JP5319156B2 - Power supply / demand control program, power supply / demand control apparatus, and power supply / demand control system - Google Patents

Description

  The present invention relates to an electric power supply and demand control program, an electric power supply and demand control device and an electric power supply and demand control system for controlling electric power supply and demand in a customer in which a distributed power source and power storage means are installed, and in particular, the reverse power flow to a substation. The present invention relates to an electric power supply and demand control program, an electric power supply and demand control device, and an electric power supply and demand control system.

  In recent years, the introduction of distributed power sources such as natural energy power generation and cogeneration has been advanced in response to environmental problems and energy saving needs. However, as the amount of distributed power sources introduced into the distribution system increases, reverse power flow occurs, and voltage increases locally, and reverse power flow from distribution lines to substations as a whole becomes a problem. In response to these problems, measures are being studied by controlling storage batteries and loads according to the output of the distributed power source.

  For example, technologies that combine solar power generation and storage batteries include those that control storage batteries to use inexpensive late-night power, those that operate solar power generation independently from commercial power systems, and storage batteries. A device for controlling the voltage has been studied (for example, see Patent Document 1). In addition, recently, control of storage batteries and power storage facilities for the purpose of reducing fluctuations in output of natural energy power generation and effective use of surplus power has been studied (see, for example, Patent Document 2 or 3).

Japanese Patent No. 3759151 JP 2007-151371 A JP 2006-158027 A

  However, none of the conventional techniques described above considers measures against reverse power flow. Basically, various systems provided in substations are realized on the premise that power flows only in one direction from the substation to the distribution line. For this reason, when a reverse power flow to the substation occurs, there is a possibility that these systems will be disturbed. Therefore, how to suppress the reverse power flow to the substation is a very important issue.

  The present invention has been made to solve the above-described problems caused by the prior art, and is a power supply and demand control program, a power supply and demand control device, and a power supply and demand control capable of suppressing reverse power flow to a substation. The purpose is to provide a system.

  In order to solve the above-described problems and achieve the object, the present invention is a power supply and demand control program for controlling the supply and demand of power in a consumer in which a distributed power source and a power storage means are installed, and the power receiving point of the consumer A power flow measurement procedure for measuring the power flow at the power receiving point, a target value calculation procedure for calculating a target value that is an upper limit value of the reverse power flow at the power receiving point, and a power flow measured by the power flow measurement procedure is the target value calculation. A power storage control procedure for causing the power storage means to charge the power stored in the power storage means when a reverse flow of an amount exceeding the target value calculated by the procedure is obtained. .

  Further, the present invention is the power supply / demand control apparatus according to the above-mentioned invention, wherein the power supply / demand control apparatus controls the supply / demand of power at a consumer provided with a distributed power source and power storage means, and measures the power flow at the power receiving point of the consumer. A tidal current measuring means, a target value calculating means for calculating a target value which is an upper limit value of the reverse power flow at the power receiving point, and a target in which the tidal current measured by the tidal current measuring means is calculated by the target value calculating means And a power storage control means for charging the power storage means with the electric power generated by the distributed power source when the amount of reverse power flow exceeds a value.

  Further, according to the present invention, in the above-described invention, the operation management device that manages the supply and demand operation of power from the substation to the distribution line, and the electric power that controls the supply and demand of power in the consumer in which the distributed power source and the power storage means are installed A power supply and demand control system having a power supply and demand control device, wherein the operation management device is measured by a first power flow measuring unit that measures a power flow to the distribution line and the first power flow measuring unit. Based on the power flow, target value calculation means for calculating a target value that is the upper limit value of the reverse power flow at the power receiving point of the consumer, and the target value calculated by the target value calculation means together with the target value setting command Command transmission means for transmitting to the power supply and demand control device, wherein the power supply and demand control device measures the power flow at the power receiving point of the consumer, and the second power flow measurement When the power flow measured by the stage becomes a reverse power flow exceeding the target value transmitted from the operation management device together with the target value setting command, the power storage means is charged with the power generated by the distributed power source. And a power storage control means.

  According to the present invention, it is possible to suppress the reverse power flow to the substation.

  Exemplary embodiments of a power supply / demand control program, a power supply / demand control apparatus, and a power supply / demand control system according to the present invention will be described below in detail with reference to the accompanying drawings. In the present embodiment, a case will be described in which the present invention is applied to a supply-demand interface (hereinafter referred to as a “supply-demand IF”) that controls various devices in a consumer in which a distributed power source and power storage means are installed.

  First, the concept of the supply and demand IF according to the first embodiment will be described. FIG. 1 is an explanatory diagram for explaining the concept of the supply and demand IF according to the first embodiment. The figure shows a configuration of a customer having a supply and demand IF according to the first embodiment. As shown in the figure, the customer includes a distributed power source, a storage battery, a load, and a supply and demand IF. Here, the distributed power source is a power source that generates power using natural energy such as sunlight, and the storage location is a power storage unit that stores the power generated by the distributed power source. The load is various devices that consume power, such as a water heater, a lighting device, and a heating device.

  In the first embodiment, in such a consumer, the supply and demand IF measures the power flow at the power receiving point, calculates a target value that is the upper limit value of the reverse power flow at the power receiving point, and the measured power flow When the reverse power flow exceeds the target value, the power generated by the distributed power source is charged to the storage battery.

  That is, in the first embodiment, an upper limit value is set for the reverse power flow at the power receiving point power flow according to the supply and demand IF, and the power flow at the consumer is set so that the reverse power flow from the power receiving point to the distribution line does not exceed the upper limit value. Since the supply and demand is controlled, it becomes possible to suppress the reverse power flow to the substation on a customer basis.

  Next, the configuration of the supply and demand IF according to the first embodiment will be described. FIG. 2 is a functional block diagram illustrating the configuration of the supply and demand IF according to the first embodiment. As shown in the figure, this supply and demand IF 100 particularly includes a storage unit 110 and a control unit 120.

  The storage unit 110 stores various information and programs. In particular, the storage unit 110 stores tidal current history data 111 and target value data 112. The tidal current history data 111 is data in which a tidal current history at a power receiving point of a consumer is recorded for a predetermined period. The target value data 112 is data in which a target value that is the upper limit value of the reverse power flow at the power receiving point is set.

  The control unit 120 has an internal memory for storing a control program such as an OS (Operating System), a program that defines various processing procedures, and necessary data, and executes various processes using these. In particular, the control unit 120 includes a power flow measurement unit 121, a target value calculation unit 122, a power storage control unit 123, and a load control unit 124.

  The tidal current measuring unit 121 measures the power tidal current at the power receiving point of the consumer. FIG. 3 is a diagram illustrating an example of a device configuration in a consumer. As shown in the figure, a consumer draws electric power from a distribution line through a lead-in line, receives the drawn electric power at a power receiving point, and supplies it to various devices installed in the house. For example, a consumer can control a general load (for example, a television or a refrigerator), a distributed power source, a storage battery, and an operation timing that are devices commonly used in life. A load to be controlled (for example, a water heater).

Here, the amount of power consumed by the general load is P _A , and the amount of power output from the distributed power source is P _B. In addition, the power amounts P _A and P _B are positive in the flow direction from the distribution line to the consumer. In that case, the tidal current measurement unit 121 measures the sum of the power amounts P _A and P _B as the power tidal current P _{1 at the} power receiving point. Then, the tidal current measuring unit 121 stores the measured history of the tidal current P _{1 in} the storage unit 110 as the tidal current history data 111.

Returning to FIG. 2, the target value calculation unit 122 calculates a target value that is the upper limit value of the reverse power flow at the power reception point of the consumer. FIG. 4 is a diagram for explaining calculation of the target value by the target value calculation unit 122. As shown in the figure, specifically, the target value calculation unit 122, when the tide P ₁ measured by the tidal current measurement unit 121 was reverse flow, power flow history data stored in the storage unit 110 Based on 111, the moving average of a predetermined period (for example, 6 hours) of the tidal current measured as the reverse tidal current is calculated. Then, the target value calculation unit 122 sets the calculated moving average as the target value P _{MAX in} the target value data 112 of the storage unit 110.

Referring back to FIG. 2, the power storage control unit 123 controls charging and discharging from the storage battery based on the power flow measured by the power flow measurement unit 121 and the target value calculated by the target value calculation unit 122. To do. Specifically, power storage control unit 123, power flow P ₁ measured by the tidal current measurement unit 121, detects whether or not the reverse power flow at any time.

When the power flow P ₁ is a reverse power flow, it is determined whether or not the amount of the reverse power flow exceeds the target value P _MAX set in the target value data 112 of the storage unit 110. _{When 1} is a reverse power flow with an amount exceeding the target value P _MAX , the storage battery is controlled so as to charge the power generated by the distributed power source so that the power flow P ₁ approaches P _MAX .

On the other hand, the power storage control unit 123, when the reverse power flow is solved in tide P ₁ measured by the tidal current measuring unit 121 controls the storage battery to discharge the power stored.

  The load control unit 124 controls the operation of various loads that consume power, such as a water heater, a lighting device, and a heating device.

  Next, a processing procedure of the supply and demand IF 100 according to the first embodiment will be described. FIG. 5 is a flowchart illustrating the processing procedure of the supply and demand IF 100 according to the first embodiment. In the supply and demand IF 100, a series of processing procedures described below are repeatedly executed during operation.

As shown in the figure, in the supply and demand IF 100, first, the tidal current measuring unit 121 measures the tidal current P ₁ = P _A + P _B at the power receiving point of the consumer (step S101), and the tidal current P ₁ is less than zero. If (in the case of reverse power flow) (step S102, Yes), the target value calculation unit 122 calculates the target value _{P MAX} (step S103).

In a case where the power flow _{P 1} measured by the tidal current measurement unit 121 exceeds the target value _{P MAX} (Step S104, Yes), the power storage control unit 123, the charging electric power generated by the distributed power to the battery (Step S105).

On the other hand, if power flow P ₁ measured by the tidal current measurement section 121 is above the 0 (if reverse power flow has been eliminated) (step S102, No), further, the charge amount of the battery is greater than 0 ( In step S106, Yes), the power storage control unit 123 discharges the power stored in the storage battery (step S107).

  The configuration and processing procedure of the supply and demand IF 100 according to the first embodiment have been described above. Here, an example of the power receiving point power flow control result by the supply and demand IF 100 described above is shown. FIG. 6 is a diagram illustrating an example of a power reception point power flow control result by the supply and demand IF 100 according to the first embodiment. The graph shown in the figure shows the control results when the photovoltaic power generation is used as a distributed power source, the power generation amount is 4 kW, the storage battery capacity is 10 kWh, and the target value is a 6-hour moving average. When not used, when storage battery control is performed, the power reception point power flow in each case and the daily fluctuation of the target value are shown.

  As shown in the figure, when a storage battery is not used, for example, between 8 o'clock and 14 o'clock in the daytime period, the amount of power generated by solar power generation becomes large, so a reverse power flow occurs at the receiving point. Arise. However, when storage battery control is performed by the supply and demand IF 100, the reverse power flow exceeds the target value during that time period, and thus the power generated by solar power generation is charged into the storage battery. As a result, reverse power flow at the power receiving point is suppressed.

  Further, when the storage battery is not used, for example, power generation by solar power generation is not performed between 17:00 and 22:00, which is a night time zone, and thus the tidal current at the power receiving point is a forward tidal current. However, when storage battery control is performed by the supply and demand IF 100, power is discharged from the storage battery charged in the daytime at the timing when the reverse power flow is eliminated, so the power supplied from the substation is not used. In both cases, power consumption can be covered by consumers.

  As described above, according to the first embodiment, the power flow measurement unit 121 measures the power flow at the power reception point of the consumer, and the target value calculation unit 122 sets the upper limit value of the reverse power flow at the power reception point. The target value is calculated. Then, when the tidal current measured by the tidal current measuring unit 121 becomes a reverse power flow exceeding the target value calculated by the target value calculating unit 122, the power storage control unit 123 uses the power generated by the distributed power source. Charge the storage battery. Therefore, it becomes possible to suppress the reverse power flow to the substation on a consumer basis.

  Further, according to the first embodiment, the target value calculation unit 122 calculates the moving average of the reverse tidal current out of the tidal current measured by the tidal current measuring unit 121 as the target value, so that the tidal current at the power receiving point is leveled. It becomes possible.

  Further, according to the first embodiment, the power storage control unit 123 discharges the power stored in the storage battery when the reverse power flow is eliminated in the power flow measured by the power flow measurement unit 121. The power generated in the belt can be used effectively.

  In the first embodiment, the case where the target value calculation unit 122 calculates the moving average of the reverse power flow as the target value has been described. However, in this case, since the storage battery is charged even when the reverse current is small, if the capacity of the storage battery is limited, the capacity for storing the power generated by the distributed power source may be insufficient. .

  Therefore, for example, the target value calculation unit 122 may calculate the threshold value determined based on the history data of the reverse power flow out of the power flow measured by the power flow measurement unit 121 and the remaining capacity of the storage battery as the target value. .

FIG. 7 is a diagram for explaining calculation of a target value based on the history data of reverse power flow and the remaining capacity of the storage battery. As shown in the figure, in this case, the target value calculation unit 122 detects the time at any time, and is stored in the storage unit 110 when a predetermined time (for example, midnight) is reached. Based on the flow history data 111, a threshold is calculated based on reverse flow history data for a predetermined period (for example, 10 days) and the remaining capacity of the storage battery, and the calculated threshold is set as a target value P _MAX .

  At this time, for example, the target value calculation unit 122 acquires the reverse power flow on the day when the reverse power flow becomes the maximum from the power flow history data 111 for the past 10 days, and acquires the acquired reverse power flow and the remaining storage battery for a predetermined time. Using the capacity, the threshold value is calculated so that reverse threshold flow threshold excess = storage battery remaining capacity × threshold calculation gain. The threshold calculation gain here is an arbitrary value determined between 0 and 1, and is appropriately determined according to how much remaining power is left in the storage battery.

  Here, an example of the power receiving point power flow control result when the target value is calculated based on the history data of the reverse power flow and the remaining capacity of the storage battery is shown. FIG. 8 is a diagram illustrating an example of the power receiving point power flow control result when the target value is calculated based on the history data of the reverse power flow and the remaining capacity of the storage battery. The graph shown in the figure shows the control result when the threshold calculation gain is set to 0.5 under the same conditions as in the example shown in FIG. 6. When the storage battery is not used, the storage battery control is performed. 1 shows the daily fluctuation of the power receiving point power flow and the threshold value (target value) in each case.

  As shown in the figure, in this case, the battery is charged with power only when the threshold calculated based on the history data of the reverse power flow and the remaining capacity of the storage battery is exceeded during the time period when the reverse power flow occurs. Is done. Therefore, it becomes possible to suppress the reverse power flow only during the time period when the reverse power flow becomes large, and the maximum reverse power flow can be effectively suppressed even when the capacity of the storage battery is limited.

  By the way, in the said Example 1, supply-and-demand IF100 sets an upper limit to the reverse power flow of a power receiving point tidal current, and controls the power supply and demand so that the reverse power flow from a power receiving point to a distribution line may not exceed the upper limit. Thus, the case where the reverse power flow is controlled for each customer is described. However, for example, even if a reverse power flow is generated in some of a plurality of customers, a reverse power flow to the substation does not occur unless a reverse power flow is generated in units of distribution lines.

  Therefore, in this second embodiment, the present invention is applied to an operation management system that manages the supply and demand operation of power from the substation to the distribution line, and the operation management system monitors the power flow state to the distribution line at the substation, A case will be described in which a reverse flow is controlled for each distribution line by determining a target value that is the reverse flow upper limit value of each consumer according to the flow state and transmitting the target value to the supply and demand IF of each consumer.

  First, the concept of the operation management system and the supply and demand IF according to the second embodiment will be described. FIG. 9 is an explanatory diagram for explaining the concept of the operation management system and the supply and demand IF according to the second embodiment. The figure shows the configuration of a substation equipped with an operation management system and a customer equipped with a supply and demand IF. As shown in the figure, the substation includes an operation management system, and the customer includes a distributed power source, a storage battery, a load, and a supply and demand IF. Here, the operation management system and the supply and demand IF are connected to be communicable via a network such as the Internet.

  In the second embodiment, at the substation, the operation management system measures the power flow to the distribution line, and based on the measured power flow, becomes the upper limit value of the reverse power flow at the power receiving point of the consumer. The target value is calculated, and the calculated target value is transmitted to the power supply and demand control device together with the target value setting command. In addition, in the consumer, the supply and demand IF measures the power flow at the power receiving point of the customer, and the measured flow becomes a reverse flow that exceeds the target value transmitted from the operation management system together with the target value setting command. In the case, the storage battery is charged with the electric power generated by the distributed power source.

  That is, in the second embodiment, the upper limit value of the reverse power flow of each consumer is determined by the operation management system in accordance with the power flow state to the distribution line, and transmitted to the supply and demand IF. The supply and demand IF is controlled by the supply and demand IF so that the reverse flow from the receiving point to the distribution line does not exceed the upper limit value transmitted from the operation management system. It becomes possible to suppress the reverse power flow.

  Next, the configuration of the operation management system and the supply and demand IF according to the second embodiment will be described. FIG. 10 is a functional block diagram illustrating the configuration of the operation management system and the supply and demand IF according to the second embodiment. Here, for convenience of explanation, functional units that play the same functions as the respective units shown in FIG.

  As shown in the figure, the operation management system 200 and the supply-and-demand IF 300 are communicably connected via a network 400 such as the Internet.

  The operation management system 200 particularly includes a communication control unit 230, a storage unit 210, and a control unit 220. The communication control unit 230 controls transmission / reception of various information exchanged with the supply and demand IF 300 via the network 400. For example, the communication control unit 230 transmits a target value setting command for instructing setting of a target value, a storage battery discharge command for instructing discharge of the storage battery, and the like to the supply and demand IF 300.

  The storage unit 210 stores various information and programs. In particular, the storage unit 210 stores tidal current history data 211. The power flow history data 211 is data in which a power flow history to the distribution line is recorded for a predetermined period.

  The control unit 220 has an internal memory for storing a control program such as an OS (Operating System), a program defining various processing procedures, and necessary data, and executes various processes using these. In particular, the control unit 220 includes a power flow measurement unit 221, a target value calculation unit 222, and a command transmission unit 223.

  The power flow measurement unit 221 measures the power flow to the distribution line. FIG. 11 is a diagram illustrating an example of a device configuration in a substation and a customer. As shown in the figure, the substation includes an operation management system that manages the supply and demand operation of power to the distribution line, and supplies power to each consumer through the distribution line. On the other hand, a consumer has a supply and demand IF for controlling various devices installed in the house, and a plurality of consumers are connected to each distribution line.

Here, power flow measuring unit 221 measures the power of the tide P ₂ to the distribution line in the operational management system. Then, the tidal current measuring unit 221 stores the measured history of the tidal current P _{2 in} the storage unit 210 as the tidal current history data 211.

Returning to FIG. 10, the target value calculation unit 222 calculates a target value that is an upper limit value of the reverse power flow at the power receiving point of the consumer, based on the power flow measured by the power flow measurement unit 221. For example, the target value calculation portion 222, when the power flow P ₂ measured by the tidal current measurement unit 221 was reverse flow, based on the trend history data 211 stored in the storage unit 210, is determined as a reverse power flow The moving average of a predetermined tidal current period (for example, 6 hours) is calculated, and a value obtained by equally distributing the calculated moving average by the number of supply and demand IFs is set as a target value P _MAX .

Alternatively, the target value calculation unit 222 detects time from time to time, and when a predetermined time (for example, midnight) is reached, based on the tidal current history data 211 stored in the storage unit 210, the target value calculation unit 222 A threshold value is calculated based on the reverse flow history data of minutes (for example, 10 days) and the remaining capacity of the storage battery, and a value obtained by equally distributing the calculated threshold value by the number of supply and demand IFs is set as a target value P _MAX .

Here, the calculation of the target value performed by the target value calculation unit 222 is performed by the same method as the calculation of the target value described with reference to FIGS. That is, here, instead of the tidal current P ₁ measured by the tidal current measuring unit 121, the tidal current P ₂ measured by the tidal current measuring unit 221 is used.

Further, in order to adjust the reverse power flow suppression amount of the power flow P ₂ to the distribution line, the target value calculation unit 222 calculates a value obtained by adding a certain margin amount P ₃ to the power flow measured by the power flow measurement unit 221. ₂ , the amount of reverse power flow suppression at the power receiving point of the consumer may be calculated. At this time, the margin amount P ₃ may be positive or negative.

The command transmission unit 223 transmits various commands for instructing various operations to the supply and demand IF 300 based on the power flow measured by the power flow measurement unit 221 and the target value calculated by the target value calculation unit 222. Specifically, the command transmission unit 223 transmits the target value P _MAX calculated by the target value calculation unit 222 to the supply and demand IF 300 along with the target value setting command via the communication control unit 230.

Further, the command transmitting unit 223, when the reverse power flow is solved in tidal P ₂ measured by the tidal current measuring unit 221 via the communication control unit 230 transmits the battery discharge command to supply IF300.

  The supply / demand IF 300 includes a communication control unit 330, a storage unit 310, and a control unit 320, in particular. The communication control unit 330 controls transmission / reception of various information exchanged with the operation management system 200 via the network 400. For example, the communication control unit 330 receives the target value setting command and the storage battery discharge command described above from the operation management system 200.

  The storage unit 310 stores various information and programs. In particular, the storage unit 310 stores target value data 112.

  The control unit 320 has an internal memory for storing a control program such as an OS (Operating System), a program that defines various processing procedures, and necessary data, and executes various processes. In particular, the control unit 320 includes a command receiving unit 325, a power flow measuring unit 121, a power storage control unit 323, and a load control unit 124.

The command receiving unit 325 receives various commands transmitted from the operation management system 200 and delivers the received command to each functional unit as appropriate. Specifically, when receiving the target value setting command, the command receiving unit 325 sets the target value P _MAX transmitted together with the received target value setting command in the target value data 112 of the storage unit 310. In addition, when receiving a storage battery discharge command, the command receiving unit 325 delivers the received storage battery discharge command to the power storage control unit 323.

  Based on the power flow measured by the power flow measurement unit 121 and the target value calculated by the target value calculation unit 222, and the command transmitted from the operation management system 200, the power storage control unit 323 To control the discharge.

Specifically, power storage control unit 323, at any time determine tide P ₁ measured by the tidal current measurement unit 121, whether or not exceeds the target value P _MAX set in the target value data 112 in the storage unit 310 When the power flow P ₁ is a reverse power flow exceeding the target value P _MAX , the storage battery is controlled so as to charge the power generated by the distributed power source so that the power flow P ₁ approaches P _MAX. .

  On the other hand, when the storage battery discharge command is delivered from the command receiving unit 325, the power storage control unit 323 controls the storage battery to discharge the stored power.

  Next, processing procedures of the operation management system 200 and the supply and demand IF 300 according to the second embodiment will be described. FIG. 12 is a flowchart illustrating a processing procedure of the operation management system 200 according to the second embodiment, and FIG. 13 is a flowchart illustrating a processing procedure of the supply and demand IF 300 according to the second embodiment. In the operation management system 200 and the supply and demand IF 300, a series of processing procedures described below are repeatedly executed during operation.

As shown in FIG. 12, the operation management system 200, first, power flow measuring unit 221 measures the power flow _{P 2} to the distribution line (step S201), if the power flow _{P 2} was below 0 (the reverse flow If) (step S202, Yes), the target value calculation unit 222 calculates the target value _{P MAX} (step S203), and transmits the calculated target value _{P MAX} to supply IF300 with the target value setting instruction (step S204 ).

On the other hand, if the power flow _{P 2} measured by the tidal current measurement unit 221 was above the 0 (if reverse power flow has been eliminated) (step S202, No), command transmission portion 223, supply the battery discharge command IF300 (Step S205).

As shown in FIG. 13, in the supply and demand IF 300, first, the tidal current measurement unit 121 measures the tidal current P ₁ = P _A + P _B at the power receiving point (step S301).

Then, when the command receiving unit 325 receives a target value setting instruction (step S302, Yes), it sets the target value _{P MAX} received in the target value data 112 in the storage unit 310 (step S303).

Further, the command receiving section 325 without receiving the battery discharge command (step S304, No), the target value tide _{P 1} measured by the tidal current measurement section 121 is set to the target value data 112 in the storage unit 310 When the reverse power flow exceeds the P _MAX (step S305, Yes), the power storage control unit 323 charges the storage battery with the power generated by the distributed power source (step S306).

  On the other hand, the command receiving unit 325 receives the storage battery discharge command (step S304, Yes), and further, when the charge amount of the storage battery is larger than 0 (step S307, Yes), the power is discharged from the storage battery (step S308). ).

  As described above, in the second embodiment, in the operation management system 200, the power flow measurement unit 221 measures the power flow of power to the distribution line, and the target value calculation unit 222 is measured by the power flow measurement unit 221. Based on the power flow, a target value that is the upper limit value of the reverse power flow at the power receiving point of the consumer is calculated, and the command transmission unit 223 supplies the target value calculated by the target value calculation unit 222 together with the target value setting command. Transmit to IF300. Then, in the supply and demand IF 300, the tidal current measuring unit 121 measures the power tidal current at the power receiving point of the consumer, and the power storage control unit 323 determines that the tidal current measured by the tidal current measuring unit 121 is the target value setting command from the operation management system 200. When the reverse power flow exceeds the target value transmitted together with the power, the storage battery is charged with the power generated by the distributed power source. Therefore, it becomes possible to suppress the reverse power flow to the substation on a distribution line basis.

  By the way, in the said Example 1 and 2, although the case where the reverse power flow was suppressed by charging the storage battery with the electric power generated by the distributed power source was explained, for example, by combining the control of the storage battery and the control of the load Moreover, the reverse power flow can be suppressed more efficiently.

  Therefore, in the third embodiment, a case will be described in which power is consumed by operating a predetermined load such as a water heater at the same time that the storage battery is charged with power. Specifically, in this case, the load control unit 124 generates power from the distributed power source during a time period in which the reverse power flow is maximized from the reverse power flow history data for a predetermined period (for example, 10 days). A predetermined load to be controlled that consumes the electric power is operated.

  Here, an example of the power receiving point power flow control result when the load is operated together with the charging of the storage battery is shown. FIG. 14 is a diagram illustrating an example of a power reception point power flow control result when the load is operated along with charging of the storage battery. The graph shown in the figure shows the case where the water heater is operated for 1 hour from 10:00, 13:00, and 14:00 under the same conditions as in the example shown in FIG. When the storage battery control is performed, when the storage battery control and the load control are performed together, the daily fluctuation of the power reception point power flow and the threshold value (target value) in each case are shown.

  As shown in the figure, when the storage battery control and the load control are performed simultaneously, the reverse power flow can be reduced by the amount of power consumed by the load. Therefore, in this case, the threshold value is increased as compared with the case of controlling only the storage battery, and the effect of suppressing reverse power flow is enhanced.

  Furthermore, as the above-mentioned predetermined control object, for example, when a load capable of converting electric energy into other energy is operated and the obtained energy is stored, for example, a water heater, a distributed power source It becomes possible to control the reverse power flow while effectively using the power generated by.

  Of the processes described in the above embodiments, all or part of the processes described as being performed automatically can be performed manually, or the processes described as being performed manually can be performed. All or a part can be automatically performed by a known method.

  In addition, the processing procedure, control procedure, specific name, and information including various data and parameters shown in the above-described document and drawings can be arbitrarily changed unless otherwise specified.

  Each component of each illustrated device is functionally conceptual and does not necessarily need to be physically configured as illustrated. In other words, the specific form of distribution / integration of each device is not limited to that shown in the figure, and all or a part thereof may be functionally or physically distributed or arbitrarily distributed in arbitrary units according to various loads or usage conditions. Can be integrated and configured.

  Furthermore, all or a part of each processing function performed in each device may be realized by a CPU and a program that is analyzed and executed by the CPU, or may be realized as hardware by wired logic.

  As described above, the power supply / demand control program, the power supply / demand control apparatus, and the power supply / demand control system according to the present invention are useful when controlling the supply / demand of power in a consumer in which a distributed power source and a power storage unit are installed, It is particularly suitable when there is a possibility of reverse power flow to the substation.

It is explanatory drawing for demonstrating the concept of supply-and-demand IF which concerns on the present Example 1. FIG. It is a functional block diagram which shows the structure of the supply-and-demand IF which concerns on the present Example 1. FIG. It is a figure which shows an example of the apparatus structure in a consumer. It is a figure for demonstrating calculation of the target value by a target value calculation part. It is a flowchart which shows the process sequence of supply-and-demand IF which concerns on the present Example 1. FIG. It is a figure which shows an example of the receiving point power flow control result by the supply-and-demand IF which concerns on the present Example 1. FIG. It is a figure for demonstrating calculation of the target value based on the historical data of a reverse power flow, and the remaining capacity of a storage battery. It is a figure which shows an example of the receiving point power flow control result at the time of calculating a target value based on the historical data for reverse power flow, and the remaining capacity of a storage battery. It is explanatory drawing for demonstrating the concept of the operation management system which concerns on the present Example 2, and supply-and-demand IF. It is a functional block diagram which shows the structure of the operation management system which concerns on the present Example 2, and supply-and-demand IF. It is a figure which shows an example of the apparatus structure in a substation and a customer. 10 is a flowchart illustrating a processing procedure of the operation management system according to the second embodiment. It is a flowchart which shows the process sequence of supply-and-demand IF which concerns on the present Example 2. FIG. It is a figure which shows an example of the receiving point power flow control result at the time of making load drive | operate with the charge to a storage battery.

Explanation of symbols

100,300 Supply-demand IF
110, 310 Storage unit 111 Power flow history data 112 Target value data 120, 320 Control unit 121 Power flow measurement unit 122 Target value calculation unit 123, 323 Power storage control unit 124 Load control unit 325 Command reception unit 330 Communication control unit 200 Operation management system 210 Storage unit 211 Power flow history data 220 Control unit 221 Power flow measurement unit 222 Target value calculation unit 223 Command transmission unit 230 Communication control unit 400 Network

Claims (8)

A power supply and demand control program for controlling the supply and demand of power in a consumer in which a distributed power source and power storage means are installed,
A tidal current measurement procedure for measuring a power tidal current at a power receiving point of the consumer;
A target value calculation procedure for calculating a moving average of a tidal current measured as a reverse tidal current among tidal currents measured by the tidal current measuring procedure as a target value that is an upper limit value of the reverse tidal current of the power at the power receiving point;
Power storage that causes the power storage means to charge the power generated by the distributed power source when the power flow measured by the power flow measurement procedure becomes a reverse power flow that exceeds the target value calculated by the target value calculation procedure Control procedures;
A power supply and demand control program characterized by causing a computer to execute. A power supply and demand control program for controlling the supply and demand of power in a consumer in which a distributed power source and power storage means are installed,
A tidal current measurement procedure for measuring a power tidal current at a power receiving point of the consumer;
Based on the history data of the reverse power flow of the power flow measured by the power flow measurement procedure and the remaining capacity of the power storage means, the excess amount of the reverse power flow in the reverse power history data becomes the remaining capacity of the power storage means. A target value calculation procedure for calculating a threshold value that is a value obtained by multiplying by a predetermined ratio as a target value that is an upper limit value of the reverse power flow at the power receiving point;
Power storage that causes the power storage means to charge the power generated by the distributed power source when the power flow measured by the power flow measurement procedure becomes a reverse power flow that exceeds the target value calculated by the target value calculation procedure Control procedures;
A power supply and demand control program characterized by causing a computer to execute. Said power storage control step, when the reverse flow in the power flow measured by the power flow measuring procedure is eliminated, according to claim 1 or 2, characterized in that discharging the power stored in said storage means Electricity supply and demand control program. When the tidal current measured by the tidal current measurement procedure becomes a reverse tidal current that exceeds the target value calculated by the target value calculating procedure, a predetermined load that consumes the power generated by the distributed power source is operated. The power supply and demand control program according to claim 1 , further comprising a load control procedure to be executed. A power supply and demand control device for controlling the supply and demand of power in a consumer in which a distributed power source and power storage means are installed,
Tidal current measuring means for measuring the power tidal current at the power receiving point of the consumer;
Target value calculating means for calculating a moving average of the tidal current measured as a reverse tidal current out of the tidal current measured by the tidal current measuring means as a target value that is an upper limit value of the reverse tidal current of the power at the power receiving point;
Power storage that causes the power storage means to charge the power generated by the distributed power source when the power flow measured by the power flow measurement means becomes a reverse power flow that exceeds the target value calculated by the target value calculation means Control means;
A power supply and demand control device comprising: A power supply and demand control device for controlling the supply and demand of power in a consumer in which a distributed power source and power storage means are installed,
Tidal current measuring means for measuring the power tidal current at the power receiving point of the consumer;
Based on the history data of the reverse power flow out of the power flow measured by the power flow measuring means and the remaining capacity of the power storage means, the excess amount of the reverse power flow threshold in the history data of the reverse power flow becomes the remaining capacity of the power storage means. Target value calculation means for calculating a threshold value that is a value obtained by multiplying by a predetermined ratio as a target value that is an upper limit value of the reverse power flow at the power receiving point;
Power storage that causes the power storage means to charge the power generated by the distributed power source when the power flow measured by the power flow measurement means becomes a reverse power flow that exceeds the target value calculated by the target value calculation means Control means;
A power supply and demand control device comprising: An electric power supply and demand control system having an operation management device that manages the supply and demand operation of electric power from a substation to a distribution line, and an electric power supply and demand control device that controls the supply and demand of electric power in a consumer in which a distributed power source and a storage means are installed There,
The operation management device is
First power flow measuring means for measuring power flow to the distribution line;
Target value calculating means for calculating a moving average of the tidal current measured as a reverse power out of the tidal current measured by the first tidal current measuring means as a target value that is an upper limit value of the reverse power tidal current at the power receiving point;
Command transmitting means for transmitting the target value calculated by the target value calculating means to the power supply and demand control device together with a target value setting command;
With
The power supply and demand control device is
A second tidal current measuring means for measuring a power tidal current at a power receiving point of the consumer;
When the tidal current measured by the second tidal current measuring means becomes a reverse tidal current exceeding the target value transmitted together with the target value setting command from the operation management device, the power generated by the distributed power source Power storage control means for charging the power storage means,
A power supply and demand control system characterized by comprising: An electric power supply and demand control system having an operation management device that manages the supply and demand operation of electric power from a substation to a distribution line, and an electric power supply and demand control device that controls the supply and demand of electric power in a consumer in which a distributed power source and a storage means are installed There,
The operation management device is
First power flow measuring means for measuring power flow to the distribution line;
Based on the history data of the reverse power flow out of the power flow measured by the first power flow measurement means and the remaining capacity of the power storage means, the excess threshold of the reverse power flow in the history data of the reverse power flow indicates that the power storage means Target value calculation means for calculating a threshold value that is a value obtained by multiplying the remaining capacity by a predetermined ratio as a target value that is an upper limit value of the reverse flow of power at the power receiving point;
Command transmitting means for transmitting the target value calculated by the target value calculating means to the power supply and demand control device together with a target value setting command;
With
The power supply and demand control device is
A second tidal current measuring means for measuring a power tidal current at a power receiving point of the consumer;
When the tidal current measured by the second tidal current measuring means becomes a reverse tidal current exceeding the target value transmitted together with the target value setting command from the operation management device, the power generated by the distributed power source Power storage control means for charging the power storage means,
A power supply and demand control system characterized by comprising:

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