WO2017199298A1

WO2017199298A1 - Air conditioning system

Info

Publication number: WO2017199298A1
Application number: PCT/JP2016/064502
Authority: WO
Inventors: 豊大薮田
Original assignee: 三菱電機株式会社
Priority date: 2016-05-16
Filing date: 2016-05-16
Publication date: 2017-11-23

Abstract

Provided is an air conditioning system comprising: a first air conditioning device in which an indoor unit and an outdoor unit are connected by refrigerant piping through which a refrigerant is circulated; a second air conditioning device in which a heat source unit and an indoor unit for the heat source are connected by heating medium piping through which a heating medium is circulated; and a management device that collects and manages operation information indicating an operation state of the first air conditioning device and the second air conditioning device and power amount information indicating the amount of power consumed. On the basis of the operation information and the power amount information, the management device performs demand control to control the air conditioning capacity of the first air conditioning device and the second air conditioning device so that the total amount of power consumption of the first air conditioning device and the second air conditioning device within a fixed time period does not exceed a power target value.

Description

Air conditioning system

The present invention relates to an air conditioning system that performs demand control that suppresses the amount of power used by an air conditioner to a constant amount.

Conventionally, an air conditioning system includes a controller that performs demand control so that the amount of power used does not exceed a certain amount and manages the air conditioning apparatus (see, for example, Patent Document 1). The air conditioner of Patent Document 1 is a compression / expansion type air conditioner configured by an outdoor unit including a compressor and an indoor unit including an indoor fan. And the controller of patent document 1 restrict | limits the air-conditioning capability of an air conditioning apparatus according to an energy saving contract so that energy consumption may not exceed target energy amount.

On the other hand, in a large-scale building or the like, a plurality of air-conditioning target spaces are often air-conditioned using a central type air conditioner using a heat source machine such as a chiller. However, since the central type air conditioner may become inefficient due to the division of the air-conditioning target space or the like, it is often used together with the compression / expansion type air conditioner.

Here, in a building where a compression / expansion air conditioner and a central air conditioner are used together, in order to perform demand control, the controller has an air conditioning capacity for each of the compressor and the heat source machine. It is necessary to make restrictions. In order to prevent the total power consumption of the compression / expansion air conditioner and the central air conditioner from exceeding a certain value, an administrator who sets demand control is permitted. The total amount of electric power needs to be distributed and set between the compression / expansion type air conditioner and the central type air conditioner.

JP 2004-116972 A

However, the demand control by the controller of Patent Document 1 is controlled by a compression / expansion air conditioner and cannot be applied to a central air conditioner. That is, the air conditioning system of Patent Document 1 has a problem that it cannot perform demand control in which a compression / expansion air conditioning apparatus and a central air conditioning apparatus are linked.

The present invention has been made to solve the above-described problems, and provides an air conditioning system that realizes demand control in which a compression / expansion air conditioning apparatus and a central air conditioning apparatus are linked. For the purpose.

The air conditioning system according to the present invention includes a first air conditioner in which an indoor unit and an outdoor unit are connected by a refrigerant pipe to circulate the refrigerant, and a heat source unit and a heat source indoor unit are connected by a heat medium pipe to generate heat. A second air conditioner that circulates the medium, and a management device that collects and manages the operation information indicating the operation state of the first air conditioner and the second air conditioner and the energy information indicating the power consumption. Then, the management device is based on the operation information and the electric energy information so that the total power consumption of the first air conditioner and the second air conditioner within a certain period does not exceed the power target value. Demand control is performed to limit the air conditioning capability of the air conditioner and the second air conditioner.

The present invention controls the total power consumption of the first air conditioner and the second air conditioner within a certain period so as not to exceed the power target value. Since it is not necessary to distribute between the conditioning apparatus and the second air conditioning apparatus, the demand control can be realized by linking the compression-expansion first air conditioning apparatus and the central second air conditioning apparatus.

It is a mimetic diagram showing composition of an air harmony system in an embodiment of the invention. It is a block which shows the functional structure of the management apparatus of FIG. It is a flowchart which shows the operation | movement of the demand control by the management apparatus of FIG.

Embodiment.
FIG. 1 is a schematic diagram showing a configuration of an air conditioning system according to an embodiment of the present invention. With reference to FIG. 1, it demonstrates centering on the structure which concerns on the system of the communication system of the air conditioning system 100, and a control system. As shown in FIG. 1, the air conditioning system 100 includes a management device 10, a first air conditioning device 20, and a second air conditioning device 30.

The first air conditioner 20 includes an outdoor unit 21, an indoor unit 22a, and an indoor unit 22b. The outdoor unit 21, the indoor unit 22a, and the indoor unit 22b are connected by a refrigerant pipe and configured to circulate the refrigerant. Although not shown, the outdoor unit 21 includes a compressor that compresses the refrigerant, a heat source side heat exchanger composed of, for example, a fin-and-tube heat exchanger, a heat source side fan that blows air to the heat source side heat exchanger, have. Each of the indoor units 22a and 22b includes an expansion valve made of, for example, an electromagnetic valve, a load-side heat exchanger made of, for example, a fin-and-tube heat exchanger, a load-side fan for blowing air to the load-side heat exchanger, have. The first air conditioner 20 has a refrigerant circuit in which a compressor, a heat source side heat exchanger, an expansion valve, and a load side heat exchanger are connected via a refrigerant pipe. The 1st air conditioning apparatus 20 performs the air conditioning of the space for air conditioning by changing the pressure of the refrigerant | coolant which flows in refrigerant | coolant piping, and making a refrigerant | coolant heat-absorb or heat-radiate.

The second air conditioner 30 includes a heat source unit 31, a heat source indoor unit 32a, and a heat source indoor unit 32b. The heat source unit 31, the heat source indoor unit 32a, and the heat source indoor unit 32b are connected by a heat medium pipe, and the heat medium is circulated. The second air conditioner 30 in the present embodiment circulates water as a heat medium. That is, the heat source device 31 is made of, for example, a chiller, and produces hot water or cold water. Hereinafter, hot water or cold water is referred to as hot / cold water. The heat source

indoor units

32a and 32b are made of, for example, a fan coil unit, and perform heat exchange using the heat of hot / cold water produced by the heat source unit 31 to perform air conditioning of the air-conditioning target space. The heat source unit 31 is configured to keep the water in the heat storage tank at a constant temperature according to the set temperature regardless of the operation state of the heat source

indoor units

32a and 32b.

In the present embodiment, the outdoor unit 21, the indoor units 22a and 22b, the heat source unit 31, and the heat source

indoor units

32a and 32b are devices to be managed by the management apparatus 10. Therefore, hereinafter, the outdoor unit 21, the indoor units 22a and 22b, the heat source unit 31, and the heat source

indoor units

32a and 32b are collectively referred to as devices to be managed or simply as devices. Here, each device to be managed is operated by a different power source instead of a uniform AC power source. That is, each device to be managed corresponds to different power supply standards such as AC200V single phase, AC200V3 phase, AC400V3 phase, etc., and is connected to different power supply lines.

As shown in FIG. 1, the outdoor unit 21 is connected to a power source 300a via an outdoor unit power line 210, and the indoor units 22a and 22b are connected to a power source 300b via an indoor unit power line 220. ing. The heat source unit 31 is connected to the power source 300c via the heat source unit power line 230, and the heat source

indoor units

32a and 32b are connected to the power source 300d via the heat source indoor unit power line 240.

Further, the air conditioning system 100 includes watt-hour meters 40a to 40b, a pulse input device 50a, and a pulse input device 50b. The watt hour meter 40 a is connected to the outdoor unit power line 210, and the watt hour meter 40 b is connected to the indoor unit power line 220. The watt hour meter 40c is connected to the heat source unit power line 230, and the watt hour meter 40d is connected to the heat source indoor unit power line 240.

The watt-hour meter 40a is connected to the pulse input device 50a by a pulse signal line 250a. The watt hour meter 40b is connected to the pulse input device 50a by a pulse signal line 250b. The watt-hour meter 40c is connected to the pulse input device 50b by a pulse signal line 250c. The watt-hour meter 40d is connected to the pulse input device 50b by a pulse signal line 250d.

The watt-hour meters 40a to 40b have a pulse transmission function for transmitting a pulse signal indicating the electric energy. The watt-hour meter 40a and the watt-hour meter 40b output a pulse signal to the pulse input device 50a when the power amount exceeds a reference value set to, for example, 1 kWh. The watt-hour meter 40c and the watt-hour meter 40d output a pulse signal to the pulse input device 50b when the power amount exceeds a reference value.

Each of the pulse input device 50a and the pulse input device 50b has a plurality of input ports (not shown) for inputting pulse signals. In the present embodiment, each of the pulse input device 50a and the pulse input device 50b has at least two input ports. Therefore, the pulse input device 50a can take in the pulse signals output from the watt-hour meter 40a and the watt-hour meter 40b. Further, the pulse input device 50b can take in pulse signals output from the watt-hour meter 40c and the watt-hour meter 40d.

The pulse input device 50a counts the pulse signals output from the watt-hour meter 40a and the watt-hour meter 40b, thereby integrating the power consumption of the indoor units 22a and 22b and the like. The pulse input device 50b counts the pulse signals output from the watt hour meter 40c and the watt hour meter 40d, and thereby integrates the power consumption amount of the heat source unit 31 and the like. That is, the pulse input device 50a and the pulse input device 50b integrate the pulse signals from the watt hour meters 40a to 40d to calculate the power consumption amount of each device.

The management device 10, the outdoor unit 21, the indoor unit 22a, the indoor unit 22b, the heat source unit 31, the heat source indoor unit 32a, the heat source indoor unit 32b, the pulse input device 50a, and the pulse input device 50b are connected by a transmission line 200. ing. The transmission line 200 is a dedicated transmission line for the air conditioning system 100.

Each device connected by the transmission line 200 can communicate signals including various data via the transmission line 200. For example, the management device 10 transmits an operation command signal or the like based on the content of the setting operation to each device to be managed. Here, each device connected by the transmission line 200 has, for example, a unique number and address in communication and is distinguished. In addition, each device connected by the transmission line 200 transmits a signal including data of a transmission destination and a transmission source address when performing communication.

The outdoor unit 21 is connected to the power source 300a through the outdoor unit power line 210 and the watt hour meter 40a. The outdoor unit 21 is operated by electric power supplied from the power supply 300a. The indoor unit 22a and the indoor unit 22b are connected to the power source 300b through the indoor unit power line 220 and the watt hour meter 40b. The indoor unit 22a and the indoor unit 22b are operated by electric power supplied from the power supply 300b.

The heat source unit 31 is connected to the power source 300c through the heat source unit power line 230 and the watt hour meter 40c. The heat source device 31 is operated by electric power supplied from the power source 300c. The heat source indoor unit 32a and the heat source indoor unit 32b are connected to the power source 300d through the heat source indoor unit power line 240 and the watt hour meter 40d. The heat source indoor unit 32a and the heat source indoor unit 32b are operated by electric power supplied from the power supply 300d.

The management device 10 has an input unit 10A that accepts a setting operation by an administrator or the like. The input unit 10A may include an operation button or the like, and may be a mouse or a keyboard. The input unit 10A may be configured with a touch panel or the like. Further, the input unit 10A is configured to have a communication function for communicating with a mobile terminal such as a mobile phone, a smartphone, a tablet PC, or a notebook PC, and configured to accept a setting operation from the mobile terminal. May be.

The management device 10 performs setting processing such as initial setting processing in response to an operation by an administrator or the like. Moreover, the management apparatus 10 collects and manages the operation information which shows the operation state of the 1st air conditioning apparatus 20 and the 2nd air conditioning apparatus 30, and the electric energy information which shows power consumption. That is, the management apparatus 10 acquires the operation information and power consumption of the outdoor unit 21, the indoor unit 22a, and the indoor unit 22b from the pulse input device 50a via the transmission line 200. In addition, the management device 10 acquires operation information and power consumption of the heat source unit 31, the heat source indoor unit 32a, and the heat source indoor unit 32b from the pulse input device 50b via the transmission line 200.

Furthermore, the management apparatus 10 predicts the power consumption amount of each device to be managed from the operation information and power amount information of each device to be managed. And the management apparatus 10 calculates | requires the total prediction electric power value which is the predicted value of the electric energy consumption in each whole apparatus based on the result of prediction of the electric power consumption of each apparatus of management object. In addition, if the total predicted power value is equal to or greater than the power target value, the management device 10 performs demand control on each device to be managed, and the air conditioning capability of the first air conditioner 20 and the second air conditioner 30 This is a limitation.

FIG. 2 is a block diagram showing a functional configuration of the management apparatus 10 of FIG. The management apparatus 10 is a centralized controller that can individually control the outdoor unit 21, the indoor units 22a and 22b, the heat source unit 31, and the heat source

indoor units

32a and 32b. The management apparatus 10 monitors each managed device and accepts an operation on each managed device. Moreover, the management apparatus 10 has a schedule management function and a function for managing data such as an operation state and power amount information of each device to be managed.

As illustrated in FIG. 2, the management apparatus 10 includes a communication unit 101, an operation information collection unit 102, an operation information storage unit 103, an operation information setting unit 104, and an operation information processing unit 105. . In addition, the management apparatus 10 includes a power amount information collecting unit 106, a power amount information storage unit 107, a power amount information setting unit 108, and a power amount information processing unit 109. Furthermore, the management device 10 includes a control content setting unit 110, a control content processing unit 111, a control content storage unit 112, an operation information change unit 113, and a change storage unit 114.

The communication unit 101 is for connecting the management apparatus 10 to the transmission line 200. The communication unit 101 receives a signal flowing through the transmission line 200 and extracts data necessary for demand control. That is, the communication unit 101 has a function of analyzing a general voltage signal flowing through the transmission line 200 and capturing it as a communication signal. The communication unit 101 has a function of converting a communication signal into a voltage.

The driving information collection unit 102 performs processing for collecting data related to the driving state as driving information from the data extracted by the communication unit 101, and stores the collected driving information in the driving information storage unit 103. The driving information collecting means 102 has time measuring means such as a timer in order to perform driving information collecting processing at regular time intervals. Here, the data relating to the operation state is data indicating, for example, the start / stop of each device to be managed, the operation mode, the set wind speed, the set wind direction, the set temperature, and the save operation information. In other words, the operation information collection unit 102 collects information indicating the operation state of each managed device as operation information. The operation information collection unit 102 collects data such as operation state and set temperature for each device to be managed.

The operation information collecting means 102 collects data such as the start / stop of the heat source unit 31 and the set water temperature and the data such as the start / stop of the heat source

indoor units

32a and 32b and the set temperature as operation information. The driving information storage means 103 stores and saves the driving information collected by the driving information collection means 102 individually.

The operation information setting unit 104 is a setting unit for operating each device to be managed, and performs a setting process regarding the operation content in the input unit 10A. The operation information setting means 104 receives and sets an input operation relating to the start / stop of each device to be managed or a set temperature. The administrator or the like can operate the start / stop of each device to be managed, the set temperature, and the like via the operation information setting unit 104 by operating the input unit 10A. The driving information setting unit 104 has a function of setting management information for associating the driving information collected by the driving information collecting unit 102 with each device to be managed.

The driving information processing unit 105 assigns the driving information stored in the driving information storage unit 103 to each device to be managed based on the contents of the management information set by the driving information setting unit 104, and for each device to be managed. It asks for driving information. The driving information processing unit 105 stores the driving information for each managed device after the allocation process in the driving information storage unit 103 again. The driving information processing unit 105 compares the content set by the driving information setting unit 104 with the driving information indicating the driving state of each device that is actually managed and acquired by the driving information collecting unit 102. It is determined whether or not to change. More specifically, the operation information processing unit 105 determines, for example, whether to change the air volume of the fan to a weak wind, whether to forcibly stop the compressor, and the like. The operation information processing means 105 determines whether or not to increase the set temperature during the cooling operation, and determines whether or not to decrease the set temperature during the heating operation.

The power amount information collecting unit 106 performs processing for collecting data output from the pulse input devices 50a and 50b included in the data extracted by the communication unit 101 as power amount information. The power amount information collecting unit 106 stores the collected power amount information in the power amount information storage unit 107. The electric energy information collecting means 106 has time measuring means such as a timer in order to perform the operation information collecting process at regular time intervals. The electric energy information storage means 107 is for individually storing and storing the operation information collected by the operation information collection means 102.

The power amount information setting means 108 performs setting processing related to the operation content at the input unit 10A. The power amount information setting unit 108 sets allocation information indicating which device among the devices to be managed is the power amount information. In addition, the power amount information setting unit 108 can set information indicating whether the power amount information is used or not used, and can finely adjust the power amount information.

The power amount information processing unit 109 performs processing for allocating the power amount information for each device to be managed based on the allocation information set by the power amount information setting unit 108. That is, the power amount information processing unit 109 assigns the power amount information acquired by the power amount information collection unit 106 to each management target device based on the contents set by the power amount information setting unit 108, and The power consumption for each device is obtained. The power amount information processing unit 109 stores the power consumption amount of each managed device in the power amount information storage unit 107.

The control content setting means 110 performs processing for setting the priority of control content for each managed device and processing for setting a threshold value for demand control. Further, the control content setting means 110 sets the content of demand control such as changing the set temperature of each device to be managed or stopping the operation. The threshold for demand control includes a power target value that is a criterion for starting demand control. The control content setting unit 110 stores the setting content in the control content storage unit 112. The priority order may be set between the first air conditioner 20 and the second air conditioner 30, or may be set for each device to be managed.

The priority is set in consideration of the operating capacity of the compressor, the fan capacity, the characteristics of the first air conditioner 20 that is the compression / expansion system, the characteristics of the second air conditioner 30 that is the central system, and the like. Good. For example, when the indoor unit 22a and the heat source indoor unit 32a air-condition the same air-conditioning target space, the indoor unit 22a and the heat source indoor unit are set according to the temperature difference ΔT between the temperature of the air-conditioning target space and the set temperature. You may make it change the priority with 32a. For example, when the temperature difference ΔT is smaller than a certain temperature, the priority of the demand control of the indoor unit 22a is increased, and when the temperature difference ΔT is larger than the certain temperature, the demand control of the heat source indoor unit 32a is performed. You may make it make a priority high. In this way, when the temperature difference ΔT is smaller than a certain temperature, it is possible to perform demand control such as increasing the capacity limit of the indoor unit 22a while maintaining at least the current temperature by the heat source indoor unit 32a. it can. Further, when the temperature difference ΔT is larger than a certain temperature, it is possible to perform demand control such as increasing the limit of the capacity of the indoor unit for heat source 32a without limiting the capacity of the indoor unit 22a as much as possible. For this reason, according to the air conditioning system 100, energy saving can be achieved without impairing comfort.

The control content setting unit 110 performs setting processing related to the operation content at the input unit 10A. The control content setting means 110 has a schedule management function for managing data related to demand control, for example, every hour, every day, and every day of the week. That is, the control content setting unit 110 has a function of registering the setting contents of the priority order and the power target value in association with at least one of each hour, each day, and each day of the week. The control content setting means 110 has a function of changing at least one of the priority order setting content and the power target value setting content according to at least one of every hour, every day, and every day of the week. is doing. Therefore, the administrator or the like can set the priority order of each device to be managed by the control content setting means 110 according to the sunshine hours, working hours, working days, etc. of the air conditioning target space. Then, the content of demand control can be adjusted according to the priority order of each device set by the control content setting means 110. However, the control content setting unit 110 may have a function of changing various information related to demand control in association with at least one of time, date, and day of the week.

The control content processing means 111 has a processing content procedure for realizing each function in advance as a program. That is, the control content processing unit 111 implements each function by executing a program. The control content processing unit 111 uses the driving information processed by the driving information processing unit 105, the power amount information processed by the power amount information processing unit 109, and the information set by the control content setting unit 110, as driving information. The control which changes is performed. The control content processing unit 111 stores the current control content in the control content storage unit 112.

For example, the control content processing unit 111 uses the operation information for each device to be managed and the data for the past several minutes of the power consumption of each device to be managed for each device when the same operation state continues. The power consumption after a certain period is predicted. Here, the past several minutes corresponds to a demand time limit, and is set to, for example, 30 minutes. Further, the certain period is set to one day, for example. Then, when the total predicted power value, which is the sum of the predicted power consumption values for each managed device, is likely to exceed the power amount target value set by the control content setting unit 110, the control content processing unit 111 Then, according to the content of the demand control set by the control content setting means 110, the demand control is performed on each device.

Actually, the driving information changing unit 113 performs a process of changing the driving information based on the determination result in the control content processing unit 111 and stores the changed driving information in the change storage unit 114. And the management apparatus 10 transmits the content changed in the driving information change means 113 to the transmission line 200 via the communication means 101, and changes the driving | running state of each apparatus of management object.

Here, the management apparatus 10 can also be realized by hardware such as a circuit device that realizes each of the functions described above, for example, a calculation device such as a microcomputer such as a DSP (Digital Signal Processor) or a CPU (Central Processing Unit). It can also be realized as software executed above. The operation information storage means 103, the electric energy information storage means 107, the control content storage means 112, and the change storage means 114 are configured by a PROM (Programmable Read Only Memory) such as a flash memory or a HDD (Hard Disk Drive). be able to. However, the operation information storage unit 103, the power amount information storage unit 107, the control content storage unit 112, and the change storage unit 114 may be configured by one storage unit.

FIG. 3 is a flowchart showing an operation of demand control by the management apparatus 10 of FIG. The air conditioning system 100 configured as described above realizes demand control in cooperation with each device by the management device 10 collecting operation information and power amount information of each device. Here, with reference to FIG. 3, a processing procedure of demand control performed by the management apparatus 10 will be described.

First, an outline of demand control by the management apparatus 10 will be described. After the power is turned on, the management apparatus 10 receives an operation from an administrator or the like and performs an initial setting process (step S101). Then, after the initial setting is completed, the management apparatus 10 executes the following processing.

The management apparatus 10 performs an operation information acquisition process for acquiring and storing the operation information of each device to be managed (step S102). Further, the management device 10 performs power amount information acquisition processing for acquiring and storing the power amount information of each device to be managed from the pulse input devices 50a and 50b (step S103).

Next, the management apparatus 10 predicts the power consumption amount of each device to be managed from the operation information acquired in step S102 and the power amount information acquired in step S103, and obtains a prediction result as a predicted value ( Step S104). And the management apparatus 10 calculates | requires the total prediction electric power value which is the prediction value of the power consumption amount in each whole apparatus from the sum total of the prediction value calculated | required by step S104 (step S105).

Next, when the total predicted power value obtained in step S105 is smaller than the power target value set in step S101 (No in step S106), the management apparatus 10 maintains the current state and returns to step S102. On the other hand, when the total predicted power value is equal to or higher than the power target value (step S106 / Yes), the management apparatus 10 performs demand control on each device according to the priority set in step S101 (step S107). Then, the management apparatus 10 repeatedly performs a series of operations in steps S102 to S107.

Subsequently, the demand control by the management apparatus 10 will be specifically described for each step shown in FIG. First, details of the procedure of the initial setting process (step S101) will be described. In the initial setting process, the control content setting unit 110 receives a setting operation related to demand control, and registers the received setting content. In other words, the control content setting unit 110 registers the devices to be managed, registers the pulse input devices 50a and 50b, and the amount of power acquired from the input ports of the pulse input devices 50a and 50b. The allocation information indicating whether or not is registered. In addition, the control content setting means 110 performs registration of a power target value that determines the timing for performing demand control, registration of priority between devices that perform demand control, and registration of demand control content. The power target value may be set and registered at regular intervals such as one hour, one day, one week, or one month. Furthermore, the control content setting unit 110 performs registration of date and time settings in the schedule management function.

When the control content setting means 110 performs the above setting registration, the management apparatus 10 monitors the state of each device adjacent to the management target and automatically performs demand control. The date and time setting in the schedule management function is not necessarily performed in the initial setting process. For this reason, when the date / time setting or the like in the schedule management function is not performed, the management apparatus 10 continues the demand control operation without changing the contents set in the initial setting process.

Next, the details of the procedure of the operation information acquisition process (step S102) will be described. In step S101, each device that is a management target of the management device 10 transmits data indicating that the operation state has changed to the management device 10 when an operation such as start / stop or set temperature is performed. To do. The management device 10 acquires the driving information from the data received from each managed device by the driving information collecting unit 102 and stores the acquired driving information in the driving information storage unit 103.

Next, details of the processing procedure of the electric energy information acquisition processing (step S103) will be described. The power amount information collecting unit 106 periodically monitors the power amount for the pulse input devices 50a and 50b that are the management targets of the management device 10 in step S101. That is, the power amount information collecting unit 106 requests the pulse input devices 50a and 50b to output the power amount, for example, every minute. Then, the electric energy information collecting unit 106 collects response data regarding the electric energy from the pulse input devices 50a and 50b as electric energy information. Next, the power amount information processing unit 109 allocates the power amount information collected by the power amount information collecting unit 106 to each device to be managed in accordance with the allocation information set and registered in step S101, and uses it as the power amount information of each device. It is stored in the electric energy information storage means 107.

Next, the details of the processing procedure of the power consumption prediction process (step S104) of each managed device will be described. Based on the operation information acquired in step S102 and the power amount information of each device acquired in step S103, the control content processing unit 111 detects the change in the accumulated power amount over the past several minutes such as 30 minutes. The power consumption for each device to be managed is predicted. That is, the control content processing unit 111 determines how much power will be consumed by each managed device over a certain period in the future when the current operating state continues from the change in the accumulated amount of power over the past several minutes. As a predicted value. The certain period is set to one day, for example. Then, the predicted value of the power consumption amount of each managed device is stored in the control content storage unit 112.

Next, the details of the processing procedure of the power consumption prediction process (step S105) for each managed device as a whole will be described. The control content processing means 111 totals the predicted power consumption values for each device acquired in step S104, and predicts how much of the entire device will be consumed in a certain period in the future. That is, the control content processing unit 111 adds up the predicted power consumption values for each managed device to obtain a total predicted power value that is a predicted power consumption value for each device as a whole. Then, the control content processing unit 111 stores the obtained total predicted power value in the control content storage unit 112.

Next, the details of the comparison process (step S106) between the total predicted power value and the set power target value and the demand control (step S107) for each device will be described. The control content processing unit 111 compares the total predicted power value obtained in step S105 with the power amount target value set in step S101 (step S106).

Here, the control content processing means 111 can perform the comparison process in step S106 in combination with at least two of hourly prediction, daily prediction, and monthly prediction. That is, in the case of hourly prediction, the control content processing unit 111 performs a comparison process between the total predicted power value currently predicted and the power target value set in association with one hour. In addition, in the case of prediction in units of one day, the control content processing unit 111 adds the integrated value of the power amount from 0:00 to the present and the predicted value of the power consumption from the present to the next 0:00. Thus, the total predicted power value for each day is obtained. Then, the control content processing unit 111 performs a comparison process between the calculated total predicted power value for each day and the power target value set in association with the day. Further, in the case of prediction in units of one month, the control content processing unit 111 sets the settlement date in advance, the integrated value of the electric energy from the day after the settlement date to the present, and the power consumption from the present to the settlement date. The total predicted power value in units of one month is obtained by adding the predicted value of the quantity. Then, the control content processing unit 111 performs a comparison process between the obtained total predicted power value in units of one month and a power target value set in association with one month.

When the total predicted power value is less than the power target value (step S106 / No), the control content processing unit 111 returns to step S102 without performing demand control. On the other hand, if the total predicted power value is greater than or equal to the power target value in the above comparison processing (Step S106 / Yes), the control content processing unit 111 performs demand control on each device according to the content set in Step S101. (Step S107). Then, the management apparatus 10 repeatedly performs a series of operations in steps S102 to S107, and when the total predicted power value becomes smaller than the power target value (step S106 / No), cancels demand control, and proceeds to step S102. Return. That is, the management apparatus 10 repeatedly performs a series of operations in steps S102 to S107.

In addition, although each process of the demand control by the management apparatus 10 was demonstrated in order of the code | symbol shown in FIG. 3, it is not limited to this. For example, the driving information acquisition process (step S102) and the power amount information acquisition process (step S103) may be performed in parallel or in a reversed order.

As described above, in the air conditioning system 100 according to the present embodiment, the management device 10 includes the first air conditioning device 20 and the second air conditioning device 30 within a certain period based on the operation information and the electric energy information. The total power consumption is controlled so as not to exceed the power target value. Therefore, since the air conditioning system 100 does not need to distribute the total amount of power allowed to the first air conditioner and the second air conditioner, the compression-expansion type first air conditioner and the central type first air conditioner Demand control can be realized in cooperation with two air conditioners. In other words, the air conditioning system 100 is configured to manage each device to be managed in a property such as a large-scale building in which the compression-expansion first air conditioner 20 and the central second air conditioner 30 are provided. Demand control that links them together can be realized.

Moreover, the management apparatus 10 has a function which receives and sets the priority setting operation regarding the demand control of the 1st air conditioning apparatus 20 and the 2nd air conditioning apparatus 30, and the setting operation of electric power target value. Yes. In other words, the management apparatus 10 can accept a priority setting operation and a power target value setting operation by the input unit 10A. In addition, the management apparatus 10 can perform setting registration regarding the operation content at the input unit 10 </ b> A by the control content setting unit 110. Therefore, the air conditioning system 100 can perform demand control according to the priority order in light of the set power target value for the total predicted power value. In addition, the air conditioning system 100 can set the priority order of each device in association with information on the presence or absence of a person for each air-conditioning target space. For this reason, the air conditioning system 100 can adjust the balance that limits the air-conditioning capability such that the place where the person is present is not subjected to demand control and only the place where there is no person is centrally demand-controlled. . Therefore, according to the air conditioning system 100, energy saving can be achieved without losing comfort.

Furthermore, the management device 10 has a function of changing the priority set and registered by the schedule management function according to at least one of hourly, daily and day of week. That is, the management apparatus 10 can adjust the content of demand control according to the priority order of each device set according to the sunshine hours, working hours, working days, etc. of the air conditioning target space. For this reason, according to the air conditioning system 100, energy saving can be promoted while maintaining comfort.

Here, when the air conditioning system 100 is used for a property such as a large-scale building, for example, the compression-expansion type first air conditioner 20 is used for air conditioning of an individual room or the like, and an entrance or a common space or the like A central second air conditioner 30 is used for air conditioning in a salon or the like. In such a case, the air conditioning system 100 performs demand control on the first air conditioner 20 corresponding to an individual room or the like, and does not perform demand control on the second air conditioner 30 corresponding to a shared space or the like. Thus, the target area for demand control can be adjusted.

In addition, the air conditioning system 100 can set a demand level for each target area for demand control. For example, the air conditioning system 100 can perform the demand control of the second air conditioning apparatus 30 according to the set demand level when the demand over occurs only by the demand control of the first air conditioning apparatus 20.

Furthermore, the management device 10 may execute the schedule management function in combination with the setting function of the target area for demand control. Specifically, for example, the air conditioning system 100 preferentially performs demand control on the first air conditioning apparatus 20 corresponding to an individual room or the like on a weekday when people gather in a common space or the like, and a specific room. On holidays where only people are present, demand control may be preferentially performed on the second air conditioner 30 corresponding to a shared space or the like. That is, the air conditioning system 100 may adjust the target area for demand control according to the calendar information.

Further, the management device 10 may determine whether to perform demand control for each air-conditioning target space such as an individual room. In addition, the management device 10 recognizes an air-conditioning target space such as a shared space by dividing it into a plurality of areas, sets individual demand levels for each area, and performs demand control for each area according to the set demand level. You may make it perform. That is, the air conditioning system 100 designates an area or the like for which demand control is to be performed by a single management device 10, and demand control based on the total electric energy of the first air conditioning device 20 and the second air conditioning device 30. It can be performed.

The embodiment described above is a preferred specific example in the air conditioning system, and the technical scope of the present invention is not limited to these embodiments. For example, the content of demand control may be set in the management device 10 in a plurality of stages instead of only one stage. And the management apparatus 10 is good to enable it to set the electric power target value according to each step. For example, the management apparatus 10 has four levels of power target values A to D (A <B <C <D) depending on the amount of electric power, and four levels of demand control P to S (based on the limit of the air conditioning capacity). Assume that P <Q <R <S) is set and registered. In this case, the management apparatus 10 may select and execute the demand controls P to S according to the magnitude relationship between the total predicted power value and the power target values A to D. That is, the management apparatus 10 executes demand control P if A ≦ total predicted power value <B, executes demand control Q if B ≦ total predicted power value <C, and C ≦ total predicted power value < If D, demand control R may be implemented, and if D ≦ total predicted power value, demand control S may be implemented. If it does in this way, flexible demand control in consideration of a user's comfort can be performed. In addition, since demand control with less limitation of air conditioning capability can be performed at a relatively early stage, it is possible to reduce the risk of occurrence of demand over and to save energy.

FIG. 1 illustrates the case where the air conditioning system 100 includes two pulse input devices, but is not limited thereto. For example, the air conditioning system 100 may include one pulse input device that functions in the same manner as the pulse input device 50a and the pulse input device 50b. One pulse input device may have at least four input ports, and may be configured to capture pulse signals output from the watt-hour meters 40a to 40d.

FIG. 1 illustrates the case where the air conditioning system 100 includes one outdoor unit and two indoor units, but is not limited thereto. That is, the air conditioning system 100 may have two or more outdoor units. In addition, the air conditioning system 100 may have one or three or more indoor units.

FIG. 1 illustrates the case where the air-conditioning system 100 has one heat source unit and two heat source indoor units, but is not limited thereto. That is, the air conditioning system 100 may have two or more heat source units. In addition, the air conditioning system 100 may include one or three or more heat source indoor units.

Further, the management apparatus 10 may include a communication unit that receives a remote operation by communication such as XML (Extensible Markup Language), for example. The communication unit may receive a demand control change command from the outside and perform a demand control change process in conjunction with another internal configuration of the management apparatus 10. In this way, for example, when there is a shortage of power or when a disaster occurs, the administrator etc. can change the content of demand control from the outside via the communication unit of the management device 10 even if he / she is not at the site. can do.

In the present embodiment, the case where the second air conditioner 30 circulates water has been exemplified. However, the present invention is not limited thereto, and the second air conditioner 30 may be configured to circulate brine or the like as a heat medium. Good. Moreover, in this Embodiment, although the air-conditioning system 100 provided with the compression-expansion-type air conditioning apparatus and the central-type air conditioning apparatus using a heat source machine was demonstrated, it is not limited to this. . For example, the air conditioning system 100 may include a compression / expansion air conditioning apparatus and an air conditioning apparatus using a refrigerator, a boiler, or the like.

10 management device, 10A input unit, 20 first air conditioner, 21 outdoor unit, 22a, 22b indoor unit, 30 second air conditioner, 31 heat source unit, 32a, 32b heat source indoor unit, 40a-40d watt hour meter , 50a, 50b, pulse input device, 100 air conditioning system, 101 communication means, 102 operation information collection means, 103 operation information storage means, 104 operation information setting means, 105 operation information setting means, 106 electric energy information collection means, 107 electric power Amount information storage means, 108 power amount information setting means, 109 power amount information processing means, 110 control content setting means, 111 control content processing means, 112 control content storage means, 113 operation information change means, 114 change storage means, 200 transmission Line, 210 power supply line for outdoor unit, 220 power supply for indoor unit Line 230 heat source machine power line, the power line for 240 heat the indoor unit, 250a ~ 250d pulse signal lines, 300a ~ 300d supply.

Claims

A first air conditioner in which the indoor unit and the outdoor unit are connected by a refrigerant pipe to circulate the refrigerant;
A second air conditioner in which the heat source unit and the heat source indoor unit are connected by a heat medium pipe to circulate the heat medium;
A management device that collects and manages operation information indicating an operation state of the first air conditioner and the second air conditioner and power amount information indicating a power consumption amount, and
The management device
Based on the operation information and the power amount information, the first air so that the total power consumption of the first air conditioner and the second air conditioner within a certain period does not exceed a power target value. An air conditioning system for performing demand control for limiting an air conditioning capability of the air conditioning device and the second air conditioning device.
The management device
2. The air conditioning system according to claim 1, further comprising: an input unit that receives a priority setting operation regarding the demand control of the first air conditioner and the second air conditioner and a setting operation of the power target value. .
The management device
A function of registering the setting contents of the priority order and the power target value in association with at least one of every hour, every day, and each day of the week, and the setting contents of the priority order and the setting contents of the power target value The air conditioning system according to claim 2, wherein at least one of them is changed according to at least one of every hour, every day, and every day of the week.
An watt-hour meter that is connected to each device of the outdoor unit, the indoor unit, the heat source unit, and the indoor unit for heat source and transmits a pulse signal indicating the amount of power;
A pulse input device that integrates pulse signals from the watt-hour meter to calculate the power consumption of each of the devices, and
The management device
When the predicted power consumption value of each device is determined from the power consumption calculated in the pulse input device, and the total predicted power value obtained by adding the calculated predicted values is equal to or less than the power target value, the demand The air conditioning system according to any one of claims 1 to 3, wherein the control is executed.