JP6215615B2 - Power supply facility and power supply method - Google Patents

Description

  The present invention relates to a power supply facility and a power supply method, and more particularly to a power supply facility and a power supply method using renewable energy such as wind power generation and solar power generation.

  In recent years, renewable energy power generation such as wind power generation and solar power generation has attracted attention as clean energy power generation that does not emit greenhouse gases. Such renewable energy power generation has a problem that the amount of power generation is affected by weather conditions. In order to solve this problem, a technique for leveling transmission power using a secondary battery such as a NAS battery has been proposed.

JP 7-192769 A

  However, secondary batteries such as NAS batteries are generally expensive and have a short life. Therefore, there is room for improvement in the method of leveling the transmission power using the conventional secondary battery from the viewpoint of cost and life.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a power supply facility and a power supply using renewable energy that are not affected or hardly affected by the weather, and are low in cost and long in life. It is to provide a method.

  In order to solve the above-described problems, a power supply facility according to an aspect of the present invention is desired to receive power from a first power generation unit that generates power using renewable energy, and to receive power from the first power generation unit. A substation that transmits output, the substation that outputs surplus power when the power supplied from the first power generation unit exceeds the desired output, and the surplus power supplied from the substation, A heating unit that heats the heat medium, a heat storage unit that stores the heat medium heated by the heating unit, and a heat medium stored in the heat storage unit when the power supplied from the first power generation unit falls below a desired output. And a second power generation unit that generates electric power and supplies the electric power to the transformer unit.

  The second power generation unit uses the heat medium stored in the heat storage unit so that the sum of the power supplied to the power transformation unit and the power supplied from the first power generation unit to the power transformation unit is a desired output. Power may be generated.

  A detection unit that detects the amount of the heat medium stored in the heat storage unit, a prediction unit that predicts a time during which the output desired by the transformer unit can be transmitted based on the detected amount of the heat medium, and a prediction unit And a requesting unit that requests the third power generation unit connected to the power transformation unit to supply power so that the power transformation unit can transmit a desired output after a lapse of time.

  The transformer section supplies power supplied from the first power generation section to the heating section without transmitting power until a predetermined amount of heated heat medium is stored in the heat storage section, and a predetermined amount of heated heat medium is supplied to the heat storage section. May be started, the transmission of the supplied power from the first power generation unit may be started.

  You may further provide the additional heating part which heats a heating medium using exhaustive energy and supplies the heated heating medium to a thermal storage part.

  Another aspect of the present invention is also a power supply facility. This power supply facility is applied to a power transformation unit that receives power supply from a first power generation unit that generates power using renewable energy and transmits a desired output. The power supply facility includes a heating unit that receives supply of surplus power output from the transformer unit when the power supplied from the first power generation unit exceeds a desired output, and heats the heat medium with the surplus power, and heating When the power storage unit that stores the heat medium heated by the unit and the power supplied from the first power generation unit falls below the desired output, power is generated using the heat medium stored in the heat storage unit, and the power is A second power generation unit that supplies the substation unit.

  Another aspect of the present invention is a power supply method. The method includes a first power generation step of generating power in a first power generation unit using renewable energy, a first supply step of supplying electric power generated using renewable energy to a substation, and a desired from the substation When the power supplied to the transformer in the first supply step exceeds the desired output, the step of outputting surplus power from the transformer, and the surplus power from the transformer The step of heating the medium, the step of storing the heated heat medium, and the second power generation using the stored heat medium when the power supplied to the transformer section in the first supply step falls below a desired output A second power generation step for generating power at the power generation section, and a second supply step for supplying the power generated at the second power generation step to the power transformation section so that the power transformation section can transmit the desired output.

  A step of detecting the amount of stored heat medium, a step of predicting a time during which the output desired by the substation can be transmitted based on the detected amount of heat medium, and a substation being desired after the predicted time has elapsed. And a step of requesting the third power generation unit connected to the transformer unit to supply power so that the output to be transmitted can be transmitted.

  The step of using the power supplied from the first power generation unit for heating the heating medium without transmitting from the transformer unit until the predetermined amount of heated heating medium is stored, and the predetermined amount of heated heating medium is stored. The power transformation unit may further include a step of starting transmission of the supplied power from the first power generation unit.

  It should be noted that any combination of the above-described constituent elements and a conversion of the expression of the present invention between a method, an apparatus, a system, a recording medium, a computer program, etc. are also effective as an aspect of the present invention.

  According to the present invention, it is possible to provide a power supply facility and a power supply method using renewable energy that are not affected or hardly affected by the weather, and that have low cost and long life.

It is a figure for demonstrating the power supply equipment which concerns on embodiment of this invention. It is a figure for demonstrating operation | movement of the power supply equipment which concerns on embodiment of this invention. It is a figure for demonstrating operation | movement of a comparative example. It is a figure which shows an example of the calculation result of the operation rate in the electric power supply equipment which concerns on this embodiment. It is a figure which shows the simulation result of operation | movement of the power supply equipment which concerns on this embodiment. It is a figure for demonstrating the electric power supply equipment which concerns on another embodiment of this invention. It is a figure for demonstrating operation | movement of the electric power supply equipment which concerns on a modification. It is a figure which shows the simulation result of operation | movement of the electric power supply equipment which concerns on a modification. It is a figure which shows an example of the calculation result of the operation rate in the electric power supply equipment which concerns on a modification. It is a figure for demonstrating the electric power supply equipment which concerns on another embodiment of this invention.

  FIG. 1 is a diagram for explaining a power supply facility 100 according to an embodiment of the present invention. The power supply facility 100 shown in FIG. 1 outputs electric power generated using renewable energy (also called “natural energy”) to consumers. Renewable energy is recognized as being permanently available as an energy source and includes, for example, solar energy and wind energy. Power generation using renewable energy has the feature that the amount of power generation cannot be controlled. In the present specification, wind power generation will be described as an example of power generation using renewable energy.

  As shown in FIG. 1, the power supply facility 100 includes a wind power generation unit 10, a transformer unit 12, a heating unit 14, a high temperature tank 16, a low temperature tank 18, and a steam power generation unit 20. In FIG. 1, the solid line arrows indicate the flow of electricity, the broken line arrows indicate the flow of the heating medium, and the dotted line arrows indicate the flow of water or water vapor.

  The wind power generation unit 10 includes a windmill 11 that is rotated by wind power, a generator (not shown) that generates electric power from the rotational motion of the windmill 11, and the like. The wind power generation unit 10 may be a wind power plant equipped with a large windmill or a wind power generator equipped with a small windmill. Electricity generated in the wind power generation unit 10 is supplied to the transformation unit 12 through a transmission line. The amount of power generated by the wind power generation unit 10 varies depending on weather conditions.

  The power transformation unit 12 receives supply of electricity from the wind power generation unit 10, converts the electricity voltage, and transmits the electricity to the consumer. The transformer 12 is required to transmit an output desired by a consumer (hereinafter referred to as “transformer output”). The power transformer output varies depending on the demand of the consumer to whom the power supply facility 100 supplies power. In the present embodiment, when the power supplied from the wind power generation unit 10 (referred to as “wind power generation power” as appropriate) exceeds the power output of the power transformer, the power transformer 12 is the remaining surplus power obtained by subtracting the power output from the wind power. Is supplied to the heating unit 14. On the other hand, when the wind power generation power falls below the power transformer output, the power transformer 12 receives supply of power from the steam power generation unit 20 (referred to as “steam power generation” as appropriate) and combines the steam power generation and the wind power generation. The desired transformer output is transmitted to the consumer.

  The heating unit 14 is supplied with surplus power from the transformer 12 and heats the heat medium with the surplus power. As the heat medium, a heat medium that can be used in a temperature range of 200 ° C. to 600 ° C. can be suitably used. For example, a molten salt (a mixture of sodium nitrate 60% and potassium nitrate 40%) can be used. The heating unit 14 is connected to a high temperature tank 16 and a low temperature tank 18. The heating unit 14 heats the low-temperature (for example, 290 ° C.) heating medium supplied from the low-temperature tank 18 to a high temperature (for example, 550 ° C.) using surplus power, and supplies the heated heating medium to the high-temperature tank 16.

  The high-temperature tank 16 stores a high-temperature (for example, 550 ° C.) heating medium supplied from the heating unit 14. The high-temperature tank 16 is connected to the steam generator 22 of the steam power generation unit 20 so as to be able to supply a high-temperature heat medium.

  The low-temperature tank 18 stores a low-temperature (for example, 290 ° C.) heat medium discharged from the steam generator 22 of the steam power generation unit 20. The low temperature tank 18 is connected to the heating unit 14 so that a low temperature heat medium can be supplied.

  The steam power generation unit 20 generates electricity using the heat energy of the heat medium. Electricity generated in the steam power generation unit 20 is supplied to the transformation unit 12. The steam power generation unit 20 includes a steam generator 22, a steam turbine 24, a condenser 26, and a generator 28.

  The steam generator 22 heats and evaporates water by heat exchange with a high-temperature heat medium supplied from the high-temperature tank 16. The steam generated by the steam generator 22 is sent to the steam turbine 24. Further, the heat medium whose temperature has been lowered by heat exchange with water is supplied to the low temperature tank 18.

  The steam turbine 24 drives the generator 28 using the steam supplied from the steam generator 22. The generator 28 generates electricity using the power from the steam turbine 24 and supplies the electricity to the transformer 12. The condenser 26 condenses the steam discharged from the steam turbine 24 into water. This condensed water is supplied to the steam generator 22 and used again for generating steam.

  FIG. 2 is a diagram for explaining the operation of the power supply facility according to the embodiment of the present invention. Moreover, FIG. 3 is a figure for demonstrating the operation | movement at the time of outputting only a wind power generation power as it is from a transformation part as a comparative example. That is, FIG. 3 shows the operation when heat storage is not performed. In the graphs shown in FIGS. 2 and 3, the vertical axis represents power and the horizontal axis represents time. In the graphs shown in FIGS. 2 and 3, the broken line represents the wind power generation power, the solid line represents the transmission power actually transmitted from the transformer 12 to the consumer, and the dotted line represents the desired transformer output from the consumer. Represent. 2 and 3, the power transformer output is constant for simplicity of explanation, but the power transformer output actually varies depending on the demand of the consumer.

  When the supply of wind power is received from the wind power generation unit 10, the power transformation unit 12 transmits the wind power to the consumer. As shown in FIGS. 2 and 3, wind power generation usually fluctuates with time as the weather changes, and sometimes exceeds the transformer output, and sometimes falls below the transformer output. In the comparative example shown in FIG. 3, when the wind power generation power exceeds the power transformer output, the power transformer output is transmitted from the power transformer 12 to the consumer, and the surplus power that exceeds the power transformer output becomes a loss.

  On the other hand, in the power supply equipment 100 according to the present embodiment shown in FIG. 2, when the wind power generation power exceeds the power transformer output, the power transformer output is transmitted from the power transformer 12 to the consumer and surplus exceeds the power transformer output. Heat is stored using electric power. That is, the heating medium is heated by the heating unit 14 using surplus power, and the heated heating medium is stored in the high-temperature tank 16.

  When the wind power generation power falls below the power transformation unit output, steam power generation is performed by the steam power generation unit 20 using the heat medium stored in the high temperature tank 16, and the steam power generation is supplied to the power transformation unit 12. Here, the steam power generation unit 20 is configured so that the sum of the steam power generation power supplied to the power transformation unit 12 and the wind power generation power supplied from the wind power generation unit 10 to the power transformation unit 12 is a desired power transformation unit output. Then, electric power is generated using the heat medium stored in the high-temperature tank 16. Thereby, as shown in FIG. 2, even after the wind power generation power falls below the transformer output, the transmission power of the transformer 12 can be maintained at the transformer output, and the time during which the transmission power is stabilized can be increased. That is, according to the power supply facility 100 according to the present embodiment, energy regeneration and transmission power leveling can be achieved.

  The power supply facility 100 according to the present embodiment does not store surplus power using a secondary battery such as a NAS battery, but temporarily stores surplus power in the form of heat energy, and uses the heat energy when necessary. A configuration is adopted in which steam power is generated and returned to electric power. Since the heating unit 14, the high temperature tank 16, the low temperature tank 18, and the steam power generation unit 20 used in the power supply facility 100 are less expensive than the NAS battery, the cost of the power supply facility 100 can be reduced. In addition, the heating unit 14, the high temperature tank 16, the low temperature tank 18, and the steam power generation unit 20 used in the power supply facility 100 have a longer life than the secondary battery, so that the life of the power supply facility 100 can be extended. it can.

  FIG. 4 shows an example of the calculation result of the operation rate (rated transmission rate) in the power supply facility according to the present embodiment. FIG. 4 also shows an example of the operation rate calculation result in the configuration in which the heat storage described in FIG. 3 is not performed as a comparative example. Here, the wind power rated output was set to 50 MW and the transformer output was set to 10 MW as the calculation conditions. Moreover, as conditions of this embodiment for performing heat storage, the steam power generation efficiency was set to 0.4, and the heat storage capacity was set to 2000 MWh.

  In the present embodiment, the amount of wind power generated by the wind power generation unit 10 is 96 GWh / year, the amount of wind power transmitted as wind power is 44 GWh / year, and the amount of heat stored in the high-temperature tank 16. Was 47 GWh / year. Since the steam power generation efficiency is 0.4, the amount of steam dispatched to be sent from the steam power generation unit 20 to the transformation unit 12 is heat storage amount × steam power generation efficiency = 47 GWh / year × 0.4≈19 GWh / year. The total amount of power transmitted by combining the amount of wind power transmitted and the amount of steam shipped is 44 GWh / year + 19 GWh / year = 63 GWh / year. The ratio of the total power transmission amount to the wind power generation amount is (63 GWh / year) / (96 GWh / year) × 100≈66%. Therefore, the operation rate is (63 GWh / year) / (10 MW × 24 hours × 365 days) ≈72%.

  On the other hand, in the comparative example, the wind power generation amount is 96 GWh / year and the wind power transmission amount is 44 GWh / year. These are the same as in this embodiment, but since the heat is not stored in the comparative example, the wind power generation amount is the total. It becomes the amount of power transmission. Therefore, the ratio of the total power transmission amount to the wind power generation amount is (44 GWh / year) / (96 GWh / year) × 100≈46%. Therefore, the operation rate is (44 GWh / year) / (10 MW × 24 hours × 365 days) ≈51%. Thus, according to this embodiment, an operation rate can be improved compared with the case where heat storage is not performed.

  FIG. 5 shows a simulation result of the operation of the power supply facility according to the present embodiment. In the simulation result shown in FIG. 5, the vertical axis represents power and the horizontal axis represents time. The broken line represents wind power generation power, and the solid line represents transmission power. The conditions of this simulation are the same as the operation rate calculation described with reference to FIG. 4, and the transformer output is 10 MW. As shown in the simulation result of FIG. 5, according to the power supply facility 100 according to the present embodiment, transmission power can be leveled.

  FIG. 6 is a diagram for explaining a power supply facility 200 according to another embodiment of the present invention. In the power supply facility 200 shown in FIG. 6, the same or corresponding components as those in the embodiment shown in FIG.

  As illustrated in FIG. 6, the power supply facility 200 according to the present embodiment further includes a control unit 60. The control unit 60 includes a detection unit 62, a prediction unit 64, and a request unit 66. The control unit 60 is realized by a CPU, a memory, a program loaded in the memory, a sensor, and the like, and here, functional blocks realized by their cooperation are depicted. Those skilled in the art will understand that these functional blocks can be realized in various forms by a combination of hardware and software.

  The detection unit 62 detects the amount of the heated heat medium stored in the high temperature tank 16. The predicting unit 64 predicts a time during which the substation 12 can transmit the desired substation output based on the amount of heat medium detected by the detector 62. The requesting unit 66 requests the thermal power generation unit 68 connected to the substation 12 to supply power so that the substation 12 can transmit the desired substation output after the time predicted by the prediction unit 64 has elapsed. To do.

  Although it is difficult to predict fluctuations in power generated by the wind power generation unit 10, the power generated by the steam power generation unit 20 can be controlled. Therefore, when the power generation unit output is transmitted by combining wind power generation power and steam power generation power, based on the amount of the heat medium stored in the high temperature tank 16, the time during which the power conversion unit 12 can transmit the power conversion unit output is determined. Can be predicted. For example, the predicting unit 64 can predict that the transformer output can be transmitted for 3 hours from now, but the transformer output cannot be transmitted after 3 hours have elapsed. In the present embodiment, the power generation unit 68 connected to the transformer unit 12 is requested to supply power by using the point that the time during which the transformer unit output can be transmitted can be predicted. For example, when it is predicted by the prediction unit 64 that the output of the power transformation unit cannot be transmitted after 3 hours, the thermal power generation unit 68 is requested to start supplying power to the power transformation unit 12 after 3 hours. When electric power is supplied from the thermal power generation unit 68, a desired power transformation unit output can be transmitted even when the wind power generation power and the steam power generation are insufficient.

  Here, the thermal power generation unit is illustrated as the third power generation unit different from the wind power generation unit 10 and the steam power generation unit 20, but the third power generation unit is not particularly limited to the thermal power generation unit, for example, hydropower generation It may be. The third power generation unit is preferably capable of transmitting the output more stably than the wind power generation unit 10.

  Next, a modification of the embodiment shown in FIG. 6 will be described. FIG. 7 is a diagram for explaining the operation of the power supply facility according to the modification. In this modification, the transformer 12 supplies the wind power from the wind power generation unit 10 to the heating unit 14 without transmitting it to the consumer until a predetermined amount of heated heat medium is stored in the high temperature tank 16. . The heating unit 14 heats the heat medium using this wind power generation power, and supplies it to the high temperature tank 16. Then, when a predetermined amount of heated heat medium is stored in the high-temperature tank 16, the transformer 12 starts to transmit wind-generated power to consumers. The point that heat is stored with surplus power when the wind power generation power exceeds the transformer output and the point that steam power generation is performed with heat storage when the wind power generation power is lower than the substation output are the same as in the above embodiment.

  In the embodiment shown in FIG. 6, the power transmission stop time can be predicted when the wind power generation power and the steam power generation are combined to transmit the transformer output, but when only the wind power generation is transmitted, Power fluctuations cannot be predicted. On the other hand, according to this modification, it is possible to almost completely predict the fluctuation of the transmission power from the transformer 12, so it is possible to request the third power generator to start power supply at an appropriate timing, Transmission power can be stabilized.

  FIG. 8 shows a simulation result of the operation of the power supply facility according to the modification. In the simulation result shown in FIG. 8, the vertical axis represents power and the horizontal axis represents time. The broken line represents wind power generation power, and the solid line represents transmission power. The conditions of this simulation are the same as the operation rate calculation described with reference to FIG. 4, and the transformer output is 10 MW. When the simulation result shown in FIG. 8 is seen, compared with the simulation result shown in FIG. 5, the transmission power of this modification can maintain the desired transformer output (10 MW) for a long time, and is more leveled. You can see that.

  FIG. 9 shows an example of the calculation result of the operation rate (rated transmission rate) in the power supply facility according to the modification. FIG. 9 also shows an example of an operation rate calculation result in a configuration in which transmission power is leveled using a NAS battery as a comparative example. Here, the wind power rated output was set to 50 MW and the transformer output was set to 10 MW as the calculation conditions. As conditions for the configuration using the NAS battery, the charge / discharge efficiency was 0.75, and the storage capacity was 244 MWh. Moreover, as conditions of this modification which performs heat storage, the steam power generation efficiency was set to 0.4, and the heat storage capacity was set to 2000 MWh. The configuration using the NAS battery and the equipment cost of this modification were both set to 10 billion yen.

  In this modification, the wind power generation amount was 96 GWh / year, the wind power transmission amount was 38 GWh / year, and the heat storage amount was 53 GWh / year. Since the steam power generation efficiency is 0.4, the steam dispatching power amount is stored heat amount × steam power generation efficiency = 53 GWh / year × 0.4≈21 GWh / year. The total amount of power transmitted by combining the amount of wind power transmitted and the amount of steam shipped is 38 GWh / year + 21 GWh / year = 59 GWh / year. The ratio of the total power transmission amount to the wind power generation amount is (59 GWh / year) / (96 GWh / year) × 100≈61%. Therefore, the operation rate is (59 GWh / year) / (10 MW × 24 hours × 365 days) ≈67%.

  On the other hand, in the configuration using the NAS battery, the wind power generation amount was 96 GWh / year, the wind power transmission amount was 38 GWh / year, and the power storage amount was 20 GWh / year. Since the charging / discharging efficiency is 0.75, the battery shipping power amount is: storage amount × charging / discharging efficiency = 20 GWh / year × 0.75 = 15 GWh / year. The total amount of power transmitted by combining the amount of wind power transmitted and the amount of battery dispatched power is 38 GWh / year + 15 GWh / year = 53 GWh / year. The ratio of the total power transmission amount to the wind power generation amount is (53 GWh / year) / (96 GWh / year) × 100≈55%. Therefore, the operation rate is (53 GWh / year) / (10 MW × 24 hours × 365 days) ≈60%.

  As described above, when the facility cost is set to 10 billion yen, in this modification, a facility capable of storing 53 GWh / year can be provided, whereas in a configuration using a NAS battery, only a facility capable of storing 20 GWh / year can be provided. Can not be provided. This is because the NAS battery is more expensive than the heat storage facility used in the present modification. As a result, the power supply facility according to the present modified example has a steam power generation efficiency (0.4) lower than the charge / discharge efficiency (0.75) of the NAS battery, but the configuration using the NAS battery. High availability can be achieved. In other words, the cost required to realize the same operating rate is lower in the power supply facility according to the present modification than in the configuration using the NAS battery. Therefore, according to this modification, it is possible to realize a power supply facility that is lower in cost than a configuration using a NAS battery.

  FIG. 10 is a diagram for explaining a power supply facility 300 according to still another embodiment of the present invention. In the power supply facility 200 shown in FIG. 10, the same or corresponding components as those in the embodiment shown in FIG.

  As shown in FIG. 10, the power supply facility 300 according to the present embodiment receives a supply of surplus power from the transformer 12 and heats the heat medium with the surplus power (the heating unit 14 in FIG. 1). In addition, a second heating unit 315 is further provided. The second heating unit 315 heats the heat medium supplied from the low temperature tank 18 using exhaustible energy such as coal and oil, and supplies the heated heat medium to the high temperature tank 16.

  When the second heating unit 315 cannot transmit the output of the desired transformer part even when the power generated by using the heating medium heated by the first heating part 314 is supplied to the transformer part 12, The heat medium is heated using depletion energy, and the heated heat medium is supplied to the high temperature tank 16. Thereby, the steam power generation unit 20 can perform steam power generation using the heat medium heated by the second heating unit 315 and transmit power from the power transformation unit 12 to the power transformation unit.

  According to the power supply facility 300 according to the present embodiment, by providing the additional second heating unit 315, as in the power supply facility 200 shown in FIG. Even if the system is not used, the desired transformer output can be maintained. The configuration for leveling the transmission power using the NAS battery is substantially impossible to maintain the power transformer output without being linked to other power generators. Therefore, since the power supply facility using the NAS battery depends on the power generation capacity of other power generation units, there is a problem that the degree of freedom of installation is low. In this respect, the power supply facility 300 according to the present embodiment has an advantage that the degree of freedom in installation is high because it is not affected by the power generation capacity of other power generation units.

  In the above, this invention was demonstrated based on the Example. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to the combination of each component and each processing process, and such modifications are also within the scope of the present invention. .

  DESCRIPTION OF SYMBOLS 10 Wind power generation part, 12 Transformer part, 14 Heating part, 16 High temperature tank, 18 Low temperature tank, 20 Steam power generation part, 22 Steam generator, 24 Steam turbine, 26 Condenser, 28 Generator, 60 Control part, 62 Detection part 64 prediction part, 66 request | requirement part, 68 thermal power generation part, 100,200,300 power supply equipment, 314 1st heating part, 315 2nd heating part.

Claims (8)

A first power generation unit that generates power using renewable energy;
A transformer that receives power from the first power generator and transmits a desired output, and outputs surplus power when the power supplied from the first generator exceeds the desired output. And
A first heating unit that receives supply of surplus power from the transformer and heats the heat medium with the surplus power;
A heat storage unit for storing the heat medium heated by the first heating unit;
When the power supplied from the first power generation unit falls below the desired output, the second power generation unit generates power using the heat medium stored in the heat storage unit and supplies the power to the transformer unit. When,
When the electric power generated using the heat medium heated by the first heating unit is supplied to the substation, the substation cannot transmit the desired output. A second heating unit that supplies the heated heat medium to the heat storage unit,
A power supply facility comprising:   The second power generation unit stores in the heat storage unit such that a total of the power supplied to the power transformation unit and the power supplied from the first power generation unit to the power transformation unit is the desired output. The power supply facility according to claim 1, wherein electric power is generated using the generated heat medium. A detection unit for detecting the amount of heat medium stored in the heat storage unit;
Based on the detected amount of heat medium, a predicting unit that predicts a time during which the transformer unit can transmit the desired output; and
A requesting unit that requests the third power generation unit connected to the power transformation unit to supply power so that the power transformation unit can transmit the desired output after the time predicted by the prediction unit;
The power supply facility according to claim 1, further comprising: The transformer section supplies power supplied from the first power generation section to the first heating section without transmitting power until a predetermined amount of heated heat medium is stored in the heat storage section. The power supply facility according to claim 3, wherein when a certain amount of heated heat medium is stored, transmission of supply power from the first power generation unit is started. A power supply facility that is applied to a substation that receives power from a first power generation unit that generates power using renewable energy and transmits a desired output,
A first heating unit that receives supply of surplus power output from the transformer when the power supplied from the first power generation unit exceeds the desired output, and heats the heat medium with the surplus power;
A heat storage unit for storing the heat medium heated by the first heating unit;
When the power supplied from the first power generation unit falls below the desired output, the second power generation unit generates power using the heat medium stored in the heat storage unit and supplies the power to the transformer unit. When,
When the electric power generated using the heat medium heated by the first heating unit is supplied to the substation, the substation cannot transmit the desired output. A second heating unit that supplies the heated heat medium to the heat storage unit,
A power supply facility comprising: A first power generation step of generating power in the first power generation unit using renewable energy;
A first supply step of supplying electric power generated by using renewable energy to the transformer section;
Transmitting a desired output from the transformer,
Outputting the surplus power from the transformer when the power supplied to the transformer in the first supply step exceeds the desired output;
A first heating step of heating the heat medium with surplus power from the transformer,
Storing the heated heat medium in the heat storage unit ;
A second power generation step of generating power in the second power generation unit using the stored heat medium when the power supplied to the power transformation unit in the first supply step falls below the desired output;
A second supply step of supplying the power generated in the second power generation step to the power transformation unit so that the power transformation unit can transmit the desired output;
When the electric power generated using the heat medium heated in the first heating step is supplied to the substation, the substation cannot transmit the desired output. And a second heating step of supplying the heated heat medium to the heat storage unit,
A power supply method comprising: Detecting the amount of stored heat medium;
Predicting a time during which the transformer can transmit the desired output based on the detected amount of heat medium;
Requesting the third power generation unit connected to the power transformation unit to supply power so that the power transformation unit can transmit the desired output after the predicted time has elapsed;
The power supply method according to claim 6 , further comprising: Using the supplied power from the first power generation unit for heating the heating medium without transmitting power from the transformer unit until a predetermined amount of heated heating medium is stored;
When the predetermined amount of heated heating medium is stored, the transformer starts to transmit power supplied from the first power generation unit;
The power supply method according to claim 7 , further comprising:

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