power value;
A controller that corrects the second power value so as to coincide with the first power value when the second power value exceeds the first power value;
The first power value is a predetermined rated power value of a distributed power source that generates power using fuel, and the second power value is a generated power value of the distributed power source .

Moreover, the energy management apparatus according to the present invention includes:
The control unit updates the predetermined rated power value when the minimum value of the generated power value exceeds the predetermined rated power value for a predetermined period.

Moreover, the energy management apparatus according to the present invention includes:
When the control unit updates the predetermined rated power value, the control unit outputs information indicating that the update has been performed to the outside.
Moreover, the energy management apparatus according to the present invention includes:
A smart meter connected to the load device, the distributed power source and the commercial power source;
The communication unit acquires the power selling power value from the smart meter.

The energy management method according to the present invention includes:
An energy management method for managing a power state of a load device or a distributed power source provided in a consumer,
Obtaining a first power value and a second power value;
Correcting the second power value to match the first power value when the second power value exceeds the first power value ;
Including
The first power value is a generated power value of a distributed power source that supplies power that can be sold, and the second power value is a power sale power value to the system.

The energy management method according to the present invention includes:
An energy management method for managing a power state of a load device or a distributed power source provided in a consumer,
Obtaining a first power value and a second power value;
Correcting the second power value to match the first power value when the second power value is less than the first power value ;
The first power value is a discharge power value of a distributed power source that supplies power that cannot be sold, and the second power value is a power value related to a power consumption value.

The energy management method according to the present invention includes:
An energy management method for managing a power state of a load device or a distributed power source provided in a consumer,
Obtaining a first power value and a second power value;
Correcting the second power value to match the first power value when the second power value is less than the first power value ;
The first power value is a charging power value of a power storage unit, and the second power value is a power value related to a power consumption value.

The energy management method according to the present invention includes:
An energy management method for managing a power state of a load device or a distributed power source provided in a consumer,
Obtaining a first power value and a second power value;
Correcting the second power value to match the first power value when the second power value exceeds the first power value; and
The first power value is a predetermined rated power value of a distributed power source that generates power using fuel, and the second power value is a generated power value of the distributed power source .
The energy management method according to the present invention includes:
It further has a smart meter connected to the load device, the distributed power source, and a commercial power source, and acquires the electric power selling power value from the smart meter.

Moreover, the energy management system according to the present invention includes:
An energy management system that includes a communication device and an energy management device that is provided in a consumer and manages the power state of load devices or distributed power sources in the consumer,
The energy management device acquires a first power value and a second power value, and when the second power value exceeds the first power value, the second power value is set to the first power value. Correction to match the power value and send to the communication device,
The first power value is a generated power value of a distributed power source that supplies power that can be sold, and the second power value is a power sale power value to the grid,
The communication device displays the corrected power value.

Moreover, the energy management system according to the present invention includes:
An energy management system that includes a communication device and an energy management device that is provided in a consumer and manages the power state of load devices or distributed power sources in the consumer,
The energy management device obtains a first power value and a second power value, and when the second power value is lower than the first power value, the second power value is set to the first power value. Correction to match the power value and send to the communication device,
The first power value is a discharge power value of a distributed power source that supplies power that cannot be sold, and the second power value is a power value related to a power consumption value,
The communication device displays the corrected power value.

Moreover, the energy management system according to the present invention includes:
An energy management system that includes a communication device and an energy management device that is provided in a consumer and manages the power state of load devices or distributed power sources in the consumer,
The energy management device obtains a first power value and a second power value, and when the second power value is lower than the first power value, the second power value is set to the first power value. Correction to match the power value and send to the communication device,
The first power value is a charging power value of a power storage unit, and the second power value is a power value related to a power consumption value,
The communication device displays the corrected power value.

Moreover, the energy management system according to the present invention includes:
An energy management system that includes a communication device and an energy management device that is provided in a consumer and manages the power state of load devices or distributed power sources in the consumer,
The energy management device acquires a first power value and a second power value, and when the second power value exceeds the first power value, the second power value is set to the first power value. Make a correction to match the power value and send it to the communication device,
The first power value is a predetermined rated power value of a distributed power source that generates power using fuel, and the second power value is a generated power value of the distributed power source,
The communication device displays the corrected power value.
Moreover, the energy management system according to the present invention includes:
A smart meter connected to the load device, the distributed power source and the commercial power source;
The power sale power value is obtained from the smart meter.

  According to the energy management device, the energy management method, and the energy management system of the present invention, it is possible to present more reliable information using a plurality of power values measured by each device.

It is a block diagram showing a schematic structure of an energy management system concerning one embodiment of the present invention. It is a functional block diagram which shows schematic structure of the energy management apparatus which concerns on one Embodiment of this invention. It is a functional block diagram which shows schematic structure of the communication apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows operation | movement of the energy management system which concerns on one Embodiment of this invention. It is a flowchart which shows operation | movement of the energy management system which concerns on one Embodiment of this invention. It is a flowchart which shows operation | movement of the energy management system which concerns on one Embodiment of this invention. It is a flowchart which shows operation | movement of the energy management system which concerns on one Embodiment of this invention.

  Embodiments of the present invention will be described below.

(Embodiment)
First, an energy management system according to an embodiment of the present invention will be described. The energy management system according to the present embodiment includes a distributed power source that supplies power that can be sold and / or a distributed power source that supplies power that cannot be sold, in addition to the power supplied from the power system (commercial power source). Is provided. A distributed power source that supplies power that can be sold is a system that supplies power by, for example, solar power generation. On the other hand, a distributed power source that supplies electric power that cannot be sold is, for example, a storage battery system that can charge and discharge electric power or a fuel cell system including a fuel cell such as a SOFC (Solid Oxide Fuel Cell). In this embodiment, an example in which a photovoltaic power generation system as a distributed power source that supplies power that can be sold and a distributed power source that supplies power that cannot be sold includes a storage battery system and a fuel cell system.

  FIG. 1 is a block diagram showing a schematic configuration of an energy management system 10 according to an embodiment of the present invention. An energy management system 10 according to an embodiment of the present invention includes an energy management device 11, a communication device 12, a smart meter 13, a power conditioner 14, a solar power generation system 15, a power storage unit 16, and a power distribution unit. A panel 17, a load device 18, and a fuel cell device 19 are provided.

  In FIG. 1, a solid line connecting each functional block represents a flow of electric power. Moreover, in FIG. 1, the broken line which connects each functional block represents the flow of the control signal or the information communicated. The communication indicated by the broken line may be wired communication or wireless communication.

  Various methods can be adopted for communication of control signals and information including each layer. For example, for communication between the energy management device 11 and the communication device 12, the smart meter 13, and the power conditioner 14, communication using a short-range communication method such as ZigBee (registered trademark) can be employed. In addition, various transmission media such as infrared communication and power line communication (PLC) can be used for communication between the energy management apparatus 11 and the load device 18. In addition, various protocols such as ZigBee SEP 2.0 (Smart Energy Profile 2.0), ECHONET Lite (registered trademark), etc. are defined on lower layers including the physical layer suitable for each communication. A communication protocol may be operated. Hereinafter, ECHONET Lite (registered trademark) will be described by taking as an example a case where the energy management device 11 employs communication with the communication device 12, the smart meter 13, the power conditioner 14, and the load device 18.

  The energy management system 10 uses, as the load device 18 and the energy management device, the electric power supplied from the commercial power supply 50, the electric power generated by the photovoltaic power generation system 15, and the electric power discharged from the electric power charged in the power storage unit 16. 11 can be supplied.

  The energy management apparatus 11 controls and manages the power of each device in the energy management system 10 shown in FIG. Details of the configuration of the energy management apparatus 11 will be described later.

  The communication device 12 displays information transmitted from the energy management device 11. For example, the communication device 12 displays a graph image indicating the history of power consumption to be created. Details of the configuration of the communication device 12 will be described later.

  The smart meter 13 is connected to the commercial power source 50 and measures the power supplied from the commercial power source 50. Further, the smart meter 13 is also connected to the distribution board 17, and the sensor measures the power generated by the solar power generation system 15 and sold from the power conditioner 14 to the power company via the distribution board 17. . The smart meter 13 can notify the energy management apparatus 11 of the measured power.

  In addition, the smart meter 13 can receive information such as prediction about power from a system EMS (Energy Management System) 60. Here, the system EMS 60 is a facility that performs various predictions and controls related to electric power, and is generally installed in an electric power company, for example. As the system EMS 60, for example, one constituting an MDMS (meter data management system) can be adopted. The system EMS 60 includes a storage medium 61 that stores information on various types of power, and can collect and accumulate information on results measured by the smart meter 13. The system EMS 60 can be connected to an external network 70 such as the Internet.

  The power conditioner 14 converts DC power supplied from the solar power generation system 15 and the power storage unit 16 into AC power. The power conditioner 14 supplies the converted alternating-current power to each load device 18 through a branching system branched into a plurality by the distribution board 17. Further, the power conditioner 14 can also sell the converted AC power to the power company via the distribution board 17 when there is a surplus in the power generated by the solar power generation system 15. Further, the power conditioner 14 can convert AC power supplied from the commercial power supply 50 into DC power for charging the power storage unit 16.

  The solar power generation system 15 generates power using sunlight. For this reason, the solar power generation system 15 includes a solar battery, and converts sunlight energy into DC power. In this embodiment, the solar power generation system 15 assumes a mode in which, for example, a solar panel is installed on the roof of a house and power is generated using sunlight. However, in this invention, the solar power generation system 15 can employ | adopt arbitrary things, if the energy of sunlight can be converted into electric power.

  As described above, the electric power generated by the solar power generation system 15 can be supplied to each load device 18 and / or sold to an electric power company after being converted into alternating current by the power conditioner 14. Further, the power storage unit 16 may be able to be charged by the electric power generated by the solar power generation system 15, and may be configured to be supplied to the load device 18 with a direct current.

  Further, the solar power generation system 15 measures the generated power value by a sensor included in the solar power generation system 15 and transmits the measured generated power value to the energy management apparatus 11.

  The power storage unit 16 includes a storage battery, and can supply power by discharging the power charged in the storage battery. The power storage unit 16 can be charged with power supplied from the commercial power supply 50 or the solar power generation system 15. As shown in FIG. 1, the electric power discharged from the power storage unit 16 can also be supplied to each load device 18 and the energy management device 11. When supplying the electric power discharged from the electrical storage part 16 to each load apparatus 18 and the energy management apparatus 11, it switches from the electric power supplied from the commercial power source 50.

  In addition, the power storage unit 16 measures the discharge power value or the charge power value by a sensor included in the power storage unit 16, and transmits the measured discharge power value or charge power value to the energy management apparatus 11.

  The distribution board 17 divides the supplied power into a plurality of branches and distributes them to each load device 18. Further, the distribution board 17 distributes the electric power supplied from the fuel cell device 19 to each of the load devices 18 by branching it to a plurality of branches. Here, each branch has a direct load device that consumes a large amount of power and a group that is grouped for each room. The former load device is, for example, an air conditioner, a refrigerator, an IH cooking heater, or the like. The load devices in the latter are load devices connected to outlets provided in each room, and it is uncertain what load devices are connected to the outlets.

  In FIG. 1, the number of load devices 18 connected to the energy management system 10 can be any number. These load devices 18 are various electric appliances, such as a television, an air conditioner, and a refrigerator, for example. These load devices 18 are connected to the power conditioner 14 via the distribution board 17 and supplied with electric power.

  The fuel cell device 19 includes a fuel cell, and generates direct-current power by a chemical reaction with oxygen in the air using hydrogen. A fuel cell generates power by a chemical reaction between hydrogen and oxygen in the air by a method such as SOFC (Solid Oxide Fuel Cell), PEFC (Polymer Electrolyte Fuel Cell), or MCFC (Molten Carbonate Fuel Cell).

  The hydrogen used for power generation may be stored directly and supplied to the fuel cell, or stored as a hydrocarbon gas, hydrogen may be generated by reforming, and supplied to the fuel cell. By adjusting the supply amounts of hydrogen and air, the power generation amount in the fuel cell device 19 can be controlled.

  The fuel cell device 19 has a predetermined rated power value. The predetermined rated power value is 700 W, for example.

  Next, the energy management apparatus 11 will be specifically described. FIG. 2 is a functional block diagram showing a schematic configuration of the energy management apparatus 11 according to one embodiment of the present invention. The energy management device 11 is, for example, a HEMS, and includes a communication unit 111 and a control unit 112.

  The communication unit 111 is, for example, an interface, and transmits and receives control signals and various information from the control unit 112 to and from the communication device 12, the smart meter 13, the power conditioner 14, and the load device 18.

  For example, the communication unit 111 acquires the power sale power value and the power purchase power value of the commercial power supply 50 from a current sensor or the like provided on the distribution board 17. Furthermore, the communication unit 111 can acquire demand response (DR) information from, for example, an electric power company via the smart meter 13.

  In addition, the communication unit 111 acquires the generated power value of the solar power generation system 15 from the solar power generation system 15. Further, the communication unit 111 acquires the discharge power value and the charge power value of the power storage unit 16 from the power storage unit 16. Further, the communication unit 111 can acquire the generated power value of the fuel cell device 19 from the fuel cell device 19 via a sensor provided on the trunk. In addition, the communication unit 111 can directly acquire each power consumption from each load device 18. The communication unit 111 can acquire various information from the network 70.

  Further, the communication unit 111 can acquire a control signal from the communication device 12, and the communication unit 111 notifies the communication device 12 of information indicating the state of power control and management in the energy management system 10. As an example, a case where ECHONET Lite (registered trademark) is adopted will be described as an example.

  Based on various information acquired by the communication unit 111, the control unit 112 generates a control signal for controlling the power of each device in the energy management system 10 and / or information to be notified to the communication device 12.

  Further, the control unit 112 accumulates information acquired by the communication unit 111 in order to manage the power of each device in the energy management system 10. The control unit 112 has a storage medium 25 in order to store various collected information. The storage medium 25 may be connected to the outside of the energy management apparatus 11 or may be built in the energy management apparatus 11.

  Specifically, the control unit 112 accumulates the generated power value of the solar power generation system 15 acquired by the communication unit 111. Further, the control unit 112 accumulates the power sale power value and the power purchase power value measured by the smart meter 13 acquired by the communication unit 111. Further, the control unit 112 accumulates the discharge power value and the charge power value of the power storage unit 16 acquired by the communication unit 111. In addition, the control unit 112 accumulates the generated power value of the fuel cell device 19 acquired by the communication unit 111.

  The control unit 112 calculates the power consumption value of the energy management system 10 based on the power values related to these power consumption values. Specifically, the control unit 112 is a power sale power value and a power purchase value measured by a current sensor or the like provided in the distribution board 17, a power generation value of the solar power generation system 15, and a discharge power of the power storage unit 16. The power consumption value is calculated based on the value and the charging power value and the generated power value of the fuel cell device 19 and stored in the storage medium 25.

  Furthermore, the control part 112 correct | amends each power value acquired via the communication part 111 in this way. Hereinafter, the following corrections (1) to (4) performed by the control unit 112 will be described in detail.

(1) Correction of generated power value or sold power value The control unit 112 is based on one of the generated power value of the photovoltaic power generation system 15 or the sold power value measured by a current sensor or the like provided on the distribution board 17. The other power value is corrected. Preferably, the control unit 112 stores, in the storage medium 25, information related to the priority or accuracy corresponding to the generated power value of the photovoltaic power generation system 15 or the sold power value measured by a current sensor or the like. Then, the control unit 112 corrects the other power value to coincide with the power value having high priority or accuracy based on the power value having high priority or accuracy among the generated power value or the power selling power value. .

  Preferably, the control unit 112 associates the generated power value of the solar power generation system 15 with higher priority or higher accuracy. The control unit 112 corrects the power sale power value measured by the current sensor or the like to match the power generation power value of the solar power generation system 15 based on the power generation power value of the solar power generation system 15. The correction is based on the fact that the power selling power value measured by the current sensor or the like cannot exceed the power generating power value of the photovoltaic power generation system 15 that is a distributed power source capable of selling power. The correction is based on the fact that the generated power value of the photovoltaic power generation system 15 that is a distributed power source that can sell power matches the sold power value measured by a current sensor or the like when all the generated power is sold. . By this correction, a contradiction between the power sale power value measured by the current sensor and the power generation power value measured by the solar power generation system 15 can be resolved. Therefore, there is no discrepancy between the power sale power value measured by the current sensor recognized by the user and the power generation power value measured by the solar power generation system 15, and a sense of security can be given to the user.

  In addition, the control unit 112 has a generated power value of 0 when the solar power generation system 15 is not generating power at all or when the solar power generation system 15 is not connected to the energy management system 10. The measured power selling power value is corrected to zero.

(2) Correction of Discharge Power Value or Power Consumption Value The control unit 112 corrects the other power value based on one of the discharge power value of the power storage unit 16 or the power consumption value of the energy management system 10. Preferably, the control unit 112 stores, in the storage medium 25, information related to priority or accuracy corresponding to the discharge power value of the power storage unit 16 and the power consumption value of the energy management system 10. Then, the control unit 112 corrects the other power value to coincide with the power value with high priority or accuracy based on the power value with high priority or accuracy among the discharge power value or the power consumption value.

  Preferably, control unit 112 associates a higher power or higher accuracy with the discharge power value of power storage unit 16. Then, the control unit 112 corrects the power consumption value of the energy management system 10 based on the discharge power value of the power storage unit 16. Specifically, based on the discharge power value of the power storage unit 16, when the power consumption value before correction is less than the discharge power value, the power sale power value or / and the power purchase power value measured by the current sensor or the like are changed. Then, the power consumption value is corrected to match the discharge power value. The correction is based on the fact that the power consumption value cannot fall below the discharge power value of the power storage unit 16 that is a distributed power source that cannot be bought and sold. In addition, in the correction, when the power consumption of the energy management system 10 is all covered by the discharge power of the power storage unit 16 that is a distributed power source that cannot be sold, the power consumption matches the discharge power. Based. By this correction, the contradiction between the discharge power value measured in the power storage unit 16 and the power consumption value can be resolved. Therefore, there is no difference between the discharge power value measured in the power storage unit 16 recognized by the user and the power value related to the power consumption value, and a sense of security can be given to the user. In addition, although the case where the said power consumption and the said discharge power correspond completely was illustrated above, it is not restricted to this, It is sufficient as long as it is substantially corresponded so that the error in an appropriate range may be permitted.

(3) Correction of Charging Power Value or Power Consumption Value The control unit 112 corrects the other power value based on one of the charging power value of the power storage unit 16 or the power consumption value of the energy management system 10. Preferably, the control unit 112 stores in the storage medium 25 information related to the priority or accuracy corresponding to the charging power value of the power storage unit 16 and the power consumption value of the energy management system 10. Then, the control unit 112 corrects the other power value to coincide with the power value with high priority or accuracy based on the power value with high priority or accuracy among the discharge power value or the power consumption value.

  Preferably, the control unit 112 associates the charging power value of the power storage unit 16 with higher priority or higher accuracy. Then, control unit 112 corrects the power consumption value of energy management system 10 based on the charging power value of power storage unit 16. Specifically, based on the charge power value of the power storage unit 16, if the power consumption value before correction is less than the charge power value, the power sale power value or / and the power purchase power value measured by the current sensor or the like are changed. Then, the power consumption value is corrected to match the charging power value. The correction is based on the fact that the power consumption value cannot exceed the charging power value of the power storage unit 16. By this correction, a contradiction between the charging power value measured in the power storage unit 16 and the power consumption value can be resolved. Therefore, there is no discrepancy between the charge power value measured in the power storage unit 16 recognized by the user and the power value related to the power consumption value, and a sense of security can be given to the user.

(4) Correction of power generation value of fuel cell device 19 The control unit 112 determines whether or not the power generation value of the fuel cell device 19 exceeds a predetermined rated power value. When the predetermined rated power value is exceeded, the control unit 112 corrects the generated power value so that it matches the predetermined rated power value. However, when the minimum value of the instantaneous value of the generated power value at the predetermined time exceeds the predetermined rated power value, the control unit 112 changes the predetermined rated power value to the minimum value. The predetermined time is preferably 10 seconds. Thereby, it is possible to cope with the case where the rated power value is unknown. The correction is based on the fact that the generated power value of the fuel cell device 19 is basically equal to or lower than the rated power value. By this correction, the contradiction between the generated power value of the fuel cell device 19 and the rated power value can be resolved. Here, since the fuel cell device 19 is a distributed power source using fuel, it is not preferable to display an incorrect power value higher than the rated power value. It is possible to prevent a measurement value that exceeds the rated power value from being erroneously displayed by the correction. Therefore, the power value recognized by the user is in principle lower than the rated power value. In particular, since it is generated power of a distributed power source that generates power using fuel, it is possible to give a sense of security to the user by correcting the power to below the rated power value in principle.

  The correction shown in the above (1) to (4) is performed, and the control unit 112 changes each power value of the storage medium 25 to each corrected power value. Then, the control unit 112 transmits these corrected power values accumulated in the storage medium 25 to the communication device 12 via the communication unit 111.

  Next, the communication device 12 will be specifically described. FIG. 3 is a functional block diagram illustrating a schematic configuration of the communication device 12 according to the first embodiment. The communication device 12 can be various terminals such as a terminal designed for exclusive use, and a mobile terminal, a personal computer (PC), a notebook personal computer, or a tablet PC installed with application software. The communication device 12 includes a display unit 121, an input detection unit 122, a storage medium 123, a control unit 124, and a communication unit 125.

  The display unit 121 can be configured by, for example, a liquid crystal display (LCD) or an organic EL display. Further, in the present embodiment, the display unit 121 can use a single color display or a gray scale display. However, in order to perform display in a manner that a general user can easily grasp at a glance, It is preferable to use one corresponding to the display.

  The display unit 121 displays various power values received from the energy management apparatus 11. The display unit 121 can display images for receiving various inputs for executing the functions of the energy management apparatus 11.

  The input detection unit 122 detects an input corresponding to the display on the display unit 121. The input detection unit 122 is a touch panel, for example, and can detect an operation that a user directly touches with a finger or the like. Further, the input detection unit 122 can detect multi-touch, that is, contact with a plurality of locations on the contact detection surface of the input detection unit 122.

  The touch panel is formed of a transmissive member, and is disposed on the front surface of the display unit 121. With such a configuration, contact of an icon displayed on the display unit 121 with an object or the like can be detected. Therefore, the input detection unit 122 using the touch panel having such a configuration can provide intuitive operability to the user. Of course, instead of the touch panel, an operation means having a physical key may be adopted as the input detection unit 122.

  The storage medium 123 stores information such as various power values related to the communication device 12. The control unit 124 controls and manages the entire communication device 12 by controlling each functional unit constituting the communication device 12.

  The communication unit 125 is an interface, for example, and performs wired communication or wireless communication with the energy management apparatus 11. That is, the communication unit 125 transmits a control signal and / or information to the energy management apparatus 11 and receives information such as a control signal and / or various electric energy from the energy management apparatus 11. When the communication device 12 communicates with the energy management device 11 by wired communication, the communication unit 125 can be a connector receptacle for connecting a cable connected to the energy management device 11 to the communication device 12.

  Next, operation | movement of the energy management system 10 which concerns on one Embodiment of this invention is demonstrated with the flowchart shown to FIGS. 4-7 for every correction | amendment (1)-(4) of electric power value, respectively.

  FIG. 4 is a flowchart showing an operation when the energy management apparatus 11 corrects the generated power value or the sold power value. First, the communication unit 111 of the energy management device 11 acquires the power generation value of the solar power generation system 15 from the solar power generation system 15 and also acquires the power sale power value of the commercial power supply 50 from the smart meter 13 (step). S1a).

  Subsequently, the control unit 112 accumulates each power value acquired via the communication unit 111 in the storage medium 25 (step S2a).

  Subsequently, the control unit 112 corrects each power value accumulated in the storage medium 25. The control unit 112 corrects the other power value based on one of the generated power value of the photovoltaic power generation system 15 or the sold power value measured by a current sensor or the like (step S3a). Preferably, the control unit 112 stores, in the storage medium 25, information related to the priority or accuracy corresponding to the generated power value of the solar power generation system 15 or the sold power value measured by the smart meter 13. Then, the control unit 112 corrects the other power value to coincide with the power value having high priority or accuracy based on the power value having high priority or accuracy among the generated power value or the power selling power value. .

  Subsequently, the control unit 112 changes each power value of the storage medium 25 to each corrected power value (step S4a).

  Subsequently, the control unit 112 transmits each power value accumulated in the storage medium 25 to the communication device 12 via the communication unit 111 (step S5a).

  Subsequently, when the control unit 124 of the communication device 12 receives each power value from the energy management device 11 via the communication unit 125 (step S6a), the control unit 124 causes the display unit 121 to display the various power values (step S7a). Then, the process ends.

  FIG. 5 is a flowchart showing an operation when the energy management apparatus 11 corrects the discharge power value or the power consumption value. First, the communication unit 111 of the energy management apparatus 11 acquires the power value related to the discharge power value of the power storage unit 16 and the power consumption value of the energy management system 10 (step S1b). Specifically, the communication unit 111 includes a power generation value of the solar power generation system 15 to the solar power generation system 15, a power storage unit 16, a discharge power value of the power storage unit 16, a current sensor provided in the distribution board 17, and the like. Then, the power sale power value and the power purchase power value of the commercial power source 50 and the generated power value from the fuel cell device 19 are acquired.

  Subsequently, the control unit 112 accumulates each power value acquired via the communication unit 111 in the storage medium 25 (step S2b).

  Subsequently, the control unit 112 calculates a power consumption value of the energy management system 10 based on each power value acquired by the communication unit 111 (step S3b). Specifically, the control unit 112 includes a power sale power value and a power purchase power value measured by a current sensor or the like, a power generation value of the solar power generation system 15, a discharge power value of the power storage unit 16, and the fuel cell device 19. The power consumption value is calculated based on the generated power value. Then, the control unit 112 accumulates the calculated power consumption in the storage medium 25 (Step S4b).

  Subsequently, the control unit 112 corrects each power value accumulated in the storage medium 25. The control unit 112 corrects the other power value based on one of the discharge power value of the power storage unit 16 or the power consumption value of the energy management system 10 (step S5b). Preferably, the control unit 112 stores, in the storage medium 25, information related to priority or accuracy corresponding to the discharge power value of the power storage unit 16 and the power consumption value of the energy management system 10. Then, the control unit 112 corrects the other power value to coincide with the power value with high priority or accuracy based on the power value with high priority or accuracy among the discharge power value or the power consumption value.

  Subsequently, the control unit 112 changes each power value of the storage medium 25 to each corrected power value (step S6b).

  Subsequently, the control unit 112 transmits each power value accumulated in the storage medium 25 to the communication device 12 via the communication unit 111 (step S7b).

  Subsequently, when the control unit 124 of the communication device 12 receives each power value from the energy management device 11 via the communication unit 125 (step S8b), the control unit 124 causes the display unit 121 to display the various power values (step S9b). Then, the process ends.

  FIG. 6 is a flowchart showing an operation when the energy management apparatus 11 corrects the charging power value or the power consumption value. First, the communication unit 111 of the energy management apparatus 11 acquires the power value related to the charging power value of the power storage unit 16 and the power consumption value of the energy management system 10 (step S1c). Specifically, the communication unit 111 uses the power generation value of the photovoltaic power generation system 15 to the power generation value of the solar power generation system 15, the power storage unit 16, the charging power value of the power storage unit 16, the current sensor, and the like. The value, the purchased power value, and the generated power value from the fuel cell device 19 are acquired.

  Subsequently, the control unit 112 accumulates each power value acquired via the communication unit 111 in the storage medium 25 (step S2c).

  Subsequently, the control unit 112 calculates a power consumption value of the energy management system 10 based on each power value acquired by the communication unit 111 (step S3c). Specifically, the control unit 112 includes a power sale power value and a power purchase power value measured by a current sensor or the like, a power generation value of the solar power generation system 15, a charge power value of the power storage unit 16, and the fuel cell device 19. The power consumption value is calculated based on the generated power value. Then, the control unit 112 accumulates the calculated power consumption in the storage medium 25 (Step S4c).

  Subsequently, the control unit 112 corrects each power value accumulated in the storage medium 25. The control unit 112 corrects the other power value based on one of the charging power value of the power storage unit 16 or the power consumption value of the energy management system 10 (step S5c). Preferably, the control unit 112 stores in the storage medium 25 information related to the priority or accuracy corresponding to the charging power value of the power storage unit 16 and the power consumption value of the energy management system 10. Then, the control unit 112 corrects the other power value to coincide with the power value with high priority or accuracy based on the power value with high priority or accuracy among the discharge power value or the power consumption value.

  Subsequently, the control unit 112 changes each power value of the storage medium 25 to each corrected power value (step S6c).

  Subsequently, the control unit 112 transmits each power value accumulated in the storage medium 25 to the communication device 12 via the communication unit 111 (step S7c).

  Subsequently, when the control unit 124 of the communication device 12 receives each power value from the energy management device 11 via the communication unit 125 (step S8c), the control unit 124 causes the display unit 121 to display the various power values (step S9c). Then, the process ends.

  FIG. 7 is a flowchart showing an operation when the energy management device 11 corrects the generated power value of the fuel cell device 19. First, the communication unit 111 of the energy management device 11 acquires the generated power value of the fuel cell device 19 from the fuel cell device 19 via a sensor provided on the trunk (step S1d).

  Subsequently, the control unit 112 accumulates the generated power value of the fuel cell device 19 acquired via the communication unit 111 in the storage medium 25 (step S2d).

  Subsequently, the control unit 112 determines whether or not the generated power value of the fuel cell device 19 exceeds a predetermined rated power value (step S3d). When the predetermined rated power value is exceeded, the process proceeds to step S4d. If the predetermined rated power value is not exceeded, the process proceeds to step S5d.

  When the generated power value exceeds the predetermined rated power value in step S3d, the control unit 112 corrects the accumulated generated power value to match the predetermined rated power value (step S4d).

  Subsequently, the control unit 112 transmits the power value accumulated in the storage medium 25 to the communication device 12 via the communication unit 111 (step S5d).

  Subsequently, when receiving the power value from the energy management apparatus 11 via the communication unit 125 (step S6d), the control unit 124 of the communication device 12 causes the display unit 121 to display the various power values (step S7d). Then, the process ends.

  As described above, according to the present invention, the energy management device 11 is measured by each device in order to correct the contradiction between the plurality of measured powers based on the plurality of measured power values. More reliable information can be presented using a plurality of power values. Therefore, there is no wrinkle between a plurality of power values recognized by the user, and a sense of security can be given to the user.

  In this example, the case where the rated power value is absolute has been described. However, in the consumer, for example, the fuel cell device 19 or the power conditioner may be replaced with one having a higher power generation capacity. Assuming such a case, for example, in step S2d, the generated power value of the fuel cell device 19 acquired via the communication unit 111 is accumulated in the storage medium 25 for a predetermined period (for example, 10 minutes), The control unit 112 may verify the validity of the rated power value by determining whether or not the minimum instantaneous value of the generated power value exceeds a predetermined rated power value. Specifically, it is appropriate if the minimum value does not exceed a predetermined rated power value, and if it exceeds, the rated power value is not appropriate, that is, the fuel cell device 19 has a higher power generation capability. The control unit 112 may determine that it has been replaced. And the control part 112 may rewrite rated power value itself so that it may become a value higher than the said minimum value at least. In this case, the control unit 112 transmits a signal indicating that the rated power value has been rewritten to the communication device 12 so that the communication device 12 updates the rated power value or replaces the fuel cell device 19 or the power conditioner. It is desirable to display that it has been detected.

  In the present embodiment, the distributed power source that supplies power that can be sold and the distributed power source that supplies power that cannot be sold are the solar power generation system 15, the power storage unit 16, and the fuel cell device 19, respectively. Not limited to this. For example, the photovoltaic power generation system 15 may be a distributed power source that supplies power that cannot be sold, or the power storage unit 16 and the fuel cell device 19 may be distributed power sources that supply power that can be sold. Further, the storage medium 25 stores power sale availability information of the distributed power source, and the control unit 112 generates power that can be sold or cannot be sold based on the power sale availability information stored in the storage medium 25. The distributed power supply to be supplied may be determined.

  In this Embodiment, although the example which correct | amends the electric power which the energy management apparatus 11 measured was shown, it is not restricted to this. Instead of the energy management device 11, the communication device 12 may correct the measured power. When configured in this manner, the communication unit 125 of the communication device 12 acquires various power values via the energy management device 11. Then, the control unit 124 may correct the power value based on the various power values.

  Although the present invention has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention. For example, the functions included in each means, each step, etc. can be rearranged so that there is no logical contradiction, and a plurality of means, steps, etc. can be combined or divided into one. .

DESCRIPTION OF SYMBOLS 10 Energy management system 11 Energy management apparatus 12 Communication apparatus 13 Smart meter 14 Power conditioner 15 Solar power generation system 16 Power storage part 17 Distribution board 18 Load apparatus 19 Fuel cell apparatus 25 Storage medium 50 Commercial power supply 60 System EMS
61 storage medium 70 network 111 communication unit 112 control unit 121 display unit 122 input detection unit 123 storage medium 124 control unit 125 communication unit

Claims (18)

An energy management device that is installed in a consumer and manages load devices or distributed power sources in the consumer,
A communication unit for obtaining a first power value and a second power value;
A controller that corrects the second power value so as to coincide with the first power value when the second power value exceeds the first power value ;
The first power value is a generated power value of a distributed power source that supplies power that can be sold, and the second power value is a power sale power value to a system. . An energy management device that is installed in a consumer and manages load devices or distributed power sources in the consumer,
A communication unit for obtaining a first power value and a second power value;
A controller that corrects the second power value so as to coincide with the first power value when the second power value is lower than the first power value ;
The first power value is a discharge power value of a distributed power source that supplies power that cannot be sold, and the second power value is a power value related to a power consumption value. apparatus. An energy management device that is installed in a consumer and manages load devices or distributed power sources in the consumer,
A communication unit for obtaining a first power value and a second power value;
A controller that corrects the second power value so as to coincide with the first power value when the second power value is lower than the first power value ;
The energy management apparatus according to claim 1, wherein the first power value is a charging power value of the power storage unit, and the second power value is a power value related to a power consumption value. A storage medium for storing power sale availability information of each distributed power source is provided,
The said control part discriminate | determines the distributed power supply which supplies the electric power which can be sold or cannot be sold based on the said electric power sale propriety information, The Claim 1 thru | or 3 characterized by the above-mentioned. Energy management device. An energy management device that is installed in a consumer and manages load devices or distributed power sources in the consumer,
A communication unit for obtaining a first power value and a second power value;
A controller that corrects the second power value so as to coincide with the first power value when the second power value exceeds the first power value ;
The first power value is a predetermined rated power value of a distributed power source that generates power using fuel, and the second power value is a generated power value of the distributed power source. . The energy management device according to claim 5 , wherein the control unit updates the predetermined rated power value when the minimum value of the generated power value exceeds the predetermined rated power value for a predetermined period. . The energy management device according to claim 6 , wherein when the predetermined rated power value is updated, the control unit outputs information indicating the update to the outside. A smart meter connected to the load device, the distributed power source and the commercial power source;
The energy management apparatus according to claim 1, wherein the communication unit acquires the power sale power value from the smart meter. An energy management method for managing a power state of a load device or a distributed power source provided in a consumer,
Obtaining a first power value and a second power value;
Correcting the second power value to match the first power value when the second power value exceeds the first power value; and
The first power value is a generated power value of a distributed power source that supplies power that can be sold, and the second power value is a power sale power value to the grid. Method. An energy management method for managing a power state of a load device or a distributed power source provided in a consumer,
Obtaining a first power value and a second power value;
Correcting the second power value to match the first power value when the second power value is less than the first power value ;
The first power value is a discharge power value of a distributed power source that supplies power that cannot be sold, and the second power value is a power value related to a power consumption value. Management method. An energy management method for managing a power state of a load device or a distributed power source provided in a consumer,
Obtaining a first power value and a second power value;
Correcting the second power value to match the first power value when the second power value is less than the first power value ;
The energy management method, wherein the first power value is a charging power value of a power storage unit, and the second power value is a power value related to a power consumption value. An energy management method for managing a power state of a load device or a distributed power source provided in a consumer,
Obtaining a first power value and a second power value;
Correcting the second power value to match the first power value when the second power value exceeds the first power value; and
The first power value is a predetermined rated power value of a distributed power source that generates power using fuel, and the second power value is a generated power value of the distributed power source. Method. It further comprises a smart meter connected to the load device, the distributed power source and a commercial power source, and the power sale power value is obtained from the smart meter.
The energy management method according to claim 9 . An energy management system that includes a communication device and an energy management device that is provided in a consumer and manages the power state of load devices or distributed power sources in the consumer,
The energy management device acquires a first power value and a second power value, and when the second power value exceeds the first power value, the second power value is set to the first power value. Correction to match the power value and send to the communication device,
The first power value is a generated power value of a distributed power source that supplies power that can be sold, and the second power value is a power sale power value to the grid,
The communication apparatus displays the corrected power value. An energy management system that includes a communication device and an energy management device that is provided in a consumer and manages the power state of load devices or distributed power sources in the consumer,
The energy management device obtains a first power value and a second power value, and when the second power value is lower than the first power value, the second power value is set to the first power value. Correction to match the power value and send to the communication device,
The first power value is a discharge power value of a distributed power source that supplies power that cannot be sold, and the second power value is a power value related to a power consumption value,
The communication apparatus displays the corrected power value. An energy management system that includes a communication device and an energy management device that is provided in a consumer and manages the power state of load devices or distributed power sources in the consumer,
The energy management device obtains a first power value and a second power value, and when the second power value is lower than the first power value, the second power value is set to the first power value. Correction to match the power value and send to the communication device,
The first power value is a charging power value of a power storage unit, and the second power value is a power value related to a power consumption value,
The communication apparatus displays the corrected power value. An energy management system that includes a communication device and an energy management device that is provided in a consumer and manages the power state of load devices or distributed power sources in the consumer,
The energy management device acquires a first power value and a second power value, and when the second power value exceeds the first power value, the second power value is set to the first power value. Make a correction to match the power value and send it to the communication device,
The first power value is a predetermined rated power value of a distributed power source that generates power using fuel, and the second power value is a generated power value of the distributed power source,
The communication apparatus displays the corrected power value. A smart meter connected to the load device, the distributed power source and the commercial power source;
The energy management system according to claim 14 , wherein the power sale power value is acquired from the smart meter.

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