JP2016038163A - Hot water feeder control device, hot water feeder control system, hot water feeder controlling method and hot water feeder control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot water feeder control device capable of leveling a total sum of electrical power supplied from a high voltage total electricity receiving service business to each of householders when a plurality of hot water feeders are operated in the case that the high voltage total electricity receiving service business supply electrical power to each of householders of housing complex where a plurality of households have hot water feeders installed therein.SOLUTION: Hot water feeder information derivation means 51 derives an operating time and a consumption power of a hot water feeder of each of the householders in the housing complex on the basis of weather information near housing complex including a plurality of households having hot water feeders and hot water feeder state information. Control means 52 controls the hot water feeder and a battery of each of the households on the basis of an operating time and a consumption power of the hot water feeder of each of the households and a total use electrical power of the housing complex.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a water heater control device, a water heater control system, a water heater control method, and a water heater control program for controlling operation time zones of a plurality of water heaters and power supply to the plurality of water heaters.

  As a mode of supplying power to each household of an apartment house such as an apartment, there is a mode in which a high-voltage collective power receiving service provider supplies power to each household. Hereinafter, a case where the apartment house is an apartment will be described as an example. FIG. 11 is a schematic diagram illustrating a mode in which the high-voltage collective power receiving service provider supplies power to each household in the apartment. The high-voltage collective power receiving service provider has a power receiving facility 92 that collectively receives high-voltage power from the electric power company 91, and concludes a high-voltage collective power receiving contract with the electric power company 91. The power receiving facility 92 collectively receives high-voltage power from the power company 91 and distributes the power to each household 94 in the apartment 93. The high-voltage collective power receiving service provider can purchase electric power from the electric power company 91 at a low price by collectively receiving the high-voltage electric power from the electric power company 91. As a result, the high-voltage collective power receiving service provider can supply power to each household 94 of the apartment 93 at a low price. Accordingly, the price of power purchased by each household 94 from the high-voltage collective power receiving service provider is lower than when each household purchases power from the power company 91 separately.

  The price at which the high-voltage collective power receiving service provider purchases power from the power company 91 is determined every fixed contract period (for example, every year). At that time, when the peak value of the power received by the power receiving facility 92 from the power company 91 becomes high because the households 94 in the condominium 93 simultaneously use power during the previous contract period, The power purchase price of the power receiving service provider is set higher. Therefore, it is preferable that the total amount of power supplied to each household 94 in the apartment 93 by the power receiving facility 92 is leveled with respect to changes in time. In other words, it is preferable not to generate a time zone in which the total amount of power supplied from the power receiving facility 92 to each household 94 is prominent.

  In recent years, natural refrigerant heat pump water heaters have become widespread. A natural refrigerant heat pump water heater is an electric water heater that uses carbon dioxide as a refrigerant and boiles hot water with the heat of air using a heat pump.

  Patent Document 1 describes a system that predicts the heat demand of a heat pump water heater and obtains the amount of power consumed by the heat pump water heater necessary to obtain the heat of the heat demand. The system described in Patent Document 1 detects the air temperature at the installation location of the heat pump water heater, and obtains the power consumption of the heat pump water heater using a coefficient of performance corresponding to the air temperature. And the system of patent document 1 starts discharge of a storage battery, when the amount of electrical storage of a storage battery is more than the power consumption of a heat pump water heater. Patent Document 1 describes that a heat pump water heater boils hot water at night.

  Further, Patent Document 2 calculates the required boiling heat amount and the required boiling temperature of the heat pump unit in the midnight time zone, and completes the boiling of the required boiling heat amount by the end time of the midnight time zone. A system for calculating the boiling start time is described.

JP 2012-244780 A (paragraphs 0026, 0048, 0050, 0059, etc.) JP 2010-145072 (paragraphs 0077, 0078, etc.)

  Each household in the apartment may have a natural refrigerant heat pump water heater (hereinbelow, simply referred to as a heat pump water heater). Generally, the operation time zone of the heat pump water heater is often set at night when power consumption by various devices is low. Here, the operation of the heat pump water heater is an operation in which the heat pump water heater turns water into hot water. At night, power consumption by various devices is low. However, there are many households in the apartment. Therefore, even if the heat pump water heater of each household is operated at night and the operation time zone of the heat pump water heater of each household is shifted within the night time zone, the operation time zones of multiple heat pump water heaters overlap and operate simultaneously The sum total of the electric power supplied with respect to the several heat pump water heater to do may become high.

  In such a case, assuming that the high-voltage collective power receiving service provider supplies power to each household in the apartment, even if the heat pump water heater of each household is operated at night, the high-voltage collective power receiving service provider However, the peak value of the power received collectively from the power company becomes high. Then, in the next contract period, the price of electricity purchased by the high-voltage collective power receiving service provider from the power company will rise, and the selling price when the high-voltage collective power receiving service provider sells power to each household in the apartment will also increase. End up.

  Therefore, the present invention provides a high-voltage batch power receiving service provider for supplying electric power to each household of an apartment house where hot water heaters are arranged in a plurality of households. An object is to provide a water heater control device, a water heater control system, a water heater control method, and a water heater control program capable of leveling the total power supplied to each household from a collective power receiving service provider. .

  The water heater control device according to the present invention is based on weather information in the vicinity of an apartment house including a plurality of households having water heaters, and water heater status information indicating the status of the water heaters of each household in the apartment house. Based on the hot water heater information deriving means for deriving the operation time and power consumption of the water heater, the operation time and power consumption of the water heater of each household, and the total power consumption of the apartment house, the water heater and storage battery of each household are determined. And a control means for controlling.

  The water heater control system according to the present invention includes a water heater disposed in each household in the apartment house, a storage battery disposed in each household, a water heater disposed in each household, and operating the water heater and storage battery in the household. A hot water supply controller that includes a household control means and a water heater controller that controls the water heaters and storage batteries of each household, and the water heater controller indicates the weather information in the vicinity of the apartment house and the state of the water heater of each household. Based on the information, the hot water heater information deriving means for deriving the operating time and power consumption of the water heater of each household, the operating time and power consumption of the water heater of each household, and the total power consumption of the apartment house Control means for determining the operation time zone of the water heater in each household and the operation of the storage battery, and transmitting control information indicating the contents of the control for the water heater and storage battery in the household to the household control means in each household. , Within each household Control means, according to the control information, and wherein operating the water heater and accumulator in households.

  Further, the water heater control method according to the present invention is based on weather information in the vicinity of an apartment house including a plurality of households having a water heater, and water heater state information indicating the state of the water heater of each household in the apartment house. Deriving the operating time and power consumption of a household water heater, and controlling the water heater and storage battery of each household based on the operating time and power consumption of each household water heater and the total power consumption of the apartment house Features.

  The hot water heater control program according to the present invention is based on weather information in the vicinity of an apartment house including a plurality of households having hot water heaters and hot water heater state information indicating the status of the water heaters of each household in the apartment house. Based on the hot water heater information derivation process for deriving the operating time and power consumption of each household water heater, the operating time and power consumption of each household water heater, and the total power consumption of the housing complex, A control process for controlling the machine and the storage battery is executed.

  According to the present invention, in the case where a high-voltage collective power receiving service provider supplies power to each household of an apartment house where hot water heaters are arranged in a plurality of households, It is possible to level the total power supplied to each household from the collective power receiving service provider.

It is a block diagram which shows the example of the water heater control system of this invention. It is a block diagram which shows the structural example of a water heater control apparatus. It is a flowchart which shows the example of the process progress of a water heater control apparatus. It is a schematic diagram which shows the operation time slot | zone of the heat pump water heater 13 for every group, and the change of the sum total of the electric power which the power receiving equipment 21 supplies to the whole household 11 of the apartment 10. FIG. FIG. 5 is a diagram corresponding to FIG. 4 in a case where overlap between different operation time zones is minimized. FIG. 5 is a diagram corresponding to FIG. 4 when the overlap of operation time zones is maximized. It is a schematic diagram which shows the example of the operation time zone determined not to overlap. 2 is a block diagram illustrating a configuration example in the case where a shared controller and a shared storage battery are arranged in an apartment 10. FIG. It is a block diagram which shows the outline | summary of the water heater control apparatus of this invention. It is a block diagram which shows the outline | summary of the water heater control system of this invention. It is a schematic diagram which shows the aspect in which a high voltage | pressure collective power receiving service provider supplies electric power with respect to each household of an apartment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the case where the apartment house is an apartment will be described as an example. However, the present invention can also be applied to an apartment house other than an apartment.

  FIG. 1 is a block diagram showing an example of a water heater control system of the present invention. The water heater control system of the present invention includes a water heater controller 1, a household controller 12 disposed in each household 11 in the apartment 10, a natural refrigerant heat pump water heater 13, and a storage battery 14. Since the household controller 12, the natural refrigerant heat pump water heater 13, and the storage battery 14 are provided for each household 11, there are a plurality of each in the apartment 10. Hereinafter, the natural refrigerant heat pump water heater 13 is simply referred to as a heat pump water heater 13. In FIG. 1, two households 11 are illustrated as households in the apartment 10, but the number of households is not limited to two. Each household 11 is also provided with a smart meter 15.

  The water heater controller 1 controls the heat pump water heater 13 and the storage battery 14 of each household 11 in the apartment 10. The water heater control device 1 is realized by, for example, a server arranged in a data center.

  Each household 11 of the condominium 10 shall purchase electric power from a high-voltage collective power receiving service provider. That is, the high-voltage collective power receiving service operator enters into a high-voltage collective power receiving contract with the power company, and the power receiving facility 21 of the high-voltage collective power receiving service provider collects high-voltage power from the power company and each household in the apartment 10 11 is supplied with electric power.

  The water heater control device 1 collects weather information in the vicinity of the apartment 10. Moreover, the water heater control apparatus 1 represents the water heater state information indicating the state of the heat pump water heater 13 in the household and the state of the storage battery 14 in the household from the household controller 12 of each household 11 in the apartment 10. Collect battery status information. In addition, the water heater control device 1 collects total power usage information indicating the total power usage of the apartment 10. The total power consumption of the apartment 10 is the total power supplied from the power receiving facility 21 of the high-voltage collective power receiving service provider to each household 11 in the apartment 10. It can also be said that the total power consumption of the apartment 10 is the sum of the power supplied to the entire apartment 10 by the power receiving facility 21. The total electric power used by the apartment 10 does not include electric power supplied from the charged storage battery 14 and used.

  The water heater controller 1 uses the collected information to determine the operation time zone of the heat pump water heater 13 and the operation of the storage battery 14 of each household 11 in the apartment 10, and according to the operation, the heat pump hot water supply of each household 11 The machine 13 and the storage battery 14 are controlled. Specifically, the hot water heater control device 1 transmits control information representing the control contents for the heat pump hot water heater 13 and the storage battery 14 to the in-household controller 12 of each household 11.

  The household controller 12 is a controller that operates the heat pump water heater 13 and the storage battery 14 in the same household as the household controller 12. The in-household controller 12 of each household 11 causes the heat pump water heater 13 to start or stop operating according to the control information received from the water heater controller 1. Further, the household controller 12 starts charging the storage battery 14 or starting discharging according to the control information. For example, ECHONET Lite may be used as a protocol for the household controller 12 to operate the heat pump water heater 13. In this case, the heat pump water heater 13 arranged in each household 11 does not need to be a heat pump water heater of a specific vendor, and if it is a heat pump water heater adopting an echo net light, it does not depend on the vendor. Can be used.

  Each household controller 12 monitors the state of the heat pump water heater 13 and the storage battery 14 in the same household as the household controller 12, and hot water heater state information indicating the state of the heat pump water heater 13, and the state of the storage battery 14. Is generated.

  The household controller 12 monitors the temperature of the hot water and the remaining amount of hot water as the state of the heat pump water heater 13, and generates hot water heater state information including the monitoring result. The in-household controller 12 also acquires fixed information such as the tank volume, vendor, and model number of the heat pump water heater 13 from the heat pump water heater 13, and also includes such information in the water heater status information.

  The household controller 12 monitors the amount of charge as the state of the storage battery 14, and generates storage battery state information including the monitoring result. The in-household controller 12 also acquires fixed information such as the capacity of the storage battery 14 from the storage battery 14 and includes the information in the storage battery state information.

  Then, the household controller 12 transmits the generated water heater state information and the storage battery state information to the water heater controller 1.

  Moreover, the household controller 12 may operate or stop various electric devices (not shown) other than the heat pump water heater 13 and the storage battery 14.

  As already described, the operation of the heat pump water heater 13 is an operation in which the heat pump water heater 13 turns water into hot water. The heat pump water heater 13 also performs the operation of keeping the boiled hot water, but since the power consumption at the time of the heat insulation is negligibly small, the operation of the heat pump water heater 13 to convert the water into hot water is the operation of the heat pump water heater 13 explain.

  The storage battery 14 is charged with electric power supplied from the power receiving facility 21. Moreover, when the storage battery 14 discharges, the household 11 having the storage battery 14 may stop receiving power from the power receiving facility 21. In this case, all electric devices in the household 11 (including the heat pump water heater 13) use the electric power discharged from the storage battery 14. This embodiment demonstrates as an example the case where the household 11 which has the storage battery 14 stops the power reception from the power receiving equipment 21, when the storage battery 14 discharges as mentioned above. However, when the storage battery 14 discharges, the household 11 having the storage battery 14 may also receive power supply from the power receiving facility 21.

  Each smart meter 15 arranged for each household 11 measures the electric power supplied from the power receiving facility 21 to the household 11 in which the smart meter 15 is arranged. The smart meter 15 of each household 11 transmits the power measurement result to the aggregator 22.

  The aggregator 22 generates total power usage information indicating the total power usage of the apartment 10 based on the measurement result of the power received from the smart meter 15 of each household 11 of the apartment 10. That is, the aggregator 22 calculates the total power used for each household indicated by the measurement result received from the smart meter 15 of each household 11. This sum corresponds to the total power consumption of the apartment 10. The aggregator 22 transmits total power usage information indicating the calculation result (total power usage of the apartment 10) to the water heater control device 1. The aggregation machine 22 is managed by, for example, a high-voltage collective power receiving service provider together with the power receiving facility 21.

  FIG. 2 is a block diagram illustrating a configuration example of the water heater control device 1. The water heater controller 1 includes a weather information collecting unit 2, a water heater state information collecting unit 3, a storage battery state information collecting unit 4, a total power consumption information collecting unit 5, a water heater information deriving unit 6, and an operation determination. Means 7.

  The weather information collection means 2 collects weather information in the vicinity of the apartment 10 (see FIG. 1). The weather information is, for example, current temperature, humidity, weather, and prediction of changes in humidity, temperature, and weather in the vicinity of the apartment 10. There are companies that provide such weather information. Therefore, the weather information collection means 2 should just collect the weather information of the vicinity of the apartment 10, for example by communicating with the server of such a company. However, the meteorological information collecting method is not limited to this method, and the meteorological information collecting unit 2 may collect meteorological information by other methods.

  The water heater state information collecting means 3 collects the water heater state information of each household 11 by receiving the water heater state information from the in-household controller 12 of each household 11 in the apartment 10. The water heater status information of each household includes the temperature of hot water in the heat pump water heater 13, the remaining amount of hot water, the volume of the tank, the vendor, the model number, and the like.

  The storage battery state information collecting means 4 collects the storage battery state information of each household 11 by receiving the storage battery state information from the in-household controller 12 of each household 11 in the apartment 10. The storage battery status information of each household includes the charge amount and capacity of the storage battery 14.

  The total used power information collecting unit 5 collects the total used power information by receiving the total used power information from the aggregator 22.

  The water heater information deriving means 6 derives the operating time and power consumption of the heat pump water heater 13 for each household 11 based on the weather information and the water heater status information of each household 11. This operation time is the length of time required from the current state of the heat pump water heater to boiling water for the volume of the tank. Moreover, this power consumption is the power consumed by the heat pump water heater 13 within that time.

  The water heater information deriving means 6 may derive the operating time and power consumption of the heat pump water heater 13 by the following method, for example. The water heater information deriving means 6 is a database of temperature, humidity, weather, temperature of hot water in the heat pump water heater 13, remaining amount of hot water, tank volume, operating time and power consumption according to various combinations of vendors and model numbers. Is held in advance. The hot water heater information deriving means 6 uses, for each household 11, a combination of the weather information collected by the weather information collecting means 2 and the hot water heater state information of the individual households 11 collected by the hot water heater state information collecting means 3 as a key. The operation time and power consumption of the heat pump water heater 13 may be searched from the database. The method of deriving the operation time and power consumption of the heat pump water heater 13 is not limited to the above example, and other methods may be used.

  The operation determination means 7 is based on the operation time and power consumption of the heat pump water heater 13 derived for each household 11 and the total power consumption of the apartment 10 indicated by the total power consumption information. , And the operation time of the storage battery 14 is determined. The operation determination means 7 controls the heat pump water heater 13 and the storage battery 14 of each household 11 according to the determination. As described above, the operation determining means 7 transmits the control information indicating the control contents for the heat pump water heater 13 and the storage battery 14 to the in-household controller 12 of each household 11, thereby the heat pump water heater 13 of each household 11. And the storage battery 14 is controlled. Therefore, the operation determination unit 7 may be referred to as a control unit (or a control unit in the water heater controller).

  The meteorological information collecting means 2, the hot water heater state information collecting means 3, the storage battery state information collecting means 4, the total power consumption information collecting means 5, the hot water heater information deriving means 6 and the operation determining means 7 operate according to, for example, a hot water heater control program. This is realized by the CPU of the computer. In this case, for example, the CPU reads a water heater control program from a program recording medium such as a computer program storage device (not shown), and according to the program, the weather information collecting means 2, the water heater state information collecting means 3, the storage battery state What is necessary is just to operate | move as the information collection means 4, the total electric power information collection means 5, the water heater information derivation means 6, and the operation determination means 7. Moreover, each means 2-7 in the water heater controller 1 may be realized by separate hardware.

  Next, the operation will be described. In the following description, the case where the operation determination means 7 determines the operation time zone at night as the operation time zone of each heat pump water heater 13 will be described as an example. The present invention is also applicable when the operation time zone of each heat pump water heater 13 is determined in the daytime. However, during the daytime, hot water is used, and the time zone in which the heat pump water heater 13 operates when the remaining amount of hot water decreases is considered to be random for each household 11. Therefore, it is considered that the operation time zone of the heat pump water heater 13 of each household 11 overlaps during the daytime, and the possibility that the power receiving facility 21 protrudes and becomes high in a certain time zone is small. Therefore, as described above, an example in which the operation determination unit 7 determines an operation time zone at night as an operation time zone of each heat pump water heater 13 will be described. Note that the time corresponding to the night is determined in advance, for example, from 23:00 to 5:00.

  FIG. 3 is a flowchart showing an example of processing progress of the water heater controller 1. The water heater control device 1 determines the operation of each heat pump water heater 13 and each storage battery 14 in the night time zone. Therefore, the water heater controller 1 executes the processes of steps S1 to S7 described below before the time when each heat pump water heater 13 and each storage battery 14 actually start operation.

  The weather information collecting means 2 collects weather information in the vicinity of the apartment 10 (see FIG. 1) (step S1).

  The water heater status information collecting means 3 collects the water heater status information of each household 11 by receiving the water heater status information from the in-household controller 12 of each household 11 in the apartment 10 (step S2). Similarly, the storage battery state information collection means 4 collects the storage battery state information of each household 11 by receiving the storage battery state information from the in-household controller 12 of each household 11 in the apartment 10 (step S3).

  The total used power information collecting unit 5 collects the total used power information by receiving the total used power information from the aggregator 22 (step S4). The process shown in FIG. 3 is a process for determining the operation time zone of the heat pump water heater 13 and the operation of the storage battery 14 at night. As described above, each heat pump water heater 13 and each storage battery 14 actually operate. Prior to the start time, the processes of steps S1 to S7 are executed. Therefore, it can be considered that the total power consumption indicated by the total power consumption information obtained in step S4 does not include the power consumption of the heat pump water heater 13.

  Further, the order of steps S1 to S4 is not limited to the example shown in FIG.

  The water heater information deriving means 6 operates and consumes the heat pump water heater 13 for each household 11 based on the weather information obtained in step S1 and the water heater status information of each household 11 obtained in step S2. Electric power is derived (step S5). Since the example of the operation time of the heat pump water heater 13 and the method for deriving the power consumption has already been described, the description thereof is omitted here.

  Next, the operation determining means 7 includes the operation time and power consumption of the heat pump water heater 13 in each household 11 obtained in step S5, and the total power consumption of the apartment 10 indicated by the total power consumption information obtained in step S4. Based on the above, the operation time zone of the heat pump water heater 13 of each household 11 at night and the operation of the storage battery 14 are determined (step S6).

  The operation determination means 7 determines the operation time zone of the heat pump water heater 13 for each group of households in a time zone determined to be nighttime, for example. The number of households belonging to one group is, for example, 5, but is not limited to 5. The number of households belonging to one group may be 1. When the number of households belonging to one group is 1, the operation determination means 7 determines the operation time zone of the heat pump water heater 13 for each household. For example, the operation determination unit 7 determines the operation time zone of the heat pump water heater 13 for each group so that the total power supplied to the entire household 11 of the condominium 10 by the power receiving facility 21 increases stepwise.

  FIG. 4 is a schematic diagram showing an operation time zone of the heat pump water heater 13 for each group and a change in the total power supplied to the entire household 11 of the apartment 10 by the power receiving facility 21. FIG. 4A schematically shows an operation time zone of the heat pump water heater 13 for each group. FIG. 4B schematically shows a change in the total power supplied to the entire household 11 of the apartment 10 by the power receiving facility 21. The horizontal axis shown in FIG. 4B represents time, and the vertical axis represents the total power supplied to the entire household 11 of the apartment 10 by the power receiving facility 21. The operation time zone shown in FIG. 4A corresponds to the horizontal axis shown in FIG. Further, in FIG. 4A, the height of each group indicates the power consumption when the heat pump water heater 13 of each household belonging to the group is operated. FIG. 4B shows a change in the power supplied to the power receiving facility 21 under the assumption that the power discharged from the storage battery 14 is not used. Note that the total power consumption indicated by the total power consumption information obtained in step S4 is X. The total amount of power used by devices other than the heat pump water heater 13 at night is not necessarily constant, but for the sake of simplicity, the total power used by devices other than the heat pump water heater 13 at night is shown in step S4. It is assumed that the total power consumption X indicated by the total power consumption information obtained in (1) is constant. In addition, the fluctuation | variation of the sum total of the electric power which apparatuses other than the heat pump water heater 13 use at night is considered, and the sum total of the electric power which the power receiving equipment 21 supplies to the whole household 11 of the apartment 10 considers the fluctuation | variation of the sum total. You may ask for changes.

  In order to simplify the explanation, the power consumption when operating the heat pump water heater 13 in the group (specifically, the heat pump water heater 13 of each household belonging to the group) is the group A to D shown in FIG. It is assumed that they are common, and the value is V. The operation determining means 7 determines the power consumption of each heat pump water heater 13 from the power consumption derived in step S5, and calculates the sum of the power consumption of the heat pump water heaters 13 in the group for each group. Thus, the power consumption corresponding to the group may be calculated. Moreover, in FIG. 4, the case where the indication time of the operation time zone of the heat pump water heater 13 of each group is shifted 1 hour is illustrated. Furthermore, the case where the length of the operation time slot | zone of the heat pump water heater 13 of each group is common at 4 hours is illustrated. These points are examples and are not limited to the example shown in FIG. For example, the power consumption when the heat pump water heater 13 in the group is operated may be different for each group. Further, the length of the operation time zone may be different for each group.

  Moreover, although the case where the operation time zone of the heat pump water heater 13 of four groups overlaps at the maximum is illustrated in FIG. 4, the number of groups with which operation time zone overlaps is not limited to four.

  The operation determining means 7 determines the operation time zone of the heat pump water heater 13 in each group by shifting the start time of the operation time zone for each group. It is assumed that the operation determination means 7 determines the operation time zone of the heat pump water heater 13 in the group A as times t1 to t5. Similarly, it is assumed that the operation determining unit 7 determines the operation time zone of the heat pump water heater 13 in the group B as times t2 to t6. Similarly, it is assumed that the operation determining means 7 determines the operation time zone of the heat pump water heater 13 in the group C as times t3 to t7. Similarly, it is assumed that the operation determining unit 7 determines the operation time zone of the heat pump water heater 13 in the group D as times t4 to t8. In this case, as shown in FIG.4 (b), the sum total of the electric power which the power receiving equipment 21 supplies to each whole household 11 of the apartment 10 increases in step shape, and decreases in step shape.

  In addition, a predetermined value S (see FIG. 4) is determined in advance as a threshold for the total power supplied from the power receiving facility 21 to the entire household 11 of the apartment 10. The operation determining means 7 compares the total power supplied to the entire household 11 of the condominium 10 by the power receiving facility 21 under the assumption that the power discharged from the storage battery 14 is not used, and the predetermined value S. The operation of the storage battery 14 is determined.

  The operation determination means 7 is a time zone in which the sum of the total power consumption X of the apartment 10 indicated by the total power consumption information obtained in step S4 and the power consumption of each heat pump water heater 13 to be operated is equal to or less than a predetermined value S. Then, with the electric power obtained by subtracting the sum from the predetermined value S, it is determined that the rechargeable storage batteries 14 among the storage batteries 14 of each household 11 in the apartment 10 are charged. In addition, the operation determination means 7 may determine not to discharge each storage battery 14 in the time zone.

  For example, in the example shown in FIG. 4, the operation time zone of the heat pump water heater 13 in the group A starts at time t1. Therefore, in the time period from time t1 to time t2 shown in FIG. 4, the sum of the total power consumption X and the power consumption of each heat pump water heater 13 to be operated is X + V. X + V is S or less (see FIG. 4B). Therefore, when the operation determination unit 7 causes the rechargeable storage batteries 14 among the storage batteries 14 of the households 11 in the apartment 10 to be charged with the power of (S− (X + V)) at the times t1 to t2. decide. The rechargeable storage battery 14 is a storage battery 14 that is not fully charged. The operation determining means 7 may determine each rechargeable storage battery 14 based on the storage battery state information of each household 11 obtained in step S3. By charging each rechargeable storage battery 14 in this way, the power supplied to the entire apartment 10 by the power receiving facility 21 at the time t1 to t2 becomes a predetermined value S.

  For example, the operation time zone of the heat pump water heater 13 in the group B starts at time t2. Therefore, in the time period from time t2 to time t3 shown in FIG. 4, the sum of the total power consumption X and the power consumption of each heat pump water heater 13 to be operated is X + 2V. X + 2V is equal to or lower than S (see FIG. 4B). Therefore, when the operation determining means 7 causes the rechargeable storage batteries 14 to be charged out of the storage batteries 14 of each household 11 in the apartment 10 with the power of (S− (X + 2V)) at the times t2 to t3. decide. By charging each rechargeable storage battery 14 in this way, the power supplied to the entire apartment 10 by the power receiving facility 21 at the time t2 to t3 becomes a predetermined value S.

  Here, the time zone from time t1 to t2 and the time zone from time t2 to t3 have been described as examples. At time t5, t6, t7, and t8, the operation time zones corresponding to groups A, B, C, and D are terminated. As a result, the total amount of power supplied to the entire household 11 of the apartment 10 by the power receiving facility 21 decreases stepwise (see FIG. 4B). The operation determination means 7 is also similar to the time zone from time t1 to t2 and the time zone from time t2 to t3 with respect to the time zone from time t6 to t7, the time zone from time t7 to t8, etc. shown in FIG. Then, the operation of the storage battery 14 is determined.

  Further, the operation determining means 7 is a time zone in which the sum of the total power consumption X of the apartment 10 indicated by the total power consumption information obtained in step S4 and the power consumption of each heat pump water heater 13 to be operated exceeds a predetermined value S. (Hereinafter, referred to as an excess time zone), it is determined that the storage batteries 14 of some households 11 among the households 11 that operate the heat pump water heater 13 are discharged. In addition, the operation determination means 7 determines that the storage battery 14 of all the households 11 stops charge in an excess time slot | zone. That is, in the excess time zone, the storage battery 14 is discharged but not charged.

  The determination of the operation of the storage battery 14 in the excess time zone will be described in more detail. The operation determining means 7 is the sum of the total power consumption X and the power consumption of each heat pump water heater 13 of the household that operates the heat pump water heater 13 and does not discharge the storage battery 14 in the excess time zone, It is determined that the storage batteries 14 of some households operating the heat pump water heater 13 are discharged so as to be equal to or less than the predetermined value S.

  As already described, in the example of the present embodiment, when the storage battery 14 is discharged, the household 11 having the storage battery 14 stops receiving power from the power receiving facility 21. In the household 11, all electric devices including the heat pump water heater 13 use electric power discharged from the storage battery 14. Therefore, by causing the storage batteries 14 of some households to operate the heat pump water heater 13 to discharge, the total power supplied to the households 11 by the power receiving facility 21 can be reduced. Therefore, the operation determining means 7 may determine that the storage batteries 14 of some households among the households that operate the heat pump water heater 13 are discharged in the excess time zone as described above.

  As described above, in the time zone from time t1 to t3, the time zone after time t6, and the like, in order to cause each rechargeable storage battery 14 to be charged, the power supplied to the entire apartment 10 by the power receiving facility 21 is a predetermined value. S. From the viewpoint of leveling the power supplied to the entire apartment 10 by the power receiving facility 21, it is not preferable to discharge the storage batteries 14 of all households that operate the heat pump water heater 13 in the excess time zone. Therefore, the operation determination means 7 is the sum of the total power consumption X and the power consumption of each heat pump water heater 13 in the household that operates the heat pump water heater 13 and does not discharge the storage battery 14 in the excess time zone. However, the storage battery 14 is discharged so that the number of the heat pump water heaters 13 in the household in which the heat pump water heater 13 is operated and the storage battery 14 is not discharged is maximized. It is preferable to determine the household. That is, by reducing the number of households that operate the heat pump water heater by discharging the storage battery as much as possible, the number of households that operate the heat pump by receiving power supply from the power receiving facility is increased.

  In the example shown in FIG. 4, the operation time zone of the heat pump water heater 13 in the group C starts at time t3. Therefore, in the time period from time t3 to t4 shown in FIG. 4, the sum of the total power consumption X and the power consumption of each heat pump water heater 13 to be operated is X + 3V. And X + 3V> S (see FIG. 4B). Moreover, the operation time zone of the heat pump water heater 13 in the group D starts at time t4. Therefore, in the time period from time t4 to time t5 shown in FIG. 4, the sum of the total power consumption X and the power consumption of each heat pump water heater 13 to be operated is X + 4V. And X + 4V> S (see FIG. 4B). Therefore, the time zone from time t3 to t4 and the time zone from time t4 to t5 correspond to the excess time zone. Similarly, the time period from time t5 to t6 corresponds to the excess time period.

  In the time period from time t3 to time t4, it is determined that the heat pump water heaters 13 in the three groups A, B, and C are operated. Of these three groups A, B, and C, the total power consumption X and the power consumption of each heat pump water heater in each of the two groups, even if the storage batteries 14 of each household in the two groups are not discharged at the maximum. It is assumed that the sum can be made equal to or less than a predetermined value S. Therefore, the operation determining means 7 causes the storage batteries 14 of each household in one group to discharge among the three groups A, B, and C in the time period from time t3 to t4, and in the other two groups. It is determined that the storage battery 14 of each household is not discharged. Moreover, the operation | movement determination means 7 may determine the household which makes a storage battery discharge in order with many charge amounts of a storage battery, for example. In this case, you may determine the household which discharges a storage battery irrespective of a group.

  Further, it is determined that the heat pump water heaters 13 in the four groups A, B, C, and D are operated in the time period from time t4 to t5. Of these four groups A, B, C, and D, the total power consumption X and the power consumption of each heat pump water heater in each of the two groups are not required to be discharged to the storage battery 14 of each household in the two groups. It is assumed that the sum of and can be made equal to or less than a predetermined value S. Therefore, the operation determining means 7 causes the storage batteries 14 of each household in the two groups among the four groups A, B, C, and D to discharge in the time period from time t4 to t5, and the other two groups. It is determined that the storage battery 14 of each household is not discharged. As described above, the operation determining unit 7 may determine, for example, households that cause the storage battery to discharge in descending order of charge amount of the storage battery.

  Here, as the excess time zone, the time zone from time t3 to t4 and the time zone from time t4 to t5 have been described as examples. Similarly, the operation determining means 7 determines the operation of the storage battery 14 for other excess time zones.

  By the operation of step S6 as described above, the operation determination means 7 operates the operation time zone of each heat pump water heater 13 of each household 11, the start time and end time of charging of each storage battery 14, the start time and end time of discharge. Can be determined.

  Next, the operation determination means 7 controls the heat pump water heater 13 and the storage battery 14 of each household 11 according to the determination in step S6 (step S7). Specifically, the operation determining means 7 creates control information representing the contents of control for the heat pump water heater 13 and the storage battery 14 for each household 11 and transmits the control information to the in-household controller 12 of each household 11. . For example, the operation determining means 7 includes, in the control information of the household belonging to the group A, the operation time zone of the heat pump water heater 13 of the household, the charge start time, the charge end time, the discharge start time of the storage battery 14 of the household, Describe the discharge end time. The operation determining means 7 similarly generates control information for households belonging to other groups. However, the description of the control information is not limited to the above example.

  The household controller 12 of each household 11 that has received the control information transmitted in step S7 causes the heat pump water heater 13 and the storage battery 14 to operate according to the received control information. For example, the in-household controller 12 causes the heat pump water heater 13 to operate during the operation time period specified in the control information. Further, the household controller 12 causes the storage battery 14 to start or stop charging or start discharging according to the charging start time, charging end time, discharging start time, and discharging end time specified in the control information. Or end the discharge.

  According to the present embodiment, the total power supplied to each household 11 of the apartment 10 by the power receiving facility 21 can be set to a predetermined value S at night time other than the excess time zone. The total amount of power supplied to each household 11 of the apartment 10 by the facility 21 is less than or equal to the predetermined value S, and can be as close to the predetermined value S as possible. Therefore, the sum total of the electric power that the power receiving facility 21 supplies to each household 11 of the apartment 10 can be leveled.

  Therefore, it is possible to prevent the total amount of power supplied from the power receiving facility 21 to each household 11 of the condominium 10 from being prominently increased, and the purchase amount when the high voltage collective power receiving service provider purchases high voltage power from the power company. Can be prevented from rising. As a result, it is also possible to prevent an increase in the selling price when the high-voltage collective power receiving service provider sells electric power to each household in the apartment.

  In said embodiment, the operation | movement determination means 7 may divide | segment and determine the operation | movement time zone of the heat pump water heater 13 corresponding to each group. For example, in the example shown in FIG. 4, the operation time zone corresponding to the group A may be divided, and the divided operation time zones may be determined at intervals. And the operation | movement determination means 7 may determine the operation | movement time slot | zone corresponding to another group in the space | interval.

  In the above embodiment, the case where the total power usage information collecting unit 5 collects the total power usage information from the aggregator 22 has been described as an example. The total power usage information collecting unit 5 may collect the total power usage information from the power receiving facility 21. In this case, the power receiving facility 21 transmits information indicating the total power supplied to each household 11 of the apartment 10 to the water heater controller 1 as total power usage information. The total power usage information collecting unit 5 may collect the total power usage information by receiving the total power usage information.

Further, the operation determining means 7 may minimize the overlap of different operation time zones as much as possible. FIG. 5 is a diagram corresponding to FIG. 4 in the case where the overlap between different operation time zones is minimized. FIG. 5 shows a case where the operation time zones corresponding to the groups A and B are matched, the operation time zones corresponding to the groups C and D are matched, and the overlap between the two operation time zones is 1 hour. .
In FIG. 5, for the sake of convenience, the predetermined value S = X + 2V is used to represent the characteristics when the overlap of the operation time zones is minimized. As can be seen from FIG. 5, when the overlap between the different operation time zones is made as small as possible, there is a disadvantage that the opportunity to charge the storage battery 14 is reduced (in other words, the degree of freedom to charge the storage battery 14 is reduced). There is. And there is an advantage that the capacity of the storage battery 14 of each household may be small.

  Further, the operation determining means 7 may increase the overlap of the operation time zones as much as possible. FIG. 6 is a diagram corresponding to FIG. 4 in the case where the overlap of operation time zones is maximized. FIG. 6 shows a case where the operation time zones corresponding to the groups are matched. Also in FIG. 6, for the sake of convenience, the predetermined value S = X + 2V is used in order to represent the characteristics when the overlapping of the operation time zones is maximized. As can be seen from FIG. 6, when the overlap of the operation time zones is increased as much as possible, there is an advantage that the opportunity to charge the storage battery 14 increases (in other words, the degree of freedom to charge the storage battery 14 increases). . And there is a disadvantage that it is necessary to increase the capacity of the storage battery 14 of each household.

  It can be said that the example shown in FIG. 4 has an intermediate characteristic between the example shown in FIG. 5 and the example shown in FIG.

  In addition, the operation time of each heat pump water heater 13 derived by the water heater information deriving unit 6 varies depending on weather conditions. For example, when the temperature is high, such as summer, the operation time is shortened, but when the temperature is low, such as winter, the operation time is long. Note that the operation time may change due to not only the temperature but also the influence of humidity, weather, and the like. When the operation time of each heat pump water heater 13 is short due to weather conditions, the operation determination means 7 may determine the operation time zone of each heat pump water heater 13 so that the time zone where the operation time overlaps does not overlap. FIG. 7 is a schematic diagram illustrating an example of an operation time period determined not to overlap. By determining the operation time zone in this way, it is possible to prevent the sum of the power supplied to the entire household 11 of the apartment 10 by the power receiving facility 21 from exceeding the predetermined value S.

  For example, when the total value of the operation time of the heat pump water heater 13 for each group is longer than the time zone corresponding to the night (for example, 23:00 to 5:00), the operation time of the heat pump water heater 13 of each group overlaps. Thus, the operation determination means 7 determines the operation time zone of the heat pump water heater 13 for each group. Moreover, when the total value of the operation time of the heat pump water heater 13 for each group is shorter than the time zone corresponding to the night (for example, from 23:00 to 5:00), the operation time of the heat pump water heater 13 of each group does not overlap. Thus, the operation determination means 7 determines the operation time zone of the heat pump water heater 13 for each group.

  Further, instead of disposing the in-household controller 12 and the storage battery 14 (see FIG. 1) in each household 11, a configuration in which a shared controller and a shared storage battery shared by each household 11 are disposed in the apartment 10 may be adopted. FIG. 8 is a block diagram showing a configuration example when a shared controller and a shared storage battery are arranged in the apartment 10. Elements similar to those shown in FIG. 1 are given the same reference numerals as those in FIG.

  The shared controller 31 monitors the state of the heat pump water heater 13 of each household 11 in the apartment 10, generates water heater state information indicating the state of the heat pump water heater 13 for each household 11, and transmits it to the water heater controller 1. To do.

  In addition, the shared controller 31 monitors the state of the shared storage battery 32, generates storage battery state information representing the state of the shared storage battery 32, and transmits the storage battery state information to the water heater control device 1. In this storage battery state information, the charge amount and capacity of the shared storage battery 32 are described.

  The shared storage battery 32 is charged with electric power supplied from the power receiving facility 21. Moreover, the shared storage battery 32 discharges electric power for each household. Each household 11 may stop receiving power from the power receiving facility 21 when power is supplied from the shared storage battery 32. All electric devices including the heat pump water heater 13 in the household use electric power discharged from the shared storage battery 32. Each household 11 may receive power from the power receiving facility 21 while receiving power from the shared storage battery 32.

  The operation determining means 7 (see FIG. 2) in the water heater controller 1 is a time during which the sum of the total power consumption X indicated by the total power consumption information and the power consumption of each heat pump water heater to be operated is equal to or less than a predetermined value S. It is determined that the shared storage battery 32 is charged with power obtained by subtracting the sum from the predetermined value S in the band. For example, the operation determination unit 7 determines that the shared storage battery 32 is charged with the power of (S− (X + V)) at time t1 to t2 illustrated in FIG. However, if the shared storage battery 32 is fully charged, the above determination need not be made.

  Moreover, the operation | movement determination means 7 determines that the common storage battery 32 is made to discharge with respect to some households among the households which operate the heat pump water heater 13 in an excess time slot | zone. More specifically, the operation determining means 7 calculates the total power consumption X and the power consumption of the heat pump water heater 13 of the household that operates the heat pump water heater 13 and does not receive power supply due to the discharge of the shared storage battery 32. It is determined that the shared storage battery 32 is discharged to some households among the households that operate the heat pump water heater 13 so that the sum is equal to or less than the predetermined value S.

  Here, the operation determining means 7 determines the sum of the total power consumption X and the power consumption of the heat pump water heater 13 of a household that operates the heat pump water heater 13 and does not receive power supply due to the discharge of the shared storage battery 32. The households that receive the power supply by the discharge of the shared storage battery 32 are determined so that the number of households that are less than the value S, operate the heat pump water heater 13 and do not receive the power supply by the discharge of the shared storage battery 32 is maximized. . That is, by reducing the number of households that operate the heat pump water heater by discharging the storage battery as much as possible, the number of households that operate the heat pump by receiving power supply from the power receiving facility is increased.

  Other points are the same as those of the embodiment described above.

  Further, in the embodiment using the shared controller 31 and the shared storage battery 32, the total power consumption X includes power supplied from the power receiving facility 21 to the shared storage battery 32. Therefore, it is preferable that the power receiving facility 21 transmits information indicating the total power supplied by the power receiving facility 21 to the entire apartment 10 including the shared storage battery 32 to the water heater control device 1 as total power usage information.

  Next, the outline of the present invention will be described. FIG. 9 is a block diagram showing an outline of the water heater controller of the present invention. FIG. 10 is a block diagram showing an outline of the water heater control system of the present invention. 9 and 10, the same elements are denoted by the same reference numerals.

  As shown in FIG. 10, the water heater control system of the present invention includes a water heater 63 (for example, a natural refrigerant heat pump water heater 13) disposed in each household in an apartment house (for example, an apartment 10), and each household. Storage battery 64 (for example, storage battery 14) disposed in each household, household control means 62 (for example, household controller 12) disposed in each household and operating the water heater 63 and storage battery 64 in the household, A water heater control device 50 (for example, a water heater control device 1) that controls the household water heater 63 and the storage battery 64 is provided.

  The water heater controller 50 includes water heater information deriving means 51 and control means 52 (see FIGS. 9 and 10).

  The water heater information deriving means 51 (for example, the water heater information deriving means 6) is based on the weather information in the vicinity of the apartment house and the water heater state information indicating the state of the water heater 63 of each household. 63 operating time and power consumption are derived.

  The control means 52 (for example, the operation determining means 7) determines the operation time zone and the storage battery of the water heater 63 of each household based on the operation time and power consumption of the water heater 63 of each household and the total power consumption of the apartment house. 64 operation | movement is determined and the water heater 63 and the storage battery 64 of each household are controlled according to determination. The control means 52 transmits control information indicating the control contents for the hot water heater 63 and the storage battery 64 in the household to the household control means 62 of each household.

  The household control means 62 of each household operates the water heater 63 and the storage battery 64 in the household according to the control information.

  According to such a configuration, when a high-voltage collective power receiving service provider supplies power to each household of an apartment house in which water heaters are arranged in a plurality of households, when operating a plurality of water heaters It is possible to level the total amount of power supplied to each household from the high-voltage collective power receiving service provider.

  The control means 52 is a time zone in which the sum of the total power consumption of the apartment house and the power consumption of each hot water heater 63 to be operated is less than or equal to a predetermined value, and the storage battery of each household is obtained by subtracting the sum from the predetermined value. Of 64, it may be determined that each rechargeable storage battery 64 is charged.

  The control means 52 stores the storage batteries 64 of some households that operate the water heater 63 in a time zone in which the sum of the total power consumption of the apartment house and the power consumption of each water heater 63 to be operated exceeds a predetermined value. It may be determined that the battery is discharged.

  The control means 52 is configured so that the sum of the total power consumption of the housing complex and the power consumption of each water heater in the household that operates the water heater 63 and does not discharge the storage battery 64 is less than a predetermined value. It may be determined that the storage batteries 64 of some households that operate the water heater 63 are discharged.

  The control means 52 is configured such that the sum of the total electric power used in the housing complex and the power consumption of each hot water heater 63 in the household that operates the hot water heater 63 and does not discharge the storage battery 64 becomes a predetermined value or less. The household that causes the storage battery 64 to discharge may be determined so that the number of water heaters 63 of the household that operates the 63 and does not cause the storage battery 64 to discharge is maximized.

  The control means 52 may determine the household which makes a storage battery discharge in order with the large charge amount of a storage battery, when determining the household which makes a storage battery discharge among the households which operate a water heater.

  Households that cause the storage battery to discharge may stop power supply from the outside.

  The control means 52 operates the operation of each group so that the operation time zone of each group does not overlap on condition that the total value of the operation time of the grouped hot water heater groups is shorter than the length of the predetermined time zone. A time zone may be set.

  The present invention is preferably applied to control of a water heater disposed in each household in an apartment house.

DESCRIPTION OF SYMBOLS 1 Hot-water supply controller 2 Weather information collection means 3 Hot-water supply state information collection means 4 Storage battery state information collection means 5 Total power consumption information collection means 6 Hot-water supply information derivation means 7 Operation determination means 12 Household controller 13 Heat pump water heater (natural Refrigerant heat pump water heater)
14 Storage Battery 15 Smart Meter 21 Power Receiving Equipment 22 Aggregator

Claims (17)

Based on weather information in the vicinity of an apartment house including a plurality of households having a water heater and hot water heater state information indicating the state of the water heater of each household in the apartment house, the operation time of the water heater of each household And water heater information deriving means for deriving power consumption,
Control means for controlling the water heater and storage battery of each household based on the operating time and power consumption of the water heater of each household and the total power consumption of the apartment house Machine control device. The control means
The storage battery is charged with electric power obtained by subtracting the sum from the predetermined value in a time zone in which the sum of the total power consumption of the apartment house and the power consumption of each water heater to be operated is equal to or less than the predetermined value. The water heater control device described. The control means
The storage batteries of some of the households that operate the water heater are discharged during a time period in which the sum of the total power consumption of the apartment house and the power consumption of each water heater that is operated exceeds a predetermined value. Or the hot-water supply machine control apparatus of Claim 2. The control means
The storage batteries of some of the households so that the sum of the total power consumption of the housing complex and the power consumption of each of the water heaters of the households that operate the water heater and do not discharge the storage battery is less than a predetermined value The water heater control device according to claim 3, wherein the discharge is performed. The control means
The sum of the total power consumption of the apartment and the power consumption of each water heater in the household that operates the water heater and does not discharge the storage battery is less than the predetermined value, operates the water heater, and The water heater control device according to claim 3 or 4, wherein a household that causes the storage battery to discharge is determined so that the number of water heaters in the household that does not perform discharge is maximized. The control means
The water heater controller according to claim 5, wherein when determining a household that causes the storage battery to discharge among households that operate the water heater, a household that causes the storage battery to discharge is determined in descending order of charge amount of the storage battery. The control means
The operation time zone of each group is determined so that the operation time zone of each group does not overlap on condition that the total value of the operation time of the group of water heaters divided into groups is shorter than the length of the predetermined time zone. Item 2. A water heater control device according to Item 1. A water heater located in each household in the housing complex;
A storage battery arranged in each household;
Household control means arranged in each household and operating a water heater and a storage battery in the household;
A water heater controller for controlling the water heater and the storage battery of each household,
The water heater controller is
Water heater information deriving means for deriving operating time and power consumption of the water heater of each household based on weather information in the vicinity of the apartment house and water heater state information indicating the state of the water heater of each household When,
Based on the operation time and power consumption of the water heater of each household and the total power consumption of the apartment house, the operation time zone of the water heater and the operation of the storage battery of each household are determined, Control information representing the content of control for the water heater and the storage battery, and control means for transmitting to the household control means of each household,
The household control means of each household is:
A water heater control system for operating a water heater and a storage battery in a household according to the control information. The control means
It is determined that the storage battery is charged with power obtained by subtracting the sum from the predetermined value in a time zone where the sum of the total power consumption of the apartment house and the power consumption of each water heater to be operated is equal to or less than the predetermined value. The water heater control system according to claim 8. The control means
Decided to discharge the storage batteries of some of the households that operate the water heaters in the time zone when the sum of the total power consumption of the housing complex and the power consumption of each water heater operated exceeds the specified value The water heater control system according to claim 8 or 9. The control means
The storage batteries of some of the households so that the sum of the total power consumption of the housing complex and the power consumption of each of the water heaters of the households that operate the water heater and do not discharge the storage battery is less than a predetermined value The water heater control system according to claim 10, wherein it is determined to cause the battery to discharge. The control means
The sum of the total power consumption of the apartment and the power consumption of each water heater in the household that operates the water heater and does not discharge the storage battery is less than the predetermined value, operates the water heater, and The water heater control system according to claim 10 or 11, wherein a household that causes the storage battery to discharge is determined so that the number of water heaters of the household that does not perform discharge is maximized. The control means
The water heater control system according to claim 12, wherein when determining a household for operating a water heater, a household for discharging the storage battery is determined in descending order of charge amount of the storage battery. The water heater control system according to claim 12 or 13, wherein a household that causes the storage battery to discharge stops power supply from outside. The control means
The operation time zone of each group is determined so that the operation time zone of each group does not overlap on condition that the total value of the operation time of the group of water heaters divided into groups is shorter than the length of the predetermined time zone. Item 9. A water heater control system according to Item 8. Based on weather information in the vicinity of an apartment house including a plurality of households having a water heater and hot water heater state information indicating the state of the water heater of each household in the apartment house, the operation time of the water heater of each household And derive power consumption,
The water heater control method, wherein the water heater and the storage battery of each household are controlled based on the operation time and power consumption of the water heater of each household and the total power consumption of the apartment house. On the computer,
Based on weather information in the vicinity of an apartment house including a plurality of households having a water heater and hot water heater state information indicating the state of the water heater of each household in the apartment house, the operation time of the water heater of each household And water heater information derivation processing to derive power consumption,
A water heater control program for executing a control process for controlling the water heater and the storage battery of each household based on the operation time and power consumption of the water heater of each household and the total power consumption of the apartment house .

Images