JP2016152747A - Power supply control device, power supply control method and power supply control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply control device capable of controlling power supply amounts of a plurality of photovoltaic power plants.SOLUTION: The power supply control device for controlling power supply amounts of a plurality of photovoltaic power plants that cover electric power demand in a predetermined area comprises: a storage unit 2 storing a predictive power generation amount that is a predictive value of a daily power generation amount of each of the plurality of photovoltaic power plants and a predictive demand amount that is a predictive value of daily electric power demand in the predetermined area; and a control unit 1 that performs processing for allocating the predictive demand amount to each of the photovoltaic power plants on the basis of the predictive power generation amount of each of the photovoltaic power plants and processing for controlling a power supply amount for the unit of a photovoltaic power plant in accordance with a result of comparing the predictive demand amount allocated to each of the photovoltaic power plants with an actual power generation amount of each of the photovoltaic power plants.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power supply control device, a power supply control method, and a power supply control program for controlling a power supply amount of a solar power plant.

  2. Description of the Related Art Conventionally, development of a power generation system including a storage battery has been promoted as one technique for suppressing fluctuations in output power in solar power generation.

  In the following Patent Document 1, a solar cell, an inverter connected to the solar cell and connected to the power system, a charging / discharging unit connected to a bus connecting the inverter and the solar cell, and connecting to the charging / discharging unit A power generation system including the stored power storage means is disclosed. In this system, the fluctuation of the inverter output is suppressed by controlling the charging / discharging unit so that the power storage means performs charging / discharging according to the fluctuation of the generated power of the solar cell.

  Further, in Patent Document 2 below, as a power generation system including a power generation device and a power storage unit capable of storing generated power, a change amount when the generated power is changed from the first power to the second power is predetermined. A power generation system that controls charging / discharging of the power storage means when the amount of change is greater than or equal to the change amount is disclosed. In this system, by controlling so that charging and discharging is not performed when the amount of change in generated power is smaller than a predetermined amount of change, the variation in output power in solar power generation is reduced while reducing the number of charging and discharging of the power storage means. Suppressed.

Japanese Patent No. 5354840 Japanese Patent No. 5479182

  However, the technique described in the above cited document is intended to suppress fluctuations in the output power of the power station itself that performs solar power generation, and suppresses fluctuations in the output of other power stations. Therefore, it does not adjust the output power of the power plant. That is, a plurality of photovoltaic power plants do not adjust output power in cooperation with each other in order to satisfy the power demand in a region under the jurisdiction of a specific power company.

  For example, when a specific solar power plant receives a request for output restriction, etc., and the output power is reduced to 0 or significantly reduced, other power plants work together to supply power to meet the local power demand. Although it is necessary to adjust, the technique described in the above cited document does not describe a technique that can deal with such a case.

  The present invention has been made in view of the above, and in the case where power demand of a specific region is covered by power generation of a plurality of solar power plants, each power plant is made up to compensate for the shortage of power demand in that region. It is an object of the present invention to provide a power supply control device, a power supply control method, and a power supply control program capable of controlling the amount of power supply.

  In order to solve the above-described problems and achieve the object, the power supply control device according to the present invention is a power supply control device that controls the power supply amount of a plurality of solar power plants that covers power demand in a predetermined region. Storage means for storing a predicted power generation amount that is a predicted value of the daily power generation amount of each of the plurality of solar power plants, and a predicted demand amount that is a predicted value of the daily power demand in a predetermined region; The first process of allocating the predicted demand to each solar power plant based on the predicted power generation of each solar power plant, and the predicted demand allocated to each solar power plant and each solar power plant Control means for performing a second process for controlling the power supply amount in units of photovoltaic power plants according to the result of comparison with the actual power generation amount, and the control means includes a designated time zone in the first process. Solar that received a request for output restriction to limit the power supply of When it is determined that a power plant exists, a preparation time zone is set up to prepare for the output restriction before the output restriction, and each solar power plant is set for a time zone other than the preparation time zone and the output restriction time zone. The forecasted demand is allocated to each photovoltaic power plant according to the ratio of the forecasted power generation, and the ratio of the forecasted power generation ratio is allocated to the restricted solar power plant for the preparation time zone. To reduce the proportion of predicted demand allocated to solar power plants that are not subject to restrictions, and allocate the predicted demand to each solar power plant according to the ratio after the correction. , The ratio of the predicted power generation ratio is corrected so as to increase the proportion of the predicted demand allocated to unrestricted solar power plants, and the predicted demand is allocated to each solar power plant according to the corrected ratio It is characterized by that.

  The power supply control device according to the next invention is a power supply control device that controls the power supply amount of a plurality of photovoltaic power plants that covers the power demand in a predetermined area, and each of the plurality of photovoltaic power plants. Predicted power generation amount that is a predicted value of daily power generation amount, predicted demand amount that is a predicted value of daily power demand in a predetermined region, and prediction value that is a predicted value of the daily charge amount of each solar power plant A storage means storing the charge amount, a first process for allocating a predicted demand amount to each solar power plant based on the predicted power generation amount and the predicted charge amount of each solar power plant, and each solar power plant Control means for performing a second process of controlling the power supply amount for each solar power plant according to a comparison result between the allocated predicted demand amount and the actual power generation amount of each solar power plant. In the first process, the power supply for the specified time zone is When it is determined that there is a solar power plant that has received a request for limited output restriction, a preparation time zone for preparing for the output restriction is set before the output restriction, and other than the preparation time zone and the output restriction time zone For each of these solar power plants, the predicted demand was allocated to each solar power plant according to the ratio of the total power amount of the predicted power generation amount and the predicted charge amount of each solar power plant. Correct the ratio of the amount of power to increase the proportion of predicted demand allocated to solar power plants subject to restriction and reduce the proportion of predicted demand allocated to solar power plants not subject to restriction. Allocate the predicted demand to each solar power plant according to the ratio, and increase the ratio of the predicted demand allocated to the solar power plants that are not subject to the total power amount ratio for the output time limit So that after correction Allocate the predicted demand to each solar power plant according to, characterized in that.

  The power supply control method according to the next invention is a power supply control method by a power supply control device that controls the power supply amount of a plurality of solar power plants that covers power demand in a predetermined area, wherein the control unit A storage step of storing in the storage unit a predicted power generation amount that is a predicted value of the daily power generation amount of each of the plurality of solar power plants, and a predicted demand amount that is a predicted value of the daily power demand in a predetermined region; When the control unit determines that there is a solar power plant that has received a request for output restriction that restricts power supply during a specified time period, preparation time for preparing for the output restriction before the output restriction The setting step for setting the band and the control unit sends the predicted demand to each solar power station according to the ratio of the predicted power generation of each solar power station in the time zone other than the preparation time zone and the output limit time zone. First allocation to allocate And the control unit increases the ratio of the predicted demand amount allocated to the restricted solar power plant and allocates it to the non-restricted solar power plant during the preparation time period. The second allocation step that corrects the ratio of the demand amount to reduce and allocates the predicted demand amount to each solar power station according to the corrected ratio, and the control unit The third allocation step of correcting the ratio value so as to increase the proportion of the predicted demand allocated to unrestricted solar power plants and allocating the predicted demand to each solar power plant according to the corrected ratio The control unit compares the predicted demand allocated to each solar power plant with the actual power generation amount of each solar power plant, and controls the power supply amount for each solar power plant according to the comparison result. And a control step.

  The power supply control method according to the next invention is a power supply control method by a power supply control device that controls the power supply amount of a plurality of solar power plants that covers power demand in a predetermined area, wherein the control unit , A predicted power generation amount that is a predicted value of the daily power generation amount of each of the plurality of solar power plants, a predicted demand amount that is a predicted value of the daily power demand in a predetermined region, and a day of each solar power plant A storage step of storing a predicted charge amount, which is a predicted value of the charge amount, in the storage unit, and a solar power plant that has received a request for an output restriction that the control unit restricts power supply in a specified time zone If it is determined, the setting step of setting a preparation time zone for preparing for the output restriction before the output restriction, and the control unit in each time zone other than the preparation time zone and the output restriction time zone, Power generation forecast and forecast The first allocation step of allocating the predicted demand amount to each solar power plant according to the ratio of the total electric energy and the control unit limits the value of the total electric energy ratio in the preparation time zone Correct the forecasted demand amount to be allocated to the target solar power plant by increasing the proportion of the predicted demand amount and reduce the proportion of the predicted demand amount to be allocated to the non-restricted solar power plant. The second allocation step to be allocated to the solar power plant and the control unit increase the ratio of the predicted demand amount to be allocated to the solar power plant not subject to the restriction in the output limit time period. And a third allocation step for allocating the predicted demand to each solar power station according to the corrected ratio, and the control unit allocates the predicted demand to each solar power station and each solar power. Compare the actual power generation of the power plant and compare Characterized in that it comprises a control step for controlling the power supply, the solar power plant units in accordance with.

  A power supply control program according to the next invention is a power supply control program that is executed by a computer that operates as a power supply control device that controls the power supply amount of a plurality of solar power plants that covers power demand in a predetermined region. The control unit stores a predicted power generation amount that is a predicted value of the daily power generation amount of each of the plurality of solar power plants, and a predicted demand amount that is a predicted value of the daily power demand in a predetermined region. Storage step to be stored in the unit, and when the control unit determines that there is a solar power plant that has received a request for output restriction that restricts power supply in a specified time period, In accordance with the ratio of the predicted power generation amount of each solar power plant in the time zone other than the preparation time zone and the output restriction time zone, the setting step for setting the preparation time zone for performing the preparation The first allocation step of allocating surveyed demand to each solar power plant and the ratio of predicted demand that the control unit allocates the ratio of predicted power generation to the solar power plant to be restricted in the preparation time zone And a second allocation step of allocating the predicted demand to each solar power station according to the ratio after the correction, and correcting the ratio of the predicted demand to be allocated to the solar power plants not subject to restriction, The control unit corrects the value of the ratio of predicted power generation in the output restriction time zone so as to increase the ratio of the predicted demand to be allocated to solar power plants that are not subject to restriction, and the predicted demand according to the ratio after the correction. The third allocation step of allocating the amount to each solar power plant, and if the control unit determines that there is no solar power plant that has received a request for output restriction, The estimated demand is allocated to each solar power plant according to the ratio. And the control unit controls the power supply according to the allocated predicted demand amount to the solar power plant that is not subject to the restriction, and the actual power generation amount is the predicted demand amount. If the control unit exceeds the first control step, the control unit performs control for performing charging when the actual power generation amount is lower than the predicted demand amount, and performing control for discharging when the actual power generation amount is lower than the predicted demand amount. For the target solar power plant, with regard to the output limit time zone, control for limiting power supply and control for charging the generated power exceeding the limit are performed as exception processing, except for the output time limit zone The second control step in which normal processing is performed for the time period is performed by the computer.

  A power supply control program according to the next invention is a power supply control program that is executed by a computer that operates as a power supply control device that controls the power supply amount of a plurality of solar power plants that covers power demand in a predetermined region. The control unit is configured to predict a predicted power generation amount that is a predicted value of the daily power generation amount of each of the plurality of solar power plants, a predicted demand amount that is a predicted value of the daily power demand in a predetermined region, and The storage step for storing the estimated charge amount, which is the predicted value of the daily charge amount of the solar power plant, in the storage unit, and the control unit have received a request for output restriction to limit the power supply in the specified time zone When it is determined that a solar power plant exists, a setting step for setting a preparation time zone for preparing for the output restriction before the output restriction, and a control unit other than the preparation time zone and the output restriction time zone In the interband, a first allocating step for allocating the predicted demand amount to each solar power plant according to the ratio of the total power amount of the predicted power generation amount and the predicted charge amount of each solar power plant, and the control unit, In the preparation time zone, increase the ratio of the predicted demand allocated to the solar power plants subject to restriction, and reduce the ratio of the predicted demand allocated to the solar power plants not subject to restriction, in the ratio of the total electric energy The second allocation step of allocating the predicted demand amount to each photovoltaic power plant according to the corrected ratio, and the control unit limits the value of the total power amount ratio in the output time limit The third allocation step for allocating the predicted demand amount to each solar power plant according to the ratio after the correction, and the control unit There is a solar power plant that has received a request for output restriction. A fourth allocation step for allocating the predicted demand amount to each solar power plant according to the ratio of the total power amount of the predicted power generation amount and the predicted charge amount of each solar power plant, However, in order to supply power to non-restricted photovoltaic power plants according to the allocated predicted demand, and to charge when the actual power generation exceeds the predicted demand. A first control step for performing control and control for performing discharge when the actual power generation amount falls below the predicted demand amount as a normal process, and the control unit outputs to the photovoltaic power plant to be restricted For the time limit, the control for limiting the power supply and the control for charging the generated power exceeding the limit are performed as exception processing, and the normal processing is performed for the time zone other than the output time limit. 2 control steps and Are executed by a computer.

  According to the present invention, when the power demand of a specific region is covered by the power generation of a plurality of solar power plants, the power supply amount of each power plant can be controlled to make up for the shortage of power demand in that region. There is an effect that it becomes possible.

FIG. 1 is a diagram illustrating a hardware configuration example of a computer that operates as a power supply control device. FIG. 2 is a diagram illustrating an example of a functional block configuration of the power supply control device. FIG. 3 is a flowchart illustrating an example of the power demand allocation process in the region X according to the first embodiment. FIG. 4 is a diagram showing the predicted power generation amount per day of the solar power plant. FIG. 5 is a diagram illustrating an example of the daily predicted demand amount in the region X. FIG. 6 is a diagram illustrating a specific example of allocation of predicted demand. FIG. 7 is a diagram illustrating a specific example of allocation of predicted demand. FIG. 8 is a diagram illustrating an example of the predicted demand amount for each power plant stored in the storage unit. FIG. 9 is a diagram illustrating an example of the predicted demand amount for each power plant stored in the storage unit. FIG. 10 is a flowchart illustrating an example of power supply control for a plurality of power plants. FIG. 11 is a diagram illustrating an example when the power supply control according to the first embodiment is performed on the A power plant. FIG. 12 is a flowchart illustrating an example of the power demand allocation process in the region X according to the second embodiment.

  Hereinafter, embodiments of a power supply control device according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

  FIG. 1 is a diagram illustrating a hardware configuration example of a computer that operates as a power supply control device according to the present embodiment. In FIG. 1, a computer according to the present embodiment includes a control unit 1 including a CPU (Central Processing Unit) and an FPGA (Field Programmable Gate Array), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. A storage unit 2 including various memories, an input unit 3 including a user interface such as a keyboard 8 and a mouse 9, an output unit 4 that performs output processing such as printing, a display unit 5 that is a display, and a predetermined network And a communication unit 6 that communicates with the outside. In FIG. 1, the input unit 3 including the user interface such as the keyboard 8 and the mouse 9 is provided. However, the computer of the present embodiment is not limited to this, and the display unit 5 is provided with a touch panel function. The input unit 3 may not be provided, or the input unit 3 may be used in combination.

  In FIG. 1, the control unit 1 executes the power supply control program of this embodiment. The storage unit 2 includes an internal memory such as a ROM and a RAM, and stores the power supply control program and various input information of this embodiment, data obtained in the course of processing, and the like. The control unit 1 executes the power supply control of the present embodiment by reading the program stored in the storage unit 2. The storage unit 2 is not limited to the internal memory, and may be an external storage medium such as a DVD (Digital Versatile Disc) or an SD memory, or may be an internal memory or an external storage medium (DVD or SD). (Memory etc.).

  FIG. 2 is a diagram illustrating an example of a functional block configuration of the power supply control device according to the present embodiment. Specifically, the control unit 1 reads the power supply control program from the storage unit 2 and executes it. The functional block is shown. In FIG. 2, the control unit 1 includes a transmission / reception control unit 11, a restriction presence / absence determination unit 12, a demand amount allocation control unit 13, a time management unit 14, and a power adjustment as functional blocks for executing the power supply control of the present embodiment. And a control unit 15. The hardware configuration and functional block configuration of the power supply control device of the present embodiment are listed for the sake of convenience of description, and the configuration related to the processing of the present embodiment is enumerated and represents all the functions of the power supply control device. It was n’t.

  Further, the power supply control program of the present embodiment can be distributed via the communication unit 6 and a network such as the Internet. The program may be recorded on a computer-readable recording medium such as a hard disk, a flexible disk (FD), a CD-ROM, an MO, or a DVD. In this case, the program is read from the recording medium by the computer. Is executed by.

  Next, the processing according to the power supply control of this embodiment will be described in detail using a flowchart. In this embodiment, the power supply control apparatus shown in FIGS. 1 and 2 controls a plurality of power plants that cover the power demand in a specific region, so that the plurality of power plants cooperate to adjust the power supply amount. To do. Here, as an example, a case is assumed in which three photovoltaic power plants (hereinafter referred to as A power plant, B power plant, and C power plant) cover the power demand in region X.

  First, a description will be given of the power demand allocation processing in the region X by the power supply control device of this embodiment. FIG. 3 is a flowchart illustrating an example of the power demand allocation process in the region X according to the first embodiment.

In the control unit 1, the transmission / reception control unit 11 predicts the daily power generation amount of each of the A power plant, the B power plant, and the C power plant that covers the power demand in the region X (hereinafter, the predicted power generation amount (APest, BPest, CPest)) is received as first input information and stored in the storage unit 2 (step S1). The predicted power generation amount of each power plant is a value that has been calculated in advance by a computer of the power company having jurisdiction over region X based on various parameters such as weather forecasts and past power generation result data. The amount is recorded in the storage unit 2 as a predicted power generation amount every predetermined time, for example, every hour (hereinafter, hourly predicted power generation amount (APest _t , BPest _t , CPest _t ), t = t _{1 to} t _n ). The In addition, about the calculation method of prediction electric power generation amount, it is not limited to the calculation method using the said parameter, What was calculated based on what kind of parameter may be sufficient. FIG. 4 is a diagram showing the estimated daily power generation amount of the solar power plant, where (1) is the A power plant, (2) is the B power plant, and (3) is the C power plant. It is a figure which shows the prediction electric power generation amount, a vertical axis | shaft represents electric energy and a horizontal axis represents time. In this embodiment, the power generation time zone (sunrise to sunset) at each power plant is, for example, 12 hours (t = t _{1 to} t _n , n = 13) from 6:00 AM.

Further, the transmission / reception control unit 11 receives a predicted value of the daily power demand in the region X (hereinafter, predicted demand amount (Dest)) as second input information and stores it in the storage unit 2 (step S2). The predicted demand amount is based on various parameters for predicting the power demand, such as weather forecast, past power demand in the region, seasonal information, regional information, population, etc. The predicted demand amount is recorded in the storage unit 2 as a predicted demand amount (hourly predicted demand amount (Dest _t )) every predetermined time, for example, every hour. Note that the calculation method of the predicted demand is not limited to the calculation method using the above parameters, and may be calculated based on any parameter. FIG. 5 is a diagram illustrating an example of the predicted daily demand amount in the region X, where the vertical axis represents the amount of power and the horizontal axis represents time. In this embodiment, the curve represents the predicted demand for local X, the time t _1, t ₂ shown in thick line, ..., another predicted demand time in units of _{t 12} (Dest t) is recorded in the storage unit 2 .

  Further, the transmission / reception control unit 11 receives the output restriction information of each power plant as the third input information and stores it in the storage unit 2 (step S3). The third input information includes information such as the presence / absence of output restriction on the current day, the output restriction time zone, and the amount of power that can be supplied at the power plant at the time of restriction. The output restriction here defines a time zone in which the output is restricted in advance, and in that time zone the power supply generated is set to 0, or the power supply is greatly reduced, etc. Remote control of the amount of power that can be supplied to a station. At this time, it is assumed that the power plant that is requested to limit the output is limited in output, and generates power as usual.

  In addition, about the process which receives the 1st-3rd input information in said step S1-S3, the transmission / reception control part 11 is good also as receiving the information which a computer of an electric power company transmits, for example, autonomously. Information may be read out by accessing a power company server. Further, the processing order of steps S1 to S3 is not limited to this, and can be changed as appropriate.

  Next, the restriction presence / absence determination unit 12 reads the output restriction information from the storage unit 2 and checks whether there is a power plant that has received a request for output restriction (step S4). In the following, as an example, the first case where there is a request for output restriction to zero power supply to the A power station, and there is no request for output restriction at the B power station and the C power station, The power demand allocation process in region X in the second case where the power plant is not requested to limit output will be described.

For example, in the second case, when it is determined by the restriction presence / absence determination unit 12 that there is no output restriction request for all the power plants (step S4, No), the demand amount allocation control unit 13 first stores the storage unit 2 Then, the predicted demand amount in region X and the predicted power generation amount of each power plant are read out (step S5). Then, the predicted demand amount of the region X is allocated to each power plant according to the ratio of the predicted power generation amount of each power plant so that the power demand of the region X can be satisfied (step S6). FIG. 6 is a diagram illustrating a specific example of the allocation of the predicted demand amount in the second case. As shown in the figure, in the present embodiment, the demand amount allocation control unit 13 performs the hourly allocation for each power plant based on the ratio of the hourly predicted power generation amount of each power plant (APest _t : BPest _t : CPest _t ). Allocate the predicted demand (Dest _t ). For example, when the ratio of the hourly predicted power generation amount for the first hour (t = t ₁ ) is “APest _t1 : BPest _t1 : CPest _t1 = 3: 2: 1”, the demand amount allocation control unit 13 3/6 of hourly forecast demand (Dest _t1 ) is allocated to A power station (= Dest _t1 / 2), 2/6 is allocated to B power station (= Dest _t1 / 3), 1/6 Is assigned to the C power plant (= Dest _t1 / 6). Such allocation is repeated for the next hour (t = t ₂ ), the next hour (t = t ₃ ),..., And the last hour (t = t ₁₂ ). The allocation of hourly predicted demand as described above can be generalized by the following formula.

Hourly forecast demand allocated to A power plant (ADest _t ) =
Dest _t × {APest _t / (APest _t + BPest _t + CPest _t )} (1)
Predicted hourly demand (BDest _t ) allocated to B power station =
Dest _t × {BPest _t / (APest _t + BPest _t + CPest _t )} (2)
Hourly forecast demand (CDest _t ) allocated to C power plant =
Dest _t × {CPest _t / (APest _t + BPest _t + CPest _t )} (3)

On the other hand, if it is determined by the restriction presence / absence determination unit 12 that there is a request for output restriction at one or more power plants (Yes in step S4), the demand amount allocation control unit 13 may satisfy the power demand in the region X. The predicted demand amount is allocated to each power plant so as to be able to do this, but here the predicted demand amount is allocated by a method different from the second case in consideration of the output restriction requested for the A power plant. Specifically, the demand amount allocation control unit 13 provides a preparation time zone before the output restriction as a predetermined time zone for preparing for the output restriction, and allocates the hourly predicted demand amount to each power plant. The operation is divided into “preparation time zone and output restriction time zone” and “other time zone” (step S7). That is, for the “preparation time zone and output limit time zone” (step S7, Yes), the hourly predicted demand (Dest _t ) is allocated by a method different from the second case (step S8). For the “other time zone” (No in step S7), the hourly predicted demand (Dest _t ) is allocated in the same manner as in the second case (step S6).

Here, as an example, the first assumed case, the 2-hour output restriction time zone from the time _{15 (t 10, t 11)} , 3 hours of preparation time zone from the time 12 (t ₇ ~t _In the following, processing different from the second case will be described. FIG. 7 is a diagram illustrating a specific example of the allocation of the predicted demand amount in the first case. When allocating the hourly predicted demand (Dest _t ) for the “preparation time zone and output limit time zone” (step S7, Yes), first, the demand amount allocation control unit 13 from the storage unit 2 in the region X The predicted demand amount and the predicted power generation amount of each power plant are read out (step S5).

Then, for example, for 3 hours from 12:00 (t ₇ ) which is the preparation time zone, the demand amount allocation control unit 13 increases the proportion of hourly predicted demand allocated to the A power plant to the B and C power plants. In order to reduce the proportion of hourly forecasted demand to be allocated, the ratio of hourly forecasted power generation at each power plant is corrected at each time (t ₇ , t ₈ , t ₉ ). The hourly predicted demand is allocated to each power plant (step S8).

In the process of step S8, when the ratio of the hourly predicted power generation amount at 12 o'clock (t ₇ ) 3 hours before the output limit is “APest _t7 : BPest _t7 : CPest _t7 = 4: 5: 5”, the demand amount allocation control For example, “APcorrect _t7 : BPcorrect _t7 ” may be used to increase the ratio of the hourly predicted demand allocated to the A power plant and decrease the ratio of the hourly predicted demand allocated to the B and C power plants. : CPcorrect _t7 = 6: 4: 4 ".

According to this corrected ratio, the demand amount allocation control unit 13 allocates 6/14 of hourly predicted demand Dest _t7 at 12:00 (t ₇ ) to the A power plant, and 4/14 to the B power plant, Allocate 4/14 to the C power plant (see Figure 7). Such allocation is repeatedly executed for two hours before the output limit (t = t ₈ ) and one hour before the output limit (t = t ₉ ). The ratio after the correction is not limited to this. For example, the ratio may be obtained by multiplying the value of the ratio of BPest _t7 and CPest _t7 by a fixed correction coefficient. It may be determined as appropriate according to the magnitude of the demand amount (Dest _t10 , Dest _t11 ), the predicted power generation amount of the power plants (B, C power plants) that do not require output restrictions, and the like.

On the other hand, for the two hours (t ₁₀ , t ₁₁ ) from 15:00 in the output restriction time zone, the demand amount allocation control unit 13 sets the ratio of the hourly predicted demand amount to be allocated to the A power plant to 0, and B, C power generation The power generation ratio of each power plant is corrected at each time (t ₁₀ , t ₁₁ ) so that the power demand of region X can be covered only by the power plant, and each power plant is corrected with the corrected ratio at each time. The hourly predicted demand amount is allocated to (step S8). In the present embodiment, as an example, the hourly predicted demand amount of the region X is allocated to these two power plants according to the ratio of the hourly predicted power generation amount of the B power plant and the C power plant. For example, when the ratio of hourly predicted power generation at 15:00 (t ₁₀ ) is “APest _t10 : BPest _t10 : CPest _t10 = 4: 5: 5”, the demand amount allocation control unit 13 sets the corrected ratio to “ APcorrect _t10 : BPcorrect _t10 : CPcorrect _t10 = 0: 7: 7 ”is set.

The demand amount allocation control unit 13 allocates the hourly predicted demand amount Dest _t10 at 15:00 (t ₁₀ ) to the B power station and the C power station in accordance with this corrected ratio (see FIG. 7). Such allocation is also executed at 16:00 (t ₁₁ ) in the output limit time zone.

After executing the allocation of the hourly predicted demand in step S6 or step S8, the demand amount allocation control unit 13 generates the hourly predicted demand at all times (t _{1 to} t ₁₂ ) allocated to each power plant. Each location is recorded in the storage unit 2 (step S9). FIG. 8 is a diagram illustrating an example of the predicted demand amount for each power plant stored in the storage unit 2 in the second case, and FIG. 9 is a diagram for each power plant stored in the storage unit 2 in the first case. It is a figure which shows an example of the predicted demand amount.

In this embodiment, in the process of step S6, the hourly predicted demand (Dest _t ) is set for each power station according to the ratio of the hourly predicted power generation of each power station (APest _t : BPest _t : CPest _t ). )), But is not limited to this. For example, for each power plant, the ratio of the total power amount of each power plant (APest _t : the power amount obtained by summing the hourly predicted power generation amount at time t and the predicted charge amount at that time (predicted hourly charge amount). BPest _t : CPest _t ) may be used to allocate hourly predicted demand (Dest _t ) to each power plant. Similarly, in the process of step S8, the ratio (APest _t : BPest _t : CPest _t ) of the total power amount of each power plant is corrected, and the hourly predicted demand amount is allocated to each power plant with the corrected ratio. It is good as well. In the case of the embodiment to which these steps S6 and S8 are applied, the transmission / reception control unit 11 stores the daily hourly estimated charge amount of each power plant in the storage unit 2.

In addition, in the embodiment in which the power demand is allocated using the power amount (total power amount of each power plant) obtained by summing the hourly predicted power generation amount at time t and the predicted charge amount at that time for each power plant, for example, in response to local X of the power demand after sunset (t ₁₃ ~), it may perform the prediction demand allocation in accordance with the predicted amount of charge in each plant. In this case, the transmission / reception control unit 11 also stores the hourly predicted demand amount and the hourly predicted charge amount after sunset in the storage unit 2.

Next, the power supply control for each power plant will be specifically described on the premise of the power demand allocation process (steps S1 to S9) in the region X described above. FIG. 10 is a flowchart illustrating an example of power supply control for each power plant. In the present embodiment, as an example, there is a request for output restriction to the A power plant for 2 hours (t ₁₀ , t ₁₁ ) from 15:00, and the preparation time zone is 3 hours (t _{7 to} t ₉ ) from 12:00. The above first case is assumed. Note that, here, the first case is assumed as an example, but power supply control is performed in the same procedure in the second case. In the process of FIG. 10, it is assumed that the time management unit 14 constantly monitors the time.

In the control unit 1, when the time management unit 14 during time monitoring (step S11, No) detects AM 6 o'clock (t ₁ ), which is the power generation start time (sunrise time) (step S11, Yes), This is notified to the power adjustment control unit 15 (step S12). Next, the power adjustment control unit 15 that has received this notification reads out the output restriction presence / absence information of each power plant, which is the third input information, from the storage unit 2, and whether the current time (t ₁ ) is the output restriction time zone. Whether the time zone is other than that (including the preparation time zone) is checked (step S13).

Here, since the power generation start time t ₁ corresponds to the “other time zone” in the first case (step S13, No), the power adjustment control unit 15 is allocated to the power plant A in step S8. The predicted hourly demand (ADest ₁ ) at time t ₁ is read from the storage unit 2 (step S14). In addition, the power adjustment control unit 15 receives the hourly power generation amount (AP ₁ ) that is the actual power generation amount of the A power plant at time t ₁ as the fourth input information via the transmission / reception control unit 11 (step S15). ). This process is a power adjustment control unit 15, another power generation time of the A power plant (AP _1), for example, it may be used as the receiving the fourth input information from the power company and A power plant, autonomous It is good also as accessing to the server of an electric power company or A power station, and reading as 4th input information.

Then, the power adjustment control unit 15 compares the hourly predicted demand amount (ADest ₁ ) at time t _{1 with} the hourly power generation amount (AP ₁ ) (step S16), for example, “hourly power generation amount (AP _1). ) ≧ hourly predicted demand (ADest ₁ ) ”(step S16, Yes), the A power plant is instructed to supply power corresponding to the hourly predicted demand (ADest ₁ ), Further, when the hourly power generation amount (AP ₁ ) exceeds the hourly predicted demand amount (ADest ₁ ), a process for instructing the power plant A to store the excess in the storage battery is performed (step S17). On the other hand, in the case of “hourly power generation amount (AP ₁ ) <hourly predicted demand amount (ADest ₁ )” (step S16, No), the A power station is instructed to supply all generated power. At the same time, the A power plant is instructed to discharge the storage battery until the hourly predicted demand (ADest ₁ ) is reached (step S18).

Next, when the time management unit 14 that is continuing the time monitoring (No in step S19) detects the next AM7 o'clock (t ₂ ) (step S19, Yes), the power adjustment control unit 15 is notified (step S20). Then, the power adjustment control unit 15 that has received this notification, since the current time is not the sunset time (step S21, No), outputs the output restriction presence / absence information of each power plant as the third input information from the storage unit 2. Reading and confirming whether the current time (t ₂ ) is the output time limit or other time zone (step S13). Thereafter, in this embodiment, the processes of steps S13 to S21 are repeatedly executed until the output restriction start time is reached.

Then, continuing to monitor the time (step S19, No) time management section 14 at 15 (t ₁₀₎ is detected (steps S19, Yes), if you notify the power adjustment control unit 15 (step S20), the power adjustment control unit 15 that has received this notification reads out the output restriction presence / absence information of each power plant as the third input information from the storage unit 2, and whether the current time (t ₁₀ ) is the output restriction time zone or not. It is confirmed whether the time zone is other than that (step S21, No, step S13). In the first case, since the power limit is requested to the A power plant for 2 hours (t ₁₀ , t ₁₁ ) from 15:00 (step S13, Yes), the power adjustment control unit 15 is connected to the A power plant. On the other hand, a process for instructing to stop the power supply is performed (step S22). Furthermore, the power adjustment control unit 15 performs a process of instructing the A power plant to store the power generated in the output restriction time zone (step S22). In this embodiment, the first case is assumed, and the supply of generated power is set to 0 for the output restriction time zone. However, the present invention is not limited to this, and an output restriction for supplying power while suppressing power is applied. In this case, in step S22, the power adjustment control unit 15 performs a process for instructing the A power plant to limit the power supply and a process for instructing to store the generated power exceeding the limit. It will be.

  Thereafter, in the present embodiment, the processing of steps S13 to S22 is repeatedly executed until 18:00, which is the sunset time (power generation end time), and the sunset time is detected in the monitoring of the time management unit 14 (step S21). , Yes), the power adjustment control unit 15 ends the power supply control of this embodiment.

FIG. 11 is a diagram illustrating an example when the power supply control of the present embodiment is executed for the A power plant. In FIG. 11, the thick line represents the hourly predicted demand (ADest _t ) allocated to the A power plant, and the one-dot chain line and the two-dot chain line represent the hourly power generation (AP ₁ ) of the A power plant. By executing the power supply control of the present embodiment, as shown in FIG. 11, as shown in FIG. 11, power storage is performed for a portion (a portion indicated by a two-dot chain line) where the hourly power generation amount exceeds the hourly predicted demand amount (thick line) ( 10 (see steps S17 and S22 in FIG. 10), the portion where the hourly power generation amount falls below the hourly predicted demand amount (thick line) (the portion indicated by the one-dot chain line) is discharged (see step S18 in FIG. 10). Thereby, since the part for which the amount of power generation is insufficient is allocated to the stored electricity (see the arrow in the figure), it is possible to satisfy the predicted demand amount allocated to the A power plant.

  In the above description, as an example, the power supply control (steps S11 to S22) for the A power plant in the first case has been described. However, the power adjustment control unit 15 simultaneously performs the processing for the A power plant, The power supply control shown in FIG. 10 is also executed for the C power plant in the same procedure as described above. At this time, since no output restriction is requested for the B and C power plants, step S22 is not executed.

Further, in this embodiment, the preparation time period (time t ₇ ~ time t _9), the time t ₁ ~ time t _6, but the same processing as the time t ₁₂ (steps S17 and S18) is performed, Actually, the output limit of the A power plant is taken into consideration, and the predicted demand is allocated so that the proportion of the predicted demand allocated to the A power plant is increased and the proportion of the predicted demand allocated to the B and C power plants is decreased. (See step S8 in FIG. 3), it is possible to positively store the excess of the power generation by the B and C power plants with a small allocation in the preparation time zone. As a result, even in the case where the power demand of the region X cannot be satisfied only by the power generation amount of the B and C power plants in the output limit time zone of the A power plant, It can be compensated by discharging the electricity stored in the C power plant.

Further, in the present embodiment, as described above, in the allocation process of the power demand of the local X, corresponding to the region X of the power demand after sunset (t ₁₃ ~), corresponding to the predicted amount of charge in each plant It is also possible to allocate the predicted demand. In this case, the power adjustment control unit 15 instructs each power plant to discharge the storage battery even after sunset until the hourly predicted demand amount is reached.

  Further, in the present embodiment, the processing in units of one hour has been described as an example, but the present invention is not limited to this. For example, the processing may be performed at a constant time interval shorter than one hour or at a constant time interval longer than one hour. The processing interval may be variable according to the time (morning, noon, night, etc.).

  Moreover, although the present Example demonstrated the case where the power demand of the area X was covered with three photovoltaic power plants, it does not restrict to the number and kind of power plants, but two or less or four or more power plants. It is good also as covering the electric power demand of area X, and it is good also as covering the electric power demand of area X in cooperation with power plants other than sunlight, such as thermal power, nuclear power, hydropower, wind power, and pumping.

  As described above, in this embodiment, the control unit 1 executes the power demand allocation process for the region X shown in FIG. 3 and the power supply control for each power plant shown in FIG. This makes it possible to control the power supply amount of each power plant in order to cover the shortage of power demand in that region when the power demand of a specific region is covered by the power generation of a plurality of solar power plants. .

  In Example 1, the power demand allocation process for the region X shown in FIG. 3 was completed before the power supply control for each power plant shown in FIG. 10, that is, before the start of power generation by the solar power plant. In the second embodiment, the power demand allocation process for the region X shown in FIG. 12 and the power supply control for each power plant shown in FIG. 10 are performed in parallel.

  The hardware configuration of the computer that operates as the power supply control device of the present embodiment and the functional block configuration of the power supply control device of the present embodiment are the same as those of the first embodiment described above.

Next, the processing according to the power supply control of this embodiment will be described in detail using a flowchart. FIG. 12 is a flowchart illustrating an example of the power demand allocation process in the region X according to the second embodiment. In the present embodiment, as in the first embodiment, as an example, a case is assumed in which three solar power plants (A power plant, B power plant, C power plant) cover the power demand in region X. Further, the power generation time period (sunrise to sunset) at each power plant is also set to 12 hours (t = t _{1 to} t _n , n = 13) from 6:00 AM as described above. In the present embodiment, for the sake of convenience of explanation, the processing of FIG. 12 will be described assuming the first case, but this is an example, and the flowchart of FIG. 12 is also shown for the second case and other cases. Can be processed similarly. Hereinafter, processing different from that of the first embodiment will be described.

In the control unit 1, the time management unit 14 during the time monitoring (step S31, No) detects AM5 (t ₀ ), which is one hour before the power generation start time (sunrise time) (step S31, Yes), this is notified to the restriction presence / absence determination unit 12 and the demand amount allocation control unit 13 (step S32).

Upon receiving this notification, the demand amount allocation control unit 13 provides the transmission / reception control unit 11 with the output restriction information of each power plant as the third input information (whether there is an output restriction on the day, the time limit of the output restriction, the supply at the time of restriction) Command to read out the available amount of power). The transmission / reception control unit 11 receives the output restriction information of each power plant as the third input information and stores it in the storage unit 2 (step S33). At this time, the restriction presence / absence determination unit 12 confirms the output restriction information, and there is a request for the output restriction to the power plant A, and the output restriction time zone is 2 hours from 15:00 (t ₁₀ , t ₁₁ ). To the demand amount allocation control unit 13. Upon receiving this notification, the demand amount allocation control unit 13 sets the preparation time zone for preparing for the output restriction to 3 hours from twelve o'clock (t _{7 to} t ₉ ), and performs the following control.

Control unit 13 demand allocator, compared reception control unit 11 instructs the reading of another prospective power generation amount time at time _{t 1 (APest t1, BPest t1} , CPest t1) as the first input information. Reception control unit 11 receives another prospective power generation amount time time t ₁ a _{(APest t1, BPest t1, CPest} t1) as the first input information in the storage unit 2 (step S34). Note that another prospective power generation amount time of the read time _{t 1 (APest t1, BPest t1} , CPest t1) is the latest predictions server's power company at the time point t _0.

The demand amount allocation control unit 13 instructs the transmission / reception control unit 11 to read out the hourly predicted demand amount (Dest _t1 ) at time t ₁ as the second input information. The transmission / reception control unit 11 receives the hourly predicted demand (Dest _t1 ) at time t ₁ as the second input information and stores it in the storage unit 2 (step S35). Incidentally, another predicted demand time of the read time t ₁ (Dest _t1) is the latest predictions server's power company at the time point t _0.

Here, the demand amount allocation control unit 13 confirms whether the time t _{1 corresponds} to the “preparation time zone and the output restriction time zone” or the “other time zone” (step S36). In the first case, since the time t ₁ corresponds to “other time zone” (No in step S36), the demand amount allocation control unit 13 determines from the storage unit 2 the hourly predicted power generation amount at the time t ₁ ( APest _t1, BPest _t1, and CPest _t1), another predicted demand time time t ₁ (Dest _t1) read out (step S37). As can meet the power demand time t ₁ of the area X, the ratio Hourly prospective power generation amount of each plant _{(APest t1: BPest t1: CPest} t1) depending on the time of the local X t ₁ allocate another predicted demand time of (Dest _t1) to each plant (step S38). For the allocation of the hourly predicted demand (Dest _t1 ), the above formulas (1) to (3) can be applied, as in the first embodiment.

After allocating the hourly predicted demand amount at time t ₁ in step S38, the demand amount allocation control unit 13 assigns the hourly predicted demand amount at time t ₁ (ADest _t1 , BDest _t1 , CDest _t1) allocated to each power plant. ) Is recorded in the storage unit 2 for each power plant (step S39).

On the other hand, when the time management unit 14 that is continuing the time monitoring (No in step S40) detects the next time AM6 o'clock (t ₁ ) (step S40, Yes), the demand allocation control is performed to that effect. The unit 13 is notified (step S41). The demand allocation control unit 13 having received the notification, because the current time is not the 1 hour before the sunset time (t ₁₂₎ (step S42, No), proceeds again to the processing in Step S34, thereafter, At time t ₁ , allocation of hourly predicted demand (Dest _t2 ) at time t ₂ to each power plant is started. Thereafter, in the first case, the time monitoring is continued until the allocation of the hourly predicted demand (Dest _t2 ) at the start time 12 (t ₇ ) of the preparation time period starts, that is, in the process of step S40. Until the time t ₆ is detected by the middle time management unit 14, the processes of steps S 34 to S 42 are repeatedly executed at the times t _{2 to} t ₅ .

After that, the time management unit 14 that is continuing to monitor the time (No in step S40) detects 11:00 (t ₆ ) that is one hour before the start time of the preparation time zone (step S40, Yes). Is notified to the demand amount allocation control unit 13 (step S41), the demand amount allocation control unit 13 that has received this notification is not one hour before the sunset time (t ₁₂ ) (step S42, No), the transmission / reception control unit 11 is instructed to read out the hourly predicted power generation amount (APest _t7 , BPest _t7 , CPest _t7 ) at time t ₇ . Reception control unit 11 stores another prospective power generation amount time time t _7, which has received the _{(APest t7, BPest t7, CPest} t7) in the storage unit 2 (step S34). Further, the demand amount allocation control unit 13 instructs the transmission / reception control unit 11 to read out the hourly predicted demand amount (Dest _t7 ) at time t ₇ . The transmission / reception control unit 11 stores the received hourly predicted demand (Dest _t7 ) at time t _{7 in} the storage unit 2 (step S35).

Here, the demand amount allocation control unit 13 confirms whether the time t _{7 corresponds} to the “preparation time zone and the output restriction time zone” or the “other time zone” (step S 36). In the first case, since the time t ₇ is equivalent to the "preparation time zone" (step S36, Yes), the control unit 13 demand allocator from the storage unit 2, further prospective power generation amount time time t ₇ (APest _t7, BPest _t7 , CPest _t7 ) and hourly predicted demand (Dest _t7 ) at time t ₇ are read (step S 37). Then, the demand amount allocation control unit 13 increases the ratio of the hourly predicted demand amount allocated to the A power plant in the preparation time zone so as to decrease the ratio of the hourly predicted demand amount allocated to the B and C power plants. the ratio Hourly prospective power generation amount of time t ₇ of the plant to correct, the ratio of the corrected allocates another predicted demand time time t ₇ for each plant (step S43).

For example, in the process of step S43, when the ratio of the hourly predicted power generation amount at 12 o'clock (t ₇ ) 3 hours before the output limit is “APest _t7 : BPest _t7 : CPest _t7 = 4: 5: 5”, the demand amount As in the first embodiment, the allocation control unit 13 increases the ratio of the hourly predicted demand allocated to the A power plant to reduce the ratio of the hourly predicted demand allocated to the B and C power plants. For example, “APcorrect _t7 : BPcorrect _t7 : CPcorrect _t7 = 6: 4: 4” is set.

According to this corrected ratio, the demand amount allocation control unit 13 allocates 6/14 of hourly predicted demand Dest _t7 at 12:00 (t ₇ ) to the A power plant, and 4/14 to the B power plant, Allocate 4/14 to the C power plant (see Figure 7).

After executing the allocation Hourly forecast demand for time t ₇ in the step S43, the control unit 13 demand allocator is further predicted demand time time t ₇ to allocated to each power station (ADest _t7, BDest _t7, CDest _t7 ) is recorded in the storage unit 2 for each power plant (step S39).

On the other hand, when the time management unit 14 that is continuing the time monitoring (No in step S40) detects the next time of 12:00 (t ₇ ) (step S40, Yes), the demand amount allocation control indicates that fact. The unit 13 is notified (step S41). The demand allocation control unit 13 having received the notification, because the current time is not the 1 hour before the sunset time (t ₁₂₎ (step S42, No), proceeds again to the processing in Step S34, the time t in ₇ time point, it starts to allocate to each plant another predicted demand time time t ₈ (Dest _t8). Then, in the first case, to the allocation of different prediction demand time time t ₁₀ is output restriction time period (Dest _t10) is started, i.e., in the processing of step S40, the ongoing time monitoring until time t ₉ to the time management unit 14 is detected, the process of step S34~S43 are repeated in the preparation times.

Thereafter, the time management unit 14 that is continuing to monitor the time (No in step S40) detects 14:00 (t ₉ ) one hour before the output limit (step S40, Yes), and notifies the demand allocation control unit when notified to 13 (step S41, step S42, No), the demand allocation control unit 13 having received the notification, in the same procedure as above, another prospective power generation amount time time t ₁₀ (APest _t10, BPest _t10 , CPest _t10), and another predicted demand time time t ₁₀ control for obtaining (Dest _t10) (step S34, S35).

In the first case, since time t ₁₀ corresponds to the “output limit time zone” (step S 36, Yes), the demand amount allocation control unit 13 reads the hourly predicted power generation amount (APest t ₁₀₎ from the storage unit 2 _. , BPest _t10 , CPest _t10 ) and the hourly predicted demand (Dest _t10 ) at time t ₁₀ are read (step S 37). And the demand amount allocation control part 13 sets the ratio of the hourly predicted demand amount allocated to the A power plant for the output restriction time zone to 0, and covers the power demand of the region X only by the B and C power plants. the ratio of the hourly prospective power generation amount of time t ₁₀ of each power station is corrected, the ratio of the corrected allocates another predicted demand time time t ₁₀ to the power plant (step S43).

For example, in the processing of step S43, when the ratio of hourly predicted power generation at 15:00 (t ₁₀ ) is “APest _t10 : BPest _t10 : CPest _t10 = 4: 5: 5”, the demand amount allocation control unit 13 As in the first embodiment, the corrected ratio is set as “APcorrect _t10 : BPcorrect _t10 : CPcorrect _t10 = 0: 7: 7”.

The demand amount allocation control unit 13 allocates the hourly predicted demand amount Dest _t10 at 15:00 (t ₁₀ ) to the B power station and the C power station in accordance with this corrected ratio (see FIG. 7).

Since, in this embodiment, at 17 1 hour prior to sunset time process of step S34~S43 to (t ₁₂₎ is detected are repeated, 17 o'clock in the monitoring of the time management section 14 (t ₁₂ ) is detected (Yes in step S42), the demand amount allocation control unit 13 ends the allocation of the hourly predicted demand amount to each power plant.

  In the second embodiment, the power supply control for each power plant is the same as in FIG. 10 of the first embodiment described above.

  As described above, in the present embodiment, the control unit 1 executes the power demand allocation process in the region X shown in FIG. 12 and the power supply control for each power plant shown in FIG. This makes it possible to control the power supply amount of each power plant in order to cover the shortage of power demand in that region when the power demand of a specific region is covered by the power generation of a plurality of solar power plants. .

  Further, in this embodiment, the power demand allocation process in the region X shown in FIG. 12 and the power supply control for each power plant shown in FIG. 10 are performed in parallel. That is, each power generation allocated based on the predicted value (the hourly predicted power generation amount and the hourly predicted demand amount) at the time immediately before the current time is processed in the power supply control for each power plant shown in FIG. It was decided to carry out using the hourly forecasted demand. As a result, the power demand allocation process with higher accuracy than that of the first embodiment can be performed, and the difference between the actual power generation amount of the solar power plant and the power demand allocated to the power plant can be reduced. That is, in this embodiment, the control range of the power supply amount to each power plant can be reduced. In addition, if the accuracy of the power demand allocation process is improved and the difference between the actual power generation amount of the photovoltaic power plant and the power demand allocated to the power plant can be reduced, the storage battery provided in the power plant can be made smaller. And it becomes possible to make it cheap.

  In the first and second embodiments, the power demand allocation process (FIGS. 3 and 12) in the region X and the power supply control (FIG. 10) for each power plant are executed. , Without using the allocation process of FIG. 3 or FIG. 12, a fixed demand amount is allocated to each power plant in advance, and the power demand in region X is satisfied by charge / discharge control (FIG. 10) for each power plant. Alternatively, the control unit 1 may be operated.

DESCRIPTION OF SYMBOLS 1 Control part 2 Memory | storage part 3 Input part 4 Output part 5 Display part 6 Communication part 8 Keyboard 9 Mouse 11 Transmission / reception control part 12 Restriction presence / absence judgment part 13 Demand amount allocation control part 14 Time management part 15 Power adjustment control part

Claims (14)

A power supply control device that controls the power supply amount of a plurality of photovoltaic power plants that covers power demand in a predetermined area,
Storage means for storing a predicted power generation amount that is a predicted value of a daily power generation amount of each of the plurality of solar power plants, and a predicted demand amount that is a predicted value of a daily power demand in the predetermined region;
A first process of allocating the predicted demand to each solar power plant based on the predicted power generation of each solar power plant, and the predicted demand allocated to each solar power plant and each solar power plant Control means for performing a second process of controlling the power supply amount for each photovoltaic power plant according to the comparison result with the actual power generation amount;
With
In the first process, the control means includes:
When it is determined that there is a solar power plant that has received a request for output restriction that restricts power supply during the specified time period, a preparation time period for preparing for the output restriction is set before the output restriction,
For time zones other than the preparation time zone and the output restriction time zone, the predicted demand amount is allocated to each solar power plant according to the ratio of the predicted power generation amount of each solar power plant,
For the preparation period, increase the ratio of the predicted demand allocated to the solar power plants subject to restriction to the ratio of the predicted power generation ratio, and decrease the proportion of the predicted demand allocated to solar power plants not subject to restriction And allocate the predicted demand to each solar power station according to the ratio after correction,
For the output time limit period, the ratio value of the predicted power generation amount is corrected so as to increase the ratio of the predicted demand amount allocated to the solar power plants that are not restricted, and the predicted demand amount according to the corrected ratio. To each solar power plant,
The power supply control apparatus characterized by the above-mentioned. In the first process, the control means includes:
When it is determined that there is no solar power plant that has received a request for output restriction, the predicted demand amount is allocated to each solar power plant according to the ratio of the predicted power generation amount of each solar power plant,
The power supply control device according to claim 1. A power supply control device that controls the power supply amount of a plurality of photovoltaic power plants that covers power demand in a predetermined area,
A predicted power generation amount that is a predicted value of a daily power generation amount of each of the plurality of solar power plants, a predicted demand amount that is a predicted value of a daily power demand in the predetermined region, and one solar power plant Storage means for storing a predicted charge amount that is a predicted value of the charge amount of the day;
A first process of allocating the predicted demand to each solar power plant based on the predicted power generation amount and predicted charge amount of each solar power plant, and the predicted demand amount allocated to each solar power plant and each solar power Control means for performing a second process of controlling the amount of power supplied to each photovoltaic power plant according to the comparison result with the actual power generation amount of the photovoltaic power plant,
With
In the first process, the control means includes:
When it is determined that there is a solar power plant that has received a request for output restriction that restricts power supply during the specified time period, a preparation time period for preparing for the output restriction is set before the output restriction,
For time zones other than the preparation time zone and the output restriction time zone, the predicted demand amount is assigned to each solar power plant according to the ratio of the total power amount of the predicted power generation amount and the predicted charge amount of each solar power plant. Allocation,
For the preparation time zone, increase the ratio of the predicted demand allocated to the solar power plants subject to restriction to the ratio value of the total electric energy, and the ratio of the predicted demand allocated to the solar power plants not subject to restriction. Correct to reduce, allocate the predicted demand to each solar power plant according to the corrected ratio,
For the output time limit, the ratio value of the total power amount is corrected so as to increase the ratio of the predicted demand amount to be allocated to the solar power plants that are not restricted, and the predicted demand according to the corrected ratio. Allocate the amount to each solar power plant,
The power supply control apparatus characterized by the above-mentioned. In the first process, the control means includes:
When it is determined that there is no solar power plant that has received a request for output restriction, the predicted demand amount is set according to the ratio of the total power amount of the predicted power generation amount and the predicted charge amount of each solar power plant. Allocate to solar power plant,
The power supply control device according to claim 3. In the second process, the control means
Control for supplying power according to the allocated predicted demand to a solar power plant that is not subject to restriction, and control for charging when the actual power generation exceeds the predicted demand, When the actual power generation amount falls below the predicted demand amount, control for discharging is performed as a normal process,
For the solar power plants to be restricted, the output restriction time zone is controlled for limiting power supply and the control for charging the generated power exceeding the restriction as an exception process. For other time zones, the normal processing is performed.
The power supply control device according to claim 1, wherein the power supply control device is a power supply control device. The predicted power generation amount and the predicted demand amount of each solar power plant are stored in advance in the storage means as predicted values for each predetermined time interval, respectively.
The control means includes
The first process is performed in units of predicted values at predetermined time intervals, and the first process is completed by the time when the solar power plant starts power generation.
The power supply control device according to claim 1, wherein the power supply control device is a power supply control device. Each time a predetermined time is detected as the predicted power generation amount and the predicted demand amount of each solar power plant, the latest predicted value at that time is stored in real time in the storage means,
The control means includes
As the first process, for each predetermined time, the latest predicted demand amount stored in the storage means is allocated to each solar power plant,
As the second process, for each predetermined time, the predicted demand amount of each solar power plant allocated at the immediately preceding time is compared with the actual power generation amount of each solar power plant at the current time, and the comparison Control the amount of power supplied to each photovoltaic power station according to the results,
Performing the first process and the second process in parallel;
The power supply control device according to claim 1, wherein the power supply control device is a power supply control device. A power supply control method by a power supply control device that controls the power supply amount of a plurality of photovoltaic power plants that covers power demand in a predetermined area,
The control unit stores in the storage unit a predicted power generation amount that is a predicted value of a daily power generation amount of each of the plurality of solar power plants, and a predicted demand amount that is a predicted value of a daily power demand in the predetermined region. A storing step for storing;
When the control unit determines that there is a solar power plant that has received a request for output restriction that restricts power supply during a specified time period, a preparation time period for preparing for the output restriction before the output restriction A setting step to set
A first allocating step of allocating the predicted demand amount to each solar power plant according to a ratio of the predicted power generation amount of each solar power plant in a time zone other than the preparation time zone and the output limit time zone; ,
The control unit increases the ratio of the predicted demand amount allocated to the solar power plant subject to restriction in the preparation time zone, and increases the ratio of the predicted demand amount allocated to the solar power plant not subject to restriction. A second allocating step of correcting to reduce the ratio and allocating the predicted demand to each solar power plant according to the corrected ratio;
The control unit corrects the value of the ratio of the predicted power generation amount in the output restriction time zone so as to increase the ratio of the predicted demand amount to be allocated to the solar power plants that are not subject to restriction, and according to the ratio after the correction, A third allocation step for allocating the predicted demand to each solar power plant;
A control step in which the control unit compares the predicted demand allocated to each solar power plant with the actual power generation amount of each solar power plant, and controls the power supply amount for each solar power plant according to the comparison result When,
A power supply control method comprising: further,
When the control unit determines that there is no solar power plant that has received a request for output restriction, the predicted demand is allocated to each solar power plant according to the ratio of the predicted power generation of each solar power plant. The fourth allocation step,
The power supply control method according to claim 8, comprising: A power supply control method by a power supply control device that controls the power supply amount of a plurality of photovoltaic power plants that covers power demand in a predetermined area,
The control unit includes a predicted power generation amount that is a predicted value of a daily power generation amount of each of the plurality of solar power plants, a predicted demand amount that is a predicted value of a daily power demand in the predetermined region, and each solar light A storage step of storing a predicted charge amount, which is a predicted value of the daily charge amount of the power plant, in a storage unit;
When the control unit determines that there is a solar power plant that has received a request for output restriction that restricts power supply during a specified time period, a preparation time period for preparing for the output restriction before the output restriction A setting step to set
In the time zone other than the preparation time zone and the output limit time zone, the control unit sets the predicted demand amount for each solar power according to the ratio of the total power amount and the predicted power amount of each solar power plant. A first allocation step to allocate to the power plant;
In the preparation time zone, the control unit increases the ratio of the predicted demand amount to be allocated to the restricted photovoltaic power plants, and the predicted demand amount to be allocated to unrestricted photovoltaic power plants. A second allocating step of allocating the predicted demand to each photovoltaic power plant according to the corrected ratio,
The control unit corrects the value of the total power amount ratio so as to increase the ratio of the predicted demand amount to be allocated to the solar power plants that are not restricted in the output restriction time zone, and according to the ratio after the correction. A third allocating step of allocating the predicted demand to each solar power plant;
A control step in which the control unit compares the predicted demand allocated to each solar power plant with the actual power generation amount of each solar power plant, and controls the power supply amount for each solar power plant according to the comparison result When,
A power supply control method comprising: further,
When the control unit determines that there is no solar power plant that has received the request for output restriction, the prediction is performed according to the ratio of the total power amount of the predicted power generation amount and the predicted charge amount of each solar power plant. A fourth allocation step of allocating demand to each photovoltaic power plant,
The power supply control method according to claim 10, comprising: In the control step, the control unit
Control for supplying power according to the allocated predicted demand to a solar power plant that is not subject to restriction, and control for charging when the actual power generation exceeds the predicted demand, When the actual power generation amount falls below the predicted demand amount, control for discharging is performed as a normal process,
For the solar power plants to be restricted, the output restriction time zone is controlled for limiting power supply and the control for charging the generated power exceeding the restriction as an exception process. For other time zones, the normal processing is performed.
The power supply control method according to any one of claims 8 to 11, wherein: A power supply control program that is executed by a computer that operates as a power supply control device that controls the power supply amount of a plurality of solar power plants that covers power demand in a predetermined area,
The control unit stores in the storage unit a predicted power generation amount that is a predicted value of a daily power generation amount of each of the plurality of solar power plants, and a predicted demand amount that is a predicted value of a daily power demand in the predetermined region. A storing step for storing;
When the control unit determines that there is a solar power plant that has received a request for output restriction that restricts power supply during a specified time period, a preparation time period for preparing for the output restriction before the output restriction A setting step to set
A first allocating step of allocating the predicted demand amount to each solar power plant according to a ratio of the predicted power generation amount of each solar power plant in a time zone other than the preparation time zone and the output limit time zone; ,
The control unit increases the ratio of the predicted demand amount allocated to the solar power plant subject to restriction in the preparation time zone, and increases the ratio of the predicted demand amount allocated to the solar power plant not subject to restriction. A second allocating step of correcting to reduce the ratio and allocating the predicted demand to each solar power plant according to the corrected ratio;
The control unit corrects the value of the ratio of the predicted power generation amount in the output restriction time zone so as to increase the ratio of the predicted demand amount to be allocated to the solar power plants that are not subject to restriction, and according to the ratio after the correction, A third allocation step for allocating the predicted demand to each solar power plant;
When the control unit determines that there is no solar power plant that has received a request for output restriction, the predicted demand is allocated to each solar power plant according to the ratio of the predicted power generation of each solar power plant. A fourth allocation step;
The control unit charges the solar power plant that is not subject to restriction, along with control to supply power according to the allocated predicted demand, and when the actual power generation exceeds the predicted demand A first control step for performing, as a normal process, control for performing discharge, and control for performing discharge when the actual power generation amount falls below the predicted demand amount,
The control unit performs, as an exception process, the control for limiting the power supply and the control for charging the generated power exceeding the limit for the output power limit time zone for the solar power plant to be limited, A second control step for performing the normal processing for a time zone other than the output time limit zone;
A power supply control program for causing a computer to execute. A power supply control program that is executed by a computer that operates as a power supply control device that controls the power supply amount of a plurality of solar power plants that covers power demand in a predetermined area,
The control unit includes a predicted power generation amount that is a predicted value of a daily power generation amount of each of the plurality of solar power plants, a predicted demand amount that is a predicted value of a daily power demand in the predetermined region, and each solar light A storage step of storing a predicted charge amount, which is a predicted value of the daily charge amount of the power plant, in a storage unit;
When the control unit determines that there is a solar power plant that has received a request for output restriction that restricts power supply during a specified time period, a preparation time period for preparing for the output restriction before the output restriction A setting step to set
In the time zone other than the preparation time zone and the output limit time zone, the control unit sets the predicted demand amount for each solar power according to the ratio of the total power amount and the predicted power amount of each solar power plant. A first allocation step to allocate to the power plant;
In the preparation time zone, the control unit increases the ratio of the predicted demand amount to be allocated to the restricted photovoltaic power plants, and the predicted demand amount to be allocated to unrestricted photovoltaic power plants. A second allocating step of allocating the predicted demand to each photovoltaic power plant according to the corrected ratio,
The control unit corrects the value of the total power amount ratio so as to increase the ratio of the predicted demand amount to be allocated to the solar power plants that are not restricted in the output restriction time zone, and according to the ratio after the correction. A third allocating step of allocating the predicted demand to each solar power plant;
When the control unit determines that there is no solar power plant that has received the request for output restriction, the prediction is performed according to the ratio of the total power amount of the predicted power generation amount and the predicted charge amount of each solar power plant. A fourth allocation step for allocating demand to each solar power plant;
The control unit charges the solar power plant that is not subject to restriction, along with control to supply power according to the allocated predicted demand, and when the actual power generation exceeds the predicted demand A first control step for performing, as a normal process, control for performing discharge, and control for performing discharge when the actual power generation amount falls below the predicted demand amount,
The control unit performs, as an exception process, the control for limiting the power supply and the control for charging the generated power exceeding the limit for the output power limit time zone for the solar power plant to be limited, A second control step for performing the normal processing for a time zone other than the output time limit zone;
A power supply control program for causing a computer to execute.

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