JP2016008738A - Energy management device, energy management system and energy management method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform appropriate temperature management at a shop where a cooling facility and air conditioning facilities to which demand control is executed are installed.SOLUTION: An energy management device for managing energy at a shop where a cooling facility for performing defrosting operation and a plurality of air conditioning facilities where electrical power restricting control for restricting power consumption for a prescribed time in accordance with an order based on a prescribed schedule is performed comprises: an acquisition part for acquiring an operating state of the cooling facility; and a control part for changing the prescribed schedule on the basis of a controlled state of the prescribed air conditioning facilities identified in accordance with positional relation with the cooling facility when the operating state of the cooling facility acquired by the acquisition part is under the defrosting operation, and performing the electrical power restricting control.

Description

  The present invention relates to an energy management device, an energy management system, and an energy management method.

  A cooling facility such as a refrigeration / refrigeration showcase installed in a store performs a defrosting (defrosting) operation periodically in order to remove frost attached to the built-in evaporator. During the defrosting operation, the cooling function of the cooling facility is stopped, so that the temperature inside the cooling facility is increased.

  On the other hand, in recent years, SEMS (Store Management System) has been introduced in stores (hereinafter referred to as stores) such as supermarkets or convenience stores in order to realize energy saving. As an example of SEMS, the power consumption amount of some of the loads such as a plurality of air conditioners in the store is set so that the accumulated power amount supplied from the grid in the store does not exceed the target power amount every predetermined period. There is demand control to suppress. Specifically, when demand control is applied to a store, control for suppressing power consumption for a predetermined time according to an order based on a predetermined schedule for a plurality of loads in the store (hereinafter, power suppression control). ) Is executed.

  Here, even if it is a case where electric power suppression control is performed with respect to the air conditioner in a store by demand control, the technique which adjusts the temperature in a store appropriately is disclosed (for example, patent document 1). Specifically, when the temperature in the store is not within a predetermined range, the temperature in the store is not excessively increased (or excessively decreased) by controlling so that the power suppression control is not performed on the air conditioning equipment. Can be adjusted appropriately.

JP 2005-337574 A

  However, in a store where an air conditioning facility and a cooling facility are installed, if a certain air conditioning facility is under power suppression control by demand control, the cooling facility located near the air conditioning facility under power suppression control is in defrosting operation. The temperature inside the cooling facility will rise excessively. For this reason, there is a problem that the quality of food in the refrigerator is deteriorated due to an excessive temperature rise.

  Therefore, in order to solve the above-described problems, an object of the present invention is to perform appropriate temperature management in a store in which a cooling facility and an air conditioning facility for which demand control is performed are installed.

  The energy management device according to the first aspect of the present invention includes a cooling facility that performs a defrost operation and a plurality of air conditioning facilities that perform power suppression control that suppresses power consumption for a predetermined time according to an order based on a predetermined schedule. An energy management device that manages energy in a store, wherein an acquisition unit that acquires an operation state of the cooling facility, and an operation state of the cooling facility that is acquired by the acquisition unit is in the defrost operation, the cooling unit And a control unit that changes the predetermined schedule and performs the power suppression control based on a control state of the air conditioning equipment specified according to a positional relationship with the equipment.

  In the energy management device according to the first aspect of the present invention, the specified air conditioning equipment is an air conditioning equipment located closest to the cooling equipment.

  In the energy management device according to the first aspect of the present invention, when the air conditioning facility is in cooling operation and the control state of the identified air conditioning facility is in the power suppression control, the control unit is identified. The predetermined schedule is changed so that the power suppression control for the air conditioning equipment is canceled and the power suppression control is performed for another air conditioning equipment different from the specified air conditioning equipment.

  In the energy management device according to the first aspect of the present invention, the predetermined schedule is changed so as to perform the power suppression control ahead of the air conditioning equipment scheduled to perform the power suppression control next in the predetermined schedule.

  In the energy management device according to the first aspect of the present invention, when the air conditioning facility is in a heating operation and the control state of the identified air conditioning facility is not in the power suppression control, the control unit controls the power suppression control. The predetermined power schedule control is changed so that the power suppression control for the air conditioning equipment in the middle is canceled and the power suppression control is performed for the specified air conditioning equipment.

  In the energy management device according to the first aspect of the present invention, when the power suppression control is started for the same air conditioning facility after the power suppression control for the air conditioning facility is completed, the control unit The predetermined schedule is changed so that the time difference between the end and the start of the suppression control is more than a predetermined interval.

  In the energy management device according to the first aspect of the present invention, the control unit changes the predetermined schedule so that the predetermined time becomes a predetermined time or less.

  The energy management device according to the first aspect of the present invention includes a measuring unit that measures a flow rate and a moving speed of a person in the store, and the control unit is based on the measured flow rate and moving speed of the person, Change the operation of the air conditioning equipment.

  The energy management system according to the second aspect of the present invention includes a cooling facility that performs a defrost operation, and a plurality of air conditioning facilities that perform power suppression control that suppresses power consumption for a predetermined time according to an order based on a predetermined schedule. An energy management system for managing energy in a store, wherein an acquisition unit that acquires an operation state of the cooling facility and an operation state of the cooling facility acquired by the acquisition unit are in the defrosting operation, And a control unit that changes the predetermined schedule and performs the power suppression control based on a control state of the air conditioning equipment specified according to a positional relationship with the equipment.

  The energy management method according to the third aspect of the present invention includes a cooling facility that performs a defrost operation and a plurality of air conditioning facilities that perform power suppression control that suppresses power consumption for a predetermined time according to an order based on a predetermined schedule. An energy management method performed by an energy management device that manages energy in a store, wherein the energy management device acquires an operating state of the cooling facility, and the energy management device is acquired by the acquisition unit When the operation state of the cooling facility is during the defrost operation, the predetermined schedule is changed based on the control state of the air conditioning facility specified according to the positional relationship with the cooling facility, and the power suppression control is performed. Control steps.

  According to the embodiment of the present invention, it is possible to perform appropriate temperature management in a store in which a cooling facility and an air conditioning facility that performs demand control are installed.

FIG. 1 is a diagram showing an energy management system in the present embodiment. FIG. 2 is a functional block diagram of the energy management apparatus in the present embodiment. FIG. 3 is a diagram for explaining the positional relationship between the air conditioning equipment and the cooling equipment in the present embodiment. FIG. 4 is a diagram illustrating an operation of the energy management system when the air conditioning equipment in the present embodiment is in a cooling operation. FIG. 5 is a diagram illustrating the operation of the energy management system when the air conditioning equipment in the present embodiment is in a heating operation. FIG. 6 is a flowchart illustrating a procedure for changing a predetermined schedule when the defrost operation is detected by the energy management apparatus when the air conditioning facility according to the present embodiment is in a cooling operation. FIG. 7 is a flowchart illustrating a procedure for changing the predetermined schedule when the control target of the power suppression control by the energy management apparatus is changed when the air conditioning facility in the present embodiment is in the cooling operation. FIG. 8 is a flowchart showing a procedure for changing the predetermined schedule when the defrosting operation is detected by the energy management apparatus when the air conditioning equipment in the present embodiment is in the heating operation. FIG. 9 is a functional block diagram of the energy management apparatus according to a modification of the present embodiment. It is a figure which shows the information contained in the air-conditioning equipment control information management table in the modification of this embodiment.

  Hereinafter, a power management apparatus and a power management method according to an embodiment of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals.

[This embodiment]
(System configuration)
Below, the energy management system in this embodiment is demonstrated. FIG. 1 is a diagram showing an energy management system 1 in the present embodiment.

  As shown in FIG. 1, the energy management system 1 includes an energy management device 10, an air conditioning facility 20, and a cooling facility 30. The energy management device 1 is communicably connected to each of the air conditioning equipment 20 and the cooling equipment 30 included in the store via a network. The air conditioner 20 includes air conditioner indoor units (hereinafter referred to as air conditioner indoor units) 21 a and 21 b and an air conditioner outdoor unit (hereinafter referred to as air conditioner outdoor unit) 22. The cooling facility 30 includes refrigeration / refrigeration showcases (hereinafter referred to as refrigeration / refrigeration showcases) 31a, 31b, 31c of the cooling facility and refrigeration / refrigeration units (hereinafter referred to as refrigeration / refrigeration units) 32 of the cooling facility.

  The energy management system 1 is a system that performs demand control in a store where a load including the air conditioning equipment 20 and the cooling equipment 30 is installed. The energy management system 1 is also referred to as EMS (Energy Management System) or, particularly, SEMS (Store Energy Management System) as EMS in a store.

  Demand control suppresses the power consumption of some of the multiple loads installed in the store so that the accumulated power supplied from the grid in the store does not exceed the target power amount every predetermined period. Control. Specifically, power suppression control that suppresses power consumption for a predetermined time in accordance with an order based on a predetermined schedule in demand control is executed. Specifically, power suppression control that suppresses power consumption for a predetermined time is executed for one or more loads selected according to an order based on a predetermined schedule by demand control. The power suppression control includes, for example, control for stopping the operation of the load or changing the operation.

  The energy management device 10 is a device that manages energy in a store. The energy management apparatus 10 monitors the power consumption of the load including the air conditioning equipment 20 and the cooling equipment 30 installed in the store, and performs demand control. The energy management apparatus 10 monitors the operation state of a load such as the cooling facility 30 and controls the operation. The energy management apparatus 10 is installed in a back room of a store, for example. However, the energy management apparatus 10 may be installed in a store.

  The air conditioning facility 20 is a facility that receives supply of power through a power line and performs air conditioning. The air conditioning equipment 20 is an air conditioner including an air conditioning indoor unit 21 and an air conditioning outdoor unit 22. The air-conditioning indoor unit 21 is an example of an air-conditioning facility that is installed in a plurality of places in a store, for example. The air conditioning outdoor unit 22 is installed outside the store. The air conditioning outdoor unit 22 is supplied with power from the power source and supplies power to the air conditioning indoor unit 21. The air-conditioning indoor unit 21 and the air-conditioning outdoor unit 22 may be supplied with power from different power sources.

  The cooling facility 30 is a facility that receives supply of power through a power line and performs freezing and refrigeration (cooling). The cooling facility 30 includes a freezer / refrigerator showcase 31 and a freezer / refrigerator 32.

  The refrigerated / refrigerated showcase 31 periodically performs a defrost operation in order to remove frost attached to the built-in evaporator. During the defrosting operation, the cooling function for cooling the inside of the freezer / refrigerated showcase 31 is stopped. In the present embodiment, the refrigeration / refrigeration showcase 31 is an example of a cooling facility having a cooling function and performing a defrosting operation. Therefore, the cooling facility is not limited to the freezing / refrigerating showcase 31, and may be, for example, a freezing / refrigerator for performing a defrosting operation.

(Functional configuration)
The energy management apparatus 10 of this embodiment is demonstrated. FIG. 2 is a functional block diagram of the energy management apparatus 10 of the present embodiment.

  As shown in FIG. 2, the energy management apparatus 10 includes an air conditioning control unit 101, an EMS control unit 102, a management unit 103, an operation state acquisition unit 104, and a power measurement unit 105.

  The air conditioning control unit 101 executes and cancels normal air conditioning control (for example, ON / OFF of the air conditioning indoor unit 21 and change of set temperature) and power suppression control based on an instruction from the EMS control unit 102. The power suppression control is to disable or weaken the cooling or heating function of the indoor unit so that the power consumption is suppressed by stopping the heat pump function of the air conditioning outdoor unit 22. The cancellation of the power suppression control is to operate a heat pump function provided in the stopped air conditioner outdoor unit 22.

  The EMS control unit 102 manages a predetermined schedule set in advance in demand control, and instructs the air conditioning control unit 101 to execute power suppression control for the air conditioning indoor unit 21 in a predetermined time according to the order based on the predetermined schedule. . The number of air conditioning indoor units 21 to be subjected to power suppression control simultaneously in a certain time period is not limited to one, and may be a plurality. Further, the EMS control unit 102 changes the predetermined schedule in the demand control based on the operation state of the cooling facility 30 output from the operation state acquisition unit 104 and the positional relationship between the air conditioning indoor unit 21 and the refrigeration / refrigeration showcase 31. . Details of the process for changing the predetermined schedule in demand control will be described later.

  Here, the positional relationship between the air conditioning indoor unit 21 and the freezing / refrigerating showcase 31 will be described with reference to FIG. FIG. 3 is a diagram for explaining the positional relationship between the air conditioning indoor unit 21 and the freezing / refrigerating showcase 31 in the present embodiment.

  FIG. 3 is a floor view in the store. FIG. 3 shows air conditioner indoor units 21a1, 21a2, 21b1, 21b2, 21c1, 21c2, and freezing / refrigerated showcases 31a, 31b, 31c. The air-conditioning area 210a (air-conditioning area A) shown in FIG. 3 is an area (hereinafter, air-conditioned area) that is air-conditioned by the air-conditioning indoor unit 21a1 and the air-conditioning indoor unit 21a2. The air-conditioning area 210a is an air-conditioning area of the air-conditioning indoor unit 21 that is simultaneously selected as a control target for power suppression control and that is adjacent to each of the air-conditioning indoor units 21. Note that the air conditioning area may include only one air conditioning indoor unit 21. The air conditioning area may be set in advance by a manager of the energy management system 1 or may be automatically set, for example, in units of days or hours. The center 2100a of the air conditioning area 210a is the center position between the position of the air conditioning indoor unit 21a1 and the position of the air conditioning indoor unit 21a2.

  Similarly, the air conditioning area 210b (air conditioning area B) is an air conditioning area of the air conditioning indoor unit 21b1 and the air conditioning indoor unit 21b2. The center 2100b of the air conditioning area 210b is the center position between the position of the air conditioning indoor unit 21b1 and the position of the air conditioning indoor unit 21b2.

  Similarly, the air conditioning area 210c (air conditioning area C) is an air conditioning area of the air conditioning indoor unit 21c1 and the air conditioning indoor unit 21c2. The center 2100c of the air conditioning area 210c is the center position between the position of the air conditioning indoor unit 21c1 and the position of the air conditioning indoor unit 21c2.

  Here, the positional relationship between the air conditioning indoor unit 21 and the refrigeration / refrigeration showcase 31 in the present embodiment refers to the center 2100 and the refrigeration / refrigeration showcase 31 when the air conditioning area 210 includes a plurality of air conditioning indoor units 21. (For example, the position of the center of the freezer / refrigerated showcase 31 in the plan view). When only one air-conditioning indoor unit 21 is included in the air-conditioning area 210, the positional relationship between the air-conditioning indoor unit 21 and the refrigeration / refrigeration showcase 31 is the distance between the air-conditioning indoor unit 21 and the refrigeration / refrigeration showcase 31. It is.

  Returning to FIG. The management unit 103 manages position information of the air conditioning indoor unit 21 and the refrigerated / refrigerated showcase 31 in the store. When a plurality of air-conditioning indoor units 21 are included in the air-conditioning area, the position information is the center position on the plane of the plurality of air-conditioning indoor units 21. The position information in the present embodiment includes a store ID for identifying the store, a floor (floor), and latitude / longitude. The latitude / longitude may be set at the time of installation in advance, or may be managed by using an indoor positioning technique such as IMES (Indoor Messaging System) and ZigBee. The latitude / longitude may be replaced with an area obtained by finely dividing the floor.

  The operation state acquisition unit 104 acquires the operation state of the refrigeration / refrigeration showcase 31 based on the power consumption of the refrigeration / refrigeration showcase 31 measured by the wattmeter side unit 105. Specifically, the operation state acquisition unit 104 detects the defrost operation of the refrigeration / refrigeration showcase 31 when the power consumption of the refrigeration / refrigeration showcase 31 is lower than the power consumption during normal operation. . Then, the operation state acquisition unit 104 notifies the EMS control unit 102 that the refrigeration / refrigeration showcase 31 is in the defrosting operation.

  The wattmeter side unit 105 measures the power consumption for each load (freezer / refrigerated showcase 31) connected via a network. The wattmeter side unit 105 notifies the operation state acquisition unit 104 of the power consumption measured for each load.

(Details of operation)
The operation | movement which changes the predetermined schedule based on the operation state of the freezing / refrigeration showcase 31 in this embodiment and the positional relationship of the air-conditioning indoor unit 21 (air-conditioning equipment) and the freezing / refrigeration showcase 31 is demonstrated.

  First, the operation state acquisition unit 104 monitors the power consumption of the refrigerated / refrigerated showcase 31 notified from the wattmeter side unit 105. When the operation state acquisition unit 104 detects that the monitored power consumption is lower than the power consumption during the normal operation, the operation state acquisition unit 104 determines that the operation state of the refrigerated / refrigerated showcase 31 is in the defrost operation. To do. The operation state acquisition unit 104 notifies the EMS control unit 102 of the identification information of the frozen / refrigerated showcase 31 determined to be in the defrost operation and information indicating that the operation state is in the defrost operation.

  The EMS control unit 102 requests the management unit 103 to search for the location of the air conditioning equipment including the identification information of the refrigeration / refrigeration showcase 31 included in the information notified from the operation state acquisition unit 104.

  Based on the request from the EMS control unit 102, the management unit 103 identifies the air-conditioning indoor unit 21 (or the center 2100 of the air-conditioning area) located closest to the position information corresponding to the identification information of the refrigeration / refrigeration showcase 31. . Next, the management unit 103 notifies the identification information of the identified air conditioning indoor unit 21 to the EMS control unit 102.

  The EMS control unit 102 determines the control state of the power suppression control of the air conditioning indoor unit 21 corresponding to the identification information notified from the management unit 103 based on a predetermined schedule in demand control. Specifically, the EMS control unit 102 determines whether the air conditioning indoor unit 21 corresponding to the notified identification information is currently under power suppression control in a predetermined schedule. The EMS control unit 102 changes the predetermined schedule based on the control state of the power suppression control of the air conditioning indoor unit 21, and executes the power suppression control according to the order of the changed predetermined schedule.

  Next, the operation of the energy management system in each of the case where the air conditioning facility is in the cooling operation and the case of the heating operation will be described. In the following description, the air conditioning indoor unit 21 included in the air conditioning area 210 will be described as one unit in order to simplify the description.

  FIG. 4 is a diagram illustrating the operation of the energy management system 1 when the air conditioning equipment in the present embodiment is in the cooling operation. As a premise in FIG. 4, the air-conditioning indoor units 21a, 21b, and 21c are located closest to the freezing / refrigeration showcases 31a, 31b, and 31c, respectively. “Control” in FIG. 4 indicates that power suppression control is being performed, and “defrost operation” indicates that defrost operation is being performed.

  FIG. 4A is a diagram illustrating an operation of the conventional energy management system 1, that is, the energy management system 1 when the control for changing the predetermined schedule in the present embodiment is not applied.

  As shown to Fig.4 (a), according to the predetermined schedule in demand control, the electric power suppression control is performed for the predetermined time in order of the air-conditioning indoor unit 21a, 21b, 21c, respectively. Here, when the refrigeration / refrigeration showcase 31a is in the defrosting operation, the air conditioning indoor unit 21a is in the power suppression control during a part of the predetermined time period. That is, the air conditioning indoor unit 21a closest to the refrigeration / refrigeration showcase 31a during the defrosting operation is operated with the cooling operation stopped or the cooling is weakened. Therefore, the temperature in the refrigerator / freezer showcase 31a in the time zone in which the defrosting operation and the power suppression control are overlapping is excessively increased.

  FIG. 4B is a diagram illustrating the operation of the energy management system 1 when the control for changing the predetermined schedule in the present embodiment is applied to the air-conditioning indoor unit 21a. In other words, the control for changing the predetermined schedule in the present embodiment is not applied to the air conditioning indoor units 21b and 21c.

  In the example of FIG. 4B, a predetermined schedule for executing power suppression control for the air-conditioning indoor unit 21 after the start of the defrost operation by the freezing / refrigeration showcase 31a is changed as compared with FIG. 4A. Specifically, when the defrost operation is started in the refrigeration / refrigeration showcase 31a, the power suppression control for the air conditioning indoor unit 21a is canceled, the subsequent predetermined schedule is advanced, and the power suppression control for the air conditioning indoor unit 21b. Has been changed to run. That is, the predetermined schedule is changed so that the air conditioning indoor unit 21a located closest to the freezing / refrigerating showcase 31a is not under power suppression control while the freezing / refrigerating showcase 31a is in the defrosting operation. Thereby, it can control so that the temperature in the store | warehouse | chamber of the freezing / refrigeration showcase 31a in defrosting operation may not be raised excessively by the air conditioning indoor unit 21a.

  On the other hand, in the example of FIG. 4B, the change control of the predetermined schedule is not applied to the air conditioning indoor unit 21b. Therefore, during the defrosting operation of the freezer / refrigerated showcase 31b, the air conditioning indoor unit 21b closest to the freezer / refrigerated showcase 31b is under power suppression control, and an excessive temperature in the refrigerator / refrigerated showcase 31b is stored. A rise is caused.

  FIG. 4C is a diagram illustrating the operation of the energy management system 1 when the control for changing the predetermined schedule in the present embodiment is applied to all the air conditioning indoor units 21a, 21b, and 21c.

  In the example of FIG. 4C, compared to FIG. 4B, the predetermined schedule for executing the power suppression control for the air-conditioning indoor unit 21 after the start of the defrost operation by the freezing / refrigeration showcase 31b is changed. Specifically, the power suppression control for the air-conditioning indoor unit 21b is canceled and the power suppression control for the air-conditioning indoor unit 21c is changed to be executed when the defrost operation is started in the freezing / refrigeration showcase 31b. Yes. Furthermore, the order in which the power suppression control is performed is changed from the predetermined schedule so that the power suppression control is executed for the air conditioning indoor units 21a other than the air conditioning indoor unit 21b while the refrigeration / refrigeration showcase 31b is in the defrosting operation. Yes. Thereby, it can control so that the temperature in the store | warehouse | chamber of the freezing / refrigeration showcase 31b which is performing defrost operation | movement is not raised excessively by the air conditioning indoor unit 21b.

  In addition, in the change control of the predetermined schedule, in order to suppress an excessive temperature rise in the specific air-conditioning area 210, it is preferable that the predetermined time during which the power suppression control is executed is controlled to be a predetermined time or less.

  As described above, the change of the predetermined schedule when the air-conditioning indoor unit 21 is in the cooling operation is such that the air-conditioning indoor unit 21 closest to the refrigeration / refrigeration showcase 31 during the defrosting operation is not controlled by the power suppression control. In addition, the order of the controlled objects is changed. Thereby, when the air-conditioning indoor unit 21 is in the cooling operation, it is possible to avoid an excessive temperature rise in the refrigerator / freezer showcase 31 during the defrosting operation.

  FIG. 5 is a diagram illustrating the operation of the energy management system 1 when the air conditioning equipment in the present embodiment is in the heating operation. As a premise in FIG. 5, the air conditioning indoor units 21a, 21b, and 21c are located closest to the freezing / refrigerating showcases 31a, 31b, and 31c, respectively. “Control” in FIG. 5 indicates that power suppression control is being performed, and “defrost operation” indicates that defrost operation is being performed.

  FIG. 5A is a diagram illustrating the operation of the conventional energy management system 1, that is, the energy management system 1 when the control for changing the predetermined schedule in the present embodiment is not applied.

  As shown to Fig.5 (a), according to the predetermined schedule in demand control, the electric power suppression control is performed for the predetermined time in order of the air-conditioning indoor unit 21a, 21b, 21c, respectively. Here, when the refrigeration / refrigeration showcase 31b starts the defrosting operation, the air-conditioning indoor unit 21b closest to the refrigeration / refrigeration showcase 31b is in a normal operation (heating operation). Therefore, the temperature in the refrigerator / freezer showcase 31a in the time zone in which the defrosting operation and the power suppression control are overlapping is excessively increased.

  FIG. 5B is a diagram illustrating the operation of the energy management system 1 when the control for changing the predetermined schedule in the present embodiment is applied to the air-conditioning indoor unit 21b. In other words, the control for changing the predetermined schedule in the present embodiment is not applied to the air conditioning indoor unit 21c.

  In the example of FIG. 5B, a predetermined schedule for executing power suppression control for the air-conditioning indoor unit 21 after the start of the defrost operation by the freezing / refrigeration showcase 31a is changed as compared with FIG. Specifically, when the defrost operation is started in the refrigeration / refrigeration showcase 31b, the power suppression control for the air-conditioning indoor unit 21a is canceled, and the air-conditioning indoor unit 21b located closest to the refrigeration / refrigeration showcase 31b is released. The predetermined schedule is changed so that the power suppression control is executed. Thereby, it can control so that the temperature in the store | warehouse | chamber of the freezing / refrigeration showcase 31b in defrosting operation may not be raised excessively by the heating of the air-conditioning indoor unit 21a.

  On the other hand, in the example of FIG. 5B, the change control of the predetermined schedule is not applied to the air conditioning indoor unit 21c. For this reason, the air conditioning indoor unit 21c closest to the refrigeration / refrigeration showcase 31c is under power suppression control while the refrigeration / refrigeration showcase 31c is in the defrosting operation. A rise is caused.

  FIG.5 (c) is a figure which shows operation | movement of the energy management system 1 in case the control which changes the predetermined schedule in this embodiment is applied with respect to all the air-conditioning indoor units 21a, 21b, 21c.

  In the example of FIG.5 (c), compared with FIG.5 (b), the predetermined schedule which performs the electric power suppression control with respect to the air-conditioning indoor unit 21 after the defrost operation start by the freezing / refrigeration showcase 31b is changed. Specifically, the power suppression control for the air conditioning indoor unit 21b is canceled and the power suppression control for the air conditioning indoor unit 21c is executed while the refrigeration / refrigeration showcase 31c is in the defrosting operation.

  Here, the time difference between when the power suppression control of a certain air conditioning indoor unit 21 (air conditioning indoor unit 21c) ends and when the power suppression control of the same air conditioning indoor unit 21 (air conditioning indoor unit 21c) starts is predetermined. The predetermined schedule is changed so as to be longer than the control prohibition time as an interval. The control prohibition time is provided to suppress an excessive temperature drop in the air-conditioning area.

  In addition, in the change control of the predetermined schedule, in order to suppress an excessive temperature drop in the specific air-conditioning area 210, it is desirable that the predetermined time during which the power suppression control is executed is controlled to be a predetermined time or less.

  As described above, the change of the predetermined schedule when the air-conditioning indoor unit 21 is in the heating operation is such that the air-conditioning indoor unit 21 closest to the refrigeration / refrigeration showcase 31 that is performing the defrosting operation becomes the control target of the power suppression control. In addition, the order of the controlled objects is changed. However, the predetermined schedule is changed so that a predetermined interval (control inhibition time) is provided between the end of the power suppression control and the next start. Thereby, in the case where the air conditioning indoor unit 21 is in the heating operation, it is possible to avoid an excessive temperature rise in the refrigerator / freezer showcase 31 during the defrosting operation.

(Processing procedure for cooling operation)
FIG. 6 is a flowchart showing a procedure for changing the predetermined schedule when the defrost operation is detected by the energy management apparatus 10 when the air conditioning facility in the present embodiment is in the cooling operation.

  In step S <b> 101, the operating state acquisition unit 104 detects that the operating state of the freezer / refrigerated showcase 31 is in the defrosting operation based on a change (decrease) in the power consumption of the freezer / refrigerated showcase 31. The operation state acquisition unit 104 notifies the EMS control unit 102 of identification information of the frozen / refrigerated showcase 31 that is in the defrosting operation and information that indicates that the defrosting operation is in progress.

  In step S102, based on a request from the EMS control unit 102, the management unit 103 searches for and specifies the air-conditioning indoor unit 21 that is closest to the refrigeration / refrigeration showcase 31 that is performing the defrosting operation.

  In step S103, the EMS control unit 102 determines the control state (whether power suppression control is being performed) of the air-conditioning indoor unit 21 closest to the freezing / refrigeration showcase 31 during the defrost operation specified by the management unit 103. To do.

  Here, when it is determined that the control state of the air conditioning indoor unit 21 is not under power suppression control (NO in step S103), the predetermined schedule changing process is terminated. That is, the power suppression control for the air conditioning indoor units 21 is executed in the order based on the predetermined schedule without changing the predetermined schedule.

  On the other hand, when it is determined that the control state of the air conditioning indoor unit 21 is under power suppression control (YES in step S103), in step S104, the EMS control unit 102 is closest to the specified freezing / refrigeration showcase 31. The power suppression control for the air conditioning indoor unit 21 is canceled.

  In step S105, the EMS control part 102 changes the control object of electric power suppression control to the air conditioning indoor unit 21 of the next control object in a predetermined schedule.

  In step S106, based on a request from the EMS control unit 102, the management unit 103 searches for and specifies the refrigeration / refrigeration showcase 31 located closest to the next air conditioning indoor unit 21.

  In step S107, the management unit 103 inquires of the operation state acquisition unit 104 whether or not the refrigeration / refrigeration showcase 31 located closest to the next air conditioning indoor unit 21 is performing a defrost operation. Then, the management unit 103 notifies the EMS control unit 102 of information indicating whether or not the defrosting operation is being performed. Based on the information from the management unit 103, the EMS control unit determines whether the refrigeration / refrigeration showcase 31 located closest to the next air conditioning indoor unit 21 is in the defrosting operation.

  Here, when it is determined that the refrigeration / refrigeration showcase 31 located closest to the next air conditioning indoor unit 21 is performing a defrosting operation (YES in step S107), in step S108, the next air conditioning indoor unit 21 is It is determined whether or not it is the same as the air conditioning indoor unit 21 specified in step S102.

  When it is determined that the next air conditioning indoor unit 21 is the same as the air conditioning indoor unit 21 specified in step S102 (YES in S108), the predetermined schedule changing process is terminated. That is, the power suppression control for the air conditioning indoor units 21 is executed in the order based on the predetermined schedule without changing the predetermined schedule.

  On the other hand, when it is determined that the next air conditioning indoor unit 21 is not the same as the air conditioning indoor unit 21 specified in step S102 (NO in S108), the processing from step S105 onward is executed again.

  If it is determined in step S107 that the refrigeration / refrigeration showcase 31 located closest to the next air conditioning indoor unit 21 is not in the defrosting operation (NO in step S107), the process of step S109 is executed.

  In step S109, the EMS control part 102 performs the power suppression control with respect to the control object of power suppression control with respect to the air conditioning indoor unit 21 of the next control target in step S105.

  In step S110, the subsequent predetermined schedule is changed.

  FIG. 7 is a flowchart showing a procedure for changing the predetermined schedule when the control target of the power suppression control is changed by the energy management apparatus 10 when the air conditioning facility in the present embodiment is in the cooling operation.

  In step S201, the EMS control part 102 transfers a control object to the air-conditioning indoor unit 21 based on the order of a predetermined schedule.

  In step S202, based on a request from the EMS control unit 102, the management unit 103 searches for the refrigeration / refrigeration showcase 31 that is closest to the currently controlled air-conditioning indoor unit 21 to which the control target has been transferred. ,Identify.

  In step S <b> 203, the management unit 103 inquires of the operation state acquisition unit 104 whether or not the refrigeration / refrigeration showcase 31 located closest to the current controlled air conditioning indoor unit 21 is performing a defrost operation. Then, the management unit 103 notifies the EMS control unit 102 of information indicating whether or not the defrosting operation is being performed. Based on the information from the management unit 103, the EMS control unit determines whether or not the refrigeration / refrigeration showcase 31 located closest to the current air-conditioning indoor unit 21 to be controlled is performing a defrosting operation.

  Here, when it is determined that the refrigeration / refrigeration showcase 31 located closest to the current air conditioning indoor unit 21 to be controlled is not in the defrosting operation (NO in step S203), in step S204, the current control target The power suppression control for the air conditioning indoor unit 21 is executed.

  On the other hand, when it is determined that the refrigeration / refrigeration showcase 31 located closest to the current air-conditioning indoor unit 21 to be controlled is in the defrosting operation (YES in step S203), the processing from step S205 to step S210 is executed. Is done. Each process from step S205 to step S210 corresponds to each process from step S105 to step S110 in FIG.

(Processing procedure for heating operation)
FIG. 8 is a flowchart illustrating a procedure for changing the predetermined schedule when the defrost operation is detected by the energy management apparatus 10 when the air conditioning facility according to the present embodiment is in the heating operation.

  In step S <b> 301, the operation state acquisition unit 104 detects that the operation state of the freezer / refrigerated showcase 31 is in the defrost operation based on the change (decrease) in the power consumption of the freezer / refrigerated showcase 31. The operation state acquisition unit 104 notifies the EMS control unit 102 of identification information of the frozen / refrigerated showcase 31 that is in the defrosting operation and information that indicates that the defrosting operation is in progress.

  In step S302, based on the request from the EMS control unit 102, the management unit 103 searches for and specifies the refrigeration / refrigeration showcase 31 located closest to the current air-conditioning indoor unit 21 to be controlled.

  In step S <b> 303, the management unit 103 inquires of the operation state acquisition unit 104 whether or not the refrigeration / refrigeration showcase 31 located closest to the current controlled air conditioning indoor unit 21 is performing a defrost operation. Then, the management unit 103 notifies the EMS control unit 102 of information indicating whether or not the defrosting operation is being performed. Based on the information from the management unit 103, the EMS control unit determines whether or not the refrigeration / refrigeration showcase 31 located closest to the current air-conditioning indoor unit 21 to be controlled is performing a defrosting operation.

  Here, when it is determined that the refrigeration / refrigeration showcase 31 located closest to the current air-conditioning indoor unit 21 to be controlled is in the defrosting operation (YES in step S303), the predetermined schedule changing process is terminated. . That is, the power suppression control for the air conditioning indoor units 21 is executed in the order based on the predetermined schedule without changing the predetermined schedule.

  On the other hand, when it is determined that the refrigeration / refrigeration showcase 31 located closest to the current air-conditioning indoor unit 21 to be controlled is not in the defrosting operation (NO in step S303), in step S304, the management unit 103 determines that the EMS Based on the request from the control unit 102, the air-conditioning indoor unit 21 closest to the refrigeration / refrigeration showcase 31 during the defrosting operation is searched and specified.

  In step S305, the EMS control unit 102 determines the control state (whether power suppression control is being performed) of the air conditioning indoor unit 21 closest to the freezing / refrigeration showcase 31 during the defrost operation specified by the management unit 103. To do.

  Here, when it is determined that the control state of the air conditioning indoor unit 21 is under power suppression control (YES in step S305), the predetermined schedule changing process is terminated. That is, the power suppression control for the air conditioning indoor units 21 is executed in the order based on the predetermined schedule without changing the predetermined schedule.

  On the other hand, when it is determined that the control state of the air conditioning indoor unit 21 is not under power suppression control (NO in step S305), in step S306, the closest control prohibition time of the air conditioning indoor unit 21 specified in step S304 is investigated. The

  In step S307, it is determined whether or not the present time is within the control inhibition time.

  If it is determined that the current time is within the control inhibition time (YES in step S307), the process waits until the control inhibition time has elapsed in step S308.

  In step S309, it is determined whether or not the refrigerated / refrigerated showcase 31 located in step S302 is in a defrosting operation.

  If it is determined that the refrigerated / refrigerated showcase 31 is not in a defrosting operation (NO in step S309), the predetermined schedule changing process is terminated. That is, the power suppression control for the air conditioning indoor units 21 is executed in the order based on the predetermined schedule without changing the predetermined schedule.

  On the other hand, when it is determined that the refrigerated / refrigerated showcase 31 is in the defrosting operation (YES in step S309), the processes in and after step S306 are executed again.

  Here, when it is determined in step S307 that the current time is not within the control prohibition time (NO in step S307), in step S310, the EMS control unit 102 specifies the control target of the power suppression control in step S304. Change to the closest air conditioning indoor unit 21.

  In step S311, the EMS control unit 102 cancels the power suppression control for the air-conditioning indoor unit 21 that is currently controlled.

  In step S312, the EMS control part 102 performs the power suppression control with respect to the control object of electric power suppression control with respect to the nearest air-conditioning indoor unit 21 in which the control object was changed by step S310.

  In step S313, the subsequent predetermined schedule is changed.

  As described above, according to the energy management system 1 of the present embodiment, when the air-conditioning indoor unit 21 (air-conditioning equipment) is in the cooling operation, the refrigeration / refrigeration showcase 31 (cooling equipment) that is performing the defrosting operation is the most. The order of the control targets in the predetermined schedule can be changed so that the nearby air conditioning indoor unit 21 (air conditioning equipment) is not a control target of the power suppression control.

  On the other hand, according to the energy management system 1 of the present embodiment, when the air conditioning indoor unit 21 (air conditioning equipment) is in the heating operation, the air conditioning indoor unit closest to the refrigeration / refrigeration showcase 31 (cooling equipment) that is in the defrosting operation. The order of control targets in the predetermined schedule can be changed so that 21 (air conditioning equipment) is a control target of power suppression control.

  Thereby, even if the air-conditioning indoor unit 21 is in either the cooling operation or the heating operation, it is possible to avoid an excessive temperature rise in the refrigerator / refrigeration showcase 31 (cooling facility) during the defrosting operation. Accordingly, it is possible to prevent the quality of food in the refrigerator / freezer showcase 31 (cooling facility) from deteriorating.

[Modification of this embodiment]
The energy management system 1 in the modification of this embodiment is a system that controls the operation of the air conditioning indoor unit 21 (air conditioning equipment) based on the flow rate of people and the movement speed of people in the store. The modification will be described focusing on differences from the present embodiment.

  FIG. 9 is a functional block diagram of the energy management apparatus 10a in a modification of the present embodiment.

  As shown in FIG. 9, the energy management device 10a in the modification of the present embodiment includes a human flow rate / movement speed measurement unit 106, a determination unit 107, in addition to the functions of the energy management device 10 shown in FIG. Is provided. The human flow / movement speed measuring unit 106 is connected to a human sensor 40 that detects the presence and movement of a plurality of people installed in the store.

  The human sensor 40 is an infrared sensor, an ultrasonic sensor, a visible light sensor, or a sensor in which these are combined. The human sensor 40 is installed at an entrance / exit in a store, a cash register, each sales floor, and the like.

  The human flow rate / movement speed measurement unit 106 measures the human flow rate and the movement speed of the person based on information indicating the presence and movement of the person detected by the human sensor 40.

  Based on the flow rate and movement speed of the person measured by the human flow rate / movement speed measurement unit 106 and the air conditioning control information management table shown in FIG. The operation to be executed by the indoor unit 21 is determined.

  The management unit 103 in the modification manages the air conditioning control information management table shown in FIG. FIG. 10 is a diagram illustrating information included in the air conditioning equipment control information management table in the modification of the present embodiment.

  As shown in FIG. 10, in the air conditioning control information management table, as data items, “ID”, “human flow”, “human moving speed”, “cooling” and “heating” are management numbers. The operation of the air conditioning indoor unit 21 is included.

  The “human flow rate” is the number of people in the place where the human sensor 40 is installed. “Human flow rate” is indicated by “large”, “low” or the like based on a predetermined standard, for example. The “person movement speed” is a person movement speed at the place where the human sensor 40 is installed. The “person movement speed” is indicated by “fast”, “slow” or the like based on a predetermined standard, for example. “Cooling” is the operation of the air conditioning indoor unit 21 when the air conditioning indoor unit 21 is in the cooling operation. The operation of the air conditioning indoor unit 21 includes types such as “strong” and “weak”. “At the time of heating”, the air conditioning indoor unit 21 is the operation of the air conditioning indoor unit 21 during the heating operation. The operation of the air conditioning indoor unit 21 includes types such as “strong” and “weak”. Each item may be managed as a numerical value.

  The air conditioning control in the modified example is performed in the following procedure. First, the human flow rate / movement speed measurement unit 106 measures the human flow rate and the movement speed of the person based on the information indicating the presence and movement of the person detected by the human sensor 40. Next, the human flow rate / movement speed measurement unit 106 notifies the determination unit 107 of the measured human flow rate and human movement speed.

  The determination unit 107 determines the operation of the air conditioning indoor unit 21 based on the notified flow rate and movement speed of the person and the air conditioning equipment control information management table managed by the management unit 103. For example, when the measured “human flow rate” is large and the “human movement speed” is slow, the operation of “strong” during cooling and “strong” during heating corresponding to ID “2” of the air conditioning equipment control information management table Is selected.

  The determination unit 107 operates based on the selected operation with respect to the air conditioning indoor unit 21 (air conditioning equipment) corresponding to the detected location (location where the human sensor 40 is installed) via the air conditioning control unit 101. Air-conditioning control to operate at

  By the air conditioning control described above, the energy management system 1 in the modified example can control the operation of the air conditioning indoor unit 21 based on the flow rate of the person and the movement speed of the person in the store.

  Thereby, for example, there are many people, such as the vicinity of a cash register, and it can be controlled to increase the air conditioning in a place where people stay, and the comfort in the store can be improved.

[Other Embodiments]
In this embodiment, the energy management apparatus 10 may be provided in HEMS (Home Energy Management System), may be provided in BEMS (Building Energy Management System), and may be provided in FEMS (Factor Energy Management). It may be done.

DESCRIPTION OF SYMBOLS 1 Energy management system 10 Energy management apparatus 101 Air-conditioning control part 102 EMS control part 103 Management part 104 Operation | movement state acquisition part 105 Electric power measurement part 106 Human flow rate / movement speed measurement part 107 Judgment part 20 Air-conditioning equipment 21 Indoor unit (air-conditioning) Indoor unit)
22 Air conditioner outdoor unit (air conditioner outdoor unit)
30 Cooling equipment 31 Refrigeration / refrigeration showcase for cooling equipment 32 Refrigeration / refrigeration machine for cooling equipment 40 Human sensor

Claims (10)

An energy management device that manages energy in a store provided with a cooling facility that performs a defrost operation and a plurality of air conditioning facilities that perform power suppression control that suppresses power consumption for a predetermined time according to an order based on a predetermined schedule,
An acquisition unit for acquiring an operating state of the cooling facility;
When the operation state of the cooling equipment acquired by the acquisition unit is during the defrost operation, the predetermined schedule is changed based on the control state of the air conditioning equipment specified according to the positional relationship with the cooling equipment. And an energy management device having a control unit that performs the power suppression control.   The energy management apparatus according to claim 1, wherein the specified air conditioning equipment is an air conditioning equipment located closest to the cooling equipment.   When the air conditioning facility is in cooling operation and the control state of the identified air conditioning facility is in the power suppression control, the control unit cancels the power suppression control for the identified air conditioning facility, The energy management device according to claim 1 or 2, wherein the predetermined schedule is changed so that the power suppression control is performed on another air conditioning facility different from the identified air conditioning facility.   The energy management device according to claim 3, wherein the predetermined schedule is changed so that the power suppression control is performed by moving forward the air conditioning facility that is scheduled to perform the power suppression control next in the predetermined schedule.   When the air conditioning facility is in a heating operation and the control state of the identified air conditioning facility is not in the power suppression control, the control unit cancels the power suppression control for the air conditioning facility in the power suppression control. The energy management apparatus according to claim 1, wherein the predetermined schedule is changed so that the power suppression control is performed on the identified air conditioning equipment.   When the power suppression control is started for the same air conditioning equipment after the power suppression control for the air conditioning equipment is completed, the control unit has a predetermined time difference between the end of the power suppression control and the start time. The energy management apparatus according to claim 5, wherein the predetermined schedule is changed so as to be more than the interval.   The energy management device according to claim 1, wherein the control unit changes the predetermined schedule so that the predetermined time is equal to or less than a predetermined time. It further has a measuring unit that measures the flow rate and movement speed of the person in the store,
The energy management device according to claim 1, wherein the control unit changes an operation of the air conditioning equipment based on the measured flow rate and movement speed of the person. An energy management device that manages energy in a store in which a cooling facility that performs a defrost operation and a plurality of air conditioning facilities that perform power suppression control that suppresses power consumption for a predetermined time according to an order based on a predetermined schedule are provided An energy management system,
The energy management device includes:
An acquisition unit for acquiring an operating state of the cooling facility;
When the operation state of the cooling equipment acquired by the acquisition unit is in the defrost operation, the predetermined schedule is changed based on the control state of the air conditioning equipment specified according to the positional relationship with the cooling equipment, An energy management system including a control unit that performs the power suppression control. Energy management performed by an energy management device that manages energy in a store provided with a cooling facility that performs defrosting operation and a plurality of air conditioning facilities that perform power suppression control that suppresses power consumption for a predetermined time in accordance with an order based on a predetermined schedule A method,
An acquisition step of acquiring an operating state of the cooling facility;
When the operation state of the cooling equipment acquired by the acquisition unit is in the defrost operation, the predetermined schedule is changed based on the control state of the air conditioning equipment specified according to the positional relationship with the cooling equipment, An energy management method including a control step of performing the power suppression control.

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