Power management device, program, power management method, and self-delivery system

Abstract

To provide a power management device, a program, a power management method, and a self-consignment system to minimize occurrence of imbalance by using both adjustment of the amount of power generation using a secondary battery and a load installation capable of converting electrical energy into thermal energy in self-consignment.SOLUTION: A power generation control unit may be capable of controlling a secondary battery such that a planned value and an actual value of the amount of power generated by a power generation installation match in one unit time. A demand control unit may be capable of controlling a specific load installation such that a planned value and an actual value of a demand amount of a load installation match in one unit time. The demand control unit may control the demand amount by the load installation over a plurality of unit times after one unit time when the secondary battery is controlled in one unit time. The power generation control unit may control the amount of power generated by the power generation installation over the plurality of unit times when the demand amount by the load installation is controlled over the plurality of unit times.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a power management device, a program, a power management method, and a self-delivery system.

Background Art

[0002] In corporate environmental activities, self-consumption using solar power generation is widely utilized. As the next means of self-consumption, self-delivery has attracted attention. Self-delivery is a power transmission service that utilizes the power grid maintained, operated, and managed by an electric power company to transmit electricity generated by a power generation facility of an operator to a load facility of an operator at another location. Patent Documents 1 and 2 disclose technologies related to self-delivery.

[0003] In self-delivery, the rule of the planned value at the same time and the same amount must be observed. The planned value at the same time and the same amount means predicting the planned value of the power generation amount and the planned value of the power demand amount for each unit time, and making the actual supply and demand match the planned value so that there is no deviation.

[0004] An operator prepares a power management device for power generation that manages the power generation amount by a power generation facility installed by the operator and a power management device for demand that manages the demand amount by the load facility of the operator, and manages the power in self-delivery. However, when the demand amount by the load facility of the operator is managed separately from the power generation amount, it is not easy to adjust, and in particular, there is a limit to adjusting to correspond to the power generation amount over a plurality of unit times.

[0005] For adjusting the demand amount, load facilities such as chillers and heat pumps that can convert electric energy into thermal energy may be used. However, load facilities such as chillers and heat pumps require a longer time than the unit time for converting energy larger than a predetermined amount. Therefore, load facilities such as chillers and heat pumps are not suitable as an adjustment force for adjusting the demand amount while observing the rule of the planned value at the same time and the same amount in one unit time.

[0006] On the one hand, secondary batteries may be used to adjust the power generation amount. By using a secondary battery, it is possible to adjust the power generation amount in a single unit of time. However, the discharge amount of the secondary battery is finite, and when it comes to ensuring a sufficient discharge amount for adjusting the power generation amount, a large-capacity secondary battery is required, which results in a high cost.

[0007] Therefore, by adjusting the electrical energy between two or more facilities with different times from when electrical energy is input into the energy conversion device to when the energy is drawn out, cost reduction of the entire facility is achieved.

[0008] The adjustment makes use of the difference in the time until the energy is drawn out, and it does not necessarily compare the amount of energy stored in facilities equipped with energy conversion devices. However, generally, in order to improve the utilization efficiency of the facility, the shorter the time until the energy is drawn out, the smaller the amount of energy that can be stored tends to be.

[0009] To adjust the electrical energy between facilities, for example, consider the case between a facility with a short time until the energy is drawn out and a facility with a long time before the energy is drawn out. A facility with a short time until the energy is drawn out is, for example, a secondary battery that converts electrical energy into chemical energy and then converts it back into electrical energy for use. A facility with a long time before the energy is drawn out is, for example, a specific load facility that converts electrical energy into thermal energy and uses it as thermal energy as it is. Assuming that both the secondary battery and the specific load facility are facilities that can input 100 kWh of electrical energy, electrical energy adjustment is performed between the former and the latter. Ignoring conversion losses, the former inputs and draws out 100 kWh of electrical energy within 1 hour, and the latter inputs 100 kWh of electrical energy in 1 hour and draws it out as thermal energy over 12 hours after 1 hour.

[0010] One of the purposes of the latter to draw out over 12 hours is to suppress the energy cost as a running cost. For example, instead of using thermal energy at a high electricity energy cost during the day, thermal energy is stored using cheap electricity energy cost for a short time at night, and the stored thermal energy is used during the day.

[0011] When a carrier conducts self-delivery and cannot comply with the rule of the same quantity at the same planned value, it will be penalized according to the amount of imbalance, which is the deviation between the actual demand and supply and the planned value. Reducing the amount of imbalance enables further suppression of running costs.

Prior Art Documents

Patent Documents

[0012]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0013] In self-delivery, it is desirable to provide a technology that combines adjustment of the power generation amount using a secondary battery and load equipment capable of converting electrical energy into thermal energy to minimize the occurrence of imbalance.

Means for Solving the Problems

[0014] According to a first aspect of the present invention, a power management device is provided. The power management device may manage power in self-delivery in which electricity generated by a power generation facility of an operator is transmitted to a load facility of an operator at another location using the power grid of an electric power company. The power management device may include a power generation control unit that controls the amount of power generated by a power generation facility including a secondary battery. The power management device may include a demand control unit that controls the demand of a load facility including a specific load facility that can convert and draw out electrical energy greater than a predetermined amount into thermal energy over a time longer than one unit time. The power generation control unit may be able to control the secondary battery so that the planned value and the actual value of the amount of power generated by the power generation facility match in one unit time. The demand control unit may be able to control the specific load facility so that the planned value and the actual value of the demand by the load facility match in one unit time. The demand control unit may control the demand by the load facility over a plurality of unit times after one unit time when the secondary battery is controlled in one unit time. The power generation control unit may control the amount of power generated by the power generation facility over a plurality of unit times when the demand by the load facility is controlled over a plurality of unit times.

[0015] According to a second aspect of the present invention, a program is provided. The program may cause a computer to function as a power management device that manages power in self-delivery in which electricity generated by a power generation facility of an operator is transmitted to a load facility of an operator at another location using the power grid of an electric power company. The program may cause a computer to function as a power generation control unit that controls a power generation facility including a secondary battery. The program may cause a computer to function as a demand control unit that controls a load facility including a specific load facility that can extract by converting electrical energy greater than a predetermined amount into thermal energy over a time longer than one unit time. The power generation control unit may be able to control the secondary battery so that a planned value and an actual value of the power generation amount by the power generation facility match in one unit time. The demand control unit may be able to control the specific load facility so that a planned value and an actual value of the demand amount by the load facility match in one unit time. The demand control unit may control the specific load facility over a plurality of unit times after one unit time when the secondary battery is controlled in one unit time. The power generation control unit may control the power generation amount by the power generation facility over a plurality of unit times when the demand amount by the load facility is controlled over a plurality of unit times.

[0016] According to a third aspect of the present invention, a power management method is provided. The power management method may manage power in self-delivery in which electricity generated by a power generation facility of an operator is transmitted to a load facility of an operator at another location using the power grid of an electric power company. The power management method may include controlling a power generation facility including a secondary battery. The power management method may include controlling a load facility including a specific load facility that can convert and extract electrical energy greater than a predetermined amount into thermal energy over a time longer than one unit time. The power management method may be able to control the secondary battery so that a planned value and an actual value of the power generation amount by the power generation facility match in one unit time. The power management method may be able to control the specific load facility so that a planned value and an actual value of the demand amount by the load facility match in one unit time. The power management method may control the specific load facility over a plurality of unit times after one unit time when the secondary battery is controlled in one unit time. The power management method may control the power generation amount by the power generation facility over a plurality of unit times when the demand amount by the load facility is controlled over a plurality of unit times.

[0017] According to a fourth aspect of the present invention, a self-delivery system is provided. The self-delivery system may transmit electricity generated by a power generation facility of an operator to a load facility of an operator at another location using the power grid of an electric power company. The self-delivery system may include a power management device that manages power in self-delivery. The power management device may include a power generation control unit that controls a power generation facility including a secondary battery. The power management device may include a demand control unit that controls a load facility including a specific load facility that can convert and extract electrical energy greater than a predetermined amount into thermal energy over a time longer than one unit time. The power generation control unit may be able to control the secondary battery so that a planned value and an actual value of the power generation amount by the power generation facility match in one unit time. The demand control unit may be able to control the specific load facility so that a planned value and an actual value of the demand amount by the load facility match in one unit time. The demand control unit may control the specific load facility over a plurality of unit times after one unit time when the secondary battery is controlled in one unit time. The power generation control unit may control the power generation amount by the power generation facility over a plurality of unit times when the demand amount by the load facility is controlled over a plurality of unit times.

[0018] Note that the above summary of the invention does not list all the necessary features of the present invention. Also, sub-combinations of these feature groups can also be inventions.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0020] Hereinafter, the present invention will be described through embodiments, but the following embodiments do not limit the invention according to the claims. Also, not all combinations of features described in the embodiments are essential for the solution means of the invention.

[0021] FIG. 1 schematically shows an example of the self-delivery system 100. The self-delivery system 100 is a system that transmits electricity generated by a power generation facility of an operator to a load facility of an operator at another location using the power grid 200 maintained, operated, and managed by an electric power company. The self-delivery system 100 includes various facilities provided at the power generation location 110 of the operator, various facilities provided at the demand location 120 of the operator, and a power management device 130.

[0022] The power management device 130 can be realized either with the hardware configuration of a computer or with the configuration of a server on a communication network using cloud computing technology.

[0023] At the power generation location 110 of the operator, a solar power generation facility 111A, a secondary battery 111B, a power conditioner 112, and a transformer 113 are provided. The solar power generation facility 111A and the secondary battery 111B are examples of the "operator's power generation facility" in this invention. Further, the solar power generation facility 111A is an example of "another power generation facility different from the secondary battery" in this invention.

[0024] The solar power generation facility 111A is a device configured to convert solar energy into electrical energy by the photovoltaic effect and supply power suitable for the load. The solar power generation facility 111A is electrically connected to the power conditioner 112. The electrical energy output from the solar power generation facility 111 is sent to the power conditioner 112.

[0025] The secondary battery 111B is a battery that can be charged and used repeatedly. The secondary battery 111B is electrically connected to the power conditioner 112. Also, the secondary battery 111B is communicatively connected to the power conditioner 112. The secondary battery 111B operates in any one of the operation modes of a charging mode, a discharging mode, and a normal mode according to a control signal transmitted from the power conditioner 112. The charging mode is an operation mode for charging the secondary battery 111B. Charging means supplying electrical energy from the outside to the secondary battery 111B and storing it in the form of chemical energy. The discharging mode is an operation mode for discharging the secondary battery 111B. Discharging means flowing an electric current from the secondary battery 111B to an external circuit. The normal mode is an operation mode in which the secondary battery 111B is neither charged nor discharged.

[0026] The power conditioner 112 is a device having a function of converting the output of the solar power generation facility 111A into a predetermined power. The power conditioner 112 is composed of some or all of a main control monitoring device, a DC conditioner, an inverter, a DC-DC interface, an AC-AC interface, an AC system interface, etc. The power conditioner 112 is electrically connected to the solar power generation facility 111A and the secondary battery 111B. When the secondary battery 111B does not operate in the charging mode, the power conditioner 112 inputs the DC power output from the solar power generation facility 111A, converts it into AC power, and outputs it to the transformer 113. Also, when the secondary battery 111B operates in the charging mode, the power conditioner 112 inputs the DC power output from the solar power generation facility 111 and outputs it to the secondary battery 111B. Further, when the secondary battery 111B operates in the discharging mode, the power conditioner 112 inputs the DC power discharged from the secondary battery 111B, converts it into AC power, and outputs it to the transformer 113.

[0027] Also, the power conditioner 112 is communicatively connected to the secondary battery 111B. Further, the power conditioner 112 is communicatively connected to the power management device 130 via a WAN (Wide Area Network). The WAN is a communication network that connects geographically separated points. The power conditioner 112 transmits measurement data indicating the actual power generation amount at the power generation location 110 to the power management device 130. The actual power generation amount at the power generation location 110 includes the actual power generation amount by the solar power generation facility 111A and the actual charge / discharge amount of the secondary battery 111B. Also, the power conditioner 112 receives control data for controlling the power generation amount at the power generation location 110 from the power management device 130. Further, the power conditioner 112 transmits a control signal for controlling the operation mode of the secondary battery 111B to the secondary battery 111B.

[0028] The transformer 113 is a facility that transforms AC power and is connected to the power grid 200. The transformer 113 is electrically connected to the power conditioner 112 and the power grid 200. The transformer 113 steps up the AC power output from the power conditioner 112 and transmits it to the power grid 200.

[0029] At the business operator's demand location 120, there are provided a dedicated load facility 121A, a chiller 121B, a power conditioner 122, and a transformer 123. The dedicated load facility 121A and the chiller 121B are examples of the "business operator's load facilities" in this invention. Also, the chiller 121B is an example of the "specific load facility" in this invention.

[0030] The transformer 123 is a facility that transforms AC power and is connected to the power grid 200. The transformer 123 is electrically connected to the power conditioner 122. The transformer 123 inputs the power transmitted through the power grid 200 and outputs it to the power conditioner 122.

[0031] The power conditioner 122 is a device having a function of converting the output of the transformer 123 into a predetermined power. The power conditioner 122 is composed of some or all of a main control monitoring device, a DC conditioner, an inverter, a DC-DC interface, an AC-AC interface, an AC system interface, etc. The power conditioner 122 is electrically connected to the transformer 123, the dedicated load facility 121A, and the chiller 121B. The power conditioner 122 inputs the power output from the transformer 123 and outputs the power to the dedicated load facility 121A and the chiller 121B.

[0032] In addition, the power conditioner 122 is communicatively connected to the power management device 130 via the WAN. The power conditioner 122 transmits measurement data indicating the actual value of the power demand at the demand location 120 to the power management device 130. The actual value of the power demand at the demand location 120 includes the actual value of the power demand by the dedicated load facility 121A and the actual value of the power demand by the chiller 121B. Further, the power conditioner 122 receives control data for controlling the power demand at the demand location 120 from the power management device 130.

[0033] The dedicated load facility 121A is a load facility that consumes electrical energy and is a facility necessary for an operator to conduct business activities. The dedicated load facility 121A is electrically connected to the power conditioner 122. The dedicated load facility 121A operates with the power output from the power conditioner 122.

[0034] The chiller 121B is a device that circulates water controlled at a constant temperature to cool or adjust the temperature of the heat source. The chiller 121 is electrically connected to the power conditioner 122. The chiller 121B operates with the power output from the power conditioner 122. The chiller 121B is used to adjust the demand at the demand location 120. Here, an operator who conducts self-delivery must comply with the rule of the planned value at the same time and the same quantity. The planned value at the same time and the same quantity is a rule of predicting the planned value of the power generation amount and the planned value of the power demand amount for each unit time and making the actual supply and demand match the planned value so that there is no deviation. The chiller 121B can convert and extract electrical energy larger than a predetermined amount into heat energy over a time longer than one unit time. In other words, the chiller 121B cannot convert and extract electrical energy larger than a predetermined amount into heat energy within one unit time. Therefore, the chiller 121B can adjust a power demand larger than a predetermined amount over a time longer than one unit time. In other words, the chiller 121B cannot adjust a power demand larger than a predetermined amount within one unit time.

[0035] The power management device 130 is a device that manages power in self-delivery. The power management device 130 is communicatively connected to the power conditioner 112 and the power conditioner 122 via the WAN. The power management device 130 receives measurement data indicating the actual value of the power generation amount at the power generation location 110 from the power conditioner 112. Also, the power management device 130 transmits control data for controlling the power generation amount at the power generation location 110 to the power conditioner 112. Further, the power management device 130 receives measurement data indicating the actual value of the power demand amount at the demand location 120 from the power conditioner 122. Also, the power management device 130 transmits control data for controlling the power demand amount at the demand location 120 to the power conditioner 122.

[0036] FIG. 2 schematically shows an example of the functional configuration of the power management device 130. The power management device 130 includes a measurement data reception unit 131, a power generation planning unit 132, a demand planning unit 133, a power generation control unit 134, a demand control unit 135, a control data transmission unit 136, and a data storage unit 137.

[0037] The measurement data reception unit 131 is a software module that receives measurement data. The measurement data reception unit 131 receives measurement data indicating the actual value of the power generation amount at the power generation location 110 from the power conditioner 112. Also, the measurement data reception unit 131 receives measurement data indicating the actual value of the power demand amount at the demand location 120 from the power conditioner 122.

[0038] The power generation planning unit 132 is a software module that calculates the planned value of the power generation amount by the solar power generation facility 111A and the secondary battery 111B in one unit time, which is a prediction unit of the same amount of planned values at the same time. The power generation planning unit 132 calculates the planned value of the power generation amount in each of the plurality of unit times when the planned value of the demand amount in each of the plurality of unit times is calculated.

[0039] The demand planning unit 133 is a software module that calculates the planned value of the demand volume by the dedicated load equipment 121A and the chiller 121B in one unit time which is the prediction unit of the same amount of planned values at the same time. When the secondary battery 111B is controlled in one unit time, the demand planning unit 133 calculates the planned value of the demand volume in each of a plurality of unit times after that one unit time.

[0040] The power generation control unit 134 is a software module that controls the power generation amount by the solar power generation equipment 111A and the secondary battery 111B. In one unit time which is the prediction unit of the same amount of planned values at the same time, the power generation control unit 134 can control the secondary battery 111B so that the planned value and the actual value of the power generation amount by the solar power generation equipment 111A and the secondary battery 111B match. When the demand volume by the dedicated load equipment 121A and the chiller 121B is controlled over a plurality of unit times, the power generation control unit 134 controls the power generation amount by the solar power generation equipment 111A and the secondary battery 111B over the plurality of unit times. Also, in one unit time, when the actual value of the power generation amount by the solar power generation equipment 111A is smaller than the planned value, the power generation control unit 134 controls to discharge the secondary battery 111B. And when the demand volume by the chiller 121B decreases over a plurality of unit times, the power generation control unit 134 controls to charge the secondary battery 111B over the plurality of unit times. Also, in one unit time, when the actual value of the power generation amount by the solar power generation equipment 111A is larger than the planned value, the power generation control unit 134 controls to charge the secondary battery 111B. And when the demand volume by the chiller 121B increases over a plurality of unit times, the power generation control unit 134 controls to discharge the secondary battery 111B over the plurality of unit times. Also, in one unit time, the power generation control unit 134 controls the secondary battery 111B so that the planned value of the power generation amount calculated by the power generation planning unit 132 and the actual value of the power generation amount match.

[0041] When the power generation control unit 134 controls the power generation amount by the power generation facility over a plurality of unit times when the demand amount by the load facility is controlled over a plurality of unit times, feedback control is performed. Therefore, the power generation control unit 134 ensures that the power generation amount controlled in one unit time does not exceed the demand amount controlled in that one unit time so that the control does not diverge.

[0042] The demand control unit 135 is a software module that controls the demand amounts by the dedicated load facility 121A and the chiller 121B. The demand control unit 135 can control the chiller 121B so that the planned value and the actual value of the demand amounts by the dedicated load facility 121A and the chiller 121B match in one unit time, which is the prediction unit of the same amount at the same time of the planned value. When the secondary battery 111B is controlled in one unit time, the demand control unit 135 controls the demand amounts by the dedicated load facility 121A and the chiller 121B over a plurality of unit times after that one unit time. Also, when the secondary battery 111B is discharged in one unit time, the demand control unit 135 controls to reduce the demand amount by the chiller 121B over a plurality of unit times after that one unit time. Further, when the secondary battery 111B is charged in one unit time, the demand control unit 135 controls to increase the demand amount by the chiller 121B over a plurality of unit times after that one unit time. Also, the demand control unit 135 controls the chiller 121B so that the planned value of the demand amount calculated by the demand planning unit 133 matches the actual value of the demand amount in one unit time.

[0043] The control data transmission unit 136 is a software module that transmits control data. The control data transmission unit 136 transmits control data for controlling the power generation amount at the power generation location 110 to the power conditioner 112. Also, the control data transmission unit 136 transmits control data for controlling the power demand amount at the demand location 120 to the power conditioner 122.

[0044] The data storage unit 137 is a database that stores information for managing power in self-delivery. The data storage unit 137 is a collection of data created and managed in a certain format so as to be easily shared and used by the measurement data reception unit 131, the power generation planning unit 132, the demand planning unit 133, the power generation control unit 134, and the demand control unit 135. Also, the data storage unit 137 is a collection of data created and managed in a certain format so as to be easily processed and reused according to the application.

[0045] Figure 3 schematically shows an example of the data stored in the data storage unit 137. In the data storage unit 137, for example, data in which information such as the start time, end time, planned power generation amount (kWh), actual power generation amount (kWh), planned demand amount (kWh), and actual demand amount (kWh) are associated is stored.

[0046] The information on the start time is information indicating the start time of one unit time, which is a prediction unit of the planned value at the same time and the same amount. The information on the end time is information indicating the end time of one unit time that starts at the start time indicated by the information on the start time. In the example shown in Figure 3, for example, it shows that the end time of one unit time starting at the start time "9:00" is "9:30".

[0047] The information on the planned power generation amount (kWh) is information indicating the planned value of the power generation amount in one unit time, which is a prediction unit of the planned value at the same time and the same amount. In the example shown in Figure 3, for example, it shows that the planned power generation amount in one unit time from the start time "9:00" to the end time "9:30" is "100 (kWh)".

[0048] The information on the actual power generation amount (kWh) indicates the actual value of the power generation amount in one unit of time, which is the prediction unit of the planned value at the same time and the same amount. The information on the actual power generation amount (kWh) includes the information indicating the actual value of the power generation amount by the solar power generation facility 111A and the information indicating the actual value of the charge and discharge amount of the secondary battery 111B. In the example shown in FIG. 3, for example, it shows that the actual power generation amount by the solar power generation facility 111A in one unit of time from the start time "9:00" to the end time "9:30" is "100 (kWh)". Also, in the example shown in FIG. 3, for example, it shows that the charge and discharge amount of the secondary battery 111B in one unit of time from the start time "9:00" to the end time "9:30" is "0 (kWh)".

[0049] The information on the planned demand amount (kWh) indicates the planned value of the demand amount in one unit of time, which is the prediction unit of the planned value at the same time and the same amount. In the example shown in FIG. 3, for example, it shows that the planned demand amount in one unit of time from the start time "9:00" to the end time "9:30" is "100 (kWh)".

[0050] The information on the actual demand amount (kWh) indicates the actual value of the demand amount in one unit of time, which is the prediction unit of the planned value at the same time and the same amount. The information on the actual demand amount (kWh) includes the information indicating the actual value of the demand amount by the dedicated load facility 121A and the information indicating the actual value of the demand amount by the chiller 121B. In the example shown in FIG. 3, for example, it shows that the actual demand amount by the dedicated load facility 121A in one unit of time from the start time "9:00" to the end time "9:30" is "50 (kWh)". Also, in the example shown in FIG. 3, for example, it shows that the actual demand amount by the chiller 121B in one unit of time from the start time "9:00" to the end time "9:30" is "50 (kWh)".

[0051] FIG. 4 schematically shows an example of the processing flow by the power management device 130. Assume that the starting state in this example is the state where self-delivery has started within one unit time from the start time "9:00" to the end time "9:30". Also assume that in this example, the planned power generation amount and the planned demand amount for each unit time are set to "100 (kWh)".

[0052] The power generation control unit 134 of the power management device 130 generates control data for controlling the power generation amount in that unit time before the start time of the unit time, and sends the control data to the control data transmission unit 136. When the control data transmission unit 136 of the power management device 130 receives the control data for controlling the power generation amount, it transmits the control data to the power conditioner 112. The power conditioner 112 controls the charge and discharge amount of the secondary battery 111B so that the actual value of the power generation amount matches the planned value of the power generation amount indicated by the control data at the start time of that unit time.

[0053] For example, when the actual value of the power generation amount by the solar power generation facility 111A matches the planned value, the power conditioner 112 transmits a control signal for operating the secondary battery 111B in the normal mode to the secondary battery 111B.

[0054] For example, when the actual value of the power generation amount by the solar power generation facility 111A is smaller than the planned value, the power conditioner 112 transmits a control signal for operating the secondary battery 111B in the discharge mode to the secondary battery 111B. At this time, the power conditioner 112 transmits a control signal for discharging the secondary battery 111B so that the discharge amount of the secondary battery 111B matches the difference between the actual value and the planned value of the power generation amount by the solar power generation facility 111A.

[0055] For example, when the actual power generation amount by the solar power generation facility 111A is greater than the planned value, the power conditioner 112 transmits a control signal for operating the secondary battery 111B in the charging mode to the secondary battery 111B. At this time, the power conditioner 112 outputs power to the secondary battery 111B so that the amount of power output to the secondary battery 111B matches the difference between the actual power generation amount by the solar power generation facility 111A and the planned value. Then, when the power output to the secondary battery 111B is completed, the power conditioner 112 transmits a control signal for operating the secondary battery 111B in the normal mode to the secondary battery 111B.

[0056] Then, when the end time of the unit time arrives, the power conditioner 112 transmits measurement data indicating the actual power generation amount per unit time at the power generation location 110 to the power management device 130.

[0057] When the measurement data receiving unit 131 of the power management device 130 receives measurement data indicating the actual power generation amount, it stores the information indicated by the measurement data in the data storage unit 137. When the secondary battery 111B is discharged in one unit time, information as shown in FIG. 5 is stored in the data storage unit 137. When the secondary battery 111B is charged in one unit time, information as shown in FIG. 8 is stored in the data storage unit 137.

[0058] FIG. 5 schematically shows an example of the information stored in the data storage unit 137 when the secondary battery 111B is discharged in one unit time. In the example shown in FIG. 5, the actual power generation amount by the solar power generation facility 111A in one unit time from the start time “9:00” to the end time “9:30” is “80 (kWh)”. Also, in the example shown in FIG. 5, for example, the actual power generation amount of the secondary battery 111B in one unit time from the start time “9:00” to the end time “9:30” is “20 (kWh)”. The secondary battery 111B is a facility used for both power generation and demand, and a positive number indicates power generation by discharge, while a negative number indicates demand by charging.

[0059] FIG. 8 schematically shows an example of information stored in the data storage unit 137 when the secondary battery 111B is charged in a single unit of time. In the example shown in FIG. 8, the actual power generation amount by the solar power generation facility 111A in a single unit of time from the start time “9:00” to the end time “9:30” is “120 (kWh)”. Also, in the example shown in FIG. 8, for example, the power generation amount of the secondary battery 111B in a single unit of time from the start time “9:00” to the end time “9:30” is “-20 (kWh)”. That is, the power generation amount is a negative number, indicating that the secondary battery 111B has been charged.

[0060] On the other hand, the demand control unit 135 of the power management device 130 generates control data for controlling the demand amount in that unit of time before the start time of the unit of time, and sends the control data to the control data transmission unit 136. When the control data transmission unit 136 of the power management device 130 receives the control data for controlling the demand amount, it transmits the control data to the power conditioner 122. The power conditioner 122 controls the demand amount by the chiller 121B so that the actual demand amount matches the planned demand amount indicated by the control data at the start time of that unit of time.

[0061] For example, when the planned demand amount indicated by the control data matches the planned demand amount in the start state, the power conditioner 122 does not change the amount of power output to the chiller 121B in the target unit of time.

[0062] For example, when the planned demand amount indicated by the control data is smaller than the planned demand amount in the start state, the power conditioner 122 decreases the amount of power output to the chiller 121B in the target unit of time. At this time, the power conditioner 122 decreases the amount of power output to the chiller 121B by an amount of power that matches the difference between the planned demand amount indicated by the control data and the planned demand amount in the start state.

[0063] For example, when the planned demand quantity indicated by the control data is greater than the planned demand quantity in the start state, the power conditioner 122 increases the amount of power output to the chiller 121B in the target unit time. At this time, the power conditioner 122 increases the amount of power output to the chiller 121B by an amount of power that matches the difference between the planned demand quantity indicated by the control data and the planned demand quantity in the start state.

[0064] Then, when it reaches the end time of the unit time, the power conditioner 122 transmits measurement data indicating the actual value of the demand quantity per unit time at the demand location 120 to the power management device 130.

[0065] When the measurement data receiving unit 131 receives the measurement data indicating the actual value of the demand quantity, it stores the information indicated by the measurement data in the data storage unit 137. When the demand quantity by the chiller 121B does not change, information as shown in FIGS. 5 and 8 is stored in the data storage unit 137. In the examples shown in FIGS. 5 and 8, the actual demand quantity by the dedicated load facility 121A in one unit time from the start time “9:00” to the end time “9:30” is “50 (kWh)”. Also, in the examples shown in FIGS. 5 and 8, the actual demand quantity by the chiller 121B in one unit time from the start time “9:00” to the end time “9:30” is “50 (kWh)”.

[0066] When the measurement data receiving unit 131 receives the measurement data indicating the actual value of the demand quantity, it stores the information indicated by the measurement data in the data storage unit 137.

[0067] When information on the actual value of the power generation amount is stored in the data storage unit 137, the demand planning unit 133 of the power management device 130 determines whether the secondary battery 111B has been charged and discharged (step S101). For example, the demand planning unit 133 determines that the secondary battery 111B has been charged and discharged when the actual value of the charge and discharge amount of the secondary battery 111B included in the measurement data is not zero.

[0068] When the secondary battery 111B is being charged and discharged (step S101; YES), the demand planning unit 133 determines whether the secondary battery 111B has been discharged (step S102). For example, when the actual value of the charge-discharge amount of the secondary battery 111B included in the measurement data is greater than zero, the demand planning unit 133 determines that the secondary battery 111B has been discharged.

[0069] When the secondary battery 111B is discharging (step S102; YES), the demand planning unit 133 calculates the number of frames in the unit time necessary to reduce the demand by the chiller 121B (step S103). Here, when the secondary battery 111B is discharging in one unit time, the remaining capacity of the secondary battery 111B decreases by an amount corresponding to the discharge amount. When the remaining capacity of the secondary battery 111B is decreasing, there is a possibility that it cannot discharge the necessary power when the actual value of the power generation amount by the solar power generation facility 111A is smaller than the planned value. Therefore, the power generation planning unit 132 of the power management device 130 makes a change to decrease the planned value of the power generation amount by the amount of charge in order to charge the secondary battery 111B after the unit time in which the discharge was performed. On the other hand, the demand planning unit 133 makes a change to decrease the planned value of the demand amount. As described above, the proprietary load facility 121A is a facility necessary for the operator to conduct business activities. Therefore, the demand amount by the proprietary load facility 121A cannot be unnecessarily decreased just because the planned value of the demand amount is decreased. Therefore, the demand amount at the demand location 120 makes an adjustment accompanying the decrease in the planned value of the demand amount by decreasing the power supply to the chiller 121B. As described above, the chiller 121B can adjust the demand amount of power greater than a predetermined amount over a time longer than one unit time. Therefore, the demand planning unit 133 calculates the number of frames in the unit time necessary to reduce the demand by the chiller 121B corresponding to the charge amount of the secondary battery 111B. In this example, the demand planning unit 133 calculates the number of frames in the unit time necessary to reduce the demand by the chiller 121B by 20 (kWh) corresponding to the charge amount of 20 (kWh). Here, assume that the chiller 121B can adjust the demand amount of 8 (kWh) of power over 1 (hour). In that case, the demand planning unit 133 calculates the number of frames in the unit time necessary to reduce the demand by the chiller 121B by 20 (kWh) as 20 / 8 = 5 frames.

[0070] Next, the demand planning unit 133 calculates a planned value for reducing the power demand in the unit time of the required number of frames calculated in step S103 (step S104). For example, the demand planning unit 133 calculates a planned value for reducing the demand to be reduced in each unit time of the required number of frames, starting from the unit time 2 frames after the unit time when the secondary battery 111B is discharged, in an average manner for each unit time. In that case, the demand planning unit 133 targets the unit time of 5 frames counted from the unit time from the start time "10:00" to the end time "10:30". Then, the demand planning unit 133 calculates that the demand to be reduced in each of the 5 frames is 20 / 5 = 4 (kWh). Then, the demand planning unit 133 calculates the planned demand in each of the 5 frames to be 100 - 4 = 96 (kWh).

[0071] Then, the demand planning unit 133 updates the data stored in the data storage unit 137 with the planned demand calculated in step S104 (step S105). When the planned value of the demand is updated corresponding to the discharge of the secondary battery 111B in one unit time, the data storage unit 137 stores information as shown in FIG. 6.

[0072] FIG. 6 schematically shows an example of the information stored in the data storage unit 137 when the planned value is updated corresponding to the discharge of the secondary battery 111B in one unit time. In the example shown in FIG. 6, the planned demand in the unit time of 5 frames counted from the unit time from the start time "10:00" to the end time "10:30" is 96 (kWh).

[0073] When the planned value of the demand is updated, the power generation planning unit 132 of the power management device 130 calculates a planned value of the power generation amount corresponding to the demand in each unit time when the demand decreases (step S106). For example, the power generation planning unit 132 sets the planned power generation amount in each unit time when the demand decreases to the same value as the planned demand amount in each unit time updated in step S105. In the case of this example, the power generation planning unit 132 sets the planned power generation amount in each of the five frames counted from the unit time from the start time "10:00" to the end time "10:30" to 96 (kWh).

[0074] Then, the power generation planning unit 132 updates the data stored in the data storage unit 137 with the planned power generation amount calculated in step S106 (step S107), and ends the process shown in FIG. 4. When the planned power generation amount is updated in response to a decrease in the planned demand amount, information as shown in FIG. 6 is stored in the data storage unit 137.

[0075] When the planned power generation amount is updated, the power generation control unit 134 generates control data indicating the updated planned power generation amount before the start time of the updated unit time, and sends the control data to the control data transmission unit 136. When the control data transmission unit 136 receives the control data indicating the updated planned power generation amount, it transmits the control data to the power conditioner 112. The power conditioner 112 controls the charge amount of the secondary battery 111B so that the actual value of the power generation amount matches the planned value of the power generation amount indicated by the control data at the start time of the unit time when the planned power generation amount is updated.

[0076] Then, when the end time of the unit time arrives, the power conditioner 112 transmits measurement data indicating the actual value of the power generation amount per unit time at the power generation location 110 to the power management device 130.

[0077] When the measurement data receiving unit 131 receives the measurement data indicating the actual value of the power generation amount, it stores the information indicated by the measurement data in the data storage unit 137. When the secondary battery 111B is charged over a plurality of unit times, information as shown in FIG. 7 is stored in the data storage unit 137.

[0078] FIG. 7 schematically shows an example of information stored in the data storage unit 137 when the secondary battery 111B is charged over a plurality of unit times. In the example shown in FIG. 7, the actual value of the charge amount of the secondary battery 111B at each of the five frames counted from the unit time from the start time “10:00” to the end time “10:30” is “4 (kWh)”.

[0079] On the other hand, before the start time of the updated unit time, the demand control unit 135 generates control data indicating the updated planned demand amount, and sends the control data to the control data transmission unit 136. When receiving the control data indicating the updated planned demand amount, the control data transmission unit 136 transmits the control data to the power conditioner 122. When the start time of the unit time at which the planned demand amount is updated arrives, the power conditioner 122 controls the demand amount by the chiller 121B so that the actual value of the demand amount matches the planned value of the demand amount indicated by the control data. In the case of this example, the power conditioner 122 reduces the amount of power output to the chiller 121B in order to reduce the demand amount by the chiller 121B.

[0080] Then, when the end time of the unit time arrives, the power conditioner 122 transmits measurement data indicating the actual value of the demand amount per unit time at the demand location 120 to the power management device 130.

[0081] When the measurement data reception unit 131 receives the measurement data indicating the actual value of the demand amount, it stores the information indicated by the measurement data in the data storage unit 137. When the demand amount by the chiller 121B is reduced over a plurality of unit times, information as shown in FIG. 7 is stored in the data storage unit 137. In the example shown in FIG. 7, the actual demand amount by the chiller 121B at each of the five frames counted from the unit time from the start time “10:00” to the end time “10:30” is “46 (kWh)”.

[0082] When the secondary battery 111B is being charged in step S102 (step S102; NO), the demand planning unit 133 calculates the number of frames per unit time required to increase the demand by the chiller 121B (step S108). Here, when the secondary battery 111B is being charged in one unit time, the remaining capacity of the secondary battery 111B increases by an amount corresponding to the charge amount. When the remaining capacity of the secondary battery 111B is increasing, there is a possibility that it may not be able to charge the necessary power when the actual value of the power generation amount by the solar power generation facility 111A is larger than the planned value. Therefore, the power generation planning unit 132 of the power management device 130 makes a change to increase the planned value of the power generation amount by the amount of the discharge amount so that the secondary battery 111B can be discharged after the unit time in which the charging was performed. On the other hand, the demand planning unit 133 makes a change to increase the planned value of the demand amount. As described above, the proprietary load facility 121A is a facility necessary for the operator to conduct business activities. Therefore, the demand amount by the proprietary load facility 121A cannot be increased unnecessarily just because the planned value of the demand amount is increased. Therefore, the demand amount at the demand location 120 makes adjustments accompanying the increase in the planned value of the demand amount by increasing the supply of power to the chiller 121B. As described above, the chiller 121B can adjust the demand amount of power greater than a predetermined amount over a time longer than one unit time. Therefore, the demand planning unit 133 calculates the number of frames per unit time required to increase the demand by the chiller 121B corresponding to the discharge amount of the secondary battery 111B. In this example, the demand planning unit 133 calculates the number of frames per unit time required to increase the demand by the chiller 121B by 20 (kWh) corresponding to a discharge amount of 20 (kWh). Here, assume that the chiller 121B can adjust the demand amount of 8 (kWh) of power over 1 (hour). In that case, the demand planning unit 133 calculates the number of frames per unit time required to increase the demand by the chiller 121B by 20 (kWh) as 20 / 8 = 5 frames.

[0083] Next, the demand planning unit 133 calculates a planned value for increasing the power demand in the unit time of the required number of frames calculated in step S108 (step S109). For example, the demand planning unit 133 calculates a planned value for increasing the demand to be increased in each unit time of the required number of frames counted from the unit time two frames after the unit time when the secondary battery 111B is charged, on average in each unit time. In that case, the demand planning unit 133 targets the unit time of five frames counted from the unit time from the start time "10:00" to the end time "10:30". Then, the demand planning unit 133 calculates 20 / 5 = 4 (kWh) for the demand to be increased in each of the five frames. And the demand planning unit 133 calculates the planned demand in each of the five frames as 100 + 4 = 104 (kWh).

[0084] Then, the demand planning unit 133 updates the data stored in the data storage unit 137 with the planned demand calculated in step S109 (step S110). When the planned value of the demand is updated corresponding to charging the secondary battery 111B in one unit time, information as shown in FIG. 9 is stored in the data storage unit 137.

[0085] FIG. 9 schematically shows an example of the information stored in the data storage unit 137 when the planned value is updated corresponding to charging the secondary battery 111B in one unit time. In the example shown in FIG. 9, the planned demand in the unit time of five frames counted from the unit time from the start time "10:00" to the end time "10:30" is 104 (kWh).

[0086] When the planned demand value is updated, the power generation planning unit 132 of the power management device 130 calculates a planned value that is the power generation amount corresponding to the demand for each unit time when the demand increases (step S111). For example, the power generation planning unit 132 sets the planned power generation amount for each unit time when the demand increases to the same value as the planned demand for each unit time updated in step S110. In the case of this example, the power generation planning unit 132 sets the planned power generation amount for each of the five units of time counted from the unit time from the start time "10:00" to the end time "10:30" to 104 (kWh).

[0087] Then, the power generation planning unit 132 updates the data stored in the data storage unit 137 with the planned power generation amount calculated in step S111 (step S112), and ends the process shown in FIG. 4. When the planned power generation amount is updated in response to an increase in the planned demand, information as shown in FIG. 9 is stored in the data storage unit 137.

[0088] When the planned power generation amount is updated, the power generation control unit 134 generates control data indicating the updated planned power generation amount before the start time of the updated unit time, and sends the control data to the control data transmission unit 136. When the control data transmission unit 136 receives the control data indicating the updated planned power generation amount, it transmits the control data to the power conditioner 112. When the start time of the unit time when the planned power generation amount is updated arrives, the power conditioner 112 controls the discharge amount of the secondary battery 111B so that the actual value of the power generation amount matches the planned value of the power generation amount indicated by the control data.

[0089] Then, when the end time of the unit time arrives, the power conditioner 112 transmits measurement data indicating the actual value of the power generation amount per unit time at the power generation location 110 to the power management device 130.

[0090] When the measurement data receiving unit 131 receives measurement data indicating the actual value of the power generation amount, it stores the information indicated by the measurement data in the data storage unit 137. When the secondary battery 111B is discharged over a plurality of unit times, information as shown in FIG. 10 is stored in the data storage unit 137.

[0091] FIG. 10 schematically shows an example of information stored in the data storage unit 137 when the secondary battery 111B is discharged over a plurality of unit times. In the example shown in FIG. 10, the actual value of the discharge amount of the secondary battery 111B at each of the five frames counted from the unit time from the start time “10:00” to the end time “10:30” is “4 (kWh)”.

[0092] On the other hand, the demand control unit 135 generates control data indicating the updated planned demand amount before the start time of the updated unit time, and sends the control data to the control data transmission unit 136. When the control data transmission unit 136 receives the control data indicating the updated planned demand amount, it transmits the control data to the power conditioner 122. When the start time of the unit time at which the planned demand amount is updated arrives, the power conditioner 122 controls the demand amount by the chiller 121B so that the actual value of the demand amount at the demand location 120 matches the planned value of the demand amount indicated by the control data. In the case of this example, the power conditioner 122 increases the amount of power output to the chiller 121B in order to increase the demand amount by the chiller 121B.

[0093] Then, when the end time of the unit time arrives, the power conditioner 122 transmits measurement data indicating the actual value of the demand amount per unit time at the demand location 120 to the power management device 130.

[0094] When the measurement data receiving unit 131 receives measurement data indicating the actual value of the demand, it stores the information indicated by the measurement data in the data storage unit 137. When the demand by the chiller 121B is increased over a plurality of unit times, the data storage unit 137 stores information as shown in FIG. 10. In the example shown in FIG. 10, the actual demand by the chiller 121B at each of the five units of time counted from the start time “10:00” to the end time “10:30” is “54 (kWh)”.

[0095] As described above, the present invention has been described using the embodiments. However, the technical scope of the present invention is not limited to the scope described in the above embodiments. It is obvious to those skilled in the art that various changes or improvements can be made to the above embodiments. It is clear from the description of the claims that forms with such changes or improvements can also be included in the technical scope of the present invention.

[0096] In the above embodiment, the solar power generation facility 111A has been described as an example of “other power generation facilities different from the secondary battery”. However, “other power generation facilities different from the secondary battery” are not limited to the solar power generation facility 111A. It is desirable that “other power generation facilities different from the secondary battery” are power generation facilities that utilize renewable energy. For example, in the above embodiment, instead of the solar power generation facility 111A, or in addition to the solar power generation facility 111A, a wind power generation facility, a biomass power generation facility, a hydroelectric power generation facility, a geothermal power generation facility, or a solar thermal power generation facility can be adopted.

[0097] In the above embodiment, the chiller 121B has been described as an example of “specific load equipment”. However, “specific load equipment” only needs to be able to convert electrical energy greater than a predetermined amount into thermal energy and extract it over a time longer than one unit time, and is not limited to the chiller 121B. For example, in the above embodiment, instead of the chiller 121B, or in addition to the chiller 121B, a heat pump, a hydrogen production facility, an ethanol production facility, or an ammonia production facility can be adopted.

[0098] The above-described embodiment has been described by taking as an example the configuration in which the power conditioner 112 and the power management device 130 are communicatively connected via the WAN. However, the communication network for communicatively connecting the power conditioner 112 and the power management device 130 is not limited to the WAN. For example, the power conditioner 112 and the power management device 130 may be communicatively connected via power line communication. Power line communication is a technology that uses a power line as a communication line. Also, for example, the power conditioner 112 and the power management device 130 may be communicatively connected via a LAN (Local Area Network). A LAN is a network that connects computers, communication devices, information devices, etc. within a limited range via cables, radio waves, etc. so that they can communicate with each other.

[0099] The above-described embodiment has been described by taking as an example the configuration in which the power conditioner 122 and the power management device 130 are communicatively connected via the WAN. However, the communication network for communicatively connecting the power conditioner 122 and the power management device 130 is not limited to the WAN. For example, the power conditioner 122 and the power management device 130 may be communicatively connected via power line communication. Also, for example, the power conditioner 122 and the power management device 130 may be communicatively connected via a LAN.

[0100] The above-described embodiment has been described by taking as an example the configuration in which there is one power conditioner 112 in the power generation location 110. However, the power conditioner 112 is not limited to one. For example, there may be a power conditioner 112 for the solar power generation facility 111A and a power conditioner 112 for the secondary battery 111B, and a plurality of power conditioners 112 may be connected to the transformer 113. Alternatively, instead of the AC power generation facility being connected to the power conditioner 112, the AC power generation facility may be directly connected to the transformer 113 as AC.

[0101] The above-described embodiment has been described by taking as an example the configuration in which there is one power conditioner 122 in the demand location 120. However, the number of power conditioners 122 is not limited to one. For example, there may be a power conditioner 112 for the dedicated load facility 121A and a power conditioner 112 for the chiller 121B, and a plurality of power conditioners 122 may be connected to the transformer 123. Alternatively, instead of the AC demand facility being connected to the power conditioner 122, the AC demand facility may be directly connected to the transformer 123 as AC.

[0102] In the claims, the specification, and the drawings, for the operations, procedures, steps, stages, and other processes in the devices, systems, programs, and methods shown, the execution order of each process is not explicitly stated as "earlier than", "preceding", etc. in particular. It should be noted that the execution order of each process can be realized in any order as long as the output of the previous process is not used in the subsequent process. Regarding the operation flows in the claims, the specification, and the drawings, even if "first", "next", etc. are used for convenience in the description, it does not mean that it is essential to implement in this order.

Explanation of Reference Numerals

[0103] 100 Self-delivery system, 110 Power generation location, 111A Solar power generation facility, 111B Secondary battery, 112 Power conditioner, 113 Transformer, 120 Demand location, 121A Dedicated load facility, 121B Chiller, 122 Power conditioner, 123 Transformer, 130 Power management device, 131 Measurement data reception unit, 132 Power generation planning unit, 133 Demand planning unit, 134 Power generation control unit, 135 Demand control unit, 136 Control data transmission unit, 137 Management information storage unit, 200 Power grid

Claims

1. A power management device for managing power in self-delivery that transmits electricity generated by a generator of an operator to a load facility of the operator at another location using the power grid of an electric power company, comprising: a power generation control unit that controls the amount of power generated by the generator including a secondary battery; a demand control unit that controls the demand of the load facility including a specific load facility that can convert and extract electrical energy greater than a predetermined amount into thermal energy over a time longer than one unit time, and comprising: the power generation control unit can control the secondary battery so that the planned value and the actual value of the amount of power generated by the generator match in one unit time; the demand control unit can control the specific load facility so that the planned value and the actual value of the demand of the load facility match in one unit time; when the secondary battery is controlled in one unit time, controls the demand of the load facility over a plurality of unit times after the one unit time; the power generation control unit controls the amount of power generated by the generator over a plurality of unit times when the demand of the load facility is controlled over a plurality of unit times. A power management device.

2. The power generation control unit controls to discharge the secondary battery when the actual value of the amount of power generated by another generator different from the secondary battery is less than the planned value in one unit time; the demand control unit controls to reduce the demand of the specific load facility over a plurality of unit times after the one unit time when the secondary battery is discharged in one unit time; The power generation control unit controls to charge the secondary battery over a plurality of unit times when the demand of the specific load facility decreases over a plurality of unit times. The power management device according to claim 1.

3. The power generation control unit controls to charge the secondary battery when the actual value of the amount of power generated by another generator different from the secondary battery is greater than the planned value in one unit time; the demand control unit controls to increase the demand of the specific load facility over a plurality of unit times after the one unit time when the secondary battery is charged in one unit time; The power generation control unit controls to discharge the secondary battery over a plurality of unit times when the demand of the specific load facility increases over a plurality of unit times. The power management device according to claim 1 or claim 2.

4. a power generation planning unit that calculates a planned value of the power generation amount by the power generation facility in one unit time; a demand planning unit that calculates a planned value of the demand amount by the load facility in one unit time, and comprising: the power generation control unit controls the secondary battery so that the planned value of the power generation amount calculated by the power generation planning unit matches the actual value of the power generation amount in one unit time; the demand control unit controls the specific load facility so that the planned value of the demand amount calculated by the demand planning unit matches the actual value of the demand amount in one unit time, according to any one of claims 1 to 3. The power management device described in the item.

5. when the secondary battery is controlled in one unit time, the demand planning unit calculates a planned value of the demand amount in each of a plurality of unit times after the one unit time; when the planned value of the demand amount in each of the plurality of unit times is calculated, the power generation planning unit calculates a planned value of the power generation amount in each of the plurality of unit times, according to claim 4. The power management device described in the item.

6. A program that causes a computer to function as a power management device that manages power in self-delivery in which electricity generated by a business operator's power generation facility is transmitted to the business operator's load facility at another location using the power grid of an electric power company. a power generation control unit that controls the power generation facility including a secondary battery; a demand control unit that controls the load facility including a specific load facility that can convert electrical energy greater than a predetermined amount into thermal energy and extract it over a time longer than one unit time, causing the computer to function as; the power generation control unit can control the secondary battery so that the planned value and the actual value of the power generation amount by the power generation facility match in one unit time; the demand control unit is in one unit time, the specific load facility can be controlled so that the planned value and the actual value of the demand amount by the load facility match; when the secondary battery is controlled in one unit time, the demand amount by the load facility is controlled over a plurality of unit times after the one unit time; when the demand amount by the load facility is controlled over a plurality of unit times, the power generation control unit controls the power generation amount by the power generation facility over the plurality of unit times.

7. A power management method for managing power in self-delivery, where electricity generated by a business operator's power generation facility is transmitted to the business operator's load facility at another location using the power grid of an electric power company, comprising: controlling the power generation facility including a secondary battery; controlling the load facility including a specific load facility capable of converting electrical energy greater than a predetermined amount into thermal energy and drawing it out over a time longer than one unit time; being able to control the secondary battery so that the planned value and the actual value of the power generation amount by the power generation facility match in one unit time; being able to control the specific load facility so that the planned value and the actual value of the demand amount by the load facility match in one unit time; when the secondary battery is controlled in one unit time, controlling the demand amount by the load facility over a plurality of unit times after the one unit time; A power management method for controlling the power generation amount by the power generation facility over a plurality of unit times when the demand amount by the load facility is controlled over a plurality of unit times.

8. A self-delivery system for transmitting electricity generated by a business operator's power generation facility to the business operator's load facility at another location using the power grid of an electric power company, comprising: a power management device for managing power in self-delivery; The power management device includes: a power generation control unit for controlling the power generation facility including a secondary battery; a demand control unit for controlling the load facility including a specific load facility capable of converting electrical energy greater than a predetermined amount into thermal energy and drawing it out over a time longer than one unit time; The power generation control unit is able to control the secondary battery so that the planned value and the actual value of the power generation amount by the power generation facility match in one unit time; The demand control unit: is able to control the specific load facility so that the planned value and the actual value of the demand amount by the load facility match in one unit time; when the secondary battery is controlled in one unit time, controls the demand amount by the load facility over a plurality of unit times after the one unit time; The power generation control unit controls the power generation amount by the power generation facility over a plurality of unit times when the demand amount by the load facility is controlled over a plurality of unit times. A self-delivery system.

Images