Electricity supply and demand management system, electricity supply and demand management method, electricity supply and demand management program, and recording medium

Abstract

This power supply-and-demand management system comprises: a first power generation facility; a second power generation facility that generates power using renewable energy; a substitution mechanism that performs substitution for output restrictions on power generated by the second power generation facility; and a server. The server comprises: an output restriction information acquisition unit that acquires output restriction information for the second power generation facility, including information on output restriction time slots for the second power generation facility and information on the quantity of output restriction; an output restriction substitutability information acquisition unit that acquires output restriction substitutability information, including information on time slots in which the substitution mechanism can perform substitution for power output restriction and information on the quantity of power for which output restriction substitution is possible; a determination unit that, on the basis of the output restriction information and the output restriction substitutability information, determines whether the restriction mechanism can perform output restriction substitution for the entire quantity of output restriction; and an output restriction substitution status control unit that controls, in accordance with the determination results by the determination unit, the status of substitution by the substitution mechanism for output restriction of power output from the second power generation facility.

Description

[Technical Field]

[0001] The present disclosure relates to an electric power supply and demand management system, an electric power supply and demand management method, an electric power supply and demand management program, and a recording medium. [Background technology]

[0002] A power generation system is known that charges a storage battery with surplus power generated by utilizing renewable energy such as solar power or wind power (see, for example, Patent Document 1). Also known is technology relating to a system that prepares multiple storage batteries and determines which storage battery to charge (see, for example, Patent Document 2, Patent Document 3, and Patent Document 4). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-172495 [Patent Document 2] Patent Publication No. 2021-87330 [Patent Document 3] Patent Publication No. 2021-87248 [Patent Document 4] Japanese Patent Application Laid-Open No. 2017-70159 Summary of the Invention [Problem to be solved by the invention]

[0004] Electricity generated by power plants such as thermal power plants is supplied to consumers such as homes, stores, and factories by electricity transmission and distribution companies that carry out electricity transmission and distribution businesses. Recently, electricity generated using renewable energy sources such as solar and wind power has been effectively utilized. The amount of electricity generated using renewable energy sources often varies depending on factors such as the season, time, and weather, making it difficult to control the amount of electricity generated. Currently, electricity is supplied to consumers by combining electricity generated by thermal power plants and other sources that can provide a stable amount of electricity with electricity generated using renewable energy.

[0005] In order to ensure a stable power supply, if the amount of electricity generated using renewable energy sources exceeds expectations and is likely to exceed the upper limit of the amount of electricity that can be transmitted through the power transmission and distribution network, it is necessary to curtail the output of electricity generated using renewable energy sources. This situation is undesirable, as it imposes restrictions on renewable energy generation even when it is possible. If efforts are made to effectively utilize renewable energy generation and facilities are built taking into account the maximum amount of electricity generated using renewable energy sources, expansion work will be required, which will place a heavy burden on power generation companies, retailers, and ultimately consumers. This could potentially worsen the profitability of power transmission and distribution companies.

[0006] Therefore, one of the objects of the present disclosure is to provide an electricity supply and demand management system that can efficiently utilize power generation using renewable energy. [Means for solving the problem]

[0007] The electricity supply and demand management system according to the present disclosure is an electricity supply and demand management system that manages the supply and demand of electricity within the electricity transmission and distribution area, and includes a first power generation facility that can stably supply electricity within the electricity transmission and distribution area, a second power generation facility that generates electricity using renewable energy and can supply electricity within the electricity transmission and distribution area, an alternative mechanism that substitutes for the output suppression of electricity generated by the second power generation facility, and a server that controls the supply and demand of electricity by the second power generation facility and the alternative mechanism. The server includes an output suppression information acquisition unit that acquires output suppression information for the second power generation facility, including information on output suppression time periods and information on the amount of output suppression to the second power generation facility; an output suppression substitutable information acquisition unit that acquires output suppression substitutable information, including information on time periods when the output suppression of power can be substituted by an alternative mechanism and information on the amount of power that can be substituted for the output suppression; a judgment unit that judges whether the entire amount of output suppression can be substituted for by the alternative mechanism based on the output suppression information acquired by the output suppression information acquisition unit and the output suppression substitutable information acquisition unit; and an output suppression substitutable status control unit that controls the substituting status of output suppression of power output from the second power generation facility by the alternative mechanism according to the judgment result by the judgment unit. [Effects of the Invention]

[0008] According to the above-described power supply and demand management system, power generation using renewable energy can be efficiently utilized. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram schematically illustrating an electricity supply and demand management system according to the first embodiment. [Figure 2] FIG. 2 is a block diagram showing a configuration of a part of the power supply and demand management system shown in FIG. [Figure 3] FIG. 3 is a flowchart showing a processing flow when managing the supply and demand of electricity in a power transmission and distribution area using the electricity supply and demand management system according to the first embodiment. [Figure 4] FIG. 4 is a diagram showing a state in which output suppression information is transmitted. [Figure 5]FIG. 5 is a diagram showing a state in which output suppression information is transmitted in the power supply and demand management system according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be described. An electric power supply and demand management system according to the present disclosure is an electric power supply and demand management system that includes a first power generation facility capable of stably supplying electric power within a power transmission and distribution area, a second power generation facility that generates electric power using renewable energy and can supply electric power within the power transmission and distribution area, an alternative mechanism that substitutes for output suppression of electric power generated by the second power generation facility, and a server that controls the supply and demand of electric power by the second power generation facility and the alternative mechanism, and manages the supply and demand of electric power within the power transmission and distribution area. The server includes an output suppression information acquisition unit that acquires output suppression information for the second power generation facility, including information on output suppression time periods and information on the amount of output suppression to the second power generation facility; an output suppression substitutable information acquisition unit that acquires output suppression substitutable information, including information on time periods when the output suppression of power can be substituted by an alternative mechanism and information on the amount of power that can be substituted for the output suppression; a judgment unit that judges whether the entire amount of output suppression can be substituted for by the alternative mechanism based on the output suppression information acquired by the output suppression information acquisition unit and the output suppression substitutable information acquisition unit; and an output suppression substitutable status control unit that controls the substituting status of output suppression of power output from the second power generation facility by the alternative mechanism according to the judgment result by the judgment unit.

[0011] In the power supply and demand management system disclosed herein, a server acquires output suppression information for a second power generation facility that uses renewable energy, including information on output suppression time periods and output suppression amounts for the second power generation facility. The server also acquires output suppression substitutability information for a substituting mechanism that substitutes for the output suppression of the power generated by the second power generation facility, including information on time periods during which the substituting mechanism can substitute for the output suppression and information on the amount of power that can be substituted for the output suppression. Based on the acquired output suppression information and the acquired output suppression substitutability information, the server determines whether the entire amount of output suppression can be substituted for by the substituting mechanism. The output suppression substituting status control unit controls the substituting status of the substituting mechanism for the output suppression of the power output from the second power generation facility based on the determination result, thereby enabling efficient use of the power generated by the second power generation facility by utilizing the substituting mechanism for output suppression. Therefore, this power supply and demand management system enables efficient use of power generated using renewable energy.

[0012] In the above-described power supply and demand management system, a plurality of second power generation facilities may be provided. If the determination unit determines that the entire amount of output suppression can be substituted by the alternative mechanism, the output suppression substitution status control unit may control to suppress the output of any of the plurality of second power generation facilities according to a predetermined priority. In this way, when a plurality of second power generation facilities are provided, the second power generation facilities can be used more effectively in line with the needs of the power transmission and distribution company.

[0013] In the above-described electricity supply and demand management system, the priority may be determined based on at least one of information on fees for using an alternative mechanism, location information of the second power generation facility, location information of the alternative mechanism, information on the voltage stability of the electricity transmission and distribution network, and information on the frequency stability of the electricity transmission and distribution network. This allows for more effective use of power generation using renewable energy based on the location information of the second power generation facility, etc.

[0014] In the above-described power supply and demand management system, a plurality of alternative mechanisms may be provided. If the determination unit determines that the entire amount of output suppression can be substituted by the alternative mechanisms, the output suppression alternative status control unit may select one of the plurality of alternative mechanisms and control it to substitute for the output suppression. In this way, when a plurality of alternative mechanisms are provided, it is possible to achieve effective use of the second power generation facility in line with the needs of the power transmission and distribution company.

[0015] In the above-described electricity supply and demand management system, the alternative mechanism may include at least one of a storage battery, a fuel cell, a natural refrigerant heat pump water heater, and an operating time adjustment mechanism for electrical equipment including production equipment. Such an alternative mechanism is an effective output destination for the electricity generated by the second power generation facility. Here, "adjusting the operating time of electrical equipment including production equipment" refers to, for example, adjusting the operating time of electrical equipment including production equipment so that it operates during the daytime instead of the late-night time slot when electricity rates are cheaper, if it is determined that the amount of electricity generated by renewable energy will be higher during the daytime.

[0016] In the above-described power supply and demand management system, if the alternative mechanism is a storage battery or a fuel cell, the output suppression substitution possibility information acquisition unit may derive the amount of power that can be substituted for output suppression using at least one of the operation pattern, charging rate, temperature, degree of deterioration, and response record. In this way, efficient output suppression substitution can be performed according to the usage status and environment of the alternative mechanism.

[0017] In the above-described power supply and demand management system, the output suppression information acquisition unit may acquire the output suppression information by having a server receive the output suppression information transmitted from an external source. In this way, accurate and timely output suppression information transmitted from an external source can be effectively utilized to effectively utilize power generation using renewable energy.

[0018] In the above-described power supply and demand management system, the output curtailment information acquisition unit may acquire the output curtailment information by deriving the output curtailment information using the upper limit of capacity in the power transmission and distribution area, the predicted value of the power generation amount in the second power generation facility, and the predicted value of the power demand amount in the power transmission and distribution area. In this way, the derived output curtailment information can be used to control the alternative state of output curtailment without obtaining the output curtailment information from an external source.

[0019] In the above-described power supply and demand management system, the output suppression substitution status control unit may use an alternative mechanism located outside the power transmission and distribution area to control the substitution status of output suppression of the power output from the second power generation facility if the determination unit determines that the entire amount of output suppression can be substituted by the alternative mechanism. In this way, it is possible to effectively utilize renewable energy by using facilities outside the power transmission and distribution area.

[0020] The present disclosure provides an electric power supply and demand management method for use in an electric power supply and demand management system that manages the supply and demand of electric power within a transmission and distribution area, the system including a first power generation facility capable of stably supplying electric power within a transmission and distribution area, a second power generation facility that generates electric power using renewable energy and can supply electric power within the transmission and distribution area, a substitution mechanism that substitutes for output suppression of electric power generated by the second power generation facility, and a server that controls the supply and demand of electric power by the second power generation facility and the substitution mechanism. The electric power supply and demand management method includes the steps of: acquiring output suppression information for the second power generation facility, the output suppression information including information on time periods during which the second power generation facility can be substituted for the output suppression by the substitution mechanism, and information on the amount of electric power that can be substituted for the output suppression, determining whether the entire amount of output suppression can be substituted for by the substitution mechanism based on the acquired output suppression information and the acquired output suppression substitution information, and controlling a substitution status of the output suppression of electric power output from the second power generation facility by the substitution mechanism based on the determination result.

[0021] According to such a power supply and demand management method, power generation using renewable energy can be efficiently utilized.

[0022] The program for an electric power supply and demand management system according to the present disclosure includes a first power generation facility capable of stably supplying electric power within a power transmission and distribution area, a second power generation facility capable of generating electric power using renewable energy and supplying electric power within the power transmission and distribution area, an alternative mechanism that substitutes for the output suppression of electric power generated by the second power generation facility, and a server that controls the supply and demand of electric power by the second power generation facility and the alternative mechanism, and manages the supply and demand of electric power within the power transmission and distribution area. The program includes an output suppression information acquisition unit that acquires output suppression information for the second power generation facility, including information on output suppression time periods and information on the amount of output suppression for the second power generation facility, ... and an output suppression information acquisition unit that acquires output suppression information for the second power generation facility, including information on output suppression time periods and the amount of output suppression for the second power generation facility. and an output suppression substitution status control unit that controls the substitution status of the output suppression of the power output from the second power generation facility by the substitution mechanism according to the determination result of the determination unit.

[0023] According to such a program for an electric power supply and demand management system, it is possible to efficiently utilize power generation using renewable energy.

[0024] A storage medium according to the present disclosure is a computer-readable recording medium used in an electricity supply and demand management system that manages the supply and demand of electricity within a transmission and distribution area, the storage medium comprising: a first power generation facility capable of stably supplying electricity within a transmission and distribution area; a second power generation facility that generates electricity using renewable energy and is capable of supplying electricity within the transmission and distribution area; an alternative mechanism that substitutes for output suppression of electricity generated by the second power generation facility; and a server that controls the supply and demand of electricity by the second power generation facility and the alternative mechanism, the storage medium comprising: an output suppression information acquisition unit that acquires output suppression information for the second power generation facility, including information on output suppression time periods and information on the amount of output suppression for the second power generation facility; a determination unit that determines whether the entire amount of output suppression can be substituted by the substitution mechanism based on the output suppression information obtained by the output suppression information obtaining unit and the output suppression substitutable information obtained by the output suppression substitutable information obtaining unit; and an output suppression substitutable status control unit that controls the substitution status of the output suppression of electricity output from the second power generation facility by the substitution mechanism based on the determination result by the determination unit.

[0025] Such a storage medium allows for efficient use of power generated using renewable energy.

[0026] [Details of the embodiment of the present invention] Next, an embodiment of a power supply and demand management system including the power supply and demand management system of the present disclosure will be described with reference to the drawings. In the following drawings, the same or corresponding parts are designated by the same reference numerals, and description thereof will not be repeated.

[0027] (Embodiment 1) A configuration of an electricity supply and demand management system according to a first embodiment of the present disclosure will be described. Fig. 1 is a diagram schematically illustrating the electricity supply and demand management system according to the first embodiment. Fig. 2 is a block diagram illustrating a configuration of a part of the electricity supply and demand management system shown in Fig. 1.

[0028] 1 and 2, a power supply and demand management system 10a in the first embodiment manages the supply and demand of power within a power transmission and distribution area 11a under the jurisdiction of a power transmission and distribution business operator. The power supply and demand management system 10a includes a server 21a that manages the supply and demand of power for power supply and demand facilities located within the power transmission and distribution area 11a, specifically, renewable energy power generation facilities 16a, 16b, and 16c, described below, stores 17a, houses 18a, and storage batteries 19a. Examples of storage batteries 19a include lithium-ion batteries and NAS (sodium-sulfur) batteries. NAS batteries, which are suitable for industrial use, may be used as storage batteries 19a because of their large capacity for efficient replacement and their ability to be efficiently charged and discharged over long periods of time.

[0029] Electric power is transmitted to the power transmission / distribution area 11a from a power plant 12a, which is a first power generation facility located outside the power transmission / distribution area 11a, via multiple transmission lines 13a, 13b, 13c, and 13d, and via multiple substations 14a and 14b, to a distribution substation 14c. The power plant 12a is, for example, a thermal power plant, and is a power generation facility that can stably supply a constant amount of power to the power transmission / distribution area 11a. Electric power transformed by the distribution substation 14c is supplied to the power transmission / distribution area 11a via substations 14a and 14b.

[0030] Within the power transmission / distribution area 11a, there are located stores 17a and houses 18a that consume power. The power transmitted within the power transmission / distribution area 11a is distributed to the stores 17a and houses 18a via power distribution lines 15e and 15f, respectively.

[0031] Additionally, within the power transmission and distribution area 11a, renewable energy power generation facilities 16a, 16b, and 16c, which are second power generation facilities that utilize renewable energy, are disposed. In this embodiment, a plurality of second power generation facilities are provided. The renewable energy power generation facility 16a is a second power generation facility that generates power using sunlight, which is renewable energy, and is capable of supplying electrodes within the power transmission and distribution area 11a. The amount of power generated by the renewable energy power generation facility 16a is affected by the hours of sunshine, weather, and the like. In other words, the renewable energy power generation facility 16a is a power generation facility with an unstable power supply. The renewable energy power generation facilities 16b and 16c have the same configuration as the renewable energy power generation facility 16a. The electricity generated by renewable energy power generation facility 16a, renewable energy power generation facility 16b, and renewable energy power generation facility 16c is distributed to store 17a and house 18a via distribution line 15b, distribution line 15c, and distribution line 15d, respectively. This distribution is controlled, for example, by management device 31a owned by the electricity transmission and distribution company. Distribution line 15b, distribution line 15c, distribution line 15d, distribution line 15e, distribution line 15f, and distribution line 15g (described later) are each connected to distribution line 15a, which is connected to distribution substation 14c. Note that renewable energy power generation facility 16a is not limited to power generation using solar power, and may be a wind power generation facility that uses wind power as renewable energy, or a biomass power generation facility that uses biomass as renewable energy.

[0032] Within the power transmission and distribution area 11a, alternative facilities such as a storage battery 19a for storing power are installed as an alternative mechanism for suppressing the output of power generated by the second power generation facilities, namely, renewable energy power generation facility 16a, renewable energy power generation facility 16b, and renewable energy power generation facility 16c. The storage battery 19a is connected to a power distribution line 15g and can store the power distributed from the power distribution line 15g according to the storage capacity of the storage battery 19a. The power stored in the storage battery 19a is supplied to a store 17a and a house 18a under the control of a management device 31a owned by the power transmission and distribution company.

[0033] Here, a brief description of the configuration of the management device 31a will be given. The management device 31a is communicatively connected to the renewable energy power generation facilities 16a, 16b, and 16c, and the storage battery 19a via a network 20. The network 20 may be the Internet or an internal network in a closed environment established for the power transmission and distribution area 11a, such as an intranet. The network 20 may be wired or wireless. The management device 31a includes a management device network interface unit 32 for connecting to the network 20, a management device control unit 33 for controlling the management device 31a itself, and a management device hard disk 34 as a storage unit for storing data. A display for displaying data, a keyboard for inputting data, and a mouse are connected to the management device 31a, which serve as interfaces for the management device 31a.

[0034] Next, the configuration of server 21a will be described. Server 21a controls the supply and demand of electricity within power transmission and distribution area 11a. Specifically, server 21a controls the output of renewable energy power generation facilities 16a, 16b, and 16c, which are second power generation facilities, and controls output suppression by storage battery 19a, which is an alternative mechanism. Like management device 31a, server 21a is communicatively connected to renewable energy power generation facilities 16a, 16b, and 16c, and storage battery 19a via network 20. Server 21a includes a server network interface unit 22 for connecting to network 20, a server control unit 23 for controlling server 21a itself, and a server hard disk 24 as a storage unit for storing data. A display for displaying data, a keyboard for inputting data, and a mouse are connected to server 21a, which serve as interfaces for server 21a.

[0035] Next, a specific configuration of the server control unit 23 will be described. The server control unit 23 includes an output suppression information acquisition unit 41, an output suppression substitutability information acquisition unit 42, a determination unit 43, and an output suppression substitutability status control unit 44. The output suppression information acquisition unit 41 acquires output suppression information for the second power generation facilities, which are the renewable energy power generation facilities 16a, 16b, and 16c, including information on output suppression time periods and output suppression amounts. The output suppression substitutability information acquisition unit 42 acquires output suppression substitutability information, including information on time periods during which the storage battery 19a, which is an alternative mechanism, can substitute for the output suppression of power, and information on the amount of power that can substitute for the output suppression. The determination unit 43 determines whether the entire amount of output suppression can be substituted for by the storage battery 19a, which is an alternative mechanism, based on the output suppression information acquired by the output suppression information acquisition unit 41 and the output suppression substitutability information acquired by the output suppression substitutability information acquisition unit 42. The output suppression substitution status control unit 44 controls the substitution status of the output suppression of the power output from the second power generation facility by the storage battery 19a, which is the substitution mechanism, according to the determination result by the determination unit 43. The configuration of each unit will be described in detail later.

[0036] The power supply and demand management system 10a combines stable power supplied from a power plant 12a, such as a thermal power plant, with power generated by renewable energy power generation facilities 16a, 16b, and 16c, and distributes the combined power to stores and homes consuming the power via a power transmission and distribution network. For example, if the amount of power generated by renewable energy power generation facilities 16a, 16b, and 16c increases more than expected due to longer sunshine hours or other factors, and the power output from renewable energy power generation facilities 16a, 16c is likely to exceed the upper limit of the power transmission capacity of the power transmission and distribution network. However, the power supply and demand management system 10a of the present disclosure provides an alternative to output suppression. Therefore, output suppression at renewable energy power generation facilities 16a, 16c, can be reduced. As a result, renewable energy can be effectively utilized. That is, the power supply and demand management system 10a of the present disclosure absorbs and effectively utilizes surplus power generated by renewable energy power generation facilities 16a, 16c, which previously required output suppression. This is described below.

[0037] Next, a case where the supply and demand of electricity in the electricity transmission and distribution area 11a is managed using the electricity supply and demand management system 10a will be described. Fig. 3 is a flowchart showing a processing flow when the supply and demand of electricity in the electricity transmission and distribution area 11a is managed using the electricity supply and demand management system 10a in the first embodiment.

[0038] 3, server 21a manages the balance of supply and demand for electricity within power transmission and distribution area 11a. In this case, server 21a manages the balance by monitoring in real time the output states of renewable energy power generation facilities 16a, 16b, and 16c, which are second power generation facilities in power transmission and distribution area 11a, the power consumption states in stores 17a and houses 18a, the power storage state in storage battery 19a, and the like.

[0039] Here, for example, if the output, i.e., the amount of power generated by the renewable energy power generation facilities 16a and 16b increases due to a prolonged period of sunshine or the like and reaches the upper limit of the power capacity within the power transmission and distribution area 11a, a management device 31a that manages the renewable energy power generation facilities 16a and 16b transmits output suppression information to the renewable energy power generation facilities 16a and 16b. FIG. 4 is a diagram showing a state in which the output suppression information has been transmitted. In this case, as shown in FIG. 4, an output suppression signal is transmitted from the management device 31a, which is located outside the power transmission and distribution area 11a, to the renewable energy power generation facilities 16a and 16b. Then, the output suppression signals are transmitted from the renewable energy power generation facilities 16a and 16b to the server 21a. Then, the output suppression information acquisition unit 41 acquires output suppression signals from the renewable energy power generation facilities 16a and 16b (in FIG. 3, YES in step S11; hereinafter, "step" will be omitted). That is, the output suppression information acquisition unit 41 acquires output suppression information by having the server 21a receive output suppression information transmitted from outside. In this case, the output suppression information acquisition unit 41 acquires the output suppression information by receiving the output suppression signal using the network 20. The output suppression information includes information on the output suppression time period and information on the output suppression amount. That is, the output suppression information acquisition unit 41 acquires output suppression information including information on the output suppression time period and information on the output suppression amount.

[0040] Thereafter, the output suppression substitutability information acquisition unit 42 acquires output suppression substitutability information from the storage battery 19a, which is the substituting mechanism (S12). The output suppression substitutability information from the storage battery 19a includes information on time periods when the storage battery 19a can substitute for the power output suppression and information on the amount of power that can substitute for the output suppression. That is, the output suppression substitutability information acquisition unit 42 acquires output suppression substitutability information including information on time periods when the storage battery 19a can store power and the amount of power that can be stored. In this case, the server 21a acquires the power storage information from the storage battery 19a in real time, and therefore acquires the output suppression substitutability information from this power storage information.

[0041] Next, the determination unit 43 determines whether the entire amount of output suppression can be substituted by the substitution mechanism based on the output suppression information acquired by the output suppression information acquisition unit 41 and the output suppression substitutability information acquired by the output suppression substitutability information acquisition unit 42 (S13). That is, it determines whether the amount of output suppression during the output suppression time period when output suppression is issued by the renewable energy power generation facility 16a and the renewable energy power generation facility 16b is an amount that can be substituted by the storage battery 19a during the output suppression time period.

[0042] Thereafter, the output suppression substitution status control unit 44 controls the substitution status of the output suppression of the power output from the renewable energy power generation facility 16a and the renewable energy power generation facility 16b, which are the second power generation facilities, by the substitution mechanism, according to the determination result by the determination unit 43. Specifically, the following process is performed. If the determination unit 43 does not determine that the entire amount of output suppression can be substituted during the time period of output suppression (NO in S13), one of the multiple second power generation facilities is selected according to a predetermined priority (S14). Specifically, for example, one of the renewable energy power generation facility 16a and the renewable energy power generation facility 16b is selected.

[0043] On the other hand, if it is determined that the entire amount of output suppression can be substituted during the time period of output suppression (YES in S13), the output suppression substitution status control unit 44 determines whether the amount of output suppression is equal to or less than the output suppression substitution amount (S15). This process is also performed when one of the second power generation facilities is selected in S14.

[0044] If it is determined that the output suppression amount is equal to or less than the substitutable amount (YES in S15), an alternative mechanism is selected (S16). Although not shown in the figures in this embodiment, if multiple storage batteries 19a are provided, one of the storage batteries 19a is selected.

[0045] Thereafter, after notifying whether or not substitution is possible (S17), output control of the substitution mechanism is performed (S18). That is, control is performed so that the power output by the renewable energy power generation facility 16a and the renewable energy power generation facility 16b is stored in the storage battery 19a. This is performed until the output suppression time ends (S19). This control is performed while acquiring data in real time so that the amount of output suppression and the amount of output suppression substitution are equal. Note that confirmation and proof that such substitution of output suppression by the substitution mechanism is being reliably performed may be managed by tagging using blockchain.

[0046] In the power supply and demand management system 10a of the present disclosure, the server 21a acquires output suppression information for the second power generation facility, such as the renewable energy power generation facility 16a, which generates power using renewable energy. The information includes information on the time periods during which the second power generation facility is subject to output suppression and the amount of output suppression. The server 21a acquires output suppression substitutability information for the storage battery 19a, which serves as a substituting mechanism for substituting the output suppression of power generated by the second power generation facility. The output suppression substitutability information includes information on the time periods during which the substituting mechanism can substitute for the output suppression of power generated by the second power generation facility and the amount of power that can be substituted for the output suppression. Based on the acquired output suppression information and the acquired output suppression substitutability information, the server 21a determines whether the entire amount of output suppression can be substituted by the substituting mechanism. The output suppression substitutability control unit 44 controls the substituting mechanism's substitution status for the output suppression of power output from the second power generation facility based on the determination result. Therefore, the power supply and demand management system 10a can efficiently utilize power generated by the second power generation facility by utilizing the substituting mechanism for output suppression.

[0047] That is, in the power supply and demand management system 10a of the present disclosure, when output of power generation using renewable energy is limited, the second power generation facility or an alternative device is used to absorb surplus power.

[0048] According to the above embodiment, a plurality of second power generation facilities, such as renewable energy power generation facilities 16a, are provided. If the determination unit 43 does not determine that the entire amount of output suppression can be substituted by the substitution mechanism, the output suppression substitution status control unit 44 controls the output of one of the plurality of second power generation facilities to substitute according to a predetermined priority. Therefore, when a plurality of second power generation facilities are provided, it is possible to effectively utilize the second power generation facilities in accordance with the needs of the power transmission and distribution company.

[0049] According to the above embodiment, the output suppression information acquisition unit 41 acquires the output suppression information by having the server 21a receive the output suppression information transmitted from the outside. Therefore, accurate and timely output suppression information transmitted from the outside can be effectively utilized to effectively utilize power generation using renewable energy.

[0050] In the above embodiment, the priority may be determined based on at least one of information on the fee for using the alternative mechanism, location information of the second power generation facility, location information of the alternative mechanism, information on the voltage stability of the power transmission and distribution network, and information on the frequency stability of the power transmission and distribution network. In this way, power generation using renewable energy can be more effectively utilized based on the location information of the second power generation facility, etc.

[0051] Furthermore, in the above embodiment, a plurality of alternative mechanisms may be provided. If the determination unit 43 determines that the entire amount of output suppression can be substituted by an alternative mechanism, the output suppression alternative status control unit 44 may select one of the plurality of alternative mechanisms and control it to substitute for the output suppression. In this way, when a plurality of alternative mechanisms are provided, it is possible to achieve effective use of the second power generation facility in line with the needs of the power transmission and distribution company.

[0052] In the above embodiment, the alternative mechanism may include at least one of a storage battery, a fuel cell, a natural refrigerant heat pump water heater, and an operating time adjustment mechanism for electrical equipment, including production equipment. Such an alternative mechanism is a valid output destination for the power generated by the second power generation facility. Here, output commands are distributed based on the required output suppression amount, taking into account, for example, the state (SOC (State of Charge), temperature, degree of deterioration, etc.) of the selected alternative facility, which is the alternative mechanism. The response records of each alternative facility are aggregated in the system, and any discrepancies relative to the required output suppression amount are monitored. If any discrepancies occur, the output command value may be changed or the alternative facility to which the command is to be sent may be reselected. During control by the system, actual data from the power transmission and distribution facilities may be acquired, and the required output suppression amount may be recalculated based on the limitations of the power transmission and distribution facilities.

[0053] Furthermore, in the above embodiment, if the determination unit 43 does not determine that the entire amount of output suppression can be substituted by an alternative mechanism, the output suppression alternative status control unit 44 may use an alternative mechanism located outside the power transmission and distribution area to control the alternative status of output suppression of the power output from the second power generation facility. In this way, it is possible to effectively utilize renewable energy by using facilities outside the power transmission and distribution area.

[0054] The output of power stored in the storage battery will now be described. The control of the output of power stored in the storage battery is carried out as follows. First, the capacity limit value of the power transmission / distribution area is confirmed, and then it is determined whether or not a limit is imposed on the output. If no limit is imposed, output begins. On the other hand, if a limit is imposed, it is determined whether or not there is power interchange in another power transmission / distribution area. If there is power interchange, a prediction of power consumption in the transmission / distribution area of ​​the interchange destination is made and the desired interchange amount is confirmed. After that, it is determined whether or not the power can be consumed within the limit, and if not, it is determined whether or not to store the power in a storage resource such as a storage battery in another power transmission / distribution area. If power is to be stored, the amount of storage is calculated and an instruction is issued to output to the storage resource. After that, output from storage battery a begins within the limit value. If it is determined that power can be consumed within the limit value or even if power is not to be stored in the storage resource, output begins. In this way, the output of power stored in storage battery 19a is controlled.

[0055] (Embodiment 2) Another embodiment, a second embodiment, will now be described. FIG. 5 is a diagram showing a state in which output suppression information is transmitted in a power supply and demand management system in the second embodiment. The power supply and demand management system in the second embodiment basically has the same configuration as in the first embodiment, and achieves the same effects. However, the power supply management system in the second embodiment differs from the first embodiment in the destination of the output suppression information transmitted from the management device 31a and the subsequent processing flow.

[0056] Referring to FIG. 5, in the power supply and demand management system 10b according to the second embodiment, for example, when the upper limit of the power capacity within the power transmission and distribution area 11a is reached, an output suppression signal is not transmitted from the management device 31a to the renewable energy power generation facilities 16a and 16b as in the first embodiment, but rather the management device 31a directly transmits the output suppression signal to the server 21a as indicated by arrow D1. This output suppression signal includes output suppression information. In this manner, the server 21a acquires the output suppression information indicated in S11 from the management device 31a (S12). In this case, the output suppression information includes, for example, information on the time period during which output is suppressed and the amount of suppression of output.

[0057] Next, the server 21a grasps the acquired output suppression information and the status of the alternative mechanism, specifically, for example, the storage battery 19a, and responds to the management device 31a with output substitution availability information, including the time periods and amount of substitution available, as indicated by arrow D2. Thereafter, the management device 31a transmits an output suppression signal to the renewable energy power generation facilities 16a and 16b based on the response information. The management device 31a also requests the server 21a to substitute for the output suppression. Depending on the content of the request, the server 21a performs subsequent processing. Such a configuration may be adopted.

[0058] Although not shown, the server 21a may also acquire output suppression information from the renewable energy power generation facilities 16a, etc., in order to grasp the output suppression status of the renewable energy power generation facilities 16a, etc. The output suppression information may also include the target power plant and the above-mentioned priority. The priority of the facility that provides alternative output may be determined by the management device 31a, or may be determined by the server 21a in the same manner as in the other embodiments, depending on location information, frequency information, and price information.

[0059] (Other embodiments) In the above embodiment, the output curtailment information acquisition unit acquires the output curtailment information by having the server receive the output curtailment information transmitted from an external source. However, this is not limited to this. That is, the output curtailment information acquisition unit may acquire the output curtailment information by deriving the output curtailment information using the upper limit of the capacity in the power transmission / distribution area, the predicted power generation amount of the second power generation facility, and the predicted power demand amount in the power transmission / distribution area. Specifically, if the difference obtained by subtracting the predicted power demand amount in the power transmission / distribution area from the predicted power generation amount of the second power generation facility is greater than the upper limit of the capacity in the power transmission / distribution area, it is determined that the output request information has been acquired. In this way, the derived output curtailment information can be used to control the alternative state of output curtailment without obtaining the output curtailment information from an external source.

[0060] The present disclosure provides an electric power supply and demand management method for use in an electric power supply and demand management system that manages the supply and demand of electric power within a transmission and distribution area, the system including a first power generation facility capable of stably supplying electric power within a transmission and distribution area, a second power generation facility that generates electric power using renewable energy and can supply electric power within the transmission and distribution area, a substitution mechanism that substitutes for output suppression of electric power generated by the second power generation facility, and a server that controls the supply and demand of electric power by the second power generation facility and the substitution mechanism. The electric power supply and demand management method includes the steps of: acquiring output suppression information for the second power generation facility, the output suppression information including information on time periods during which the second power generation facility can be substituted for the output suppression by the substitution mechanism, and information on the amount of electric power that can be substituted for the output suppression, determining whether the entire amount of output suppression can be substituted for by the substitution mechanism based on the acquired output suppression information and the acquired output suppression substitution information, and controlling a substitution status of the output suppression of electric power output from the second power generation facility by the substitution mechanism based on the determination result.

[0061] According to such a power supply and demand management method, power generation using renewable energy can be efficiently utilized.

[0062] The program for an electric power supply and demand management system according to the present disclosure is an electric power supply and demand management system that manages the supply and demand of electric power within a power transmission and distribution area, the program comprising: a first power generation facility capable of stably supplying electric power within a power transmission and distribution area; a second power generation facility that generates electric power using renewable energy and is capable of supplying electric power within the power transmission and distribution area; an alternative mechanism that substitutes for output suppression of electric power generated by the second power generation facility; and a server that controls the supply and demand of electric power by the second power generation facility and the alternative mechanism, the program comprising: an output suppression unit that acquires output suppression information for the second power generation facility, the output suppression information including information on a time period during which output is suppressed and information on an amount of output suppression for the second power generation facility; The program is for an electricity supply and demand management system that functions as an information acquisition unit, an output suppression substitution possibility information acquisition unit that acquires output suppression substitution possibility information including information on time periods when substitution of power output suppression by an alternative mechanism is possible and information on the amount of electricity that can be substituted for output suppression, a judgment unit that judges whether the entire amount of output suppression can be substituted for output suppression by an alternative mechanism based on the output suppression information acquired by the output suppression information acquisition unit and the output suppression substitution possibility information acquired by the output suppression substitution possibility information acquisition unit, and an output suppression substitution situation control unit that controls the substitution situation of output suppression of electricity output from the second power generation facility by the alternative mechanism based on the judgment result by the judgment unit.

[0063] According to such a program for an electric power supply and demand management system, it is possible to efficiently utilize power generation using renewable energy.

[0064] A storage medium according to the present disclosure is a computer-readable recording medium used in an electricity supply and demand management system that manages the supply and demand of electricity within a transmission and distribution area, the storage medium comprising: a first power generation facility capable of stably supplying electricity within a transmission and distribution area; a second power generation facility that generates electricity using renewable energy and is capable of supplying electricity within the transmission and distribution area; an alternative mechanism that substitutes for output suppression of electricity generated by the second power generation facility; and a server that controls the supply and demand of electricity by the second power generation facility and the alternative mechanism, the storage medium comprising: an output suppression information acquisition unit that acquires output suppression information for the second power generation facility, including information on output suppression time periods and information on the amount of output suppression for the second power generation facility; a determination unit that determines whether the entire amount of output suppression can be substituted by the substitution mechanism based on the output suppression information obtained by the output suppression information obtaining unit and the output suppression substitutable information obtained by the output suppression substitutable information obtaining unit; and an output suppression substitutable status control unit that controls the substitution status of the output suppression of electricity output from the second power generation facility by the substitution mechanism based on the determination result by the determination unit.

[0065] Such a storage medium allows for efficient use of power generated using renewable energy.

[0066] It should be understood that the embodiments disclosed herein are illustrative in all respects and are not limiting in any respect. The scope of the present invention is defined not by the above meaning but by the scope of the claims, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0067] 10a, 10b power supply and demand management system, 11a power transmission and distribution area, 12a power plant, 13a, 13b, 13c, 13d, 13e power transmission lines, 14a, 14b substations, 14c distribution substations, 15a, 15b, 15c, 15d, 15e, 15f, 15g power distribution lines, 16a, 16b, 16c renewable energy power generation facilities, 17a store, 18a house, 19a storage battery, 20 network, 21a server, 22 server network interface unit, 23 server control unit, 24 server hard disk, 31a management device, 32 management device network interface unit, 33 management device control unit, 34 management device hard disk, 41 output suppression information acquisition unit, 42 output suppression substitution possibility information acquisition unit, 43 judgment unit, 44 output suppression substitution status control unit.

Claims

1. An electric power supply and demand management system that manages the supply and demand of electric power within the electric power transmission and distribution area, comprising: a first power generation facility capable of stably supplying electric power within a power transmission and distribution area; a second power generation facility that generates electric power using renewable energy and is capable of supplying electric power within the power transmission and distribution area; an alternative mechanism that substitutes for output suppression of electric power generated by the second power generation facility; and a server that controls the supply and demand of electric power by the second power generation facility and the alternative mechanism, The server an output suppression information acquisition unit that acquires output suppression information for the second power generation facility, the output suppression information including information on a time period during which output is suppressed and information on an amount of output suppression for the second power generation facility; an output suppression substitutable information acquisition unit that acquires output suppression substitutable information including information on time periods when the substituting mechanism can substitute for the output suppression of power and information on the amount of power that can be substituted for the output suppression; a determination unit that determines whether or not the entire amount of output suppression can be substituted for by the substitution mechanism based on the output suppression information acquired by the output suppression information acquisition unit and the substitutability information of the output suppression acquired by the output suppression substitutability information acquisition unit; an output suppression substitution status control unit that controls a substitution status of output suppression of the electric power output from the second power generation facility by the substitution mechanism according to a determination result by the determination unit, The second power generation facility is provided in plurality, the output suppression substitution status control unit controls to suppress output of any one of the plurality of second power generation facilities in accordance with a predetermined priority if the determination unit does not determine that the entire amount of output suppression can be substituted by the substitution mechanism; An electricity supply and demand management system in which the priority is determined based on at least one of information on fees for using the alternative mechanism, location information of the second power generation facility, location information of the alternative mechanism, information on the stability of the voltage of the electricity transmission and distribution network, and information on the stability of the frequency of the electricity transmission and distribution network.

2. An electric power supply and demand management system that manages the supply and demand of electric power within the electric power transmission and distribution area, comprising: a first power generation facility capable of stably supplying electric power within a power transmission and distribution area; a second power generation facility that generates electric power using renewable energy and is capable of supplying electric power within the power transmission and distribution area; an alternative mechanism that substitutes for output suppression of electric power generated by the second power generation facility; and a server that controls the supply and demand of electric power by the second power generation facility and the alternative mechanism, The server an output suppression information acquisition unit that acquires output suppression information for the second power generation facility, the output suppression information including information on a time period during which output is suppressed and information on an amount of output suppression for the second power generation facility; an output suppression substitutable information acquisition unit that acquires output suppression substitutable information including information on time periods when the substituting mechanism can substitute for the output suppression of power and information on the amount of power that can be substituted for the output suppression; a determination unit that determines whether or not the entire amount of output suppression can be substituted for by the substitution mechanism based on the output suppression information acquired by the output suppression information acquisition unit and the substitutability information of the output suppression acquired by the output suppression substitutability information acquisition unit; an output suppression substitution status control unit that controls a substitution status of output suppression of the electric power output from the second power generation facility by the substitution mechanism according to a determination result by the determination unit, an upper limit value of capacity in the power transmission and distribution area, a predicted value of the power generation amount in the second power generation facility, and a predicted value of the power demand amount in the power transmission and distribution area, thereby deriving the output suppression information and acquiring the output suppression information.

3. a plurality of the alternative mechanisms are provided, 3. The power supply and demand management system according to claim 1, wherein the output suppression substitution status control unit selects one of the plurality of alternative mechanisms to substitute for the output suppression if the determination unit determines that the entire amount of the output suppression amount can be substituted for the output suppression by the alternative mechanism.

4. 3. The power supply and demand management system according to claim 1, wherein the alternative mechanism includes at least one of a storage battery, a fuel cell, a natural refrigerant heat pump water heater, and an adjustment of operating hours of electrical equipment including production equipment.

5. 5. The power supply and demand management system of claim 4, wherein the output suppression substitution information acquisition unit derives the amount of power that can be substituted for output suppression using at least one of an operation pattern, a charging rate, a temperature, a degree of deterioration, and response history if the substitution mechanism is a storage battery or a fuel cell.

6. The power supply and demand management system according to claim 1 , wherein the output suppression information acquisition unit acquires the output suppression information by the server receiving the output suppression information transmitted from an external source.

7. An electric power supply and demand management method for use in an electric power supply and demand management system that manages the supply and demand of electric power within a power transmission and distribution area, the electric power supply and demand management system comprising: a first power generation facility capable of stably supplying electric power within a power transmission and distribution area; a second power generation facility that generates electric power using renewable energy and is capable of supplying electric power within the power transmission and distribution area; an alternative mechanism that takes over output suppression of electric power generated by the second power generation facility; and a server that controls the supply and demand of electric power by the second power generation facility and the alternative mechanism, acquiring output suppression information for the second power generation facility, the information including information on a time period during which output is suppressed and information on an amount of output suppression for the second power generation facility; acquiring output suppression substitutable information including information on time periods when the substituting mechanism can substitute for the output suppression of power and information on the amount of power that can be substituted for the output suppression; determining whether or not the entire amount of output suppression can be substituted by the substitution mechanism based on the acquired output suppression information and the acquired output suppression substitutability information; and controlling an alternative state of the output suppression of the electric power output from the second power generation facility by the alternative mechanism according to a result of the determination, The second power generation facility is provided in plurality, the step of controlling the substitution status of the power output suppression includes controlling the output of any one of the plurality of second power generation facilities in accordance with a predetermined priority if it is not determined in the step of determining whether substitution of the output suppression is possible that the entire amount of the output suppression can be substituted by the substitution mechanism; An electricity supply and demand management method in which the priority is determined based on at least one of information on fees for using the alternative mechanism, location information of the second power generation facility, location information of the alternative mechanism, information on the stability of the voltage of the transmission and distribution network, and information on the stability of the frequency of the transmission and distribution network.

8. An electric power supply and demand management method for use in an electric power supply and demand management system that manages the supply and demand of electric power within a power transmission and distribution area, the electric power supply and demand management system comprising: a first power generation facility capable of stably supplying electric power within a power transmission and distribution area; a second power generation facility that generates electric power using renewable energy and is capable of supplying electric power within the power transmission and distribution area; an alternative mechanism that takes over output suppression of electric power generated by the second power generation facility; and a server that controls the supply and demand of electric power by the second power generation facility and the alternative mechanism, acquiring output suppression information for the second power generation facility, the information including information on a time period during which output is suppressed and information on an amount of output suppression for the second power generation facility; acquiring output suppression substitutable information including information on time periods when the substituting mechanism can substitute for the output suppression of power and information on the amount of power that can be substituted for the output suppression; determining whether or not the entire amount of output suppression can be substituted by the substitution mechanism based on the acquired output suppression information and the acquired output suppression substitutability information; and controlling an alternative state of the output suppression of the electric power output from the second power generation facility by the alternative mechanism according to a result of the determination, A power supply and demand management method, in which the step of acquiring the output suppression information acquires the output suppression information by deriving the output suppression information using an upper capacity limit in the power transmission and distribution area, a predicted value of the power generation amount in the second power generation facility, and a predicted value of the power demand in the power transmission and distribution area.

9. A program for an electric power supply and demand management system that manages the supply and demand of electric power within the electric power transmission and distribution area, the program comprising: a first power generation facility capable of stably supplying electric power within a power transmission and distribution area; a second power generation facility that generates electric power using renewable energy and is capable of supplying electric power within the power transmission and distribution area; an alternative mechanism that substitutes for output suppression of electric power generated by the second power generation facility; and a server that controls the supply and demand of electric power by the second power generation facility and the alternative mechanism, The server, an output suppression information acquisition unit that acquires output suppression information for the second power generation facility, the output suppression information including information on a time period during which output is suppressed and information on an amount of output suppression for the second power generation facility; an output suppression substitutable information acquisition unit that acquires output suppression substitutable information including information on time periods when the substituting mechanism can substitute for the output suppression of power and information on the amount of power that can be substituted for the output suppression; a determination unit that determines whether or not the entire amount of output suppression can be substituted for the output suppression by the substitution mechanism, based on the output suppression information acquired by the output suppression information acquisition unit and the output suppression substitutability information acquired by the output suppression substitutability information acquisition unit; and an output suppression alternative status control unit that controls an alternative status of output suppression of the electric power output from the second power generation facility by the alternative mechanism in accordance with a determination result by the determination unit, The second power generation facility is provided in plurality, the output suppression substitution status control unit controls to suppress output of any one of the plurality of second power generation facilities in accordance with a predetermined priority if the determination unit does not determine that the entire amount of output suppression can be substituted by the substitution mechanism; A program for an electricity supply and demand management system, in which the priority is determined based on at least one of information on the fee for using the alternative mechanism, location information of the second power generation facility, location information of the alternative mechanism, information on the stability of the voltage of the electricity transmission and distribution network, and information on the stability of the frequency of the electricity transmission and distribution network.

10. A program for an electric power supply and demand management system that manages the supply and demand of electric power within the electric power transmission and distribution area, the program comprising: a first power generation facility capable of stably supplying electric power within a power transmission and distribution area; a second power generation facility that generates electric power using renewable energy and is capable of supplying electric power within the power transmission and distribution area; an alternative mechanism that substitutes for output suppression of electric power generated by the second power generation facility; and a server that controls the supply and demand of electric power by the second power generation facility and the alternative mechanism, The server, an output suppression information acquisition unit that acquires output suppression information for the second power generation facility, the output suppression information including information on a time period during which output is suppressed and information on an amount of output suppression for the second power generation facility; an output suppression substitutable information acquisition unit that acquires output suppression substitutable information including information on time periods when the substituting mechanism can substitute for the output suppression of power and information on the amount of power that can be substituted for the output suppression; a determination unit that determines whether or not the entire amount of output suppression can be substituted for the output suppression by the substitution mechanism, based on the output suppression information acquired by the output suppression information acquisition unit and the output suppression substitutability information acquired by the output suppression substitutability information acquisition unit; and an output suppression alternative status control unit that controls an alternative status of output suppression of the electric power output from the second power generation facility by the alternative mechanism in accordance with a determination result by the determination unit, A program for an electricity supply and demand management system, in which the output suppression information acquisition unit acquires the output suppression information by deriving the output suppression information using an upper capacity limit in the electricity transmission and distribution area, a predicted value of the power generation amount in the second power generation facility, and a predicted value of the electricity demand in the electricity transmission and distribution area.

11. A computer-readable recording medium used in an electricity supply and demand management system that manages the supply and demand of electricity within the electricity transmission and distribution area, the computer-readable recording medium comprising: a first power generation facility capable of stably supplying electricity within a power transmission and distribution area; a second power generation facility that generates electricity using renewable energy and is capable of supplying electricity within the power transmission and distribution area; an alternative mechanism that substitutes for output suppression of electricity generated by the second power generation facility; and a server that controls the supply and demand of electricity by the second power generation facility and the alternative mechanism, The server, an output suppression information acquisition unit that acquires output suppression information for the second power generation facility, the output suppression information including information on a time period during which output is suppressed and information on an amount of output suppression for the second power generation facility; an output suppression substitutable information acquisition unit that acquires output suppression substitutable information including information on time periods when the substituting mechanism can substitute for the output suppression of power and information on the amount of power that can be substituted for the output suppression; a determination unit that determines whether or not the entire amount of output suppression can be substituted for the output suppression by the substitution mechanism, based on the output suppression information acquired by the output suppression information acquisition unit and the output suppression substitutability information acquired by the output suppression substitutability information acquisition unit; and an output suppression alternative status control unit that controls an alternative status of output suppression of the electric power output from the second power generation facility by the alternative mechanism in accordance with a determination result by the determination unit, The second power generation facility is provided in plurality, the output suppression substitution status control unit controls to suppress output of any one of the plurality of second power generation facilities in accordance with a predetermined priority if the determination unit does not determine that the entire amount of output suppression can be substituted by the substitution mechanism; A recording medium in which the priority is determined based on at least one of information on the fee for using the alternative mechanism, location information of the second power generation facility, location information of the alternative mechanism, information on the stability of the voltage of the power transmission and distribution network, and information on the stability of the frequency of the power transmission and distribution network.

12. A computer-readable recording medium used in an electricity supply and demand management system that manages the supply and demand of electricity within the electricity transmission and distribution area, the computer-readable recording medium comprising: a first power generation facility capable of stably supplying electricity within a power transmission and distribution area; a second power generation facility that generates electricity using renewable energy and is capable of supplying electricity within the power transmission and distribution area; an alternative mechanism that substitutes for output suppression of electricity generated by the second power generation facility; and a server that controls the supply and demand of electricity by the second power generation facility and the alternative mechanism, The server, an output suppression information acquisition unit that acquires output suppression information for the second power generation facility, the output suppression information including information on a time period during which output is suppressed and information on an amount of output suppression for the second power generation facility; an output suppression substitutable information acquisition unit that acquires output suppression substitutable information including information on time periods when the substituting mechanism can substitute for the output suppression of power and information on the amount of power that can be substituted for the output suppression; a determination unit that determines whether or not the entire amount of output suppression can be substituted for the output suppression by the substitution mechanism, based on the output suppression information acquired by the output suppression information acquisition unit and the output suppression substitutability information acquired by the output suppression substitutability information acquisition unit; and an output suppression alternative status control unit that controls an alternative status of output suppression of the electric power output from the second power generation facility by the alternative mechanism in accordance with a determination result by the determination unit, A recording medium in which the output suppression information acquisition unit acquires the output suppression information by deriving the output suppression information using an upper capacity limit in the transmission and distribution area, a predicted value of the power generation amount in the second power generation facility, and a predicted value of the power demand amount in the transmission and distribution area.

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