Power supply-demand adjustment system, power supply-demand adjustment method, and program

Abstract

A power supply-demand adjustment system (1) for adjusting power supply to and power demand from a consumer provided with a water heater (300) inside a pipe comprises: a boiling power amount prediction unit (103) for predicting an amount of power required for future boiling from a past power consumption record of the water heater (300); a power procurement price prediction unit (205) for predicting a power procurement price for each future fixed period on the basis of a past power procurement price record; a boiling planning unit (104) for planning a boiling schedule (105) for determining a boiling shift-destination period in which the power procurement cost is the lowest on the basis of the power procurement price predicted by the power procurement price prediction unit (205), and consuming at least a portion of the required boiling power amount in the boiling shift-destination period; and a water heater control unit (106) for controlling the water heater (300) in the pipe according to the boiling schedule (105).

Description

Power supply and demand adjustment system, power supply and demand adjustment method, and program

[0001] The present disclosure relates to a power supply and demand adjustment system, a power supply and demand adjustment method, and a program.

[0002] Various techniques are known for reducing the cost of procuring electricity for supply to consumers by electric power companies. For example, Patent Literature 1 describes an electric power demand procurement support server that procures electricity from the wholesale electricity market by bidding based on a position based on the demand forecast amount, electricity trading information, history, etc. of each electric power consumer, and generates a power generation plan and a supply and demand plan for the next day.

[0003] JP 2018-77834 A

[0004] Many consumers have storage-type hot water heaters. For such consumers, it is expected that they can further reduce their electricity procurement costs by adjusting the time the water heater heats up. However, the technology described in the cited document 1 does not mention how to manage the hot water heater, so such an effect cannot be achieved.

[0005] The present disclosure has been made in consideration of the above-described circumstances, and aims to provide a power supply and demand adjustment system and the like that can further reduce power procurement costs for power companies.

[0006] In order to achieve the above-mentioned object, the electricity supply and demand adjustment system of the present disclosure is an electricity supply and demand adjustment system that adjusts the supply and demand of electricity to consumers equipped with water heaters in a pipe, and includes: a water heater energy amount prediction unit that predicts the future amount of electricity required for water heaters from the actual power consumption of the water heaters; a power procurement price prediction unit that predicts the electricity procurement price at regular intervals in the future based on the actual electricity procurement price; a water heater planning unit that determines a water heater shift period that will minimize the electricity procurement cost based on the electricity procurement price predicted by the electricity procurement price prediction unit, and creates a water heater schedule in which at least a portion of the amount of electricity required for water heaters is consumed in the water heater shift period; and a water heater control unit that controls the water heaters in the pipes in accordance with the water heater schedule.

[0007] According to the present disclosure, it is possible to further reduce the power procurement costs of power companies.

[0008] FIG. 1 is a diagram showing the overall configuration of a power supply and demand adjustment system according to an embodiment of the present disclosure. FIG. 2 is a block diagram showing the configuration of an equipment management device according to an embodiment of the present disclosure. FIG. 3 is a block diagram showing the configuration of a power management device according to an embodiment of the present disclosure. FIG. 4 is a block diagram showing the configuration of a power supply and demand adjustment system according to an embodiment of the present disclosure.

[0009] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings, in which the same or corresponding parts are designated by the same reference numerals.

[0010] An electric power supply and demand adjustment system 1 according to an embodiment of the present disclosure will be described. The configuration of the electric power supply and demand adjustment system 1 is shown in FIG. The electric power supply and demand adjustment system 1 is a system that adjusts the supply and demand of electric power to each consumer 800 within a service area, and includes an equipment management device 100 and a power management device 200. All consumers 800 within a service area are equipped with a water heater 300, a power measuring device 400, and a controller 500. Furthermore, some consumers 800 within a service area are equipped with power generation equipment 600 such as solar panels.

[0011] The water heater 300 is a storage-type water heater equipped with a hot water storage tank and a heat pump. The water heater 300 stores water in the hot water storage tank and heats it using the heat pump. The hot water storage tank can store several hundred liters of water. The water heater 300 consumes a considerable amount of electricity to boil a large amount of water in the hot water storage tank during heating, but once the water is boiled, residents can use the boiled water (hot water).

[0012] Furthermore, water heater 300 has a communication function for transmitting the value of the power consumption. Water heater 300 measures the amount of power consumed for each five-minute period, for example, and transmits the measured value to controller 500. Every time controller 500 receives a value of the amount of power consumed from water heater 300, it transmits the value to device management device 100 via network 700.

[0013] The power measuring device 400 is a smart meter that has a function of measuring the power used by the consumer 800 and a communication function of transmitting the measured power value. The power used by the consumer 800 includes the power used by the water heater 300, as well as the power used by air conditioners, lighting equipment, cooking appliances, and the like (not shown). The power measuring device 400 measures the amount of power consumed within the consumer 800 during that 30-minute period, for example, every 30 minutes, and transmits the measured value to the controller 500.

[0014] Controller 500 is a control device that complies with the standards of the HEMS (Home Energy Management System), and controls the operation of various electrical appliances in consumer facility 800. Controller 500 acquires the value of the amount of power consumed by consumer facility 800 from power measuring device 400 every 30 minutes, and transmits the value to power management device 200 via network 700. Controller 500 also acquires the value of the amount of power consumed by water heater 300 from water heater 300 every 5 minutes, and transmits the value to equipment management device 100 via network 700.

[0015] Each consumer 800 may be a detached house or a unit in a housing complex such as a condominium or apartment. In this embodiment, each consumer 800 is equipped with a water heater 300, a power meter 400, and a controller 500.

[0016] The equipment management device 100 is a computer for monitoring and controlling the water heaters 300 in the customer 800 via the network 700. For example, the equipment management device 100 acquires the values ​​of the power consumption of the water heaters 300 via the network 700. The equipment management device 100 also controls the water heaters 300 by transmitting water heater commands to the water heaters 300 via the network 700.

[0017] As shown in FIG. 2 , the device management device 100 includes a control unit 110, a storage unit 120, and a communication unit 130. The control unit 110 includes a central processing unit (CPU), read-only memory (ROM), random access memory (RAM), etc., and controls the device management device 100. The storage unit 120 includes non-volatile semiconductor memory such as flash memory, erasable programmable read-only memory (EPROM), or electrically erasable programmable ROM (EEPROM). The storage unit 120 stores programs and data used by the control unit 110 to execute various processes, and stores data generated or acquired by the control unit 110 executing various processes. The communication unit 130 has a function of connecting to a network 700 and communicates with each device connected to the network 700 under the control of the control unit 110.

[0018] Returning to Fig. 1 , the power management apparatus 200 is a computer for monitoring and controlling the power consumption of the consumer 800. For example, the power management apparatus 200 acquires the value of the power consumption amount of the consumer 800 via the network 700. The power management apparatus 200 also performs processing for procuring the power required by the consumer 800 from the electricity market.

[0019] As shown in FIG. 3 , the power management apparatus 200 includes a control unit 220, a storage unit 230, and a communication unit 240. The control unit 220 includes a CPU, ROM, RAM, etc., and performs overall control of the power management apparatus 200. The storage unit 230 includes non-volatile semiconductor memory such as flash memory, EPROM, and EEPROM. The storage unit 230 stores programs and data used by the control unit 220 to execute various processes, and stores data generated or acquired by the control unit 220 executing various processes. The communication unit 240 has a function of connecting to a network 700, and communicates with each device connected to the network 700 under the control of the control unit 220.

[0020] 4 shows the functional configuration of the power supply and demand adjustment system 1. The equipment management device 100 includes a water heater power collection unit 101, a water heater power history storage unit 102, a water boiling power amount prediction unit 103, a water boiling planning unit 104, a water boiling schedule 105, a water heater control unit 106, a water boiling adjustment unit 107, and a water heater specific information storage unit 108.

[0021] The water heater power collection unit 101 acquires the power consumption value of each water heater 300 from each controller 500 in the pipe every five minutes, and stores the value in the water heater power history storage unit 102 as past performance.

[0022] The water heater power history storage unit 102 stores the actual values ​​of the amount of power of each water heater 300 collected by the water heater power collection unit 101 for the most recent 14 days.

[0023] The water boiling power amount prediction unit 103 predicts the amount of power required for water boiling in the future (for the next day) from the past actual values ​​of the amount of power used by the water heater 300 stored in the water heater power history storage unit 102. In the following description, the amount of power predicted by the water boiling power amount prediction unit 103 will also be referred to as the amount of power required for water boiling.

[0024] The water heater planning unit 104 determines an operation plan for the water heater 300 so as to reduce the power procurement cost. Specifically, the water heater planning unit 104 determines a water heater shift period that will reduce the power procurement cost most based on the power procurement price predicted by the power procurement price prediction unit 205 (described later) and information specific to each water heater 300 stored in the water heater specific information storage unit 108 (described later), and creates a water heater schedule 105 that shifts at least a portion of the amount of power required for water heater to the water heater shift period.

[0025] The water heater control unit 106 controls each water heater 300 in the pipe according to the water heater schedule 105 created by the water heater planning unit 104.

[0026] The water heating adjustment unit 107 identifies a water heater 300 that can increase or decrease the amount of electricity equivalent to the adjustment power amount calculated by the adjustment command unit 210 described later, and instructs the identified water heater 300 to perform water heating operation that differs from operation in accordance with the water heating schedule 105 by the water heater control unit 106.

[0027] The water heater-specific information storage unit 108 stores information specific to each water heater 300 in the pipe. Specifically, the water heater-specific information storage unit 108 stores information indicating the rated power consumption, maximum hot water storage capacity, current hot water volume, heating capacity, heat retention efficiency, etc. of each water heater 300. The rated power consumption of a water heater 300 is the power consumption when the water heater 300 is operated at maximum output, and corresponds to the maximum power consumption of the water heater 300.

[0028] The power management device 200 includes a power collection unit 201, a power history memory unit 202, a power demand forecasting unit 203, a power procurement price actual performance memory unit 204, a power procurement price forecasting unit 205, a power procurement planning unit 206, a power procurement schedule 207, a power procurement unit 208, a power generation control unit 209, and an adjustment command unit 210.

[0029] The power collection unit 201 acquires the power consumption value of each consumer 800 from each controller 500 of the consumer 800 within its service area every 30 minutes, and stores the value in the power history storage unit 202 as the past performance.

[0030] The power history storage unit 202 stores the actual values ​​of the amount of power of each consumer 800 collected by the power collection unit 201 for the most recent 14 days.

[0031] The power demand forecasting unit 203 forecasts the amount of power demand for all consumers 800 in the area for a certain period of time in the future (next day) based on the actual power consumption values ​​of each consumer 800 stored in the power history memory unit 202.

[0032] The actual value of the procurement price of electricity procured in the past is stored in the power procurement price record storage unit 204. The procurement price is expressed, for example, as the amount required to procure a unit amount of electricity.

[0033] The power procurement price prediction unit 205 predicts the power procurement price in the jurisdiction every 30 minutes for the next day based on the actual procurement price values ​​stored in the power procurement price actual result storage unit 204 .

[0034] The power procurement planning unit 206 determines the amount of power required to be procured within the jurisdiction for each fixed time period the next day based on the amount of power demand predicted by the power demand forecasting unit 203 and the power boiling plan (power boiling schedule 105) for each fixed time period devised by the power boiling planning unit 104, and creates a power procurement schedule 207.

[0035] The power procurement unit 208 procures the required amount of power from the power market or the power generation facility 600 based on the power procurement schedule 207 .

[0036] The power generation control unit 209 is connected to a power generation facility 600 in the pipeline, and controls the power generation facility 600 so as to generate at least the required amount of power to be procured from the power generation facility 600 .

[0037] When a difference occurs between the actual amount of power consumption in the service area and the amount of power required to be procured, the adjustment command unit 210 calculates the amount of power to be adjusted to compensate for the difference.

[0038] Next, a description will be given of the water heater control process executed by the power supply and demand adjustment system 1. The power supply and demand adjustment system 1 always executes in parallel a process in which the water heater power collection unit 101 of the equipment management device 100 collects the amount of power consumed by the water heater 300 every five minutes and stores it in the water heater power history storage unit 102, and a process in which the power collection unit 201 of the power management device 200 collects the amount of power consumed by the consumer 800 every 30 minutes and stores it in the power history storage unit 202. In parallel with these processes, the water heater control process shown in Fig. 5 is executed at 7:00 a.m. every day in a separate thread.

[0039] When the water heater control process is started, first, the water heater power amount prediction unit 103 of the equipment management device 100 executes a water heater power amount required prediction process (step S11) to predict the amount of power required for water heater heating for the next day based on the actual values ​​of the past power amounts of each water heater 300 stored in the water heater power history storage unit 102. The water heater power amount required prediction process will be described in detail using the flowchart of FIG.

[0040] First, the water heating power prediction unit 103 calculates the average power consumption per 30 minutes for all water heaters 300 in the pipe in one day from the power consumption history of each water heater 300 in the pipe for the last 14 days stored in the water heater power history memory unit 102 (step S111).

[0041] The average power consumption per 30 minutes calculated in step S111 includes the amount of water heating shifted to daytime hours (9:00 AM to 7:00 PM). Therefore, the water heating power amount prediction unit 103 shifts the average power consumption calculated in step S111 for the daytime hours to the late-night hours (12:00 AM to 6:00 AM) (step S112). The shifting method for the late-night hours is arbitrary, but it should not exceed the upper limit of the power consumption per 30 minutes for all water heaters 300. The upper limit of the power consumption per 30 minutes for all water heaters 300 can be calculated from the rated power consumption of each water heater 300 stored in the water heater-specific information storage unit 108. For example, if there are five water heaters 300 with a rated power consumption of 1 kW and five water heaters 300 with a rated power consumption of 2 kW in the same pipe, the upper limit of the power consumption per 30 minutes is 7.5 kWh. The boiling power amount prediction unit 103 may store an average value of the rated power consumption of each water heater 300, calculate an upper limit of the power consumption per 30 minutes for each water heater 300 from this average value, and add these values ​​up for the number of water heaters 300 in the pipe to calculate an upper limit of the power consumption per 30 minutes for all water heaters 300.

[0042] For example, consider a case where the average power consumption of the entire water heater 300 is calculated in step S111 as shown in Fig. 7. In this case, in step S112, as shown in Fig. 8, part A of the average power consumption during the daytime hours is shifted to part B of the average power consumption during the nighttime hours within a range that does not exceed the upper limit value Z of the power consumption per 30 minutes described above.

[0043] 6 , the water-heating power amount prediction unit 103 then calculates the amount of power required for water-heating for one day for all of the water heaters 300 from the average power consumption of all of the water heaters 300 shifted in step S112 (step S113). Note that the amount of power required for water-heating for one day may also be calculated from the average power consumption of all of the water heaters 300 that are not shifted in step S112. This completes the process of predicting the amount of power required for water-heating.

[0044] Returning to FIG. 5 , once the process for predicting the required energy for water heating is completed, the power demand prediction unit 203 of the power management device 200 predicts the amount of energy demand for all of the consumers 800 in the service area for each fixed period (every 30 minutes) in the future (the next day) (step S12). Specifically, the power demand prediction unit 203 may predict the amount of energy demand by averaging the actual values ​​of the power consumption of each consumer 800 stored in the power history storage unit 202. Note that, at this time, it is desirable for the power demand prediction unit 203 to predict the amount of energy demand in the case where the water heater 300 does not shift the water heating to daytime hours. That is, the power demand prediction unit 203 performs a process of returning the water heating shift from daytime hours to late-night hours (a process of returning to a state where no shift was performed), as described in FIG. 8 , and then predicts the amount of energy demand for all of the consumers 800 for each fixed period (every 30 minutes) in the future (the next day).

[0045] Next, the power procurement price prediction unit 205 of the power management device 200 predicts the power procurement price in the jurisdiction every 30 minutes for the next day based on the actual power procurement price values ​​stored in the power procurement price actual value memory unit 204 (step S13).

[0046] Next, the water heating planning unit 104 of the equipment management device 100 executes a water heating schedule creation process to create a water heating schedule 105 for the water heater 300 so as to reduce the power procurement cost based on the power procurement price predicted in step S13 (step S14). The water heating schedule creation process will be described in detail with reference to FIG. 9.

[0047] When the water heating schedule creation process begins, the water heating planning unit 104 first calculates the amount of electricity (daytime water heating electricity amount) that will be shifted from nighttime (0:00-6:00) to daytime (9:00-19:00) for the entire water heater 300 (step S141).

[0048] Here, we will explain in detail how the daytime heating power consumption is calculated. Each water heater 300 in the pipe basically predicts the daytime heating power consumption to shift from nighttime to daytime just before nighttime heating begins (e.g., around 11:00 PM) every day and performs heating operation according to the prediction. For example, at 11:00 PM, each water heater 300 calculates the daily required power consumption for heating based on the hot water usage over a certain period of time in the past (e.g., the last two weeks), the remaining amount of hot water in the tank, etc., and predicts the daytime heating power consumption by shifting a portion of that amount, e.g., 30%, to daytime. Note that various methods for predicting the daytime heating power consumption by each water heater 300 are possible, and this is not a limitation. Therefore, the water heater planning unit 104 obtains the most recent predicted daytime heating power consumption values ​​from each water heater 300 in the pipe and adds them up to calculate the daytime heating power consumption for all water heaters 300. In addition, the water heating planning unit 104 may calculate the daytime water heating power consumption for all water heaters 300 from the average value of the predicted daytime water heating power consumption values ​​predicted by each water heater 300 in the pipe for the most recent predetermined number of days (e.g., 14 days).

[0049] Next, the water heater planning unit 104 calculates the duration of the shift period for the daytime water heater shift (shift duration) (step S142). Specifically, as shown in FIG. 10 , the water heater planning unit 104 allocates the daytime water heater power amount calculated in step S141 to each water heater 300 (water heaters A to C) in the pipe in sequence every 30 minutes, in units of the upper limit of the power consumption per 30 minutes. Therefore, in this figure, the height of each rectangle whose area represents the power consumption of water heaters A to C represents the upper limit of the power consumption (rated power consumption) of water heaters A to C. Then, the water heater planning unit 104 calculates the shift duration as the time equivalent to the number of 30-minute frames when all the daytime water heater power amounts are allocated. That is, in FIG. 10 , the shift duration is calculated to be 90 minutes.

[0050] Next, the water boiling planning unit 104 identifies a time slot during the daytime (9:00 AM to 5:00 PM) with a shift duration that will result in the lowest electricity procurement cost based on the electricity procurement price predicted in step S13 (step S143). For example, if the shift duration predicted in step S13 is 90 minutes, the water boiling planning unit 104 can identify a time slot with the lowest electricity procurement cost from time slots t1 to t14 by shifting the 90-minute shift duration in increments of 30 minutes within the range of 9:00 AM to 5:00 PM, such as time slot t1 from 9:00 AM to 10:30 AM, time slot t2 from 9:30 AM to 11:00 AM, ..., time slot t14 from 3:30 PM to 5:00 PM, by referring to the predicted procurement price each time, as shown in FIG.

[0051] Next, the water heating planning unit 104 creates a water heating schedule 105 for heating water by each water heater 300 during the time period of the shift duration identified in step S143 (step S144). This completes the water heating schedule creation process.

[0052] Returning to Figure 5, when the boiling schedule creation process is completed, the power procurement planning unit 206 of the power management device 200 determines the amount of power required to be procured within the pipe at regular intervals (every 30 minutes) on the following day based on the amount of power demand within the pipe predicted in step S12 and the boiling schedule 105 created by the boiling planning unit 104, and creates a power procurement schedule 207 (step S15).

[0053] Then, the power procurement unit 208 performs processing (for example, bidding on the power market) to procure the required amount of power from the power market or from power generation facilities 600 within its jurisdiction in accordance with the created power procurement schedule 207 (step S16).

[0054] Next, the water heater control unit 106 starts controlling the hot water supply of each water heater 300 in the pipe by, for example, registering the boiling schedule 105 created in step S14 in a schedule management tool (step S17). As a result, each water heater 300 performs the hot water supply process at the time specified in the boiling schedule 105.

[0055] Next, when the time for power procurement specified in the power procurement schedule 207 arrives (step S18; Yes), the power generation control unit 209 controls the power generation equipment 600 within the jurisdiction to generate at least the amount of power required to be procured (step S19).

[0056] Furthermore, if there is a difference between the actual power consumption within the pipe, which is updated from time to time in the power history memory unit 202, and the amount of power required to be procured that is greater than a predetermined standard (step S20; Yes), the adjustment command unit 210 calculates the amount of adjustment power to make up for the difference (step S21).

[0057] Then, the water heating adjustment unit 107 of the equipment management device 100 identifies the water heaters 300 that can compensate for the calculated amount of regulated power, and individually controls the identified water heaters 300 (step S22). For example, the water heating adjustment unit 107 controls the operation of the identified water heaters 300 by appropriately transmitting a power reduction command, a power increase command, or the like to the identified water heaters 300 that are in a water heating operation or are scheduled to heat water within 30 minutes, according to the amount of regulated power.

[0058] Then, when the date changes to midnight (step S23; Yes), the water heater control process ends. If the date has not changed (step S23; No), the process returns to step S18.

[0059] According to the present disclosure, the water heating shift period that will result in the lowest electricity procurement costs is determined based on the predicted electricity procurement price at each fixed time period, and the water heating of each water heater 300 in the pipe is controlled during the shift period, thereby making it possible to further reduce the electricity procurement costs of the electric power company.

[0060] (Modifications) The present disclosure is not limited to the above-described embodiment, and various modifications are naturally possible within the scope of the gist of the present disclosure.

[0061] In step S142 of the water heating schedule creation process, the shift duration was calculated by allocating the daytime water heating power amount to each water heater 300 in increments of the upper limit of the power consumption every 30 minutes ( FIG. 10 ), but the method of calculating the shift duration is not limited to this. For example, when multiple water heaters 300 in a pipe start heating at the same time, the water heating planning unit 104 may calculate the shift duration as the time required for all of the multiple water heaters 300 to complete heating.

[0062] In the above embodiment, one water heating shift period is determined, and the water heater 300 is controlled to heat water during that water heating shift period. However, it is also possible to determine multiple water heating shift periods by dividing the determined one water heating shift period, and control the water heater 300 to heat water during each of the water heating shift periods.

[0063] For example, the power supply and demand adjustment system 1 may be configured by a single device that integrates the functions of the equipment management device 100 and the power management device 200. Furthermore, by applying a program executed by such a single device to an existing computer, it is also possible to cause the computer to function as the power supply and demand adjustment system 1 according to the present disclosure.

[0064] Such a program may be distributed by any method, for example, by storing it on a computer-readable recording medium such as a CD-ROM (Compact Disk Read-Only Memory), a DVD (Digital Versatile Disk), an MO (Magneto Optical Disk), or a memory card, or by distributing it via a communication network such as the Internet.

[0065] The present disclosure allows various embodiments and modifications without departing from the broad spirit and scope of the present disclosure. Furthermore, the above-described embodiments are intended to explain the present disclosure and do not limit the scope of the present disclosure. That is, the scope of the present disclosure is defined by the claims, not the embodiments. Various modifications made within the scope of the claims and the meaning of equivalent disclosures are considered to be within the scope of the present disclosure.

[0066] 1 Power supply and demand adjustment system, 100 Equipment management device, 200 Power management device, 300 Water heater, 400 Power meter, 500 Controller, 600 Power generation equipment, 700 Network, 800 Consumer, 101 Water heater power collection unit, 102 Water heater power history memory unit, 103 Water heating power amount prediction unit, 104 Water heating planning unit, 105 Water heating schedule, 106 Water heater control unit, 107 Water heating adjustment unit, 108 Water heater specific information memory unit, 110, 220 Control unit, 120, 230 Memory unit, 130, 240 Communication unit, 201 Power collection unit, 202 Power history memory unit, 203 Power demand prediction unit, 204 Power procurement price actual memory unit, 205 Power procurement price prediction unit, 206 Power procurement planning unit, 207 Power Procurement Schedule, 208 Power Procurement Department, 209 Power Generation Control Department, 210 Coordination Command Department

Claims

1. An electric power supply and demand adjustment system that adjusts the supply and demand of electric power to consumers equipped with hot water heaters in a pipe, A water heating power amount prediction unit that predicts a future required water heating power amount based on the power consumption record of the water heater; A water heating planning unit that determines a water heating shift period in which the power procurement cost will be the lowest based on the power procurement price at each fixed time in the future, and creates a water heating schedule in which at least a part of the required power amount for water heating is consumed in the water heating shift period; A water heater control unit that controls the water heater in the pipe according to the boiling schedule; an electric power demand forecasting unit that forecasts a future electric power demand amount for each fixed time period within the pipe based on a power consumption record within the pipe; a power procurement planning unit that determines a future amount of power required to be procured for each fixed time period within the pipe based on the demanded power amount predicted by the power demand forecasting unit and the boiling schedule created by the boiling planning unit; An electricity supply and demand adjustment system equipped with:

2. a power procurement unit that procures the required amount of electricity determined by the power procurement planning unit from an electricity market or a power generation facility within the jurisdiction; The power supply and demand adjusting system according to claim 1 , further comprising:

3. a power generation control unit that controls the power generation equipment in the pipe to generate at least a portion of the required amount of power procured by the power procurement unit; The power supply and demand adjusting system according to claim 2 , further comprising:

4. The water heating planning unit determines a plurality of water heating shift periods and creates the water heating schedule in which at least a portion of the required water heating energy is consumed in the plurality of water heating shift periods. The power supply and demand adjusting system according to any one of claims 1 to 3.

5. The power demand prediction unit predicts the amount of power demand for each fixed time in the future in a case where the water heater is not shifted. The power supply and demand adjusting system according to claim 1 or 2.

6. an adjustment command unit that calculates an adjustment power amount for the water heating power amount planned for at least one time period from the present time onward among the water heating power amounts during the water heating shift destination period determined by the water heating planning unit when a difference occurs between the actual power consumption amount for each fixed time period within the water pipe and the amount of power procurement required for each fixed time period within the water pipe determined by the power procurement planning unit that is equal to or exceeds a predetermined standard; A water heater control unit that controls the water heater to perform a water heating operation different from the water heater control unit, and a water heater control unit that controls the water heater to perform a water heating operation different from the water heater control unit. The power supply and demand adjustment system according to claim 1 or 2, further comprising:

7. A method for adjusting power supply and demand to adjust power supply and demand to a consumer equipped with a water heater in a pipe, comprising: A water heating power amount prediction step of predicting a future required water heating power amount based on the power consumption record of the water heater; A water heating planning step of determining a water heating shift period in which the power procurement cost will be the lowest based on the power procurement price at each fixed time in the future, and creating a water heating schedule in which at least a part of the required water heating power amount is consumed in the water heating shift period; a water heater control step of controlling the water heater in the pipe according to the water heating schedule; an electric power demand forecasting step of forecasting a future electric power demand amount for each fixed time period within the pipe based on a power consumption record within the pipe; a power procurement planning step of determining a future amount of power required to be procured for each fixed time period within the pipe based on the demanded power amount predicted in the power demand prediction step and the boiling schedule created in the boiling planning step; The power supply and demand adjustment method includes the steps of:

8. A computer that adjusts the supply and demand of electricity to customers equipped with hot water heaters in the pipes. a water heating power amount prediction unit that predicts a future amount of power required for water heating based on the power consumption record of the water heater; a water heating planning unit that determines a water heating shift period in which the power procurement cost will be the lowest based on the power procurement price at each fixed time in the future, and creates a water heating schedule in which at least a part of the power required for water heating is consumed in the water heating shift period; a water heater control unit that controls the water heater in the pipe according to the boiling schedule; an electric power demand forecasting unit that forecasts a future electric power demand amount for each fixed time period within the pipe based on the actual electric power consumption amount within the pipe; a power procurement planning unit that determines a future amount of power required to be procured for each fixed time period within the pipe based on the amount of demanded power predicted by the power demand forecasting unit and the boiling schedule created by the boiling planning unit; A program that functions as a