JP6563320B2 - Power control apparatus and power control method - Google Patents

Description

  Embodiments described herein relate generally to a power control device and a power control method for a power generator installed in a power consumer (including a general household) connected to a power system.

  The voltage of the power transmission line and the distribution line changes depending on the power supply / demand situation. In the past, reactive power was adjusted at power plants and transmission / distribution facilities to adjust the voltage. In recent years, it has become difficult to adjust the voltage only with a power plant or a power transmission / distribution facility due to an increase in the renewable energy that causes voltage fluctuations such as wind power generation and solar power generation and a distributed arrangement. If the renewable energy ratio in the power system further increases in the future, the voltage at the consumer receiving end may not be adjusted.

  In the case of photovoltaic power generation, the voltage increases as the power generation output increases, so the power generation output must be reduced, especially at the end of the distribution system, and the utilization rate of solar power generation equipment is reduced. . Therefore, a technique for adjusting the voltage at the consumer end is required.

Japanese Patent No. 5309077

  The output of renewable energy such as wind power generation and solar power generation varies depending on weather conditions, and the voltage of the power system varies with the variation in output. In particular, solar power generation is often installed at or near the customer, and there is a problem that the receiving end voltage of the consumer fluctuates as the output of the solar power generation fluctuates. Since wind power generation and solar power generation are often installed in a distributed manner, it is difficult to adjust the receiving end voltage of each consumer using power transmission / distribution equipment such as business power plants, substations, and switch stations.

  In the case of photovoltaic power generation, a function is provided for reducing or stopping the power generation output in order to prevent a voltage increase when the receiving end voltage exceeds a certain value. Therefore, when the weather is good and many photovoltaic power generation facilities generate a large output, the closer to the end of the power distribution system, the higher the voltage rises, and the better the weather, there is a risk that the amount of generated power decreases. There is.

  The problem to be solved by the present invention is to control the power of the consumer (the sum of the power consumption of the electrical equipment installed in the consumer and the power generated by the power generator) according to the received voltage and the demand power, An object of the present invention is to provide a power control device and a power control method for suppressing voltage fluctuations in a power system and a transmission / distribution system and stabilizing the voltage.

  The power control apparatus of the embodiment includes power target value setting means for setting a power consumption target value of a power consumer connected to the power grid, and power consumption of the power consumption means connected to the power grid of the power consumer. Using the power measurement means to measure, the power consumption target value set by the power target value setting means and the power consumption measurement value measured by the power measurement means, the power generation means connected to the distribution system of the power consumer Power generation output set value calculating means for obtaining the power generation output set value of the power, voltage measuring means for measuring the voltage of the distribution system of the power consumer, voltage measurement value measured by the voltage measuring means and the power generation output set value calculating means Power generation output command value calculation means for obtaining and outputting a power generation output command value using the power generation output set value obtained by the above.

  Suppresses voltage fluctuations in the power system and transmission / distribution system by controlling the power of the consumer as viewed from the power system according to the voltage of the distribution system without installing special equipment to control the voltage of the power system Thus, the voltage can be stabilized.

The figure which shows the example (example which installed the power control apparatus outside the distribution board) of the system configuration by 1st Embodiment. The figure which shows the internal structural example of the power control apparatus by the embodiment. The figure which shows the example (example which incorporated the power control apparatus in the distribution board) of the system configuration by 2nd Embodiment. The figure which shows the internal structural example of the power control apparatus by the embodiment. The figure for demonstrating the example (example in case a voltage regulation rate is 10% and a power generation output setting value is 500 W) of a power generation output command value calculation function. The figure for demonstrating the example (example in case a voltage regulation rate is 10% and a power generation output setting value is 600 W) of a power generation output command value calculation function. The figure for demonstrating the example (example in case a voltage regulation rate is 10% and a power generation output setting value is 200 W) of a power generation output command value calculation function.

  Hereinafter, embodiments will be described with reference to the drawings.

[First Embodiment]
First, the first embodiment will be described.
FIG. 1 is a diagram illustrating an example of a system configuration according to the first embodiment (an example in which a power control device is installed outside a distribution board). FIG. 2 is a diagram illustrating an internal configuration example of the power control apparatus according to the embodiment.

  In FIG. 1, a power consuming means and a power generating means are connected to a distribution system 11 in a power consumer connected to the power system via a switchgear 13, and the power consuming means are a lamp 21, a television 22, a refrigerator 23, and an air conditioner 24. The power generation means is a fuel cell system 30 with an electric water heater, and an example in which the power control device 40 is installed outside the distribution board 12 is shown. The power consuming means is generally connected to the distribution line via connection means such as an outlet, but the illustration of the connection means is omitted. The fuel cell system 30 adjusts the power generation output by controlling the fuel cell (main body) 32, the water heater heating device 33, and the power converter 34 provided in the fuel cell system 30 according to the power generation output command value supplied from the power control device 40. To do. In addition, the heating apparatus 33 for water heaters can use an electric heater and a heat pump, for example.

  As shown in FIG. 2, the power control device 40 includes a power target value setting unit 61 that sets a power consumption target value (hereinafter referred to as a power target value) of a power consumer, and a current and voltage of the distribution system 11. By measuring the power, the power consumption measuring unit 62 that measures the power consumption of the power consuming means connected to the distribution system 11, the voltage measuring unit 65 that measures the voltage of the distribution system 11, and the power target value setting unit 61 The power generation output set value calculation unit that calculates the power generation output set value of the fuel cell system 30 using the power target value set by the power measurement unit and the power consumption measurement value measured by the power measurement unit 62 (hereinafter referred to as a power measurement value). 63, and a power generation output command value calculation unit 64 that calculates and outputs a power generation output command value from the voltage measured by the voltage measurement unit 65 and the power generation output set value calculated by the power generation output set value calculation unit 63.

  Each component is configured in functional units. In an actual apparatus, one function may be composed of a plurality of elements, or may be composed of elements having a plurality of functions. . Although FIG. 2 shows an example in which the power target value setting unit is built in the power control device 40, the power target value setting unit 61 may be outside the power control device 40.

  The power measurement unit 62 inputs current and voltage, measures power, and outputs the measured power to the power generation output set value calculation unit 63. The power generation output set value calculation unit 63 obtains a power generation output set value using the power measurement value measured by the power measurement unit 62 and the power target value set by the power target value setting unit 61, and generates a power generation output command value calculation unit. 64. The power generation output command value calculation unit 64 calculates a power generation output command value from the voltage measurement value measured by the voltage measurement unit 65 and the power generation output set value calculated by the power generation output set value calculation unit 63, and calculates the power generation output command value. Output to the control unit 31 of the fuel cell system 30. When the voltage is a reference value and the power target value is a positive value of the generated power target, the power consumption is less than the power generation output, and the consumer supplies power to the power system. When the power target value is negative, power consumption> power generation output, and the customer receives power from the power system.

  In the above example, the case where the power target value is the target value of the generated power has been described, but the power target value may be power consumption. When the voltage is a reference value and the power target value is positive in terms of power consumption, power consumption> power generation output, and the consumer receives power from the power system. When the power target value is negative, power consumption <power generation output, and the customer supplies power to the power system.

  Next, the case where the voltage deviates from the reference value will be described. When the voltage is higher than the reference value, the power generation output command value calculation unit 64 decreases the power generation output command value. Since the power generation output of the fuel cell system 30 decreases, the power supplied to the power system decreases or the power received from the power system increases, and the voltage of the power system decreases.

  When the voltage is lower than the reference value, the power generation output command value calculation unit 64 increases the power generation output command value. Since the power generation output of the fuel cell system 30 increases, the power supplied to the power system increases or the power received from the power system decreases, and the voltage of the power system increases.

  According to the first embodiment, when the power consumption of the consumer in the power system fluctuates, the power generation output and the power consumption are unbalanced, or the voltage of the power system changes, the power consumption means in the consumer Since the power generation means in the consumer adjusts the power generation output according to the power consumption fluctuation and the power system voltage change, the voltage fluctuation of the power system can be suppressed and the voltage can be stabilized.

[Second Embodiment]
Next, a second embodiment will be described.
FIG. 3 is a diagram illustrating an example of a system configuration according to the second embodiment (an example in which a power control device is built in a distribution board). FIG. 4 is a diagram illustrating an internal configuration example of the power control apparatus according to the embodiment.

  3 and 4, the power control device 40 is built in the distribution board, and a power consumption command value (hereinafter referred to as a power command value) is input from the smart meter 50 to the power control device 40. Is an example of inputting a current and a voltage as an electric quantity, using a power command value instead of a power setting value, using a power consumption processing value (described later) obtained from the voltage and current instead of a power measurement value, An example in which a power generation output command value is obtained using a voltage regulation rate is shown. In FIG. 3, the power command value is input to the power control device 40 via the smart meter 50, but the power command value may be directly input to the power control device 40 without passing through the smart meter 50. However, it may be input via a device other than the smart meter 50.

  That is, as shown in FIG. 4, the power control device 40 receives a power command value input unit 51 that inputs a power command value of a power consumer, and one or a plurality of electric quantities of the distribution system 11, for example, current and voltage, respectively. A current calculation unit 41 and a voltage measurement unit 42 to measure, a power calculation unit 43 that calculates the power of the distribution system 11 from the current and voltage measured by the current measurement unit 41 and the voltage measurement unit 42, respectively, and a power calculation unit 43 Power calculation value processing that outputs a power consumption processing value (hereinafter referred to as a power processing value) obtained by performing adjustments such as averaging, smoothing, first-order lag, and integration on the power calculation value obtained by calculation Unit 44 and a power generation output set value calculation unit that calculates a power generation output set value from the power difference between the power processing value obtained by the power calculation value processing unit 44 and the power command value input by the power command value input unit 51 5, a voltage measurement unit 42 that measures the voltage of the distribution system 11, a voltage regulation rate setting unit 48 that sets a power voltage regulation rate described later, and a power generation output set value obtained by the power generation output set value calculation unit 45, A power generation output command value calculation unit 47 that calculates a power generation output command value using the voltage regulation rate set by the voltage regulation rate setting unit 48 and the voltage measurement value measured by the voltage measurement unit 42, and a power generation output command A power generation output command value output unit 49 that outputs the power generation output command value obtained by the value calculation unit 47 to the fuel cell system 30.

  Each component is configured in functional units. In an actual apparatus, one function may be composed of a plurality of elements, or may be composed of elements having a plurality of functions. .

  The current measuring unit 41 measures the current and outputs the measured current value to the power calculating unit 43. The voltage measurement unit 42 measures the voltage and outputs the voltage measurement value to the power calculation unit 43. The power calculation unit 43 obtains a power calculation value from the current measurement value and the voltage measurement value, and outputs the power calculation value to the power calculation value processing unit 44. Although FIG. 4 shows an example in which the calculated power value is obtained using the current and voltage, the calculated power value may be obtained using other amounts of electricity. Moreover, you may use the electric power value calculated | required outside the electric power control apparatus 40 instead of an electric power calculation value. When the power value obtained externally is used, the current measuring unit 41, the voltage measuring unit 42, and the power calculating unit 43 are not necessary.

  The power calculation value processing unit 44 receives the power calculation value, calculates a value suitable for the power generation output set value calculation unit, for example, an average value, and outputs the result as a power processing value. As a processing method, in addition to averaging, various methods such as smoothing, first-order delay, integration, and the like can be considered depending on the application.

  The power command value input unit 51 inputs the power command value output from the smart meter 50 and outputs it to the power generation output set value calculation unit 45. Although FIG. 4 shows an example in which the power command value from the smart meter 50 is input, the power command value may be input from other than the smart meter 50. As shown in FIG. 2 described above, a power target value setting unit that sets a power target value may be provided inside the power control apparatus 40, and the power target value may be used instead of the power command value.

  The power generation output set value calculation unit 45 obtains a power generation output set value using the power processing value and the power command value, and outputs it to the power generation output command value calculation unit 47.

  The voltage measurement unit 42 measures the voltage of the power distribution system 11 and outputs the voltage to the power generation output command value calculation unit 47 as a voltage measurement value. Although FIG. 4 shows an example in which the voltage is measured, the voltage may be obtained from an electric quantity other than the voltage. Further, a voltage value obtained outside the power control device 40 may be used as a voltage measurement value. When a voltage value obtained externally is used, the voltage measuring unit 42 is not necessary.

  The voltage regulation rate setting unit 48 outputs the set voltage regulation rate to the power generation output command value calculation unit 47. In FIG. 4, an example in which the voltage regulation rate setting unit 48 is provided in the power control device 40 is shown, but the voltage regulation rate may be input to the power generation output command value calculation unit 47 from the outside of the power control device 40. . When the voltage regulation rate is input from the outside, the voltage regulation rate setting unit 48 becomes unnecessary.

  The power generation output command value calculation unit 47 obtains a power generation output command value using the power generation output set value, the voltage regulation rate, and the voltage measurement value, and outputs the power generation output command value to the power generation output command value output unit 49. The power generation output command value output unit 49 outputs the power generation output command value to the control unit 31 of the fuel cell system 30.

  The power control device 40 further includes power storage means (not shown) for storing the power consumption before receiving the power consumption increase command or the power consumption decrease command, for example, and inputs the power command value of the power consumer. A power increase / decrease command value input means (not shown) for inputting a power consumption increase command value or a power consumption decrease command value of a power consumer is provided in place of the power command value input unit 51 to perform the power generation output set value calculation unit 45. The power generation output setting value may be calculated by using the power consumption stored value instead of the power processing value and using the power consumption increase command value or the power consumption decrease command value instead of the power command value. Good.

FIG. 5 is a diagram for explaining an example of the calculation function of the power generation output command value calculation unit of the power control apparatus according to the present embodiment. The vertical axis represents voltage, the horizontal axis represents the power generation output command value, the thick solid line represents the relationship between the voltage and the power generation output command value, the alternate long and short dash line represents the power generation output set value, and the dotted line represents the reference voltage. An example in which the power generation output set value (reference output) is 500 W, the maximum output is 1000 W, the reference voltage is 100 V, and the voltage regulation rate is 10% is shown. The voltage regulation rate is expressed by the following formula.
Voltage regulation rate (%)
= [(V2-V1) / reference voltage] / [(P1-P2) / maximum output] x 100 (%)
P1 = Output at Voltage V1 P2 = Output at Voltage V2 [Specific Example 1]
A second example of the operation of the power control apparatus 40 according to the present embodiment will be described using FIG. 3, FIG. 4, FIG. 5 and the following assumptions. The description will be made assuming that the state of each element shown in FIG. 3 is as follows. For convenience, the case where there is no loss in the electric circuit and the power factor of the load is 1 will be described. The power sign will be described based on power consumption.

Electric light: 100W (1A)
TV: 200W (2A)
Refrigerator: 300W (3A)
Air conditioner: 400W (4A)
Voltage: 100V
Power command value: 500W
In this example, the measured current value is 10 A, the measured voltage value is 100 V, and the calculated power value is 1000 W (consumption). Here, for convenience, the description will be made assuming that the power calculation value = the power processing value.

The power generation output set value is calculated by the following formula and is 500 W.
Power generation output set value = Power processing value−Power command value = 1000 W−500 W = 500 W
The relationship between the system voltage and the power generation output command value is shown in FIG. First, the operation when the system voltage is 100V will be described. The power generation output command value when the system voltage is 100 V is the same value as the power generation output set value, that is, 500 W. Is output. When the fuel cell system 30 outputs the output according to the command value, the total power (= power consumption-power generation output = 1000 W-500 W) of the consumer is 500 W, which is the value according to the power command value.

  Next, the operation when the system voltage rises to 102V will be described. Conditions other than the system voltage are the same as above. The power generation output command value when the system voltage is 102 V is 300 W, and a power generation output command value of 300 W is output from the power generation output command value output unit 49 to the control unit 31 of the fuel cell system 30. When the fuel cell system 30 outputs the output according to the command value, the total power consumption (= power consumption-power generation output) of the consumer is 700 W, which is 200 W larger than the power command value 500 W, and thus suppresses an increase in system voltage. Work to the side.

  Next, the operation when the system voltage is lowered to 98V will be described. Conditions other than the system voltage are assumed to be the same as above. When the system voltage is 98 V, the power generation output command value is 700 W, and a power generation output command value of 700 W is output from the power generation output command value output unit 49 to the control unit 31 of the fuel cell system 30. When the fuel cell system 30 outputs the output according to the command value, the total power consumption (= power consumption-power generation output) of the consumer is 300 W, which is 200 W smaller than the power command value 500 W, and thus suppresses the system voltage drop. Work to the side.

・ [Specific example 2]
A second operation example of the power control apparatus 40 according to the present embodiment will be described using FIGS. 3, 4, 6 and the following assumptions. The description will be made assuming that the state of each element shown in FIG. 3 is as follows. For convenience, the case where there is no loss in the electric circuit and the power factor of the load is 1 will be described.

Electric light: 100W (1A)
TV: 200W (2A)
Refrigerator: 300W (3A)
Air conditioner: 400W (4A)
Voltage: 100V
Power command value: 400W
In this example, the measured current value is 10 A, the measured voltage value is 100 V, and the calculated power consumption is 1000 W.

The power generation output set value is calculated by the following formula and becomes 600W.
Power generation output set value = power consumption calculation value−power command value = 1000 W−400 W = 600 W
The relationship between the system voltage and the power generation output command value is shown in FIG. The difference between FIG. 5 and FIG. 6 is the position of the power generation output set value (one-dot chain line) and the position of the relationship between the voltage and the power generation output command value (thick solid line).

  First, the operation when the system voltage is 100V will be described. The power generation output command value when the system voltage is 100 V is 600 W, and a power generation output command value of 600 W is output from the power generation output command value output unit 49 to the control unit 31 of the fuel cell system 30. When the fuel cell system 30 outputs the output according to the command value, the consumer's total power consumption (= power consumption-power generation output) becomes 400 W and the power consumption command value.

  Next, the operation when the system voltage rises to 102V will be described. Conditions other than the system voltage are assumed to be the same as above. The power generation output command value when the system voltage is 102 V is 400 W, and a power generation output command value of 400 W is output from the power generation output command value output unit 49 to the control unit 31 of the fuel cell system 30. When the fuel cell system 30 outputs the output according to the command value, the total power consumption (= power consumption-power generation output) of the consumer is 600 W, which is 200 W larger than the power consumption command value 400 W, thereby suppressing an increase in system voltage. Work to the side.

  Next, the operation when the system voltage is lowered to 98V will be described. Conditions other than the system voltage are assumed to be the same as above. The power generation output command value when the system voltage is 98 V is 800 W, and a command value of 800 W is output from the power generation output command value output unit 49 to the control unit 31 of the fuel cell system 30. When the fuel cell system 30 outputs the output according to the command value, the total power consumption (= power consumption-power generation output) of the consumer is 200 W, which is 200 W smaller than the power consumption command value 400 W, thereby suppressing the system voltage drop. Work to the side.

・ [Specific Example 3]
A third operation example of the power control apparatus 40 according to the present embodiment will be described using FIG. 3, FIG. 4, FIG. 7 and the following assumptions. The description will be made assuming that the state of each element shown in FIG. 3 is as follows.

Electric light: 100W (1A)
TV: 200W (2A)
Refrigerator: 300W (3A)
Air conditioner: 400W (4A)
Voltage: 100V
Power command value: 800W
In this example, the measured current value is 10 A, the measured voltage value is 100 V, and the calculated power consumption is 1000 W.

The power generation output set value is calculated by the following formula and becomes 200W.
Power generation output set value = power consumption calculated value−power command value = 1000 W−800 W = 200 W
The relationship between the system voltage and the power generation output command value is shown in FIG. The difference between FIG. 5 and FIG. 7 is the position of the power generation output set value (dashed line) and the position of the voltage and the power generation output command value (thick solid line).

  First, the operation when the system voltage is 100V will be described. The power generation output command value when the system voltage is 100 V is 200 W, and a power generation output command value of 200 W is output from the power generation output command value output unit 49 to the control unit 31 of the fuel cell system 30. When the fuel cell system 30 outputs the output according to the command value, the total power consumption (= power consumption-power generation output) of the consumer becomes a value according to the power consumption command value at 800 W.

  Next, the operation when the system voltage system voltage rises to 103V will be described. The conditions other than the system voltage are assumed to be the same as above. The power generation output command value when the system voltage system voltage is 103 V is −100 W, and a power generation output command value of −100 W is output from the power generation output command value output unit 49 to the control unit 31 of the fuel cell system 30. Since the fuel cell system 30 cannot produce a negative output, 100 W is consumed by the heating device for the water heater. When the heating device for the water heater consumes the electric power according to the command value, the total power consumption (= power consumption-power generation output) of the consumer is 1100 W, which is 300 W larger than the power consumption command value 800 W, so the system voltage system voltage rises Works on the side to suppress.

  Next, the operation when the system voltage system voltage is reduced to 97V will be described. The conditions other than the system voltage are assumed to be the same as above. The power generation output command value when the system voltage is 97 V is 500 W, and a power generation output command value of 500 W is output from the power generation output command value output unit 49 to the control unit 31 of the fuel cell system 30. Assuming that the fuel cell system 30 outputs the output according to the command value, the total power consumption (= power consumption-power generation output) of the consumer is 500 W, which is 300 W smaller than the power command value 800 W. Works on the side to suppress.

  In the above example, for the sake of convenience, the method of obtaining the power generation output command value from the diagrams (FIGS. 5, 6, and 7) showing the relationship between the system voltage and the power generation output command value has been described. Further, the power generation output command value may be obtained from a calculation formula, a numerical table, a numerical string, or the like. 5 to 7, the function of the voltage measurement value and the power generation output command value is a straight line. However, the function of the voltage measurement value and the power generation output command value may be a broken line or a curve.

  Although the fuel cell system 30 has been described as an example of the power generation device, a power generation device other than the fuel cell system 30 may be used.

・ [Specific Example 4]
A fourth example of the operation of the power control apparatus 40 according to the present embodiment will be described using FIGS. 3, 4, 6 and the following assumptions. Specific examples 1 to 3 show examples in the case of power consumption> generated power, but specific example 4 shows an example in the case of power generation output> power consumption. The description will be made assuming that the state of each element shown in FIG. 3 is as follows. For convenience, the case where there is no loss in the electric circuit and the power factor of the load is 1 will be described.

Electric light: 100W (10A)
TV: 0W (stop: 0A)
Refrigerator: 300W (3A)
Air conditioner: 0W (stop: 0A)
Voltage: 100V
Power command value: -200W
In this example, the measured current value is 4 A, the measured voltage value is 100 V, and the calculated power consumption is 400 W.

The power generation output set value is calculated by the following formula and becomes 600W.
Power generation output set value = power consumption calculated value−power command value = 400 W − (− 200 W) = 600 W
The relationship between the system voltage and the power generation output command value is shown in FIG. First, the operation when the system voltage is 100V will be described. The power generation output command value when the system voltage is 100 V is 600 W, and a power generation output command value of 600 W is output from the power generation output command value output unit 49 to the control unit 31 of the fuel cell system 30. When the fuel cell system 30 outputs the output according to the command value, the consumer's power consumption (= power consumption−power generation output = 400 W−600) is −200 W, which is the value according to the power command value. The power consumption of −200 W means that the consumer supplies +200 W of power.

  Next, the operation when the system voltage rises to 102V will be described. Conditions other than the system voltage are assumed to be the same as above. The power generation output command value when the system voltage is 102 V is 400 W, and a power generation output command value of 400 W is output from the power generation output command value output unit 49 to the control unit 31 of the fuel cell system 30. When the fuel cell system 30 outputs the output according to the command value, the consumer's power consumption (= power consumption-power generation output = 400 W-400 W) becomes 0 W, which is 200 W larger than the power command value-200 W, and the system voltage rises. Works on the side to suppress.

  Next, the operation when the system voltage is lowered to 98V will be described. Conditions other than the system voltage are assumed to be the same as above. The power generation output command value when the system voltage is 98 V is 800 W, and a power generation output command value of 800 W is output from the power generation output command value output unit 49 to the control unit 31 of the fuel cell system 30. When the fuel cell system 30 outputs the output according to the command value, the consumer's power consumption (= power consumption−power generation output = 400 W−800 W) is −400 W, which is −200 W smaller than the power command value −200 W, and the system voltage It works on the side that suppresses the decline. The power consumption of −400 W means that the consumer supplies +400 W of power.

  According to the second embodiment, in addition to the effects obtained in the first embodiment, the power generation means in the consumer adjusts the power generation output according to the voltage fluctuation of the power system, so that the voltage fluctuation of the power system is suppressed. It is possible to stabilize the voltage of the power system more effectively.

  As described in detail above, according to at least one embodiment, without installing a special device responsible for voltage adjustment of the power system, the power of the consumer as viewed from the power system is determined according to the voltage of the distribution system. By controlling, voltage fluctuations in the power system and the power transmission / distribution system can be suppressed and the voltage can be stabilized.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 11 ... Distribution system, 12 ... Distribution board, 13 ... Switchgear, 21 ... Electric light, 22 ... Television, 23 ... Refrigerator, 31 ... Air conditioner, 30 ... Fuel cell system, 31 ... Control part, 32 ... Fuel cell (main body) , 33 ... heating device for water heater, 34 ... power converter, 40 ... power control device, 41 ... current measurement unit, 42 ... voltage measurement unit, 43 ... power calculation unit, 44 ... power calculation value processing unit, 45 ... power generation output Set value calculation unit, 47 ... Power generation output command value calculation unit, 48 ... Voltage regulation rate setting unit, 49 ... Power generation output command value output unit, 51 ... Current command value input unit, 61 ... Power target value setting unit, 62 ... Power Measurement unit, 63 ... power generation output set value calculation unit, 64 ... power generation output command value calculation unit, 65 ... voltage measurement unit.

Claims (8)

A power target value setting means for setting a power consumption target value of a power consumer connected to the power system;
Power measuring means for measuring the power consumption of the power consuming means connected to the distribution system of the power consumer;
Using the power consumption target value set by the power target value setting means and the power consumption measurement value measured by the power measurement means, the power generation output setting value of the power generation means connected to the distribution system of the power consumer is obtained. Power generation output set value calculation means;
Voltage measuring means for measuring the voltage of the distribution system of the electric power consumer;
Using the voltage measurement value measured by the voltage measurement means and the power generation output setting value obtained by the power generation output setting value calculation means, the power generation output command value calculation means for obtaining and outputting the power generation output command value;
A power control apparatus comprising:   The power control apparatus according to claim 1, further comprising voltage regulation rate setting means for setting a voltage regulation rate, wherein the power generation output command value calculation means includes a voltage regulation rate set by the voltage regulation rate setting means, A power control apparatus that calculates a power generation output command value using a voltage measurement value measured by the voltage measurement means. In the electric power control device according to claim 1 or 2, instead of the electric power measuring means, an electric quantity measuring means for measuring one or a plurality of electric quantities of the distribution system of the electric power consumer,
Power calculating means for calculating a power consumption calculation value from the amount of electricity measured by the electricity amount measuring means,
The power generation output set value calculation means calculates the power generation output set value of the power generation means using the power consumption target value set by the power target value setting means and the power consumption calculation value obtained by the power calculation means. ,
A power control apparatus further comprising a power generation output command value output means for outputting the power generation output set value obtained by the power generation output set value calculation means as a power generation output command value.   4. The power control apparatus according to claim 3, wherein at least one of the one or plural electric quantities is a current or a voltage. A power control device according to claim 3 or 4, having a power instruction value input means for inputting a power instruction value in place of the power target value setting means, the power output set value calculating means, the power consumption target A power control apparatus that calculates a power generation output set value of the power generation means using a power consumption command value instead of a value. A power control device according to any one of claims 3 to 5, further averaged for power measurements or power calculated value, smoothing, power calculation value processing means for processing the first-order lag, or integrated The power control apparatus is characterized in that the result of processing by the power calculation value processing means is input to the power generation output set value calculation means as a power consumption processing value. The power control apparatus according to any one of claims 3 to 6 , further comprising power storage means for storing power before receiving a power increase or decrease command, and further receiving a power command value. A power increase / decrease command value input means for inputting a power consumption reduction command value instead of the input means is used, and a power consumption stored value is used instead of the power consumption calculated value. Instead, a power output setting value of the power generation means is calculated using a power consumption reduction command value. In the power control method for controlling the power generation means connected to the same power distribution system as the power consumption means connected to the power distribution system in the power consumer connected to the power system,
A power target value setting step for setting a power consumption target value of the power consumer;
A power measuring step of measuring the power consumption of the power consuming means connected to the distribution system of the power consumer;
Using the power consumption target value set in the power target value setting step and the power consumption measurement value measured in the power measurement step, a power generation output set value calculation step for calculating the power generation output set value of the power generation means,
A voltage measuring step for measuring the voltage of the distribution system of the power consumer;
A power generation output command value output step for obtaining and outputting a power generation output command value using the voltage measurement value measured in the voltage measurement step and the power generation output setting value obtained in the power generation output set value calculation step. A power control method.