JP2005278337A - Power supply system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply system comprising a photovoltaic power generator and a power supply unit in which high quality power is supplied to a power load unit. <P>SOLUTION: The power supply system comprises a photovoltaic power generator 3 and a power supply unit 4 linked with a commercial power system, a power load unit 5 being supplied with power from at least one of the photovoltaic power generator 3, the power supply unit 4, and the commercial power system 1, and a means H for controlling operation of the power supply unit 4. The control means H judges whether operation of the power supply unit 4 is permitted or not based on the magnitude of power being generated from the photovoltaic power generator 3 and controls operation of the power supply unit 4 such that the photovoltaic power generator 3 and the power supply unit 4 are not operated simultaneously to generate power. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention includes a photovoltaic power generation apparatus and a power supply apparatus linked to a commercial power system, a power load apparatus that receives power supply from at least one of the solar power generation apparatus, the power supply apparatus, and the commercial power system, The present invention relates to a power supply system provided with control means for controlling operation of a power supply device.

  In such a power supply system, a solar power generation device and a power supply device such as a fuel cell or a combined heat and power supply device are connected to a commercial power system, and power is supplied from at least one of the solar power generation device, the power supply device, and the commercial power system. Is supplied to the power load device (see, for example, Patent Document 1).

JP 2002-199592 A

In the power supply system described above, a large number of power sources such as a photovoltaic power generation device and a power supply device are connected to the same system, and therefore, interference of disturbance signals such as high frequencies occurs between a plurality of power sources in the system. Therefore, there is a possibility that high-quality power cannot be supplied.
Further, in such a power supply system, in order to prevent the photovoltaic power generation apparatus and the power supply apparatus from being in a single operation state when an accident such as a power failure occurs in the commercial power system, The single operation detection signal of the set frequency is superimposed on each of the power from the power supply unit, and the single operation detection signal is detected when an accident such as a power failure occurs in the commercial power system. Even if the solar power generation device and the power supply device are configured to be disconnected from the commercial power system, mutual interference of disturbance signals occurs and the detection sensitivity of the isolated operation detection signal decreases. Thus, the detection sensitivity of the isolated operation state is lowered, and there is a risk that the isolated operation state of a large number of power sources such as the solar power generation device and the power supply device is continued.

  The present invention has been made in view of the above-described problems, and its purpose is to safely supply high-quality power to a power load device while providing a plurality of power sources, that is, a solar power generation device and a power supply device. It is in providing a power supply system that can be performed.

  In order to achieve the above object, a first characteristic configuration of a power supply system according to the present invention includes a solar power generation device and a power supply device linked to a commercial power system, the solar power generation device, the power supply device, and a commercial power supply. An electric power supply system including an electric power load device that receives electric power from at least one of electric power systems, and a control unit that controls operation of the power supply device, wherein the control unit includes the solar light Based on the magnitude of the generated power of the power generator, the power generation operation permission of the power supply device and the power generation operation disapproval are determined, so that the solar power generation device and the power supply device do not generate power simultaneously. It is in the point comprised so that a driving | operation may be controlled.

According to the first characteristic configuration, the control means determines whether to allow the power generation operation of the power supply device and not to permit the power generation operation based on the magnitude of the generated power of the solar power generation device, and Is configured to control the operation of the power supply unit so that it does not generate power at the same time, no disturbance signal interaction occurs between the solar power generation device and the power supply unit, and stable power supply is performed Will be able to.
Further, as described above, since the occurrence of the disturbance signal interaction between the photovoltaic power generation apparatus and the power supply apparatus is suppressed, the photovoltaic power generation apparatus and the power supply apparatus are brought into the single operation state when the commercial power system fails. When an isolated operation prevention device is installed for the purpose of preventing this, the isolated operation state is reliably detected, preventing the danger of continuing the isolated operation state of a large number of power sources such as solar power generation devices and power supply devices. can do.
Therefore, it is possible to provide a power supply system that can safely supply high-quality power to the power load device while providing a plurality of power sources such as a solar power generation device and a power supply device.

  According to a second characteristic configuration of the power supply system of the present invention, in addition to the first characteristic configuration, a generated power measuring unit that measures the generated power of the photovoltaic power generation apparatus is provided, and the control unit is configured to generate the generated power. It is the point which is comprised so that the actual generated electric power measured by the measurement means may be referred.

  According to the second characteristic configuration, since the control means is configured to refer to the actual generated power measured by the generated power measuring means, the photovoltaic power generation apparatus and the power supply apparatus do not generate power simultaneously. Thus, it is possible to determine whether or not the power generation operation of the power supply device is permitted and the power generation operation is not permitted so that the above is reliably achieved.

  According to a third characteristic configuration of the power supply system according to the present invention, in addition to the first characteristic configuration, a generated power prediction unit that predicts the generated power of the solar power generation device is provided, and the control unit includes the generated power. It is the point which is comprised so that the generated electric power predicted by the prediction means may be referred.

  According to the above third feature configuration, even if the magnitude of the generated power of the actual photovoltaic power generation apparatus frequently fluctuates across the set value for determination when the power supply apparatus is permitted to perform power generation operation or is not permitted. The control means does not frequently start and stop the power supply device based on the predicted generated power that is predicted by the generated power prediction means and does not include frequent fluctuations across the setting value for determination. It is possible to perform efficient operation.

  According to a fourth characteristic configuration of the power supply system of the present invention, in addition to the third characteristic configuration, the photovoltaic power generation apparatus is configured such that the generated power prediction means is based on weather prediction information provided via an information communication line. It is in the point comprised so that the generated electric power of this may be estimated.

  According to the fourth feature configuration, the generated power prediction means can generate solar power based on weather prediction information that can accurately predict the movement of clouds that may block sunlight irradiated to the solar power generation device. Since it is configured to predict the generated power of the device, when performing the power generation operation permission and power generation operation disapproval of the power supply device based on the prediction result, the solar power generation device and the power supply device do not generate power simultaneously. This can be ensured with a high probability.

  The fifth characteristic configuration of the power supply system according to the present invention is, in addition to the third characteristic configuration, provided with generated power measuring means for measuring the generated power of the solar power generation device, and the generated power prediction means includes the The configuration is such that the predicted generated power data is corrected based on the actual generated power measured by the generated power measuring means to predict the future generated power of the solar power generation device.

  According to the fifth characteristic configuration, the generated power prediction unit corrects the predicted generated power data based on the actual generated power measured by the generated power measurement unit, and predicts the future generated power of the photovoltaic power generation apparatus. Thus, it is possible to correct the error between the predicted generated power data and the actual generated power and accurately predict the future generated power.

<First Embodiment>
A power supply system according to a first embodiment of the present invention will be described below with reference to the drawings.
The power supply system shown in FIG. 1 includes a solar power generation device 3 linked to a commercial power system 1 and a thermoelectric power supply device 4 as a power supply device, a commercial power system 1, a solar power generation device 3, and a cogeneration device. An electric power load device 5 that is supplied with electric power from at least one of the four electric power supply devices 4 and a control unit H as a control unit that controls the operation of the cogeneration device 4 are provided.

The solar power generation device 3 is connected to the load system 2 connected to the commercial power system 1 and the power load device 5 via the inverter 7 and the circuit breaker CB1, and the generated power of the solar power generation device 3 is It is configured to be measured by the generated power measuring means 15.
The combined heat and power supply device 4 includes a gas engine cogeneration device including an engine that generates exhaust heat and a generator driven by the engine, and a fuel cell power generation device that discharges heat while performing a power generation operation. The electric power is supplied to the electric power load device 5 through the load system 2 connected through the circuit breaker CB2, and the exhaust heat is stored in the heat medium storage unit 8 to have a load such as hot water supply or heating. Supplied to the device 6. In addition, when the amount of heat stored in the heat medium storage unit 8 is small or regardless of the amount of heat stored in the heat medium storage unit 8, the heat generated by the auxiliary heating device 9 is supplied to the heat load device 6. It can also be supplied. The auxiliary heating device 9 can be realized by using a device such as a boiler that consumes fuel and generates heat.

  Further, when the amount of power generated by the solar power generation device 3 and the combined heat and power supply device 4 is larger than the power load amount of the power load device 5, the surplus power amount is reversely flowed to the commercial power system 1 to sell power. Is possible. Alternatively, the power load amount of the surplus power recovery heater 10 can be adjusted to convert the surplus power amount into heat and store the heat in the heat medium storage unit 8.

  The control unit H performs a data update process for updating and storing the past load data for one day in a state in which it is associated with the day of the week based on the actual usage state, and for each day that is stored, the stored one day From the past load data, predicted load calculation processing for obtaining predicted load data for one day of the day is performed.

  When the description of the data update processing is added, past load data for one day indicating how much power load amount, hot water supply heat load amount and heating heat load amount as heat load in which time zone in one day is obtained. It is configured to be updated and stored in a state associated with the day of the week.

First, the past load data will be described. The past load data is composed of three types of load data, that is, power load amount data, hot water supply heat load amount data, and heating heat load amount data. As shown in FIG. The past load data is stored in a state where the past load data is divided for each day of the week from Sunday to Saturday.
The past load data for one day includes 24 pieces of power load amount data per unit time, 24 pieces of hot water supply heat load amount data per unit time, and one unit of 24 hours. It consists of 24 pieces of heating heat load data per hour.

When the configuration for updating the past load data as described above is added, the power load amount and the heat load amount per unit time (the hot water supply heat load amount and the heating heat load amount) are measured from the actual usage state. In a state where the measured load data is stored, the actual load data for one day is stored in association with the day of the week.
When the actual load data for one day is stored for one week, new past load data is obtained by adding the past load data and the actual load data at a predetermined ratio for each day of the week. New past load data is stored and the past load data is updated.

Specifically, taking Sunday as an example, as shown in FIG. 2, from the past load data D1m corresponding to Sunday among the past load data and the actual load data A1 corresponding to Sunday among the actual load data, New past load data D1 (m + 1) corresponding to Sunday is obtained by the following [Equation 1], and the obtained past load data D1 (m + 1) is stored.
In the following [Expression 1], D1m is past load data corresponding to Sunday, A1 is actual load data corresponding to Sunday, K is a constant of 0.75, and D1 (m + 1) is And new past load data.

[Formula 1]
D1 (m + 1) = (D1m × K) + {A1 × (1-K)}

When the predicted load calculation process is further described, it is executed each time the date is changed, and how much power load amount, hot water supply heat load amount, and heating heat load amount are predicted for which time zone of the day. It is comprised so that the estimated load data of may be calculated | required.
That is, out of the seven past load data for each day of the week, by adding the past load data corresponding to the day of the day and the actual load data of the previous day at a predetermined ratio, how much power load amount in which time zone, It is configured to obtain predicted load data for one day on the day of whether the hot water supply heat load amount and the heating heat load amount are predicted.

More specifically, the case of obtaining the predicted load data for one day on Monday is described as an example. As shown in FIG. 2, seven past load data D1m to D7m for each day of the week and seven actual load data A1 for each day of the week are shown. ~ A7 are stored, the predicted load data for one day on Monday is calculated from the past load data D2m corresponding to Monday and the actual load data A1 corresponding to Sunday of the previous day by the following [Formula 2]. Find B.
As shown in FIG. 3, the predicted load data B for one day is predicted power load amount data for one day, predicted hot water supply heat load data for one day, predicted heating heat load data for one day. 3 (a) shows the predicted power load amount for one day, (b) in FIG. 3 shows the predicted heating heat load amount for one day, C) shows the predicted hot water supply heat load for one day.
In the following [Formula 2], D2m is past load data corresponding to Monday, A1 is actual load data corresponding to Sunday, Q is a constant of 0.25, and B is a predicted load. Data.

[Formula 2]
B = (D2m × Q) + {A1 × (1-Q)}

Next, the power generation operation control of the cogeneration apparatus 4 performed by the control unit H will be described with reference to the flowchart of FIG.
In step 100, the control unit H acquires the value of the generated power of the solar power generation device 3 measured by the generated power measuring means 15 and determines whether or not the generated power is equal to or greater than the determination set value. This determination setting value is a power value for determining whether or not the photovoltaic power generation apparatus 3 is performing a power generation operation, and the control unit H determines that the acquired actual generated power value is the above-described determination setting. When the value is equal to or greater than the value, it is determined that the solar power generation device 3 is performing a power generation operation, and when it is less than the determination setting value, it is determined that the solar power generation device 3 is not performing a power generation operation. ing.

  When the control unit H determines in step 100 that the generated power of the solar power generation device 3 is less than the setting value for determination, that is, when it is determined that the solar power generation device 3 is not in a power generation operation, the next step is step. In 102, it is determined whether or not the combined heat and power supply device 4 is performing a power generation operation. When the controller H determines that the combined heat and power supply device 4 is not in a power generation operation, the control unit H permits the power generation operation of the combined heat and power supply device 4 to operate, and the generated power is supplied from the combined heat and power supply device 4 to the load system 2. So that As a result, a state is formed in which only the combined heat and power supply device 4 of the photovoltaic power generation device 3 and the combined heat and power supply device 4 is in a power generation operation. On the other hand, when the control unit H determines in step 102 that the combined heat and power supply device 4 is performing a power generation operation, only the combined heat and power supply device 4 among the photovoltaic power generation device 3 and the combined heat and power supply device 4 is already in that state. Since the power generation operation is in progress, the process returns to the beginning of the power generation operation control flowchart.

  When the control unit H determines in step 100 that the generated power of the solar power generation device 3 is equal to or greater than the set value for determination, that is, when it is determined that the solar power generation device 3 is in power generation operation, the next step is In 106, it is determined whether or not the combined heat and power supply device 4 is performing a power generation operation. When the controller H determines that the combined heat and power supply device 4 is performing a power generation operation, the control unit H disallows the power generation operation of the combined heat and power supply device 4 and stops the power supply to the load system 2 from the combined heat and power supply device 4. Avoid it. As a result, a state is formed in which only the solar power generation device 3 among the solar power generation device 3 and the combined heat and power supply device 4 is in a power generation operation. On the other hand, when the control unit H determines in step 106 that the combined heat and power supply device 4 is not in a power generation operation, the state is already generated only by the photovoltaic power generation device and the photovoltaic power generation device 3 in the combined heat and power supply device 4. Since it is in an operating state, the process returns to the beginning of the flowchart of this power generation operation control.

As described above, when the combined heat and power supply device 4 is not permitted for the power generation operation, the controller H predicts the predicted power load of the power load device 5 or the predicted heat load of the heat load device 6 during the time period when the power generation operation is not permitted. Even when the heat and power cogeneration device 4 is generated, the power load device 5 is supplied with the power generated by the solar power generation device 3 and the power from the commercial power system 1, and is supplied to the heat load device 6. Controls to supply the heat stored in the heat medium storage unit 8 or the heat generated by the auxiliary heating device 9.
In this way, since the operation of the thermoelectric generator 4 is controlled so that the photovoltaic generator 3 and the combined heat and power supply device 4 do not generate electricity at the same time, a disturbance signal is generated between the photovoltaic power generator 3 and the combined thermoelectric generator 4. Thus, stable power supply can be performed to the power load device 5 via the load system 2.

Second Embodiment
The power supply system of the second embodiment shown in FIG. 5 does not actually measure the generated power of the solar power generation device 3 but predicts the generated power of the solar power generation device 3 using the generated power prediction means 16. This is different from the power supply system of the first embodiment. The power supply system of the second embodiment will be described below with reference to the flowcharts of power generation operation control shown in FIGS. 5 and 6, but the same description as in the first embodiment will be omitted.

  As shown in FIG. 5, the control unit H having the generated power prediction means 16 capable of predicting the generated power of the solar power generation device 3 as one function includes the communication unit 11 and the information communication line 12 such as the Internet. The weather forecast information providing unit 13 is connected to be communicable with each other. The weather forecast information providing unit 13 analyzes the wide-area and local actual weather forecast information, predicts future weather broadly and locally, and can deliver the weather forecast information via the information communication line 12 Device. Therefore, the generated power prediction means 16 predicts the time-series generated power of the solar power generation device 3 based on weather-predicted information such as time-series solar radiation and cloud amount provided via the information communication line 12. Is possible.

  In step 200, when the date changes to midnight, the control unit H determines that the generated power prediction means 16 is, for example, 24 hours of the solar power generation device 3 based on the weather prediction information distributed from the weather prediction information providing unit 13. Time-series generated power within the determination target period is predicted. Next, in step 202, the control unit H sets the cogeneration device 4 to not permit the power generation operation in a time zone in which the predicted time-series generated power is less than the setting value for determination, and the predicted time-series power generation. An operation plan of the cogeneration device 4 is created so that the cogeneration device 4 is allowed to generate power during a time period when the electric power is equal to or greater than the determination set value. In step 204, when the predicted power load of the power load device 5 or the predicted heat load of the heat load device 6 is generated in the time zone in which the power generation operation is permitted, the control unit H combines the heat and power supply device to cover those loads. 4 is controlled to operate. On the other hand, the control unit H does not operate the combined heat and power supply device 4 even if the predicted power load of the power load device 5 or the predicted heat load of the heat load device 6 occurs during the time period when the power generation operation is not permitted, The electric power load device 5 is supplied with the electric power generated by the solar power generation device 3 and the electric power from the commercial power system 1, and the heat load device 6 is supplied with heat or auxiliary heating stored in the heat medium storage unit 8. The heat generated by the device 9 is supplied.

<Third Embodiment>
The power supply system of the third embodiment shown in FIG. 7 corrects the preset predicted generated power data based on the actual generated power of the solar power generation device 3 measured by the generated power measuring means 15. This embodiment is different from the above embodiment in that it is configured to predict the future generated power of the solar power generation device 3. Hereinafter, the power supply system according to the third embodiment will be described with reference to FIGS. 7, 8, and 9, but the same description as that of the first embodiment and the second embodiment will be omitted.

  As shown in FIG. 7, the generated power prediction means 16 provided as one function of the control unit H has preset time-series predicted generated power data as shown by a one-dot chain line in FIG. 9. ing. The predicted generated power data shown in FIG. 9 is determined by a normal distribution when the generated power at sunrise and sunset is the lowest generated power and the generated power at noon is the highest generated power. The minimum generated power is 0 Wh, and the maximum generated power is the latitude and longitude at which the solar power generation device 3 is installed, the installation posture such as the inclination of the solar panel provided in the solar power generation device 3 with respect to the sun, and the solar power generation device. 3 is a value determined by the rated output of 3. Alternatively, the predicted generated power data may be based on the actual generated power of the solar power generation device 3 measured by the generated power measuring unit 15.

  In Step 300 in FIG. 8, when the date changes to midnight, the control unit H uses the above-described predicted generated power data to calculate the time-series generated power within the determination period of, for example, 24 hours of the solar power generation device 3. In the time zone in which the predicted and predicted time-series generated power is less than the setting value for determination, the cogeneration device 4 is not permitted to generate power, and the predicted time-series generated power is greater than or equal to the setting value for determination. An operation plan for the combined heat and power supply device 4 is created so that the combined heat and power supply device 4 is permitted to generate power during the time period. Thereafter, in step 302, for example, at time t, the control unit H sets the predicted generated power data set in advance based on the actual generated power of the solar power generation device 3 measured by the generated power measuring means 15. Correct. For example, when the predicted generated power of the solar power generation device 3 indicated by the one-dot chain line in FIG. 9 is Pp, and the actual generated power of the solar power generation device 3 measured by the generated power measuring means 15 at time t is Pr. The generated power prediction means 16 converts the predicted generated power data from the time series predicted generated power data set by the one-dot chain line into the curve indicated by the broken line while maintaining the curve tendency of the predicted data as a whole. The correction is made so that it is reduced, and the corrected curve is predicted as the future generated power.

In step 304, the control unit H makes the power generation operation prohibition of the combined heat and power supply device 4 in a time zone in which the corrected time-series generated power is less than the determination set value, and the predicted time-series generated power An operation plan of the cogeneration device 4 is created so that the cogeneration device 4 is allowed to generate power during the time period when the value is equal to or greater than the set value for determination. For example, according to the waveform of the predicted generated power data indicated by the one-dot chain line in FIG. 9, when it is raining and cloudy, the time when the generated power of the solar power generation device 3 falls below the set value for determination in the evening is sunny. Since it is earlier than the hour, the time when the combined heat and power supply device 4 is permitted to perform the power generation operation is predicted to be earlier.
Next, in step 306, when the predicted power load of the power load device 5 or the predicted heat load of the heat load device 6 occurs in the time zone in which the power generation operation is permitted, the control unit H supplies both heat and electricity to cover these loads. The apparatus 4 is controlled to operate. On the other hand, the control unit H does not operate the combined heat and power supply device 4 even if the predicted power load of the power load device 5 or the predicted heat load of the heat load device 6 occurs during the time period when the power generation operation is not permitted, The electric power load device 5 is supplied with the electric power generated by the solar power generation device 3 and the electric power from the commercial power system 1, and the heat load device 6 is supplied with heat or auxiliary heating stored in the heat medium storage unit 8. The heat generated by the device 9 is supplied.

<Another embodiment>
<1>
In the above embodiment, the case where a combined heat and power device is used as the power supply device has been described. However, various other generators can be used.

<2>
In the said embodiment, although the control part H demonstrated the form controlled to stop the driving | operation of the cogeneration apparatus 4 when making the cogeneration apparatus 4 power generation operation disapproval, for example, the cogeneration apparatus 4 and load You may employ | adopt the form controlled by opening the circuit breaker CB2 provided between the system | strains 2 so that the combined heat and power supply apparatus 4 may not perform the electric power generation driving | operation with respect to the load system | strain 2. FIG. Then, when the circuit breaker CB2 is opened even though the combined heat and power supply device 4 is in operation, the control unit H converts the surplus power generated in the combined heat and power supply device 4 into heat using the surplus power recovery heater 10. The heat medium storage unit 8 may store heat.

<3>
In the second embodiment, the time when the generated power prediction means 16 predicts the time-series generated power of the solar power generation device 3 based on the weather prediction information distributed from the weather prediction information providing unit 13 is the above-mentioned morning. It is not limited to 0:00. For example, every time the weather prediction information is updated in the weather prediction information providing unit 13, the generated power prediction means 16 receives the distribution of the weather prediction information and re-predicts the time-series generated power of the solar power generation device 3. Then, the control unit H may perform operation control of the combined heat and power supply device 4 based on the predicted time-series generated power.

<4>
In the third embodiment, as the predicted generated power data, a normal distribution curve is used when the generated power at sunrise and sunset is the lowest generated power and the generated power at noon is the highest generated power. Predicted generated power data may be used. For example, the generated power prediction means 16 predicts time-series generated power of the solar power generation device 3 based on the weather prediction information described in the second embodiment, and the predicted time-series generated power value. Can also be used as the predicted generated power data.

<5>
The setting value for determination for determining whether the solar power generation device 3 is performing the power generation operation may not be one value. For example, when a numerical value range having a width such as an upper limit setting value for determination and a lower limit setting value for determination is set, and the control unit H generates power generated by the solar power generation device 3 below the lower limit setting value for determination. It may be configured such that the combined heat and power supply device 4 is permitted for power generation operation, and when the generated power of the solar power generation device 3 exceeds the upper limit setting value for determination, the combined heat and power supply device 4 is not permitted for power generation operation.

<6>
In the said embodiment and another embodiment, in order to determine whether the solar power generation device 3 is performing electric power generation operation, it is monitored whether generated electric power is more than the setting value for determination. Instead, an equivalent amount (such as current or voltage) may be used. For example, you may determine whether the solar power generation device 3 is performing electric power generation operation based on whether the electric current and voltage proportional to generated electric power are more than a setting value.

Functional block diagram of the power supply system of the first embodiment Diagram explaining data update process Diagram showing time-series data Flowchart of power generation operation control of the first embodiment Functional block diagram of the power supply system of the second embodiment Flowchart of power generation operation control of the second embodiment Functional block diagram of the power supply system of the third embodiment Flowchart of power generation operation control of the third embodiment Graph showing predicted generated power data and corrected predicted generated power data

Explanation of symbols

1 Commercial Power System 3 Photovoltaic Generator 4 Combined Heat and Power Device (Power Supply Device)
5 Electric load device H Control part (control means)

Claims (5)

A photovoltaic power generation apparatus and a power supply apparatus linked to a commercial power system, a power load apparatus that receives power from at least one of the photovoltaic power generation apparatus, the power supply apparatus, and the commercial power system, and the power supply A power supply system provided with a control means for controlling the operation of the apparatus,
The control means determines whether to allow the power generation operation of the power supply device or not to allow the power generation operation based on the magnitude of the generated power of the solar power generation device, and the solar power generation device and the power supply device generate power simultaneously. An electric power supply system configured to control operation of the power supply device so as not to operate. A generated power measuring means for measuring the generated power of the solar power generator is provided,
The power supply system according to claim 1, wherein the control unit is configured to refer to actual generated power measured by the generated power measurement unit. A generated power prediction means for predicting the generated power of the solar power generation device is provided,
The power supply system according to claim 1, wherein the control unit is configured to refer to the generated power predicted by the generated power prediction unit.   The power supply system according to claim 3, wherein the generated power prediction means is configured to predict the generated power of the solar power generation device based on weather prediction information provided via an information communication line. A generated power measuring means for measuring the generated power of the solar power generator is provided,
The generated power prediction means is configured to correct the predicted generated power data based on the actual generated power measured by the generated power measurement means to predict the future generated power of the solar power generation device. The power supply system according to claim 3.

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