JP2017108560A - Control apparatus and control program for power accommodation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control apparatus and control program for power accommodation system, capable of functioning a storage battery as a power supply for backup for a long time by ensuring SOC of the storage battery when a power supply is shut down because of occurrence of a disaster.SOLUTION: A control apparatus 1 includes: a power prediction unit 12 predicting consuming power of a load and generated power of a solar battery; a disaster occurrence prediction unit 11 predicting a disaster occurrence probability on the basis of meteorological data; and an operation plan optimization unit 13 developing an operation plan for controlling charge and discharge of a storage battery on the basis of a prediction result of the power prediction unit 12 and a prediction result of the disaster occurence prediction unit 11.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a control device and a control program for a power interchange system.

  In recent years, electric power consumers have become more aware of global environmental problems, and systems in which photovoltaic power generation (PV: Photo voltaic) using natural energy and storage batteries are installed side by side are becoming widespread. Such a system is a power interchange system capable of supplying (transmitting) power to another system via a commercial power network or the like, and receiving (receiving) power from another system. Also used as For example, a technique for calculating the difference between supply and demand from the demand forecast value and the supply plan value of the entire power system as in Patent Document 1 below to minimize the power supply cost is also known.

JP 2014-143835 A JP 2010-124644 A

  In the control aiming at minimizing the power supply cost, charging / discharging of the storage battery is controlled for that purpose, and for example, the storage battery is often actively discharged. In this case, when the power supply is shut down due to the occurrence of a disaster (at the time of a power failure), the state of charge (SOC) of the storage battery becomes too low, and power is supplied for a sufficient time from the storage battery as a backup power supply. May not be done. In a power interchange system that supplies power to other power interchange systems, the above problem can become more apparent.

  The present invention has been made in view of the above problems, and by ensuring that the SOC of the storage battery is secured when the power supply is shut down due to the occurrence of a disaster, the storage battery functions as a backup power source for a long time. It is an object of the present invention to provide a control device and a control program for a power interchange system that can be used.

  A control device according to one embodiment of the present invention includes a solar battery, a storage battery for charging power generated from the solar battery and power from the power system, and supplying power to a load, and supplies power to the outside. A power interchangeable system control device capable of predicting power consumption of a load and power generated by a solar cell, disaster occurrence prediction means for predicting a disaster occurrence probability based on weather data, and power Creation means for creating an operation plan for controlling charging / discharging of the storage battery based on the prediction result of the prediction means and the prediction result of the disaster occurrence prediction means.

  A control program according to one embodiment of the present invention includes a solar battery, a storage battery for charging the generated power of the solar battery and power from the power system and supplying power to the load, and supplies power to the outside. A computer provided in a power interchange system capable of supplying power, a power prediction means for predicting power consumption of a load and generated power of a solar cell, and a disaster occurrence prediction means for predicting a disaster occurrence probability based on weather data Based on the prediction result of the power prediction means and the prediction result of the disaster occurrence prediction means, the function is made as a creation means for creating an operation plan for controlling charging / discharging of the storage battery.

  In the above control device and control program, the charge / discharge of the storage battery is controlled based not only on the prediction result of the power consumption of the load and the generated power of the solar battery but also on the prediction result of the disaster occurrence probability based on the weather data. An operation plan is created. The operation plan created in this way is intended to minimize the power supply cost, for example, while charging and discharging the storage battery in consideration of supplying power to the outside (for example, another power interchange system) when a disaster occurs The operation plan is such that control is performed. For example, when the occurrence of a disaster is predicted, an operation plan that maintains the SOC of the storage battery at a high level in advance is created, so that when the power is shut down due to the occurrence of a disaster, the storage battery is used as a backup power source for a long time. It becomes possible to function.

  The creation means may create an operation plan so that the discharge of the storage battery is suppressed and the storage battery is charged when the disaster occurrence probability predicted by the disaster occurrence prediction means exceeds a predetermined value. Thereby, when the possibility that a disaster will occur is high, the SOC of the storage battery can be kept high in advance.

  When the storage battery is fully charged and the generated power of the solar cell exceeds the power consumption of the load, the preparation means is configured so that surplus power obtained by subtracting the power consumption from the generated power is supplied to the outside. May be created. This makes it possible to effectively utilize surplus power that is not consumed by the load and is not charged to the storage battery.

  The power prediction means may predict the generated power of the solar cell based on weather data acquired from the outside, and the disaster occurrence prediction means may predict the disaster occurrence probability based on information on the disaster acquired from the outside. . Thereby, the prediction precision of the generated electric power of a solar cell and the prediction precision of a disaster occurrence probability can be improved.

  The creation means may optimize the cost minimization operation plan for minimizing the power supply cost based on the prediction result of the power prediction means and the prediction result of the disaster occurrence prediction means, thereby creating the operation plan. Good. Thereby, it becomes possible to make the storage battery function as a backup power source for a long time while reducing the power supply cost.

  According to the present invention, when the power supply is shut down due to the occurrence of a disaster, the storage battery can function as a backup power supply for a long time by ensuring the SOC of the storage battery.

It is a figure which shows an example of a structure of a control apparatus and an electric power interchange system. It is a figure which shows an example of the functional block of a control apparatus. It is a figure which shows the hardware constitutions of a control apparatus. It is a figure which shows an example of a structure of a control program. It is a flowchart which shows an example of the process performed by a control apparatus. It is a figure which shows another example of a structure of a control apparatus and an electric power interchange system. It is a figure which shows another example of the functional block of a control apparatus. It is a figure for demonstrating another example of the installation place of the solar cell in an electric power interchange system.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant descriptions are omitted.

  FIG. 1 is a diagram illustrating an example of a configuration of a power interchange system 9 in which the control device 1 according to the embodiment is used. The power interchange system 9 includes a solar cell 94 and a storage battery 92. The storage battery 92 can charge the power generated by the solar battery 94 and the power from the commercial power system 93 and supply power to the load 95. Further, the power accommodation system 9 supplies power to the outside of the power accommodation system 9, for example, another power accommodation system (not shown), or receives power supply from another power accommodation system (performs power accommodation). be able to. Other power interchange systems may have the same configuration as the power interchange system 9. The power supplied to the other power interchange system may be the power generated by the solar cell 94 and / or the power stored in the storage battery 92. The power supply to other power systems may be performed via the commercial power system 93 or may be performed via a different route. In FIG. 1, the power network 6 is illustrated as a route different from the commercial power system 93. The power network 6 is connected between an inverter 94a and a rectifier 96, which will be described later, and a commercial power system 93. By using the power network 6, the generated power of the solar battery 94 and / or the power stored in the storage battery 92 can be supplied to another power interchange system without going through the commercial power system 93.

  An outline of the operation of the power interchange system 9 will be described. The rectifier 96 converts the power (AC power) from the commercial power system 93 and / or the power network 6 and outputs DC power. The output DC power is supplied to the storage battery 92 and the load 95 (arrows AR1 and AR3). The rectifier 96 is configured to be able to control the voltage (output voltage) of the DC power to be output. For example, the output voltage of the rectifier 96 can be controlled by adjusting control parameters of a power conversion circuit (for example, a rectifier circuit and a booster circuit) included in the rectifier 96. This control is performed according to a communication signal (control signal) S4 from the control device 1.

  By controlling the output voltage of the rectifier 96, the power output from the rectifier 96 toward the storage battery 92 and the load 95 can be controlled. For example, when the output voltage of the rectifier 96 is increased, the electric power supplied from the rectifier 96 to the storage battery 92 and the load 95 increases. Conversely, when the output voltage of the rectifier 96 is lowered, the power supplied from the rectifier 96 to the storage battery 92 and the load 95 is reduced.

  The solar cell 94 generates and outputs electric power (DC power) corresponding to the amount of solar radiation. The electric power (generated electric power) generated by the solar cell 94 is converted into AC electric power by the inverter 94a. Thereby, the electric power generated by the solar cell 94 can be supplied to the commercial power system 93 (arrow AR5). The power generated by the solar cell 94 may be supplied to the power grid 6 (arrow AR6). Moreover, the electric power generated by the solar battery 94 can be supplied to the storage battery 92 and the load 95 via the rectifier 96 (arrows AR1 and AR4). The generated power of the solar cell 94 can be measured, and the measurement data is transmitted to the control device 1 as the communication signal S2. In the example shown in FIG. 1, the solar cell 94 is connected to a portion (an AC power line) closer to the commercial power system 93 than the rectifier 96 via an inverter 94a. The battery 92 and the load 95 may be connected to a portion (DC power line) rather than 96. This will be described later with reference to FIG.

  The storage battery 92 can be charged with power from the rectifier 96 (arrow AR1). The electric power from the rectifier 96 is the electric power from the commercial power system 93 and / or the electric power network 6 and the electric power generated by the solar cell 94. The storage battery 92 can also supply power to the load 95 by discharging (arrow AR2). Whether the storage battery 92 is in a charged state or a discharged state depends on the magnitude relationship between the power supplied from the rectifier 96 and the power consumed by the load 95. Specifically, when the electric power supplied from the rectifier 96 is larger than the electric power consumed by the load 95, the corresponding electric power is charged in the storage battery 92, so that the storage battery 92 is in a charged state. On the other hand, when the electric power supplied from the rectifier 96 is smaller than the electric power consumed by the load 95, the corresponding electric power is discharged from the storage battery 92, so that the storage battery 92 is discharged. When the rectifier 96 has a function of converting the power (direct current) of the storage battery 92 into alternating current power and outputting it to the commercial power system 93 and the power network 6, the power of the storage battery 92 is the commercial power system 93 and the power network. 6 is also supplied. Such a function is realized, for example, by providing the rectifier 96 with the function of a bidirectional inverter.

  Load 95 consumes power from storage battery 92 and power from rectifier 96 (arrows AR2 to AR4). The power consumption of the load 95 can be measured, and the measurement data is transmitted to the control device 1 as a communication signal S3.

  The weather sensor 91 acquires weather data. The weather data includes, for example, temperature, atmospheric pressure, and solar radiation. The weather sensor 91 is provided so that weather data in the power interchange system 9 can be acquired. Such weather data may be, for example, weather data at the installation position of the solar battery 94. The weather data acquired by the weather sensor 91 is transmitted to the control device 1 as the communication signal S1.

  Next, some operation examples of the power interchange system 9 will be described. Power is supplied to the load 95 by the power interchange system 9. The power supplied to the load 95 is the power from the commercial power system 93 and / or the power network 6 (arrow AR3), the power from the solar cell 94 (arrow AR4), and the power from the storage battery 92 (arrow AR2).

  The power generated by the solar cell 94 varies depending on the amount of solar radiation. For example, if the power generated by the solar battery 94 is larger than the power consumed by the load 95, a surplus is generated in the power generated by the solar battery 94. Therefore, when surplus power occurs, the power interchange system 9 charges the storage battery 92 with surplus power (arrow AR1), or supplies surplus power to another power interchange system via the commercial power system 93 and the power network 6. (Arrows AR5 and AR6). Note that not all surplus power among the power generated by the solar cell 94 is supplied to another power interchange system, but all the solar cells 94 may be supplied to another power interchange system. Whether or not to supply power to another power interchange system can be determined by controlling the power supplied from the rectifier 96 to the storage battery 92 and the load 95 (that is, controlling the output voltage of the rectifier 96). For example, when the power interchange is actively performed in another power interchange system, the output voltage of the rectifier 96 may be lowered. It is also possible to actively receive power supply from another power interchange system, and in that case, the voltage of the rectifier 96 may be increased.

  Here, the power interchange system 9 is connected to another power interchange system via the power network 6 separately from the commercial power system 93. Therefore, even if the power from the commercial power system 93 becomes unavailable due to, for example, a power outage during a disaster, and the power cannot be supplied to the outside through the commercial power system 93, the power interchange system 9 Thus, power can be supplied to another power interchange system.

  Also. The power interchange system 9 can also suppress the discharge of the storage battery 92 and actively charge the storage battery 92. For example, by setting the output voltage of the rectifier 96 to the same voltage as the voltage of the storage battery 92, the discharge of the storage battery can be suppressed in a state where the SOC of the storage battery 92 is kept constant at that voltage (floating state). . Furthermore, the storage battery 92 can be positively charged by setting the output voltage of the rectifier 96 higher than the voltage of the storage battery 92.

  It is determined by the operation plan of the power interchange system 9 whether or not the discharge of the storage battery 92 is suppressed and the storage battery 92 is positively charged or power is supplied to another power interchange system. For example, as described in Patent Document 1, the operation plan may be created so that the power supply cost in the power system including the power interchange system 9 is minimized.

  Here, if the power interchange system 9 is controlled using an operation plan created for the purpose of supplying power, for example, the storage battery 92 is often actively discharged. In this case, when the power supply is shut down due to the occurrence of a disaster (at the time of a power failure), the SOC of the storage battery 92 becomes too low, and there is a possibility that sufficient power will not be supplied from the storage battery 92 as a backup power supply. is there.

  Therefore, in the present embodiment, the control device 1 appropriately controls the power interchange system 9 so that the SOC of the storage battery 92 is ensured when the power supply is shut down due to the occurrence of a disaster. 92 can function as a backup power source for a long time.

  FIG. 2 is a diagram illustrating an example of functional blocks of the control device 1. As shown in FIG. 2, the control device 1 includes a disaster occurrence prediction unit 11, a power prediction unit 12, and an operation plan optimization unit 13.

  The disaster occurrence prediction unit 11 is a part (disaster occurrence prediction means) that predicts a disaster occurrence probability based on weather data. The weather data may be, for example, weather data acquired by the weather sensor 91 (FIG. 1). Various known methods may be used for predicting the probability of disaster occurrence based on weather data. For example, the weather sensor 91 includes an anemometer, and the disaster occurrence probability may be predicted (calculated) based on the wind speed measured by the anemometer. The housing damage rate may be predicted from the wind speed. The disaster occurrence prediction unit 11 may compare the predicted disaster occurrence probability with a predetermined value (for example,%) and output the result to the operation plan optimization unit 13.

  The power prediction unit 12 is a part (power prediction means) that predicts the power consumption (demand power) of the load 95 and the generated power of the solar battery 94. The prediction of the power consumption of the load 95 may be predicted based on, for example, historical data of the measurement result of the power consumption of the load 95, or design data of the load 95 (for example, what kind of power equipment the load 95 is configured by). Or the like). The generated power of the solar battery 94 may be predicted based on, for example, historical data of measurement results of the generated power of the solar battery 94 or design data of the solar battery 94 and weather data acquired by the weather sensor 91. The weather data here may be solar radiation data, sunshine duration data, or the like. The generated power of the solar cell 94 may be predicted by using a prediction method that uses numerical forecast models, satellite observation data, and sky image data, in addition to solar radiation data or sunshine duration data. The prediction of the power consumption of the load 95 may be calculated using a prediction method using time series data, for example. This method is an analysis method in which a power prediction model is created from a past numerical sequence recorded every time and a future prediction is made. In addition to the above-mentioned power prediction model and the above-mentioned various data, the data obtained from the weather sensor 91 (irradiation amount data or sunshine duration data, etc.) is added to calculate the solar radiation amount predicted value by calculation using the estimated conversion model, Furthermore, the predicted power generation value of the solar cell 94 is calculated by performing a calculation with the power generation data of the solar cell 94 added. As the estimated conversion model, a multiple regression model, a machine learning model, a genetic algorithm, Just-In-Time modeling, or the like may be used.

  The operation plan optimization unit 13 is a part (creation unit) that creates an operation plan for controlling charging / discharging of the storage battery 92 based on the prediction result of the disaster occurrence prediction unit 11 and the prediction result of the power prediction unit 12. . The operation plan is optimized (updated, modified, etc.) so that an appropriate response can be made in the event of a disaster. Created. The operation plan for minimizing the power supply cost is an operation plan for minimizing an electricity bill or carbon dioxide emission. Such an operation plan is created by setting an objective function for evaluating the degree of achievement of the objective and searching for an operation plan in which the value of the objective function in the predetermined period is the best. For this search, for example, an algorithm such as a genetic algorithm, tabu search, or linear programming can be used (see Patent Document 2). In addition, the above-described operation plan optimized so that an appropriate response can be made in the event of a disaster is an operation plan that allows the storage battery 92 to function as a backup power source for a long time in the event of a power failure, for example.

  For example, when the disaster occurrence probability predicted by the disaster occurrence prediction unit 11 exceeds a predetermined value, the operation plan optimization unit 13 is controlled such that the discharge of the storage battery 92 is suppressed and the storage battery 92 is actively charged. (Operation) is added (reflected) to the operation plan for minimizing the power supply cost. In this way, an optimized operation plan is created.

  Further, the operation plan optimization unit 13 determines that the storage battery 92 is fully charged (that is, the SOC is 100% or a value close thereto) and the generated power of the solar battery 94 exceeds the power consumption of the load 95. Adds the control (operation) in which surplus power obtained by subtracting the power consumption of the load 95 from the generated power of the solar cell 94 is supplied to another power interchange system to the operation plan for minimizing the power supply cost. Do (reflect). Even in this way, an optimized operation plan is created.

  The operation plan optimization unit 13 controls the power interchange system 9 based on the created operation plan. Specifically, the output voltage of the rectifier 96 is controlled so that the storage battery 92 is charged and discharged according to the operation plan.

  Next, the hardware configuration of the control device 1 will be described with reference to FIG. FIG. 3 is a hardware configuration diagram of the control device 1. As shown in FIG. 3, the control device 1 physically includes one or a plurality of central processing units (CPUs) 21, a RAM (Random Access Memory) 22 that is a main storage device, and a ROM (Read Only Memory) 23. And hardware such as a communication module 26 that is a data transmission / reception device, an auxiliary storage device 27 such as a semiconductor memory, an input device 28 that receives input from an operation panel (including operation buttons) and a touch panel, and an output device 29 such as a display. Configured as a computer. Each function of the control device 1 in FIG. 2 is obtained by, for example, reading one or a plurality of programs stored in a storage medium M such as a CD-ROM with a reading device 2A and taking it in hardware such as a RAM 22. This is realized by operating the communication module 26, the input device 28, and the output device 29 under the control of the CPU 21 and reading and writing data in the RAM 22 and the auxiliary storage device 27.

  FIG. 4 shows a module of a control program for causing a computer to function as the control device 1. As shown in FIG. 4, the control program P1 includes a disaster occurrence prediction module P11, a power prediction module P12, and an operation plan optimization module P13. The functions of the disaster occurrence prediction unit 11, the power prediction unit 12, and the operation plan optimization unit 13 described above with reference to FIG. 2 are realized by each module.

  Next, the operation of the control device 1 will be described with reference to FIG. FIG. 5 is a flowchart illustrating an example of processing (control method) executed by the control device 1. The process of this flowchart is repeatedly executed at a predetermined cycle, for example.

  First, the control device 1 acquires power data from various facilities (step S11). Specifically, the power prediction unit 12 acquires data on the power consumption of the load 95, weather data from the weather sensor 91, and the like.

  Then, the control device 1 predicts supply and demand power (step S12). Specifically, the power prediction unit 12 calculates a predicted value of power consumption of the load 95, a predicted value of generated power of the solar battery 94, and the like. Note that the amount of power may be calculated instead of the power.

  Moreover, the control apparatus 1 acquires weather data (step S13). Specifically, the disaster occurrence prediction unit 11 acquires weather data from the weather sensor 91.

  Then, the control device 1 predicts a disaster occurrence probability (step S14). Specifically, the disaster occurrence prediction unit 11 predicts the disaster occurrence probability based on the supply and demand power predicted in the previous step S12 and the weather data acquired in the previous step S13.

  Next, the control device 1 determines whether or not the disaster occurrence probability is equal to or higher than a predetermined value (step S15). For example, the operation plan optimization unit 13 executes this process based on the disaster occurrence probability predicted in the previous step S14. When the disaster occurrence probability is equal to or higher than the predetermined value (step S15: YES), the control device 1 advances the process to step S16. When that is not right (step S15: NO), the control apparatus 1 advances a process to step S17.

  In step S <b> 16, the control device 1 adds conditions for discharge prohibition and active power interchange control. Specifically, the operation plan optimizing unit 13 sets, as an additional condition, control (operation) for prohibiting discharge of the storage battery 92 and positively charging it. In addition, when the storage battery 92 is in a fully charged state, control (operation) that actively supplies power to the outside is set as an additional condition. After the process of step S16 is completed, the control apparatus 1 advances the process to step S17.

  In step S17, the control device 1 creates an optimum operation plan. This process is executed by the operation plan optimization unit 13. If the disaster occurrence probability is less than the predetermined value in the previous step S15 (step S15: NO), for example, an operation plan for minimizing the power supply cost is created based on the prediction result of the previous step S12. When the disaster occurrence probability is equal to or lower than the predetermined value in the previous step S15 (step S15: YES), an operation plan including the condition added in the previous step S16 is further created.

  Based on the operation plan created as described above, the control of the power interchange system 9 by the control device 1, more specifically, the charge / discharge control of the storage battery 92 is performed.

  Next, the function and effect of the control device 1 will be described. According to the control device 1, in order to control charging / discharging of the storage battery 92 based not only on the predicted result of the power consumption of the load 95 and the generated power of the solar battery 94 but also on the predicted result of the disaster occurrence probability based on weather data. Is created (steps S12, S14, S17). The operation plan created in this way is intended to minimize the power supply cost, for example, while charge / discharge control of the storage battery 92 taking into account the supply of power to another power interchange system in the event of a disaster. The operation plan is to be implemented. For example, when an occurrence of a disaster is predicted, an operation plan that maintains the SOC of the storage battery 92 at a high level is created in advance, so that the power is cut off due to the occurrence of the disaster (the power from the commercial power system 93 is reduced). When the battery becomes unavailable, the storage battery 92 can be used as a backup power source for a long time. When the operation plan involves the purpose of minimizing the power supply cost, for example, the cost minimization operation plan for minimizing the power supply cost is based on the prediction result of the generated power and the prediction result of the disaster occurrence probability. By optimizing, an operation plan may be created. Thereby, a storage battery can be functioned as a backup power source for a long time while reducing the power supply cost.

  The operation plan optimization unit 13 determines the operation plan so that the discharge of the storage battery 92 is suppressed and the storage battery 92 is charged when the disaster occurrence probability predicted by the disaster occurrence prediction unit 11 exceeds a predetermined value. Create (step S15: YES, steps S16, S17). Thereby, when there is a high possibility that a disaster will occur (that is, a power failure occurs), the SOC of the storage battery 92 can be kept high in advance.

  When the storage battery 92 is fully charged and the generated power of the solar battery 94 exceeds the power consumption of the load 95, the operation plan optimizing unit 13 determines that the surplus power obtained by subtracting the power consumption from the generated power is other power. An operation plan is prepared so that it may be supplied (accommodated) to the accommodation system (steps S16 and S17). Thus, surplus power that is not consumed by the load 95 and is not charged to the storage battery 92 can also be effectively utilized.

[Modification]
The above-described control device 1 predicts the power generated by the solar cell 94, the probability of occurrence of a disaster, and the like based on weather data (communication signal S1) from the weather sensor 91. On the other hand, data other than the weather data from the weather sensor 91 can be used as the weather data. 6 and 7 are diagrams for explaining a control device 1A according to such a modification. In this example, the control device 1A is used in the power interchange system 9A.

  In the power accommodation system 9A, the control device 1A can communicate with the outside of the power accommodation system 9A via the communication network 8. The communication network 8 is an internet network, for example. The control device 1 can acquire, via the communication network 8, weather information provided by the Japan Meteorological Agency and information on disasters (including disaster forecasts, warnings, etc.) provided by the Ministry of Land, Infrastructure, Transport and Tourism. Such information is transmitted to the control device 1 as a communication signal S5.

  The control device 1A includes a disaster occurrence prediction unit 11A, a power prediction unit 12A, and an operation plan optimization unit 13A. These elements differ from the disaster occurrence prediction unit 11, the power prediction unit 12, and the operation plan optimization unit 13 (FIG. 2) in that weather information, disaster information, and the like from the communication network 8 are used.

  That is, in the control device 1A according to the modification, the disaster occurrence prediction unit 11A predicts the generated power and the disaster occurrence probability of the solar cell 94 based on the information (communication signal S5) related to the disaster acquired from the outside. Thus, by using various weather information acquired from the outside, the prediction accuracy of the generated power of the solar cell 94 can be enhanced. Weather data (communication signal S1) from the weather sensor 91 may be used together. The power prediction unit 12A predicts a disaster occurrence rate based on weather data (communication signal S5) acquired from the outside. Thus, by using information on various disasters acquired from the outside, the prediction accuracy of the disaster occurrence probability can be improved. Weather data (communication signal S1) from the weather sensor 91 may be used together.

  Further, the control device 1 may acquire various information at a plurality of external points via the communication network 8. The plurality of external points are power data and the like in another power interchange system in the power system including the power interchange system 9A. Other power interchange systems may have the same configuration as the power interchange system 9A. The power data may include information regarding power consumption of a load, power generated by a solar battery, and the like. In this way, by using various information at a plurality of external points, it is possible to create an operation plan that optimizes the operation of the entire power system in the power interchange system 9A.

  Finally, another example of the installation location of the solar cell in the power interchange system will be described. In the power interchange system 9 </ b> B shown in FIG. 8, the solar cell 94 is connected to a portion (DC power line) closer to the storage battery 92 and the load 95 than the rectifier 96. Even in this case, the power from the solar cell 94 can be supplied to the storage battery 92 and the load 95 (AR1, AR3), or can be supplied to the commercial power system 93 and the power network 6 (AR5, AR6). According to the configuration shown in FIG. 8, the inverter 94a (FIG. 1) for converting the DC power of the solar cell 94 into AC power can be eliminated. In the configuration shown in FIG. 8, weather information and information on disasters may be acquired and used via the communication network 8 (FIG. 6).

  DESCRIPTION OF SYMBOLS 1,1A ... Control apparatus, 11, 11A ... Disaster occurrence prediction part, 12, 12A ... Electric power prediction part, 13, 13A ... Operation plan optimization part, 9 ... Electric power interchange system, 91 ... Weather sensor, 92 ... Storage battery, 93 ... commercial power system, 94 ... solar cell, 95 ... load, 96 ... rectifier.

Claims (6)

A control device for a power interchange system comprising a solar battery, a storage battery for charging the power generated by the solar battery and power from the power system and supplying power to a load, and capable of supplying power to the outside. ,
Power prediction means for predicting the power consumption of the load and the generated power of the solar cell;
Disaster occurrence prediction means for predicting disaster occurrence probability based on weather data;
Creating means for creating an operation plan for controlling charging and discharging of the storage battery based on the prediction result of the power prediction means and the prediction result of the disaster occurrence prediction means;
A control device comprising: The creation means creates the operation plan such that when the disaster occurrence probability predicted by the disaster occurrence prediction means exceeds a predetermined value, discharging of the storage battery is suppressed and charging of the storage battery is performed. To
The control device according to claim 1. In the case where the storage battery is fully charged and the generated power of the solar battery exceeds the power consumption of the load, the creating means supplies the external power that is obtained by subtracting the power consumption from the generated power. To create the operation plan,
The control device according to claim 1 or 2. The power prediction means predicts the generated power of the solar cell based on weather data acquired from the outside,
The disaster occurrence prediction means predicts the disaster occurrence probability based on information on disasters acquired from the outside,
The control device according to claim 1. The creating means optimizes the operation plan by minimizing a cost minimizing operation plan for minimizing power supply cost based on the prediction result of the power prediction means and the prediction result of the disaster occurrence prediction means. create,
The control device according to claim 1. A computer provided in a power interchange system comprising a solar battery, a storage battery for charging power generated by the solar battery and power from the power system and supplying power to a load, and capable of supplying power to the outside The
Power prediction means for predicting the power consumption of the load and the generated power of the solar cell;
Disaster occurrence prediction means for predicting disaster occurrence probability based on weather data;
Creating means for creating an operation plan for controlling charge / discharge of the storage battery based on the prediction result of the power prediction means and the prediction result of the disaster occurrence prediction means;
Control program to function as.

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