JP6647019B2 - Power management system - Google Patents

Description

  The technology disclosed in this specification relates to a power management system.

  The power management system disclosed in Patent Literature 1 includes a water heater installed in each of a plurality of dwelling units of an apartment house. Each water heater includes a heat pump for heating water (heat medium) and a tank for storing water (heat medium) heated by the heat pump.

  In the power management system of Patent Document 1, a high-voltage collective power receiving service is used. The high-voltage collective power receiving service is a service in which a management company of an apartment house collectively receives high-voltage power from a power company, and the management company divides and supplies the received power to each dwelling unit of the apartment house. In this high-voltage collective power receiving service, the electricity rate fluctuates depending on the maximum amount of electric power used in the entire apartment building. The maximum power consumption is a maximum value of the power consumption over a predetermined time (for example, 30 minutes) in the entire apartment house.

JP 2015-12722 A

  In order to suppress the electricity bill of the high-voltage collective power receiving service, it is effective to suppress the maximum power consumption. Therefore, in the power management system of Patent Literature 1, the power consumption of the water heater is suppressed. However, when the power consumption of the water heater is suppressed, the amount of heat when heating the water by the heat pump is reduced, and there is a problem that the water cannot be reliably heated. Accordingly, the present specification provides a technique capable of reliably heating a heat medium while suppressing power consumption.

The power management system disclosed in this specification includes control means for an apartment house installed in an apartment house, and control means for a dwelling unit installed in each of a plurality of dwelling units of the apartment house. In addition, the power management system is installed in each of the plurality of dwelling units of the apartment house, and a gas heat source device that heats the heat medium, a heat pump that heats the heat medium, a tank that stores the heat medium heated by the heat pump, And a control device for the device. The thermal equipment of each dwelling unit can operate in a normal operation mode and a suppressed operation mode in which power consumption is suppressed more than in the normal operation mode. The control means for an apartment house transmits a power suppression instruction to the control means for dwelling units of each dwelling unit when the sum of the power consumption of the heat appliances of the plurality of dwelling units is equal to or more than a predetermined upper threshold power less than the predetermined suppression power , and When the sum of the power consumption of the heat appliances of the dwelling units becomes less than the lower threshold power and less than the upper threshold power, a power return instruction is transmitted to the dwelling unit control means of each dwelling unit. The dwelling unit control means of each dwelling unit transmits the operation suppression instruction to the heating device control means of the heating equipment of the dwelling unit based on the power suppression instruction received from the apartment dwelling unit control unit, and receives from the apartment dwelling unit control means. Based on the received power return instruction, the operation return instruction is transmitted to the thermal appliance control means of the thermal appliance of the dwelling unit. The heat equipment control means of each heat equipment controls the heat pump in the suppression operation mode based on the operation suppression instruction received from each dwelling unit control means, suppresses the operation of the heat pump, and moves the tank from the tank to the heat medium utilization point. If the temperature of the supplied heat medium is lower than the predetermined temperature, the gas heat source device is operated to heat the heat medium, and the heat equipment is operated in the normal operation mode based on the operation return instruction received from each dwelling unit control unit. Operate to release the suppression of heat pump operation.

  According to such a configuration, since the operation of the heat pump is controlled to suppress power consumption, the amount of heat when the heat medium is heated by the heat pump is reduced. However, since the heat medium can be heated by the gas heat source device, the heat medium can be reliably heated. This makes it possible to reliably heat the heat medium while suppressing power consumption.

  Further, each thermal device may include a setting unit for setting power consumption. The heat equipment control means of each heat equipment may suppress the operation of the heat pump of the heat equipment so that the power consumption of the heat equipment is equal to or less than the set power set by the setting means.

  According to such a configuration, the power consumption of each thermal device can be suppressed to a set power desired by the user or less.

It is a schematic diagram of an apartment house in which the power management system according to the embodiment is installed. FIG. 1 is a block diagram of a power management system according to an embodiment. It is a block diagram of the thermal equipment concerning an example. It is a schematic diagram of the thermal equipment concerning an Example. It is a figure for explaining operation of a power management system.

  As shown in FIGS. 1 and 2, the power management system 1 according to the embodiment is installed in an apartment house 100. The apartment house 100 is a house in which a plurality of dwelling units 110 are gathered in one building, and is, for example, an apartment or a hotel. Each dwelling unit 110 is, for example, a room in an apartment or hotel.

  In the apartment house 100, a high-voltage collective power receiving service is used. The high-voltage collective power receiving service is a service in which the management company of the apartment house 100 collectively receives high-voltage power from the power company, and the management company divides and supplies the received power to each dwelling unit 110 of the apartment house 100. In this high-voltage collective power receiving service, the electricity rate fluctuates depending on the maximum amount of electric power used in the apartment house 100 as a whole. The maximum power consumption is the maximum value of the power consumption over a predetermined time (for example, 30 minutes) in the entire apartment house 100.

  The power management system 1 includes one control unit for apartment house 120, a plurality of control units for dwelling units 130, and a plurality of thermal devices 140.

  The control device 120 for an apartment house is installed in the apartment house 100. One apartment house control device 120 is installed for one apartment house 100. The apartment house control device 120 is a HEMS (Home Energy Management System) for the apartment house 100.

  Each dwelling unit control device 130 is installed in each dwelling unit 110. One dwelling unit control device 130 is installed for one dwelling unit 110. A dwelling unit control device 130 is installed in all dwelling units 110 of the apartment house 100. The dwelling unit control device 130 is a HEMS (Home Energy Management System) for the dwelling unit 110. Each dwelling unit control device 130 is electrically connected to the apartment house control device 120.

  Each thermal device 140 is installed in each dwelling unit 110. One heat appliance 140 is installed for one dwelling unit 110. Thermal equipment 140 is installed in all dwelling units 110 of apartment house 100. Each thermal device 140 includes a thermal device control device 180. The thermal equipment control device 180 of each thermal equipment 140 controls the operation of the thermal equipment 140. The control device 180 for thermal equipment of the thermal equipment 140 of each dwelling unit 110 is electrically connected to the control unit 130 for dwelling unit of the dwelling unit 110.

  As shown in FIG. 3, each thermal device 140 includes a heat pump unit 6 including a heat pump 50, a tank unit 4 including a tank 10, and a heat source unit 8 including a gas heat source unit 150. Have. Details of the configuration of the heating device 140 will be described later.

  Each thermal device 140 is operable in the normal operation mode and the suppression operation mode. In the suppression operation mode, the operation of the thermal device 140 is suppressed. The power consumption of the thermal device 140 in the suppression operation mode is suppressed more than the power consumption of the thermal device 140 in the normal operation mode. The thermal equipment 140 consumes relatively large power when operated in the normal operation mode, and consumes relatively small power when operated in the suppressed operation mode. The power consumption of the thermal device 140 increases when the heat pump 50 operates. When the operation of the heat pump 50 is suppressed, the power consumption of the thermal device 140 is suppressed. In the suppression operation mode of the thermal device 140, the operation of the heat pump 50 is suppressed. In the normal operation mode of the thermal device 140, the operation of the heat pump 50 is not suppressed.

  Each thermal device 140 includes a setting device 190 for setting the power consumption of the thermal device 140. The user of each thermal device 140 can set the power consumption of the thermal device 140 in advance. Each thermal device 140 is operable such that its power consumption is equal to or less than the set power set by the setting device 190.

  In the power management system 1, the control device for apartment house 120 monitors the total power consumption of the thermal equipment 140 of all the dwelling units 110 of the apartment house 100. The total power consumption of the thermal equipment 140 of all the dwelling units 110 depends on the operation status of the thermal equipment 140 of all the dwelling units 110. If the number of thermal devices 140 in which heat pump 50 is operating in the normal operation mode among thermal devices 140 in all dwelling units 110 is large, the total power consumption of thermal devices 140 in all dwelling units 110 will be large. When the ratio of the heat appliances 140 in which the heat pump 50 is operating in the suppression operation mode among the heat appliances 140 of all the dwelling units 110 becomes large, the total power consumption of the heat appliances 140 of all the dwelling units 110 becomes relatively small.

  Next, an example of a heat appliance will be described. In the present embodiment, a hot water supply / room heating device is used as the heating device. As shown in FIG. 4, the thermal equipment 140 (hot water supply / room heating device) includes a tank unit 4, a heat pump unit 6, a heat source unit 8, and a thermal equipment control device 180.

  The heat pump unit 6 includes a heat pump 50 and a hot water supply water circulation pump 22. The heat pump 50 includes a refrigerant circuit 52 for circulating a refrigerant (for example, an HFC refrigerant such as R410A, a natural refrigerant such as CO2, isobutane, and propane), an air heat exchanger 54, a fan 56, and a compressor 62. , A hot water supply heat exchanger 51, a heating heat exchanger 53, and an expansion valve 60. In the heat pump 50, the air heat exchanger 54 constitutes an evaporator, and the hot water supply heat exchanger 51 and the heating heat exchanger 53 constitute a condenser.

  The air heat exchanger 54 exchanges heat between the outside air blown by the fan 56 and the refrigerant in the refrigerant circuit 52. The refrigerant in the low-pressure low-temperature liquid state after passing through the expansion valve 60 is supplied to the air heat exchanger 54. The air heat exchanger 54 heats the refrigerant by exchanging heat between the refrigerant and the outside air. The refrigerant is vaporized by being heated, and becomes a relatively high temperature and low pressure gas state.

  The refrigerant after passing through the air heat exchanger 54 is supplied to the compressor 62. That is, the compressor 62 is supplied with a relatively high temperature and low pressure gaseous refrigerant. When the refrigerant is compressed by the compressor 62, the refrigerant is in a high temperature and high pressure gas state. The compressor 62 sends the compressed high-temperature high-pressure refrigerant in a gaseous state to the hot-water supply heat exchanger 51.

  The hot-water supply heat exchanger 51 is supplied with the high-temperature and high-pressure gaseous refrigerant sent from the compressor 62. The hot water supply heat exchanger 51 exchanges heat between the refrigerant in the refrigerant circulation path 52 and water (an example of a heat medium, hereinafter also referred to as hot water supply water) in the tank water circulation path 20 described below. The refrigerant that has passed through the hot water supply heat exchanger 51 is sent to the heating heat exchanger 53. The heating heat exchanger 53 exchanges heat between the refrigerant from the hot water supply heat exchanger 51 and water (an example of a heat medium, hereinafter also referred to as heating water) from a second heating / heating path 84 described later. Do. As a result of heat exchange in the hot water supply heat exchanger 51 and / or the heating heat exchanger 53, the refrigerant is deprived of heat and condensed. As a result, the refrigerant becomes a liquid state at a relatively low temperature and a high pressure.

  The expansion valve 60 is supplied with a relatively low-temperature and high-pressure liquid refrigerant after passing through the heating heat exchanger 53. The refrigerant is decompressed by passing through the expansion valve 60 and becomes a low-temperature and low-pressure liquid state. The refrigerant that has passed through the expansion valve 60 is sent to the air heat exchanger 54 as described above.

  In the heat pump 50, when the compressor 62 is operated, the refrigerant in the refrigerant circulation path 52 circulates in the order of the compressor 62, the hot water supply heat exchanger 51, the heating heat exchanger 53, the expansion valve 60, and the air heat exchanger 54. . Thereby, the hot-water supply water (heat medium) in the tank water circulation path 20 is heated in the hot-water supply heat exchanger 51 and / or the heating water (heat medium) from the second heating / heating path 84 is heated in the heating heat exchanger 53. Heated. The hot water supply heat exchanger 51 and the heating heat exchanger 53 can also be referred to as a heating device 55 that heats hot water supply water and / or heating water using refrigerant as a heating fluid.

  The tank unit 4 has a tank 10. The tank 10 stores hot-water supply water heated by the heat pump 50. The hot-water supply water of the present embodiment is tap water. The tank 10 is a closed type, and the outside is covered with a heat insulating material. Hot water is stored in the tank 10 until it is full.

  The tank water circulation path 20 has an upstream end connected to a lower part of the tank 10, passes through a hot water supply heat exchanger 51 of the heat pump unit 6, and has a downstream end connected to an upper part of the tank 10. The hot-water supply water circulation pump 22 of the heat pump unit 6 is interposed in the tank water circulation path 20. In the heat pump unit 6, when the heat pump 50 is operated to drive the hot-water supply water circulation pump 22, the hot-water supply water at the lower part of the tank 10 is sent to the hot-water supply heat exchanger 51 and heated, and the heated hot-water supply water is supplied to the tank 10. Returned to the top. Inside the tank 10, a temperature stratification is formed in which a layer of high-temperature hot water is stacked on a layer of low-temperature hot water.

  The upstream end of the tap water introduction passage 24 is connected to a tap water supply source 32 outside the heating device 140 (hot water supply / heating device). The downstream side of the tap water introduction passage 24 branches into a first introduction passage 24a and a second introduction passage 24b. The downstream end of the first introduction path 24a is connected to the lower part of the tank 10. The downstream end of the second introduction path 24b is connected in the middle of the first hot water supply path 36.

  The upstream end of the first hot water supply passage 36 is connected to the upper part of the tank 10. As described above, the second introduction path 24b of the tap water introduction path 24 is connected in the middle of the first hot water supply path 36. A mixing valve 30 is interposed at the connection between the first hot water supply path 36 and the second introduction path 24b. The mixing valve 30 adjusts the ratio of the flow rate of the high-temperature hot-water supply water flowing into the first hot-water supply path 36 from the upper part of the tank 10 to the flow rate of the low-temperature tap water flowing into the first hot-water supply path 36 from the second introduction path 24b. I do. The first hot water supply path 36 downstream of the connection with the second introduction path 24 b passes through the hot water supply heating path 37 of the heat source unit 8 and is connected to the second hot water supply path 39. The first hot water supply path 36 and the second hot water supply path 39 are connected by a heat source unit bypass path 33. A bypass valve 34 is interposed in the heat source device bypass passage 33. The downstream end of the second hot water supply path 39 is connected to a hot water tap 38.

  The heat source unit 8 includes a cistern 70, a heating burner 82, and a hot water supply burner 81. The heating burner 82 and the hot water supply burner 81 can also be referred to as a gas heat source device 150 for heating the heat medium. The cistern 70 is a container whose upper part is open, and stores heating water therein. The heating water of this embodiment is, for example, tap water or antifreeze. The upstream end of the outward heating path 72 is connected to the cistern 70. A heating water circulation pump 74 is interposed in the heating outward path 72. When the heating water circulation pump 74 is driven, the heating water in the cistern 70 flows into the heating outward path 72.

  The downstream end of the heating outward path 72 branches into a first heating and heating path 73 and a low-temperature heating circulation path 75. A low-temperature heater 78 is attached to the low-temperature heating circuit 75. The low-temperature heater 78 of this embodiment is, for example, a floor heater. The low-temperature heater 78 heats using the heat of the supplied heating water. A heating burner 82 is interposed in the first heating heating path 73. The heating burner 82 heats the heating water in the first heating heating path 73. The downstream end of the first heating and heating path 73 is branched into a high-temperature heating circuit 77 and a reheating circuit 79. A high-temperature heater 76 is attached to the high-temperature heating circuit 77. The high-temperature heater 76 of this embodiment is, for example, a bathroom heater / dryer. The high-temperature heater 76 heats using the heat of the supplied heating water. The low-temperature heating circulation path 75 and the high-temperature heating circulation path 77 join at their respective downstream ends and are connected to the upstream end of the second heating / heating path 84.

  The downstream end of the second heating heating path 84 passes through the heating heat exchanger 53 of the heat pump unit 6 and is connected to the heating return path 96. The downstream end of the heating return path 96 is connected to the cistern 70 of the heat source unit 8.

  In the reheating circuit 79, a reheating heat valve 83 and a reheating heat exchanger 97 are provided. The reheating heating valve 83 opens and closes the reheating circulation circuit 79. In the reheating heat exchanger 97, heat is exchanged between the heating water flowing through the reheating circuit 79 and the bath water flowing through the bath water circulation path 91. The downstream end of the reheating circuit 79 is connected to a heating return path 96.

  The upstream end of the bathtub water circulation path 91 is connected to the bottom of the bathtub 98. The downstream end of the bathtub water circuit 91 is connected to the side of the bathtub 98. A bathtub water circulation pump 99 is provided in the bathtub water circulation path 91. When the bathtub water circulation pump 99 is driven, the bathtub water sucked from the bottom of the bathtub 98 passes through the reheater 97 and returns to the side of the bathtub 98.

  The hot water supply heating path 37 is provided with a hot water supply burner 81. The bath tub pouring path 40 branches from the hot water supply heating path 37 downstream of the hot water supply burner 81. The bath tub pouring passage 40 is provided with a pouring solenoid valve 42 for opening and closing the bath tub pouring passage 40. The downstream end of the bathtub pouring channel 40 is connected to a bathtub water circulation pump 99.

  The control device 180 controls the operation of each component of the tank unit 4, the heat pump unit 6, and the heat source unit 8.

  The heat appliance 140 (hot water supply / room heating device) can perform a heat storage operation, a hot water supply operation, a heating operation, a hot water operation, a reheating operation, an antifreezing operation, and the like, as described below.

(Heat storage operation)
In the heat storage operation, the hot-water supply water in the tank 10 is heated by the heat pump 50, and the hot-water supply water having a high temperature is returned to the tank 10. When the heat storage operation is performed, the control device for a heat appliance 180 drives the compressor 62 and the fan 56 to operate the heat pump 50 and also drives the hot water supply water circulation pump 22.

  By driving the compressor 62, the refrigerant in the refrigerant circulation path 52 circulates in the order of the compressor 62, the hot water supply heat exchanger 51, the heating heat exchanger 53, the expansion valve 60, and the air heat exchanger 54. In this case, the refrigerant in the refrigerant circulation path 52 passing through the hot water supply heat exchanger 51 is in a high-temperature and high-pressure gas state. By driving the hot water supply water circulation pump 22, the hot water supply water in the tank 10 circulates in the tank water circulation path 20. That is, hot water supply water present in the lower part of the tank 10 is introduced into the tank water circulation path 20, and when the introduced hot water supply water passes through the hot water supply heat exchanger 51, it is heated by the heat of the refrigerant in the refrigerant circulation path 52. Then, the heated hot-water supply water is returned to the upper portion of the tank 10. Thereby, hot water for hot water supply is stored in the tank 10. When the inside of the tank 10 reaches a full storage state filled with high-temperature hot-water supply water, the heat storage operation ends.

(Hot water supply operation)
The hot water supply operation is an operation for supplying hot water in the tank 10 to the hot water tap 38. The hot water supply operation can be performed in parallel with the heat storage operation. When the hot-water tap 38 is opened, the tap water flows from the tap water supply passage 24 (first introduction passage 24 a) into the lower part of the tank 10 by the water pressure from the tap water supply source 32. At the same time, the hot-water supply water in the upper part of the tank 10 is supplied to the hot-water tap 38 via the first hot-water supply path 36.

  When the temperature of the hot water supply water supplied from tank 10 to first hot water supply passage 36 is higher than the set hot water supply temperature, control device 180 for heat equipment drives mixing valve 30 to drive first supply water from second introduction passage 24b to first hot water supply passage 24b. Tap water is introduced into the hot water supply path 36. Therefore, the hot water supply water supplied from the tank 10 and the tap water supplied from the second introduction path 24b are mixed in the first hot water supply path 36. The control device 180 for the thermal equipment adjusts the opening of the mixing valve 30 so that the temperature of the hot water supplied to the hot water tap 38 matches the set hot water temperature. On the other hand, when the temperature of hot water supplied from tank 10 to first hot water supply path 36 is lower than the set hot water supply temperature, control apparatus 180 for heat equipment passes through first hot water supply path 36 by hot water supply burner 81. Heat the water. The control device 180 for thermal equipment controls the output of the hot water supply burner 81 so that the temperature of the hot water supply water supplied to the hot water tap 38 matches the hot water supply set temperature.

(Heating operation)
The heating operation is an operation in which heating water is heated by the heat pump 50 and heated by the low-temperature heater 78 or the high-temperature heater 76 using the high-temperature heating water. When the execution of the heating operation is instructed by the user, the heating device control device 180 rotates the heating water circulation pump 74. Furthermore, the control device 180 for a thermal device drives the compressor 62 and the fan 56.

  By driving the compressor 62, the refrigerant in the refrigerant circulation path 52 circulates in the order of the compressor 62, the hot water supply heat exchanger 51, the heating heat exchanger 53, the expansion valve 60, and the air heat exchanger 54. In this case, the refrigerant in the refrigerant circulation passage 52 passing through the heating heat exchanger 53 is in a high-temperature and high-pressure gas state. In addition, by driving the heating water circulation pump 74, the heating water in the cistern 70 circulates through the second heating heating path 84. The heating water circulating in the second heating heating path 84 is heated by the heat of the refrigerant in the refrigerant circulation path 52 when passing through the heating heat exchanger 53. The heating water heated by the heating heat exchanger 53 is supplied to the low-temperature heater 78 and the high-temperature heater 76 via the cistern 70. Furthermore, the control device 180 for heat equipment operates the burner 82 for heating as needed. As a result, the high-temperature heater 76 is supplied with the heating water at a higher temperature due to the heating by the heating burner 82. In the heating operation, the temperature of the heating water supplied to the low-temperature heater 78 is set to the low-temperature heating set temperature, and the temperature of the heating water supplied to the high-temperature heater 76 is set to the high-temperature heating set temperature. The operation of the heat pump 50 and the output of the heating burner 82 are adjusted.

(Hot water operation)
The hot-water operation is an operation of hot-watering the bathtub 98. When the user instructs the start of the hot water operation, the heat appliance 140 (hot water supply / heating device) starts the hot water operation. In the hot water operation, the pouring solenoid valve 42 is opened. When the pouring electromagnetic valve 42 is opened, the tap water flows from the tap water supply passage 24 (first introduction passage 24 a) into the lower portion of the tank 10 by the water pressure from the tap water supply source 32. At the same time, the hot-water supply water in the upper part of the tank 10 is supplied to the bathtub 98 via the first hot-water supply passage 36, the bathtub pouring passage 40, and the bathtub water circulation passage 91. In the hot water operation, similarly to the hot water supply operation, the temperature of the water supplied to the bathtub pouring path 40 is adjusted to the hot water set temperature. When the amount of water supplied to the bathtub 98 reaches the hot water set water amount, the hot water operation ends.

(Reheating operation)
The reheating operation is an operation for reheating the bathtub water stored in the bathtub 98. When the user instructs the start of the reheating operation, the thermal device 140 (hot water supply / room heating device) starts the reheating operation. In the reheating operation, the bathtub water circulation pump 99 is driven. Also, the reheating valve 83 is opened to drive the water circulation pump 74 for heating. Thereby, the bathtub water is sucked out from the bottom of the bathtub 98, and is heated by the reheating heat exchanger 97 by heat exchange with the heating water. The heated tub water is returned to the side of the tub 98. In the reheating operation, heating water is heated by the heating burner 82.

(Freezing prevention operation)
The anti-freezing operation prevents the hot water supply water in the hot water supply heat exchanger 51 and the tank water circulation path 20 and the heating water in the heating heat exchanger 53, the second heating heating path 84, and the heating return path 96 from freezing. Driving. Since the hot water supply heat exchanger 51 and a part of the tank water circulation path 20 are arranged outdoors, if the hot water stays inside for a long time in a state where the outside air temperature is low, the hot water may be frozen. There is. Then, when there is a possibility that the hot-water supply water may freeze, the heat appliance 140 (hot-water supply / room heating device) drives the hot-water supply water circulation pump 22. Thereby, the hot-water supply water in the hot-water supply heat exchanger 51 and the tank water circulation path 20 is replaced with the hot-water supply water from the tank 10, and it is possible to prevent the hot-water supply water from being frozen due to long-term stagnation. Similarly, since the heating heat exchanger 53, a part of the second heating heating path 84, and a part of the heating return path 96 are arranged outdoors, the heating water stays therein for a long time while the outside air temperature is low. In such a case, the heating water may freeze. Then, when there is a possibility that the heating water may freeze, the heating device 140 (the hot water supply / heating device) drives the heating water circulation pump 74. As a result, the heating water inside the heating heat exchanger 53, the second heating heating path 84, and the heating return path 96 is replaced with the heating water from the cistern 70, and the heating water freezes due to long-term stagnation. Can be prevented.

  Next, the operation of the power management system 1 will be described with reference to FIG. In the power management system 1, the suppression power Wr, the upper threshold power Wa, and the lower threshold power Wb are set in advance with respect to the power consumption of the entire apartment house 100. The suppression power Wr is set in advance according to the maximum power consumption in the high-voltage collective power receiving service. The suppression power Wr is preset so that the power used for a predetermined time (for example, 30 minutes) in the entire apartment house 100 is equal to or less than the maximum power consumption in the high-voltage collective power receiving service. For example, when the power equal to or more than the suppressed power is used for a predetermined time (for example, 30 minutes), the power becomes equal to or more than the maximum power consumption in the high-voltage collective power receiving service.

  The upper threshold power Wa and the lower threshold power Wb are set in advance according to the suppression power Wr. The upper threshold power Wa is set to, for example, 90% of the suppression power Wr (a value 10% smaller than the suppression power Wr). The lower threshold power Wb is set to, for example, 70% of the suppression power Wr (a value 30% smaller than the suppression power Wr).

  First, at a certain time t1, the heat pump 50 of the heating device 140 is operating in some of the dwelling units 110 of the apartment house 100, and the heat pump 50 of the heating device 140 is not operating in some of the other dwelling units 110. Suppose. The operating heat pump 50 is operating in the normal operation mode of the thermal device 140. The heat pump 50 operates for a heat storage operation. In the normal operation mode, the operation of the heat pump 50 is not suppressed, and the power consumption of the thermal device 140 is not suppressed. As shown in FIG. 5, it is assumed that the total power consumption of all the heat appliances 140 of the power management system 1 (the heat appliances 140 installed in all the dwelling units 110 of the apartment house 100) at the time t1 is w1.

  After that, at time t2, it is assumed that the heat pumps 50 of the thermal devices 140 are started in some of the dwelling units 110 of the apartment house 100, and the number of operating heat pumps 50 increases. It is assumed that the started heat pump 50 operates in the normal operation mode. When the number of operating heat pumps 50 increases, the total power consumption of the total heat appliances 140 of the power management system 1 (the heat appliances 140 installed in all the dwelling units 110 of the apartment house 100) increases accordingly. It is assumed that the total power consumption of all the heat devices 140 at time t2 is w2.

  After that, when the heat pumps 50 of the thermal devices 140 are started in some more dwelling units 110, the total power consumption of all the thermal devices 140 of the power management system 1 increases accordingly. It is assumed that the number of operating heat pumps 50 further increases, and at time t3, the total power consumption of all the heat devices 140 of the power management system 1 becomes w3, and the value becomes equal to or more than the upper threshold power Wa. Then, the control device for collective housing 120 transmits the power suppression instruction to the control devices for dwelling units 130 of all the dwelling units 110. The power suppression instruction is an instruction for suppressing the power consumption of the thermal device 140 of each dwelling unit 110. The dwelling unit control device 130 of each dwelling unit 110 receives the power suppression instruction.

  Next, the dwelling unit control device 130 of each dwelling unit 110 transmits an operation suppression instruction to the thermal device control device 180 of the heating device 140 of each dwelling unit 110 based on the power suppression instruction received from the apartment dwelling unit control device 120. I do. The operation suppression instruction is an instruction for suppressing the operation of the thermal device 140 of each dwelling unit 110. The thermal device control device 180 of each thermal device 140 receives the operation suppression instruction.

  Next, based on the operation suppression instruction received from the dwelling unit control device 130, the control device 180 for the heating device 140 of each dwelling unit 110 suppresses the operation of the heat pump 50 of each heating device 140. Each thermal device control device 180 operates each thermal device 140 in the suppression operation mode. More specifically, thermal device control device 180 suppresses the operation of heat pump 50 of thermal device 140. For example, the control device for a thermal device 180 reduces the rotational speed of the compressor 62 of the heat pump 50 of the thermal device 140 from the rotational speed in the normal operation mode. When each thermal device 140 operates in the suppression operation mode, the power consumption of each thermal device 140 is reduced. As a result, the total power consumption of the total heat equipment 140 of the power management system 1 (the heat equipment 140 installed in all the dwelling units 110 of the apartment house 100) decreases. It is assumed that the total power consumption of all the heat devices 140 of the power management system 1 after the suppression has been reduced to w4.

  After that, when the heat pumps 50 of the thermal devices 140 are started in some more dwelling units 110, the total power consumption of all the thermal devices 140 of the power management system 1 increases accordingly.

  Next, it is assumed that the heat pumps 50 of the thermal equipment 140 are sequentially stopped in some of the dwelling units 110 of the apartment house 100 from time t4 to time t5. For example, it is assumed that the heat storage operation ends and the heat pump 50 stops. Then, with the stop of the heat pump 50, the total power consumption of all the heat devices 140 of the power management system 1 (heat devices 140 installed in all the dwelling units 110 of the apartment house 100) decreases.

  Thereafter, it is assumed that the heat pumps 50 of the thermal equipment 140 are stopped in some of the dwelling units 110, and the number of the stopped (inactive) heat pumps 50 is increased. The number of stopped (non-operating) heat pumps 50 further increases, and at time t5, the total power consumption of all the heat appliances 140 of the power management system 1 becomes w5, and the value becomes equal to or lower than the lower threshold power Wb. Suppose. Then, the control device for collective housing 120 transmits a power return instruction to the control devices for dwelling units 130 of all the dwelling units 110. The power restoration instruction is an instruction for restoring the power consumption of the thermal device 140 of each dwelling unit 110 (to release the suppression of the power consumption). Each dwelling unit control device 130 receives the power return instruction.

  Next, each dwelling unit control device 130 transmits an operation return instruction to the thermal device control device 180 of each thermal device 140 based on the power return instruction received from the apartment house control device 120. The operation return instruction is an instruction for returning the operation of the thermal appliance 140 of each dwelling unit 110 (to release the suppression of the operation). Each thermal equipment control device 180 receives the operation return instruction.

  Next, each thermal equipment control device 180 restores the operation of the heat pump 50 of each thermal equipment 140 based on the operation return instruction received from each dwelling unit control device 130. Each thermal device control device 180 operates each thermal device 140 in the normal operation mode. More specifically, thermal device control device 180 releases the suppression of the operation of heat pump 50 of thermal device 140. When each thermal device 140 operates in the normal operation mode, the power consumption of each thermal device 140 returns to the normal state. As a result, the total power consumption of all the thermal devices 140 of the power management system 1 (the thermal devices 140 installed in all the dwelling units 110 of the apartment house 100) increases. It is assumed that the total power consumption of all the heat devices 140 of the power management system 1 after the return has increased to w6.

  After that, when the heat pumps 50 of the thermal equipment 140 stop in some more dwelling units 110 of the apartment house 100, the total power consumption of all the thermal equipment 140 of the power management system 1 decreases accordingly.

  The configuration and operation of the power management system 1 according to the embodiment have been described above. As described above, the power management system 1 includes a control unit 120 for a dwelling unit installed in the apartment house 100, a control unit 130 for a dwelling unit installed in each of the plurality of dwelling units 110 of the apartment house 100, The thermal equipment 140 is provided in each of the plurality of dwelling units 110 of the house 100. The heat device 140 includes a gas heat source device 150 for heating water, a heat pump 50 for heating water, the tank 10 for storing water heated by the heat pump 50, and a control device 180 for a heat device. The thermal equipment 140 of each dwelling unit 110 can operate in the normal operation mode and in the reduced operation mode in which power consumption is reduced compared to the normal operation mode. The control device for a collective housing 120 transmits a power suppression instruction to the control device for a dwelling unit 130 of each dwelling unit 110 such that the total power consumption of the thermal devices 140 of the plurality of dwelling units 110 is equal to or less than a predetermined suppression power. More specifically, the control unit for apartment house 120 determines that the total power consumption of all the heat appliances 140 of the power management system 1 (heat appliances 140 installed in all the dwelling units 110 of the apartment house 100) is equal to the predetermined upper threshold. When the power becomes equal to or higher than the power Wa, a power suppression instruction is transmitted. The dwelling unit control device 130 of each dwelling unit 110 transmits an operation suppression instruction to the heating device control device 180 of the heating device 140 of the dwelling unit 110 based on the power suppression instruction received from the apartment dwelling unit control device 120. Based on the operation suppression instruction received from each dwelling unit control device 130, the heat device control device 180 of each heat device 140 operates the heat device 140 in the suppression operation mode to suppress the operation of the heat pump 50. Thereby, the total power consumption of all the heat devices 140 of the power management system 1 is set to be equal to or less than the predetermined suppression power Wr.

  According to such a configuration, since the operation of the heat pump 50 of each heat device 140 is controlled in order to suppress the total power consumption of all the heat devices 140, the amount of heat when the water is heated by the heat pump 50 is reduced. However, according to the above configuration, the water (heat medium) can be heated by the gas heat source device 150 (the hot water supply burner 81 and the heating burner 82), so that the water (heat medium) can be reliably heated. Therefore, water (heat medium) can be reliably heated while suppressing the power consumption of each heat device 140. Thereby, the total power consumption of all the heat devices 140 of the power management system 1 can be suppressed, and the electricity rate of the high-voltage collective power receiving service can be suppressed.

  As mentioned above, although one Example was described, the specific aspect is not limited to the said Example. For example, in the above-described embodiment, the control device 180 for a heat appliance suppresses the operation of the heat pump 50 based on the operation suppression instruction. In this case, the heat pump 50 may be stopped. That is, in the suppression operation mode of each thermal device 140, the heat pump 50 of the thermal device 140 stops. When heating the hot water and the heating water after the heat pump 50 is stopped, the water is heated only by the gas heat source device 150 (the hot water burner 81 and the heating burner 82). According to such a configuration, the total power consumption of all the heat devices 140 of the power management system 1 can be further suppressed.

  In another embodiment, when the thermal device control device 180 suppresses the operation of the heat pump 50 of the thermal device 140, the heat pump is controlled so that the power consumption of the thermal device 140 is equal to or less than the set power set by the setting device 190. The operation of 50 may be suppressed. The set power is set by the setting device 190 by the user. According to such a configuration, it is possible to suppress the power consumption of each thermal device 140 to be equal to or less than the set power desired by the user.

  Further, in the above-described embodiment, the thermal equipment 140 is installed in all the dwelling units 110 of the apartment house 100. However, the present invention is not limited to this configuration, and the thermal equipment 140 is not necessarily installed in all the dwelling units 110. Alternatively, the configuration may be such that the thermal equipment 140 is installed in some of the dwelling units 110 of the apartment house 100.

  As described above, specific examples of the present invention have been described in detail, but these are merely examples, and do not limit the scope of the claims. The technology described in the claims includes various modifications and alterations of the specific examples illustrated above. The technical elements described in the present specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings can simultaneously achieve a plurality of objects, and has technical utility by achieving one of the objects.

1: power management system 4: tank unit 6: heat pump unit 8: heat source unit 10: tank 20: tank water circulation path 22: water supply water circulation pump 24: tap water introduction path 24a: first introduction path 24b: second introduction path 30: Mixing valve 32: Tap water supply source 33: Heat source device bypass passage 34: Bypass valve 36: First hot water supply passage 37: Hot water supply heating passage 38: Hot water tap 39: Second hot water supply passage 40: Bathtub pouring passage 42: Note Hot water electromagnetic valve 50: heat pump 51: hot water supply heat exchanger 52: refrigerant circulation path 53: heating heat exchanger 54: air heat exchanger 55: heating device 56: fan 60: expansion valve 62: compressor 70: cistern 72: heating Outgoing path 73: First heating / heating path 74: Water circulation pump 75 for heating: Low temperature heating circuit 76: High temperature heater 77: High temperature heating circuit 78: Low temperature heater 79: Boiler circulation circuit 81: hot water supply burner 82: heating burner 83: reheating heating valve 84: second heating heating path 91: bath water circulation circuit 96: heating return path 97: reheating heat exchanger 98: bathtub 99: bathtub Water circulation pump 100: Apartment house 110: Dwelling unit 120: Control unit for apartment house 130: Control unit for dwelling unit 140: Heating device 150: Gas heat source device 180: Control device for heating device 190: Setting device Wa: Upper threshold power Wb: Lower Threshold power Wr: suppression power

Claims (2)

Control means for an apartment house installed in the apartment house;
Control means for dwelling units installed in each of the plurality of dwelling units of the apartment house;
A gas heat source device that is installed in each of the plurality of dwelling units of the apartment house and heats the heat medium, a heat pump that heats the heat medium, a tank that stores the heat medium heated by the heat pump, and a control device for heat equipment, Equipped with thermal equipment,
The thermal equipment of each dwelling unit can operate in a normal operation mode and a suppressed operation mode in which power consumption is suppressed more than the normal operation mode,
The control means for an apartment house transmits a power suppression instruction to the control means for dwelling units of each dwelling unit when the sum of the power consumption of the heat appliances of the plurality of dwelling units is equal to or more than a predetermined upper threshold power less than the predetermined suppression power, and When the sum of the power consumption of the heat appliances of the dwelling units is less than the lower threshold power less than the upper threshold power, and transmits a power return instruction to the dwelling unit control means of each dwelling unit,
Dwelling control means of each dwelling unit, based on the power restriction instruction received from the collective housing control means transmits an operation inhibition instruction to the thermal device control means of the thermal device of the dwelling unit, received from the collective housing control means Based on the power return instruction, the operation return instruction is transmitted to the thermal appliance control unit of the thermal appliance of the dwelling unit,
The heat equipment control means of each heat equipment operates the heat equipment in the suppression operation mode based on the operation suppression instruction received from each dwelling unit control means to suppress the operation of the heat pump, and from the tank to the heat medium utilization point If the temperature of the supplied heat medium is lower than the predetermined temperature, the gas heat source device is operated to heat the heat medium, and the heat device is operated in the normal operation mode based on the operation return instruction received from each dwelling unit control unit. A power management system that operates to release the suppression of heat pump operation . Each thermal device is provided with setting means for setting power consumption,
2. The electric power according to claim 1, wherein the control unit for each heat appliance suppresses the operation of the heat pump of the heat appliance such that the power consumption of the heat appliance is equal to or less than the set power set by the setting unit. Management system.

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