JP5820892B2 - Electric power supply and demand control device and electric power supply and demand control method - Google Patents

Description

  The present invention relates to a power supply / demand control apparatus and a power supply / demand control method.

  While interest in clean energy is increasing, solar power generation systems are spreading to general power consumers. The generated power is mainly used for self-consumption by power consumers, and the surplus is also reversely flowed (sold) to the commercial grid of the power company.

  Patent Document 1 describes a bidirectional power conversion device with a reverse power flow prevention function that can suppress a time lag at the time of switching a reverse power flow prevention operation and a voltage transient fluctuation to an AC distribution network and can reduce energy loss. Reference 2 describes a photovoltaic power generation system that can prevent the occurrence of reverse power flow and can be used effectively even when there is a restriction that makes reverse power flow impossible.

JP2007-159370 JP2012-174773

  In response to the recent power supply and demand situation, electric power consumers are required to contribute to power supply and demand improvement by reducing power consumption, such as the adoption of hourly electricity rate systems. Under such circumstances, even a power consumer who owns a photovoltaic power generation system needs to take an action of causing a large amount of generated power to flow backward by reducing the power consumption of the electrical equipment.

  However, considering how much power consumption reduction and reverse power flow are necessary in which time zone, it is very troublesome work for power consumers to operate the equipment on their own. Accordingly, it is difficult to stabilize power supply and demand by appropriately performing reverse power flow. In addition, there are circumstances for power consumers, and the degree of cooperation for reverse power flow varies from one power consumer to another.

  The object of the present invention has been made in view of the above-mentioned problems, reduces the burden on the power consumer, performs reverse power flow according to the degree of cooperation of the power consumer, and is a time zone required in the power system. It is an object of the present invention to provide a power supply and demand control apparatus and a power supply and demand control method capable of contributing to stabilization of power supply and demand by appropriately performing reverse power flow.

In order to achieve the above object, a power supply and demand control apparatus according to the present invention is a power supply and demand control apparatus that controls the operating state and the amount of power sales of home appliances by the amount of power generated by a solar cell installed in a power consumer house. Means for storing information indicating the operation state of the home device set for each band, means for changing the operation state of the home device to the set operation state A in each time zone, and changes to the operation state A when the time zone for the operation state of the home device, and means for changing to a different operating state B and the operating state a, the home appliance is the operating state when the power generation amount satisfies the first condition when B, and surplus power generated power of the home said solar cell means for returning to the operating state a the operating state of the device is above the home power consumption if the previous SL power generation amount satisfies the second condition When it occurs To the control policy, the excess power or consumption priority consumed in the home, and a control policy selection means for selecting whether electric power selling preferences to sell electricity to the surplus power, wherein the control policy selection means, power industry On the basis of a power demand control request from a person, the control policy is selected to be either consumption priority or power sale priority in a time zone in which power consumption of the in-home device is suppressed .

In order to achieve the above object, a power supply and demand control method according to the present invention is a power supply and demand control method for controlling the operating state of a home appliance and the amount of power sold by the amount of power generated by a solar cell installed in a power consumer home. A step of storing information indicating the operation state of the home device set for each time zone, a step of changing the operation state of the home device to the set operation state A in each time zone, and the operation state A when the time zone to be changed, the steps of the operation state of the home device, changing to a different operating state B and the operation state a if the power generation amount satisfies the first condition, the customer premises equipment is the when the operating state B, if the previous SL power generation amount satisfies the second condition and a step of returning the operation state of the home device to the operating state a, the generated power of the solar cell exceeds the home power consumption Generate surplus power And selecting a control policy, whether to prioritize consumption of the surplus power in the home or to prioritize power sales of the surplus power, and selecting the control policy includes: Based on a power demand control request from an electric power provider, the control policy is selected to be either consumption priority or power sale priority in a time zone in which power consumption of the home appliance is suppressed .

  According to the power supply and demand control device and the power supply and demand control method according to the present invention, the burden on the power demand and supply control of the power consumer is reduced, the reverse flow is performed according to the degree of cooperation of the power consumer, and the power supply and demand is necessary. It will be possible to contribute to the stabilization of power supply and demand by appropriately performing reverse power flow during the specified time period.

The system block diagram in the 1st Embodiment of this invention. The figure shown in order to demonstrate the electricity bill system classified by time in the 1st Embodiment of the present invention. The flowchart which shows the control procedure of the operation mode by the solar cell power generation amount in the 1st Embodiment of this invention. The flowchart which similarly shows the control procedure of the operation mode by the solar cell power generation amount in the 1st Embodiment of this invention. The flowchart which similarly shows the control procedure of the operation mode by the solar cell power generation amount in the 1st Embodiment of this invention. The flowchart which similarly shows the control procedure of the operation mode by the solar cell power generation amount in the 1st Embodiment of this invention. The flowchart which similarly shows the control procedure of the operation mode by the solar cell power generation amount in the 1st Embodiment of this invention. The flowchart which similarly shows the control procedure of the operation mode by the solar cell power generation amount in the 1st Embodiment of this invention. The flowchart which similarly shows the control procedure of the operation mode by the solar cell power generation amount in the 1st Embodiment of this invention. The system block diagram in the 2nd Embodiment of this invention. The figure for demonstrating the operation | movement sequence of the electric power supply-and-demand control in the 2nd Embodiment of this invention. The figure for demonstrating the operation mode of each time slot | zone determined with the electric power demand control request | requirement notified to a HEMS server from the electric power provider in the 2nd Embodiment of this invention. The figure for demonstrating the operation mode corresponding to the electric power demand control request | requirement in the 2nd Embodiment of this invention. The figure which shows an example with which each means was provided in the HEMS server in each embodiment of this invention.

  The power supply and demand control device according to the present invention controls the operation state and power sale amount of the home appliances by the amount of photovoltaic power generation, and stores the operation state of the home appliances set for each time zone, Means for changing the operating state of the home device to the set operating state A and the operating state of the home device to the operating state B when the amount of photovoltaic power generation satisfies the first condition And means for returning the operating state of the home appliance to the operating state A when the amount of photovoltaic power generation satisfies the second condition.

Hereinafter, an embodiment of the present invention will be described, but the present invention is not limited to this.
<First Embodiment>
FIG. 1 is a diagram for explaining a first embodiment of the present invention. In FIG. 1 (a), power is also generated by the solar cell 12 while receiving power supply from the power transmission / distribution network 4 at three electric power consumers. A PCS (Power Conditioning System) 9 controls power feeding and reverse power flow from the power transmission and distribution network 4 and power conversion of the solar cell 12, and supplies power to the home appliance 11 through the distribution board 13. The electric power consumer 3 has a television, an air conditioner, lighting, etc. as the home appliance 11.

  A HEMS (Homer Energy Management System) 10 has a function of receiving input of device operation and control policy from the electric power consumer 3 and controlling a home device 11 (TV, air conditioner, lighting, etc.).

(1) Input (setting) performed by the electric power consumer 3
The power consumer 3 first sets how to use the power generated by the solar battery 12 in the HEMS server 10 by selecting either “consumption priority” or “priority for power sale”. “Consumption priority” means that when the power generated by the solar cell 12 exceeds the power consumed in the home and surplus power is generated, the surplus power is consumed in the home by relaxing the restrictions on the operation of home equipment due to the power demand control request. To do. “Power sale priority” means that when the power generated by the solar cell 12 exceeds the power consumed in the home and surplus power is generated, the surplus power is reversed without relaxing the restrictions on operation of the home device due to the power demand control request. It means to make a tidal current (power sale).

  Next, a device control time table is created by setting (input) to the HEMS server 10. The operation of the home device 11 for each time zone is uniformly set for the entire home device 11 by selecting the three device operations (operation modes) shown in FIG. Here, it is assumed that the power consumer 3 has created a device control time table as shown in FIG. The reason why the electric power consumer 3 has created such a table is that the time-based electricity charge system of FIG. 2 is applied.

(2) Device Control Operation When the time zone of the device control time table arrives, the HEMS server 10 controls the device operation (operation mode) described in the table, that is, the operation input by the power consumer 3.

  However, in these time zones, the operation changes to a device operation (operation mode) different from the operation set in the table depending on the power generation amount of the solar cell 12.

The HEMS server 10 controls device operation (operation mode) according to the flowcharts shown in FIGS.
The HEMS server 10 determines whether the control policy set by the electric power consumer 3 is “consumption priority” or “power sale priority” (step S1), and the power generation amount of the solar cell 12 is determined in each control policy. Based on the operation mode change.

  In “consumption priority”, the HEMS server 10 determines whether the mode of the current time zone described in the device control time table is “normal mode”, “eco mode”, or “stop mode” (step) S11). Here, when it is determined that the mode is “normal mode”, the HEMS server 10 applies the “normal mode” to the home device 11 (step S12), and sets the power generation surplus flag of the solar cell 12 to “FALSE” (no surplus). Change (step S13).

On the other hand, if it is determined in step S11 that the “eco mode” is selected, the HEMS server 10 determines whether the power generation surplus flag is “TRUE” (with surplus) or “FALSE” (step S111). Here, when it is determined that it is “TRUE”, the HEMS server 10 applies the “normal mode” to the in-home device 11 (step S112), and the power generation amount P _v of the solar cell 12 is set to the second set value. It is determined whether the threshold value _{Pth112 is} less than (step S113). When the power generation amount P _v of the solar cell 12 is less than the threshold value P _th112 (YES), the HEMS server 10 changes the power generation surplus flag of the solar cell 12 to “FALSE” (step S114), and proceeds to step S11. If the power generation amount _Pv of the solar cell 12 is _{equal to} or greater than the threshold value _Pth112 (NO), the process proceeds to step S11 as it is.

If it is determined in step S111 that it is “FALSE”, the HEMS server 10 applies the “eco mode” to the home appliance 11 (step S115), and the power generation amount _Pv of the solar cell 12 is the first. It is determined whether or not the threshold value P _th111 (where P _th111 > P _th112 ) is _{equal to} or greater than the set value (step S116). When the power generation amount P _v of the solar cell 12 is _{equal to} or greater than the threshold value P _th111 (YES), the HEMS server 10 changes the power generation surplus flag of the solar cell 12 to “TRUE” (step S117), and proceeds to step S11. When the power generation amount _Pv of the solar cell 12 is less than the threshold value _Pth111 (NO), the process proceeds to step S11 as it is.

On the other hand, if it is determined in step S11 that the mode is “stop mode”, the HEMS server 10 determines whether the power generation surplus flag is “TRUE” (with surplus) or “FALSE” (without surplus) ( Step S121). Here, when it is determined that it is “TRUE”, the HEMS server 10 applies the “eco mode” to the in-home device 11 (step S122), and the power generation amount P _v of the solar cell 12 is less than the threshold value P _th122. Is determined (step S123). If the power generation amount P _v of the solar cell 12 is less than the threshold value P _th122 (YES), the HEMS server 10 changes the power generation surplus flag of the solar cell 12 to “FALSE” (step S124), and proceeds to step S11. If the power generation amount P _v of the solar cell 12 is _{equal to} or greater than the threshold value P _th122 (NO), the process proceeds to step S11 as it is.

If it is determined in step S121 that it is “FALSE”, the HEMS server 10 applies the “stop mode” to the home appliance 11 (step S125), and the power generation amount _Pv of the solar cell 12 is the threshold. It is determined whether or not the value is greater than or equal to the value P _th121 (where P _th121 > P _th122 ) (step S126). When the power generation amount P _v of the solar cell 12 is _{equal to} or greater than the threshold value P _th121 (YES), the HEMS server 10 changes the power generation surplus flag of the solar cell 12 to “TRUE” (step S127), and proceeds to step S11. When the power generation amount _Pv of the solar cell 12 is less than the threshold value _Pth121 (NO), the process proceeds to step S11 as it is.

  As described above, when there is a surplus in the amount of power generated by the solar cell 12, the operation mode is changed to an operation mode that allows more power consumption, and when there is no surplus, the operation is described in the device control time table. Return to the operation mode (FIGS. 4 to 6). That is, in the “eco mode” or “stop mode” time zone, if it is determined that there is a surplus in the amount of power generated by the solar cell 12, it becomes “normal mode” or “eco mode”, respectively. Will be in a state of consuming power, and surplus power will be used for consumption.

  In “power sale priority”, the HEMS server 10 determines whether the mode of the current time zone described in the device control time table is “normal mode”, “eco mode”, or “stop mode” ( Step S21). Here, when it is determined as “normal mode”, the HEMS server 10 applies the “stop mode” to the home device 11 (step S22), and sets the power generation shortage flag of the solar cell 12 to “FALSE” (with surplus). Change (step S23).

On the other hand, when it is determined in step S21 that the “eco mode” is selected, the HEMS server 10 determines whether the power generation insufficient flag is “TRUE” (no surplus) or “FALSE” (step S211). Here, when it is determined that it is “TRUE”, the HEMS server 10 applies the “stop mode” to the in-home device 11 (step S212), and the power generation amount P _v of the solar cell 12 is the fourth set value. It is determined whether or not the threshold value _{Pth212 is} greater than or _equal to (step S213). If the power generation amount P _v of the solar cell 12 is _{equal to} or greater than the threshold value P _th212 (YES), the HEMS server 10 changes the power generation shortage flag of the solar cell 12 to “FALSE” (step S214), and proceeds to step S21. When the power generation amount _Pv of the solar cell 12 is less than the threshold value _Pth212 (NO), the process proceeds to step S21 as it is.

Further, when it is determined in step S211 that it is “FALSE”, the HEMS server 10 applies the “eco mode” to the home appliance 11 (step S215), and the power generation amount _Pv of the solar cell 12 is the third. It is determined whether or not it is less than a threshold value P _th211 (where P _th212 > P _th211 ) that is the set value (step S216). If the power generation amount P _v of the solar cell 12 is less than the threshold value P _th211 (YES), the HEMS server 10 changes the power generation shortage flag of the solar cell 12 to “TRUE” (step S217), and proceeds to step S21. If the power generation amount P _v of the solar cell 12 is _{equal to} or greater than the threshold value P _th211 (NO), the process proceeds to step S21 as it is.

On the other hand, if it is determined in step S21 that the mode is “stop mode”, the HEMS server 10 determines whether the power generation shortage flag is “TRUE” (no surplus) or “FALSE” (with surplus) ( Step S221). Here, when it is determined that it is “TRUE”, the HEMS server 10 applies the “eco mode” to the in-home device 11 (step S222), and the power generation amount P _v of the solar cell 12 is _{equal to} or greater than the threshold value P _th222. It is determined whether or not (step S223). When the power generation amount P _v of the solar cell 12 is _{equal to} or greater than the threshold value P _th222 (YES), the HEMS server 10 changes the power generation shortage flag of the solar cell 12 to “FALSE” (step S224), and proceeds to step S21. When the power generation amount _Pv of the solar cell 12 is less than the threshold value _Pth222 (NO), the process proceeds to step S21 as it is.

If it is determined in step S221 that “FALSE”, the HEMS server 10 applies the “normal mode” to the home appliance 11 (step S225), and the power generation amount P _v of the solar cell 12 is the threshold. It is determined whether or not it is less than the value P _th221 (where P _th221 > P _th222 ) (step S226). When the power generation amount P _v of the solar cell 12 is less than the threshold value P _th221 (YES), the HEMS server 10 changes the power generation shortage flag of the solar cell 12 to “TRUE” (step S227), and proceeds to step S21. When the power generation amount _Pv of the solar cell 12 is _{equal to} or greater than the threshold value _Pth221 (NO), the process proceeds to step S21 as it is.

  As described above, when the power generation amount of the solar battery 12 is insufficient, the operation mode is changed to the operation mode in which the power consumption is more limited, and when the shortage is resolved, the operation is described in the device control time table. Return to the operation mode (FIGS. 7 to 9). That is, in the “eco mode” or “normal mode” time zone, when it is determined that the amount of power generated by the solar cell 12 is insufficient, the “stop mode” or “eco mode” is set, respectively, and the initial power consumer 3 setting is set. As a result, power consumption is reduced, and more power is reversely flowed (sold).

  By performing the control as described above, the load related to the power supply / demand control of the power consumer 3 is reduced, the reverse flow is performed according to the degree of cooperation of the power consumer 3, and the time zone required for the power supply / demand Therefore, it can contribute to the stabilization of power supply and demand by appropriately conducting reverse power flow.

<Second Embodiment>
FIG. 10 is a diagram for explaining a second embodiment of the present invention. The power company 1 supplies power to the power consumers 3 1 to _n through the power transmission facility 6 and the power transmission and distribution network 4. The power company 1 includes a server 7 performs power demand control to transmit the power demand control request to the power customer 3 _{1 to n} of HEMS (Home Energy Management System) server _{10 1 to n.} The service provider 2 is a provider that provides various services to the subscribers via the communication network 5. In the second embodiment of the present invention, the server 8 controls the power consumers 31 to _n. Has the role of providing timetables. The electric power consumers 3 1 to _n have solar cells 12 1 to _n , and the generated power is supplied to in-home devices 11 1 to _n via PCS (Power Conditioning System) ₉₁ to _n , and the insufficient power is electric power. Purchasing from the operator 1 via the power transmission and distribution network 4 When the generated power exceeds the in-home power consumption, the surplus power is reversely flowed (power sold) to the transmission / distribution network 4 via the PCS 9. Moreover, it has a television, an air-conditioner, illumination etc. as the in-home equipment _{111- n} of the electric power consumers 31- _n .

The flow of power supply and demand control is as follows, and FIG. 11 shows an operation sequence.
The electric power consumers 3 1 to _n set a control policy (FIG. 11 (1)).
The electric power company 1 creates an electric power demand control request based on the supply and demand estimate (FIG. 11 (2)).
The server 7 transmits a power demand control request to the HEMS servers _101-n (FIG. 11 (3)).
The server 8 creates a device control time table based on the power demand control request (FIG. 11 (4)).
Based on the device control time table, the HEMS servers 10 1 to _n start controlling the home devices 11 1 _{to n} of the power consumers 3 1 to _n (FIG. 11 (5)).
Control by the electric power generation amount of the solar cells _121-n is executed (FIG. 11 (6)).

These operations will be described in detail below.
(Electric power consumers 31 to _n set a control policy (FIG. 11 (1)))
Here, the electric power consumers 3 1 to _n select how to use the power generated by the solar cells 12 1 to _n by selecting either “consumption priority” or “priority for power sale”. Set to 10. Descriptions of “consumption priority” and “power sale priority” are the same as those in the first embodiment, and will be omitted.

(Electric power supplier 1 creates an electric power demand control request based on supply and demand expectations (FIG. 11 (2))
The power company 1 predicts the future power supply / demand situation while constantly monitoring the power supply / demand in the supply area. Among these, a demand control request is created in order to achieve leveling of power demand and suppression of power consumption at power peak.

  The types of demand control requests include TOU (Time Of Use), which sets electricity charges high during times when electricity demand is high, and electricity charges cheaply during times when electricity demand is small, and power due to tight power supply and demand in the region. There is Emergency etc. that encourages consumers to further reduce power consumption.

(The server 7 transmits a power demand control request to the HEMS servers ₁₀₁ to _n (FIG. 11 (3))).
The electric power company 1 transmits the demand control request created above to the HEMS servers ₁₀₁ to _n using the server 7 in advance. As a result, the electric power company 1 can suppress power consumption in a time zone with a high electricity bill, and can expect further power consumption reduction in an emergency time zone.

(In the server 8, a device control time table is created based on the power demand control request (FIG. 11 (4)))
When receiving the power demand control request from the server 7, the HEMS servers 10 1 to _n request the server 8 of the service provider 2 to create a device control time table (FIG. 11 (4-1)). The server 8 creates a device control time table according to the following procedure.
(A) The operation mode of the in-home devices _{111 to n} is determined in accordance with the demand control request for each time zone subject to the power demand control request.
(A) For each time zone, the operation content corresponding to the operation mode is applied to each device to form a device control time table.

The server 8 provides the created device control time table to the HEMS servers _101-n (FIG. 11 (4-2)).

(In HEMS server _{101- n} , control of the in-home equipment _{111- n} of the electric power consumer 31- _n is started (FIG. 11 (5)).
When the target time zone for the power demand control request arrives, the HEMS servers _{101 to n} perform control so that the device operation described in the device control time table is performed.

(Control by power generation amount of solar cells _{121 to n} is executed (FIG. 11 (6)))
After starting control, the HEMS servers 10 1 to _n monitor the power generation amount of the solar cells _{121 to n} , and a surplus is recognized in the power generation amount according to the control policy set by the power consumers 3 1 to _n / Change the operation mode when lack is recognized. As the operation mode is changed, the operation of the device is also changed.

Next, the power supply and demand control operation will be described with specific power demand control requests, operation modes, time zones, and electricity charges.
FIG. 12A is a diagram for explaining a one-day power demand control request notified from the power provider 1 (server 7) to the HEMS server 10. FIG. This is a request that combines TOU (electricity charges by time zone) and emergency (electricity tightness). Electricity charges at 00:00 to 7:00 and 23:00 to 24:00 are 12 yen / kWh, 7:00 to 13:00 and 16: 0 to 23:00 are 30 yen / kWh, 13: 00 to 16 0:00 is 54 yen / kWh, and Emergency (power tightness) is set at 14:00 to 15:00.

  The server 8 of the service provider 2 determines the operation mode according to the power demand control request for each time zone according to FIG. The TOU (low fee) time zone is the normal mode, the TOU (high fee) time zone is the eco mode, and the Emergency (power tightness) time zone is the stop mode. As a result, the operation mode for each time period is determined as shown in FIG.

When the application time zone of the power demand control request is reached, the HEMS servers _101-n control the device operation according to the flowcharts shown in FIGS. The description of the flowchart is omitted because it is the same as that of the first embodiment of the present invention.

  By performing power demand control as described above, the burden on power demand and supply control of power consumers is reduced, reverse power flow is performed according to the degree of cooperation of power consumers, and the time zone required for power supply and demand Therefore, it can contribute to the stabilization of power supply and demand by appropriately conducting reverse power flow.

(Operational effects of the first and second embodiments)
In the first embodiment of the present invention, the HEMS server 10 creates the device control time table. However, the present invention is not limited to this, and the power provider 1 (server 7) can create the device control time table. It is also possible for another company that provides various services on the network 5 to create it.

  In the second embodiment of the present invention, when there is a power demand control request for a certain day, the operation mode of the day is provided from the service provider 2 (server 8) to the power consumer, and the photovoltaic power generation It is assumed that the operation mode is controlled based on the power generation amount. However, there are various types of power demand control requests, and the power demand control of the present invention can be applied to power demand control requests other than the power demand control requests (TOU, Emergency) handled in the second embodiment of the present invention. Can be applied. For example, the power demand control request can also be applied to a request for a high electricity bill (CPP: Critical Peak Price) only in a specific time zone (13: 00 to 14:00) in one day. In addition, the second embodiment of the present invention is a case where the TOU and Emergency of a certain day are notified to the electric power consumer. On the next day, another electric power demand control request is sent to the electric power consumer. Notification, another mode of operation is provided, and power demand control can also be performed. That is, the present invention does not require that the power demand control request sent from the power company is static (invariable), but is a power demand control request that is dynamically created according to the circumstances of the power company. Can also be applied.

(Other embodiments)
In each of the above embodiments, as shown in FIG. 14, the HEMS server 10 stores the operation state 101 of the home device 11 set for each time zone, and the operation state where the operation state of the home device 11 is set. Means 102 for changing to A, means 103 for changing the operating state of the home appliance 11 to the operating state B when the amount of photovoltaic power generation satisfies the first condition, and the amount of photovoltaic power generation satisfies the second condition. The example provided with the means 104 which returns the operation state of the household equipment 11 to the operation state A when satisfying has been described.

  However, the present invention is not limited to this, and devices other than the HEMS server 10 may include the units 101 to 104.

  In short, the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Electric power provider, 2 ... Service provider, 3 ... Electric power customer, 4 ... Transmission / distribution network, 5 ... Communication network, 6 ... Power transmission equipment, 7, 8 ... Server, 9 ... PCS, 10 ... HEMS server, 11 ... in-home equipment, 12 ... solar cell, 13 ... distribution panel, 101-104 ... means.

Claims (8)

An electric power supply and demand control device that controls the operating state and the amount of electricity sold by household appliances based on the amount of power generated by solar cells installed at the home of the electric power consumer .
Means for storing information indicating the operating state of the home device set for each time zone;
Means for changing the operation state of the home device to the set operation state A in each time zone;
At time zone is changed to the operating state A, and means for said operating state of the home device, changing to a different operating state B and the operation state A if the power generation amount satisfies the first condition,
When the home device is of the operating state B, a means for returning the operating state of the home device to the operating state A if the previous SL power generation amount satisfies the second condition
When the generated power of the solar cell exceeds the power consumption in the home and generates surplus power, the control policy is to determine whether to give priority to consumption of the surplus power in the home or to sell power to sell the surplus power. A control policy selection means for selecting , and
The control policy selection means includes
Electric power characterized by selecting whether to give priority to power consumption or power sales in the time zone in which power consumption of the in-home device is suppressed based on a power demand control request from an electric power provider Supply and demand control device. If the preset control policy is consumption-first,
The operating state B is an operating state with higher power consumption than the operating state A,
The first condition is that before Symbol power generation amount is first set value or more,
The second condition, the power supply and demand control apparatus according to claim 1, before Symbol power generation amount is equal to or is less than the first set value is smaller than the second set value. If the preset control policy is power sale priority,
The operating state B is an operating state with lower power consumption than the operating state A,
The first condition is that before Symbol power generation amount is less than the third set value,
The second condition, the power supply and demand control apparatus according to claim 1, before Symbol power generation amount is equal to or is that the at third set value larger than the fourth set value or more.   The power supply and demand control according to any one of claims 1 to 3, wherein the operation state of the home device set for each time period is set in advance according to a demand control request from a power company. apparatus. An electric power supply and demand control method for controlling the operation state of home appliances and the amount of electric power sold by the amount of power generated by solar cells installed in electric power consumers' homes ,
Storing information indicating the operating state of the home device set for each time zone; and
In each time zone, changing the operating state of the home device to the set operating state A;
At time zone is changed to the operating state A, a step of the operation state of the home device, changing to a different operating state B and the operation state A if the power generation amount satisfies the first condition,
When the home device is of the operating state B, a step if the previous SL power generation amount satisfies the second condition to return the operation state of the home device to the operating state A,
When the generated power of the solar cell exceeds the power consumption in the home and generates surplus power, the control policy is to determine whether to give priority to consumption of the surplus power in the home or to sell power to sell the surplus power. Process to choose and
Have
The step of selecting the control policy includes:
Electric power characterized by selecting whether to give priority to power consumption or power sales in the time zone in which power consumption of the in-home device is suppressed based on a power demand control request from an electric power provider Supply and demand control method. If the preset control policy is consumption-first,
The operating state B is an operating state with higher power consumption than the operating state A,
The first condition is that before Symbol power generation amount is first set value or more,
The second condition, the power supply and demand control method according to claim 5, before Symbol power generation amount is equal to or is less than the first set value is smaller than the second set value. If the preset control policy is power sale priority,
The operating state B is an operating state with lower power consumption than the operating state A,
The first condition is that before Symbol power generation amount is less than the third set value,
The second condition, the power supply and demand control method according to claim 5, before Symbol power generation amount is equal to or is that the at third set value larger than the fourth set value or more.   The power supply and demand control according to any one of claims 5 to 7, wherein an operation state of the home device set for each time zone is set in advance in response to a demand control request from an electric power company. Method.

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