JP2015169367A - Air conditioning system and control method of air conditioning system - Google Patents

Abstract

The present invention provides an air conditioning heat source facility that reduces the power consumption corresponding to demand control by adjusting the output of the air conditioning heat source unit without the need to modify the air conditioning heat source unit.
An air conditioning system according to the present invention performs heat exchange between an air conditioner that adjusts a room temperature by heat exchange between air and a heat medium, and a heat medium that is sent from the air conditioner. An air conditioning heat source unit that performs output control so that a certain outlet temperature becomes a set temperature, a primary pump that pumps a heat medium sent from the air conditioner to the air conditioning heat source unit, and a heat medium that the air conditioning heat source unit sends An outlet temperature sensor that measures the outlet temperature, a secondary pump that pumps the heat medium sent from the air conditioning heat source unit to the air conditioner, and an outlet when changing the power consumption to the target power consumption that is the specified control target And a control server that rewrites and changes the set temperature stored in the air-conditioning heat source device to a control set temperature at which the difference temperature between the temperature and the set temperature becomes a control difference temperature corresponding to the target power consumption of the control target.
[Selection] Figure 1

Description

  The present invention relates to an air conditioning system and an air conditioning system control method (control method for adjusting power consumption) suitable for use in a smart grid system.

As one of the power supply and demand adjustment methods for buildings corresponding to the smart grid, the power consumption of the building is monitored to monitor the power consumption every moment, and the capacity of equipment is controlled so that the power purchase amount of the entire building is the target value (real time DR (demand response)) has been proposed (for example, Patent Document 1 and Patent Document 2). Among the target equipment for capacity control, the air-conditioning heat source machine (heat pump: compressor) such as a refrigerator has a relatively high adjustment capability and is excellent as the target equipment, and the air-conditioning heat source machine such as a refrigerator. More efficient control is being studied.
In addition, since the air conditioning heat source unit consumes a large amount of power, a relatively large reduction in power consumption can be expected by controlling the output of the air conditioning heat source unit.

JP 2011-239528 A JP2012-080679A

However, in a general air conditioning system, an interface for directly changing the output of the air conditioning heat source unit is not provided, and the air conditioning heat source unit changes the output by automatic control according to the required heat treatment amount at that time. Therefore, it is difficult to reduce expected power consumption.
Moreover, in order to be able to perform output control by the external command for the already provided air conditioning heat source machine, modification is required.

For this reason, in order to reduce power consumption, generally control such as stopping the air conditioner, switching to air blowing, changing the set temperature of the air conditioner (for example, increasing the set temperature during cooling), etc. I do.
However, when the set temperature of the air conditioner itself is raised, it is generally not known how many times the set temperature of the air conditioner can be raised to reduce the necessary power consumption. For this reason, the temperature setting of the air conditioner cannot be optimally performed, and a sufficient reduction in power consumption may not be realized, or the room temperature may rise more than necessary, resulting in an unpleasant environment. The same applies when the air conditioner is stopped or switched to air blowing. Furthermore, when the set temperature of the air conditioner is raised, the temperature is usually measured only at a specific location. Therefore, when temperature unevenness occurs in the room, appropriate control is difficult. In other words, even if most of the indoor temperature has not risen to the set temperature, the air conditioner starts operating again, so that sufficient power consumption cannot be reduced, or the indoor temperature rises and becomes uncomfortable. The air conditioner may remain unnecessarily stopped despite the increased environment.

  In view of the above-described problems, the present invention is an air conditioning system and an air conditioning system that can reduce the power consumption corresponding to demand control by adjusting the output of the air conditioning heat source unit without the need to modify the air conditioning heat source unit. It is an object to provide a control method (a control method for adjusting power consumption).

  In order to solve the above-described problems, an air conditioning system of the present invention performs heat exchange between an air conditioner that adjusts a room temperature by heat exchange between air and a heat medium, and the heat medium that is sent from the air conditioner. The air conditioning heat source device that performs output control so that the outlet temperature that is the temperature of the heat medium to be sent becomes a preset temperature, and the heat medium that is sent from the air conditioner is pumped to the air conditioning heat source device. A primary pump, an outlet temperature sensor for measuring the outlet temperature of the heat medium sent from the air conditioning heat source device, and a secondary for pressure-feeding the heat medium sent from the air conditioning heat source device to the air conditioner When the pump and the power consumption are changed to the target power consumption that is the designated control target, the difference temperature between the outlet temperature and the set temperature becomes a control differential temperature corresponding to the target power consumption of the control target. Preset temperature Characterized by comprising a control server to change rewrites the set temperature stored in the air-conditioning heat source equipment.

  In the air conditioning system of the present invention, the control server has a relation table or a relational expression indicating a correspondence relation between the differential temperature and the power consumption in the air conditioning heat source unit, and the relation table or the relational expression is used. The control differential temperature corresponding to the target power consumption is obtained, and the control set temperature is obtained by subtracting the control differential temperature from the outlet temperature.

  The method for controlling an air conditioning system according to the present invention includes: an air conditioner that adjusts an indoor temperature by heat exchange between air and a heat medium; heat exchange of the heat medium sent from the air conditioner; An air conditioning heat source device that performs output control so that an outlet temperature that is a temperature becomes a preset temperature, a primary pump that pumps the heat medium sent from the air conditioner to the air conditioning heat source device, and the air conditioning An outlet temperature sensor for measuring the outlet temperature of the heat medium sent from the heat source device, a secondary pump for pressure-feeding the heat medium sent from the air conditioning heat source device to the air conditioner, and a control server A control method for controlling an air conditioning system, wherein when the control server changes the power consumption to a target power consumption that is a designated control target, a difference temperature between the outlet temperature and the set temperature is a control target. To control the set temperature to be a control difference temperature corresponding to the target power consumption, characterized in that it comprises modifying rewrites the set temperature stored in the air-conditioning heat source equipment.

  According to the present invention, the air conditioning heat source unit is controlled by changing the set temperature set in the air conditioning heat source unit that controls the outlet temperature of the heat medium output from the air conditioning heat source unit without modifying the air conditioning heat source unit itself. Can be easily reduced to a desired target power consumption.

1 shows a configuration example of an air conditioning system according to an embodiment of the present invention. It is a figure of the heat source output table which shows the correspondence of the temperature change amount of a heat medium, and the heat source output of the air-conditioning heat-source equipment 111 for obtaining the temperature change of this temperature change amount. It is a figure of the power consumption table which shows the correspondence of the power consumption of the air-conditioning heat source unit 111, and the heat source output of the air-conditioning heat source unit 111. It is a schematic block diagram which shows an example of the smart grid system which can utilize the air-conditioning heat-source equipment apparatus which concerns on this invention.

<Embodiment>
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a configuration example of an air conditioning system according to an embodiment of the present invention. As shown in FIG. 1, the air conditioning system according to the embodiment of the present invention is responsible for the conveyance of the heat pump on the heat source side (for example, water: cooling water, etc.) and the conveyance of the heat medium on the air conditioning load side. A two-pump system including the secondary pump 125 is used.

The heat source side includes an air-conditioning heat source machine (for example, a refrigerator) 111, a primary side outgoing water pipe 112, a return header 117, a primary side return water pipe 118, a primary pump 121, a secondary pump 125, and an outgoing header. 113.
The air-conditioning load side includes air conditioners 115a, 115b,..., 115z, secondary-side outgoing pipelines 114a, 114b,..., 114z and secondary-side return water pipelines 116a, 116b,. 126b, ..., 126z. Each of the air conditioners 115a, 115b,..., 115z is provided with a heat exchanger (not shown). In addition, each of the air conditioners 115a, 115b,..., 115z is provided with inverter fans 127a, 127b,.
The control server 131 controls each of the air conditioning heat source unit 111, the primary pump 121, the secondary pump 125, the flow rate adjusting valves 126a, 126b,..., 126z and the inverter fans 127a, 127b,. Each of the primary pump 121 and the secondary pump 125 is set to the same amount when the heat medium flow rate to be pumped is normal.

The air-conditioning heat source unit 111 is connected to the forward header 113 via the primary side outgoing water pipe 112. The forward header 113 is composed of a first header 123 connected to the primary side outgoing water pipeline 112 and a second header 124 connected to the secondary side outgoing water pipelines 114a, 114b,. Between the 1st header 123 and the 2nd header 124, the secondary pump 125 for pumping a heat medium to air conditioner 115a, 115b, ..., 115z is provided. The second header 124 is connected to each of the air conditioners 115a, 115b,..., 115z provided on the indoor side via each of the secondary side outgoing pipes 114a, 114b,.
The secondary pump 125 controls the flow rate of the heat medium flowing from the first header 123 to the second header 124. In addition, the secondary pump 125 operates at a constant rotational speed according to a control value supplied in advance from the control server 131.

The air conditioners 115a, 115b,..., 115z are connected to the return header 117 via secondary side return water pipelines 116a, 116b,. The return header 117 is connected to the air conditioning heat source unit 111 via the primary side return water pipe 118.
The primary-side return water pipe 118 is provided between the return header 117 and the inlet of the air conditioning heat source device 111.

  The primary pump 121 is provided in the primary side return water pipe 118 and controls the flow rate of the heat medium flowing from the return header 117 to the inlet of the air conditioning heat source unit 111. The primary pump 121 operates at a constant rotational speed according to a control value supplied in advance from the control server 131. The primary pump 121 operates in conjunction with the air conditioning heat source unit 111.

The primary side outgoing water pipe 112 is provided between the outlet of the air conditioning heat source device 111 and the first header 123. The primary side outgoing water pipe 112 is a path through which the heat medium flows from the air conditioning heat source device 111 to the first header 123.
In addition, an outlet temperature sensor (thermometer) 122 is provided in the vicinity of the outlet of the air conditioning heat source unit 111 in the primary side outgoing water pipe 112.

  The outlet temperature sensor 122 is a water temperature sensor that measures the temperature of the heat medium that is cooled and sent out by the air conditioning heat source device 111. That is, the outlet temperature sensor 122 measures the outlet temperature Tm, which is the temperature of the heat medium that the air conditioning heat source device 111 outputs to the primary side outgoing water pipe 112.

Each of the flow rate adjusting valves 126a, 126b,..., 126z is provided in each of the secondary side outgoing water pipes 114a, 114b,. Each of the flow rate adjusting valves 126a, 126b,..., 126z controls the flow rate of the heat medium flowing through each of the secondary side outgoing pipelines 114a, 114b,.
A bypass conduit 130 is provided between the first header 123 and the return header 117 of the forward header 113 so that both can communicate with each other so that a heat medium as a fluid can flow therethrough.

In the air conditioning system of the present embodiment, the heat medium generated by the air conditioning heat source device 111 is sent to the air conditioners 115a, 115b,. Further, the flow rate of the heat medium sent to the air conditioners 115a, 115b,..., 115z is controlled by the flow rate adjusting valves 126a, 126b,.
Then, after heat exchange is performed by the air conditioners 115a, 115b,..., 115z, the heat medium is sent again to the air conditioner heat source unit 111 via the return header 117. Each of the flow rate adjusting valves 126a, 126b,..., 126z is controlled by the air conditioners 115a, 115b,..., 115z in accordance with the room temperature measured by a room temperature sensor (not shown).

For example, in the air conditioner 115a, when the room temperature is higher than the set temperature, the air conditioner 115a adjusts the opening of the flow rate adjustment valve 126a to increase the flow rate of the heat medium supplied to the heat exchanger of the air conditioner 115a. I do. Similarly, when the room temperature is higher than the set temperature of the air conditioner 115a, the air conditioner 115a controls the rotation speed of the inverter fan 127a to increase the supply amount of air exchanged with the heat medium in the heat exchanger. Do.
Similarly, each of the other air conditioners 115b, ..., 115z controls the flow rate adjusting valves 126b, ..., 126z and the inverter fans 126b, ..., 126z according to the set temperature and room temperature.

  The air conditioning heat source device 111 cools the heat medium supplied by the primary pump 121 so that the outlet temperature Tm measured by the outlet temperature sensor 122 becomes a preset temperature (Tth). And the air-conditioning heat-source device 111 outputs the heat medium which temperature fell by cooling from a delivery port. The set temperature is set in advance by the control server 131 for the air-conditioning heat source unit 111 in correspondence with the environment such as the season.

The rotational speed of the secondary pump 125 decreases, and the flow rate of the heat medium output from the first header 123 to the second header 124 is compared with the flow rate of the heat medium supplied from the air conditioning heat source device 111 to the first header 123. When the number is small, the path through which the heat medium flows is as follows.
The heat medium (outgoing water: supplied cooling water) that has not been sent from the first header 123 to the second header 124 is circulated from the first header 123 to the return header 117 via the bypass conduit 130. .

  That is, the surplus heat medium supplied in the first header 123 is directly returned to the return header 117 via the bypass pipe 130, where the return water (reflux) from the air conditioners 115a, 115b,. Heat medium). After joining, the air-conditioning heat source units 111a, 111b, and 111c are transported by the forward header 113 by the primary pumps 121a, 121b, and 121c, respectively. Due to the merging, the temperatures of the heat medium from the bypass line 130 and the heat medium from the air conditioners 115a, 115b,..., 115z are averaged and lowered. Since the heat medium from the bypass line 130 is not heat-exchanged, it remains at the temperature sent from the air conditioning heat source unit 111. For this reason, the heat medium from the bypass pipe line 130 reduces the temperature of the heat medium from the bypass pipe line 130 by the merge.

As described above, the control server 131 controls the air conditioning heat source unit 111, the air conditioners 115a,..., 115z, the secondary pump 125, the flow rate adjusting valves 126a,.
When receiving a control command to reduce power consumption, the control server 131 sets the power consumption of the air-conditioning heat source unit 111 as the target power consumption for a predetermined time. Since the power consumption of the air conditioning heat source device 111 is the largest in the air conditioning system, the effect of reducing the power consumption is also great. The control command includes required reduced power as a value of power to be reduced. Further, the control command may be input directly to the control server 131 or may be input via a connected network.

When receiving a control command for reducing the power consumption of the air conditioning system, the control server 131 extracts the required reduced power from the control command. The control server 131 subtracts the required reduced power from the current power consumption of the air conditioning heat source unit 111 to calculate the target power consumption of the air conditioning heat source unit 111.
The control server 131 controls the operation of the air conditioning heat source unit 111 so as to achieve this target power consumption (described later).

FIG. 2 is a diagram of a heat source output table showing the correspondence between the temperature change amount of the heat medium and the heat source output of the air conditioning heat source unit 111 for obtaining the temperature change of the temperature change amount. The heat source output indicates the ratio of the output necessary for changing the temperature of the heat medium with respect to the maximum output of the air conditioning heat source device 111. FIG. 2 shows the heat source output corresponding to the temperature change amount of the heat medium in the air conditioning heat source device 111. The amount of temperature change in the present embodiment is a difference temperature between the temperature of the heat medium sent from the air conditioning heat source device 111 and the set temperature set in the air conditioning heat source device 111. The temperature of the heat medium sent from the air conditioning heat source device 111 is the outlet temperature Tm measured by the outlet temperature sensor 122. Here, the output of the heat source machine is a numerical value obtained by the following equation.
Heat source machine output = α × ΔT
ΔT is a differential temperature obtained by subtracting the set temperature from the outlet temperature Tm.

The set temperature is a control target temperature of the heat medium sent from the air conditioning heat source unit 111 set in the air conditioning heat source unit 111. The set temperature is set by the control server 131 for the air conditioning heat source unit 111. The air conditioning heat source device 111 cools the heat medium so that the outlet temperature Tm of the heat medium becomes a set temperature. As described above, the heat source output is an output necessary for cooling the differential temperature obtained by subtracting the temperature B from the temperature A when the air conditioning heat source device 111 cools the heat medium from the temperature A to the temperature B.
Further, instead of the heat source output table shown in FIG. 2, a relational expression indicating a correspondence relationship between the temperature change amount of the heat medium and the heat source output of the air-conditioning heat source unit 111 for obtaining the temperature change of the temperature change amount may be used. good.

FIG. 3 is a power consumption table showing the correspondence between the power consumption of the air conditioning heat source unit 111 and the heat source output of the air conditioning heat source unit 111. The correspondence relationship between the power consumption and the heat source output in FIG. 3 is set for each predetermined environmental condition. For example, since the efficiency of the air-conditioning heat source device 111 differs for each environmental condition, it is set corresponding to the outside temperature, humidity, etc. for each season. From FIG. 3, the power consumption increases as the heat source output increases.
Therefore, when reducing the power consumption of the air-conditioning heat source apparatus 111, it turns out that it is necessary to make small the difference temperature of exit temperature Tm and preset temperature.

When the control server 131 receives a control command for reducing the power consumption of the air conditioning system, the control server 131 performs control to set the power consumption of the air conditioning heat source unit 111 as the target power consumption for a predetermined time.
In the present embodiment, the control server 131 performs a process of rewriting the set temperature of the air conditioning heat source device 111 in order to reduce the difference temperature.
The control server 131 has an internal storage unit (not shown) in which the heat source output table of FIG. 2 and the power consumption table of FIG. 3 are stored.
Further, instead of the power consumption table shown in FIG. 3, a relational expression indicating a correspondence relationship between the power consumption of the air conditioning heat source unit 111 and the heat source output of the air conditioning heat source unit 111 may be used.

  Returning to FIG. 1, the control server 131 reads the heat source output corresponding to the target power consumption with reference to the power consumption table of the internal storage unit. Moreover, the control server 131 reads the differential temperature corresponding to the heat source output read from the power consumption table of the internal storage unit from the heat source output table of the internal storage unit. Then, the control server 131 sets the differential temperature read from the power consumption table of the internal storage unit as the control differential temperature. The control server 131 reads the outlet temperature Tm measured by the outlet temperature sensor 122 from the outlet temperature sensor 122. Then, the control server 131 subtracts the control differential temperature from the read outlet temperature Tm and sets the subtraction result as the control set temperature.

The control server 131 rewrites the set temperature set in the air conditioning heat source device 111 to the control set temperature. Thereby, when cooling the temperature of the heat medium to the outlet temperature Tm to the set temperature (control set temperature), the power consumption consumed by the air-conditioning heat source unit 111 can be set as the target power consumption.
The control server 131 rewrites the set temperature of the air-conditioning heat source unit 111 to the above-described control set temperature only for a predetermined period in the demand time. The predetermined period is, for example, 10 minutes out of 30 minutes of demand time. After the predetermined period has elapsed, the control server 131 rewrites the set temperature of the air-conditioning heat source unit 111 again from the control set temperature to the temperature set before rewriting the control set temperature.

With the configuration described above, in the present embodiment, the control server 131 rewrites the set temperature, which is the control target for the outlet temperature Tm of the heat medium sent from the heat source air conditioner 111, to the control set temperature corresponding to the target power consumption.
Thereby, according to this embodiment, the temperature change amount of the heat medium in the air-conditioning heat source device 111, that is, the difference temperature can be reduced, and the control server 131 is not modified without modifying the control interface of the air-conditioning heat source device 111. Only by this control, the power consumption of the heat source air conditioner 111 can be easily reduced to the target power consumption. Thereby, according to this embodiment, the power consumption of the air conditioning system within a demand time can be arbitrarily controlled.

<Smart grid system>
FIG. 4 is a schematic block diagram showing an example of a smart grid system that can use the air conditioning heat source equipment according to the present invention. As shown in FIG. 4, this smart grid system includes an operation management device 1, an air conditioning heat source facility device 3, a work facility device 4, a power supply device 6, a power supply output control device 7, and a load power control device 8 (FIG. 1). Corresponding to the control server 131).

  This smart grid system includes, for example, an air conditioning heat source equipment 3 and a work equipment 4 as load devices. In addition, since the air-conditioning heat-source equipment 3 is provided with the heat source, the fluctuation of power consumption is large compared with the work-equipment equipment 4, and the power consumption tends to fluctuate according to the weather and indoor usage environment.

  The air conditioning heat source equipment 3 (corresponding to the air conditioning heat source equipment 101 in FIG. 1) includes an air conditioning heat source machine 31 (corresponding to the air conditioning heat source machine 111), an external air conditioner 32, and an air conditioner 33 (air conditioners 115a, 115b, ..., corresponding to the air conditioner 115z), the thermal circulation mechanism 34, and the package air conditioner 35. Among the air conditioning heat source equipment 3, the air conditioning heat source unit 31, the external air conditioner 32, and the air conditioner 33 adjust the temperature of the heat medium (for example, water) that circulates through the heat circulation mechanism 34, for example, This is equipment that adjusts the temperature in the room via an air conditioner 33 installed in the room. The air conditioning heat source equipment 3 uses the heat circulation mechanism 34 to provide the external air conditioner 32 and the air conditioner 33 with the amount of heat required by the load device.

  The heat circulation mechanism 34 is, for example, a pipe 341 (a primary side outlet pipe 112 in FIG. 1) that is stretched around each room and is filled with a heat medium (liquid or gas) that holds the amount of heat given by the air conditioning heat source unit 31. And the primary side return water pipe 118, the secondary side outgoing water pipes 114a, 114b,..., 114z and the secondary side return water pipes 116a, 116b,..., 116z, etc.), and a pump 342 for circulating the heat medium. (Including the primary pump 121 and the secondary pump 125 in FIG. 1) and a heat storage tank 343 for storing a heat medium that retains the amount of heat.

  The air conditioning heat source unit 31 includes, for example, an air conditioning heat source unit that is a heat pump, a gene link, and the like, and performs a heating process for increasing the temperature of the heat medium filled in the pipe 341 and a cooling process for decreasing the temperature of the heat medium.

  The outside air conditioner 32 takes in outside air and adjusts the outside air temperature to some extent according to the room temperature. The air conditioner 33 uses the temperature of the heat medium heat-treated or cooled by the air-conditioning heat source device 31 to adjust the outside air taken in by the external air conditioner 32 according to the room temperature. The package air conditioner 35 adjusts the outside air taken in by the external air conditioner 32 according to the room temperature without using the temperature of the heat medium heated and cooled by the air conditioning heat source device 31.

  The work equipment 4 includes a PC (Personal Computer) 41, a lighting device 42, and an OA (Office Automation) device 43. The PC 41, the lighting device 42, and the OA device 43 are work facility devices that are often installed in buildings such as offices, and are examples of the work facility device 4 according to the present invention.

  In addition, the smart grid system includes a first generator 61, a second generator 62, a storage battery 63, and a power purchase power supply 64 as power supply devices 6 that supply power to these load devices.

  The first generator 61 generates electric power by private power generation using wind energy, solar energy, or the like. Since the power generation energy of the first generator 61 depends on the weather, the output power is not constant. The second generator 62 is a generator such as a gas engine generator or a gas turbine generator. Since the second generator 62 does not use the power generation energy that depends on the weather, the output power can be adjusted. The storage battery 63 stores the generated power generated by the first generator 61 and the second generator 62 and the purchased power output from the purchased power source 64. The power purchase power supply 64 outputs, for example, the power purchased by the user from the power company (power purchase power).

  Regarding power purchase from this electric power company, the contract power C [kW] is determined according to the user, and the average power used for a predetermined time period (demand time limit) exceeds the contract power C. In such a case, an additional fee such as a penalty is imposed on the payment fee determined in advance according to the contract power C. Here, the contract power may be hereinafter referred to as a demand target value C. Hereinafter, the predetermined fixed time corresponds to a demand time period, and is a fixed time arbitrarily determined, for example, 30 minutes.

  The operation management apparatus 1 manages the air conditioning heat source operation plan and the power supply facility operation plan. This air conditioning heat source operation plan is a plan in which the thermal load required by the load device corresponding to the air conditioning heat source is allocated for each demand time period and this allocation is shown for each time. The air-conditioning heat source operation plan is, for example, a load device corresponding to an air-conditioning heat source predicted in each time zone of the day in order to supply an amount of heat expected to adjust the temperature to a preset temperature predetermined on the prediction date. Indicates the amount of heat dissipated and the amount of heat stored in the heat storage tank.

  The power supply facility operation plan is a plan showing allocation of power sources (generated power and purchased power) to be supplied to all load devices at each time. This power supply facility operation plan is based on the predicted power load expected to be fed from the power supply device 6 for each power output (first generator 61, second generator 62, and storage battery included in the power supply device 6). 63 and the schedule of operation for each purchased power source 64). For example, the power supply facility operation plan indicates the power required for the power supply device 6 to operate every predetermined time (demand time limit) in order to supply the supply power predicted in each time zone of the day.

  The operation management device 1 inputs in advance various information for optimal operation control of the air conditioning heat source equipment 3, work equipment 4, and power supply equipment 6, and based on the information, air conditioning heat load prediction processing and power generation output prediction. Process. In this air conditioning thermal load prediction process, a process of calculating the amount of heat (air conditioning thermal load) predicted to be necessary to adjust the temperature to a predetermined set temperature is performed. In the power generation output prediction process, a process of calculating power predicted to be generated by the first generator 61 is performed.

  The operation management device 1 performs an operation plan creation process based on the results of the air conditioning thermal load prediction process and the power generation output prediction process. The operation plan creation unit creates an air conditioning heat source operation plan according to the predicted air conditioning heat load based on these prediction results, and purchases from the purchased power supply 64 according to the predicted air conditioning heat load. A power source indicating the power load of each power source (first generator 61, second generator 62, storage battery 63, and purchased power source 64) of the power source device 6 at which the electric power becomes an arbitrary target value (for example, the minimum value). Create equipment operation plan.

  The basic process of the operation management apparatus 1 is to collect a variety of information and create an air conditioning heat load prediction process and a power generation output prediction process, and a process step 1 to create an air conditioning heat source operation plan and a power supply facility operation plan based on the results. This is two processing steps, that is, a process step 2 for performing an operation plan creation process. In addition to these two processing steps, the operation management device 1 performs a process for executing the plan DR and a process for executing the real-time DR depending on the case.

  The power output control device 7 supplies power from the power supply device 6 to the air conditioning heat source equipment device 3 and the work equipment device 4 that are load devices based on the operation plan, plan DR, and real-time DR processing by the operation management device 1. While specifying the source (the 1st generator 61, the 2nd generator 62, the storage battery 63, the power purchase power supply 64), the electric power which this electric power source outputs, and its timing are controlled. Specifically, the power output control device 7 controls the power output from the first generator 61, the second generator 62, and the storage battery 63 in the power source. The power output from the power purchase power supply 64 is the power output from the first generator 61, the second generator 62, and the storage battery 63 in response to the demand of the load device (the air conditioning heat source equipment 3 and the work equipment 4). Then there is insufficient power.

  The load power control device 8 controls the operation of the air conditioning heat source equipment 3 and the work equipment 4 based on the operation plan, plan DR, and real-time DR processing by the operation management device 1.

  The present invention is not limited to the above-described embodiments, and various modifications and applications can be made without departing from the gist of the present invention.

111 ... Air-conditioning heat source 112 ... Primary-side outgoing water pipes 114a, 114b, 114z ... Secondary-side outgoing water pipes 115a, 115b, 115z ... Air-conditioners 116a, 116b, 116z ... Secondary-side return water pipes 117 ... Return header 118 ... Primary side return water pipe 121 ... Primary pump 122 ... Outlet temperature sensor 123 ... First header 124 ... Second header 125 ... Secondary pumps 126a, 126b, 126z ... Flow rate adjusting valves 127a, 127b, 127z ... Inverter fan 130 ... Bypass pipe Path 131 ... Control server

Claims (3)

An air conditioner that adjusts the indoor temperature by heat exchange between air and a heat medium;
An air conditioning heat source machine that performs heat exchange of the heat medium sent from the air conditioner and performs output control so that an outlet temperature that is a temperature of the heat medium to be sent becomes a preset temperature,
A primary pump that pumps the heat medium delivered from the air conditioner to the air conditioner heat source;
An outlet temperature sensor for measuring the outlet temperature of the heat medium sent from the air conditioning heat source unit;
A secondary pump that pumps the heat medium sent from the air conditioning heat source to the air conditioner;
When changing the power consumption to a target power consumption that is a designated control target, a difference temperature between the outlet temperature and the set temperature is set to a control set temperature that becomes a control difference temperature corresponding to the target power consumption of the control target. A control server that rewrites and changes the set temperature stored in the air conditioning heat source unit. The control server
A relation table or a relational expression indicating a correspondence relation between the differential temperature and the power consumption in the air conditioning heat source unit;
2. The control differential temperature corresponding to the target power consumption is obtained using the relation table or relational expression, and the control set temperature is obtained by subtracting the control differential temperature from the outlet temperature. The air conditioning system described. An air conditioner that adjusts the indoor temperature by heat exchange between air and a heat medium;
An air-conditioning heat source that performs heat exchange of the heat medium sent from the air conditioner and performs output control so that an outlet temperature that is a temperature of the medium to be sent becomes a preset temperature;
A primary pump that pumps the heat medium delivered from the air conditioner to the air conditioner heat source;
An outlet temperature sensor for measuring the outlet temperature of the heat medium sent from the air conditioning heat source unit;
A secondary pump that pumps the heat medium sent from the air conditioning heat source to the air conditioner;
A control method for controlling an air conditioning system having a control server,
The control server is
When changing the power consumption to a target power consumption that is a designated control target, a difference temperature between the outlet temperature and the set temperature is set to a control set temperature that becomes a control difference temperature corresponding to the target power consumption of the control target. A method for controlling an air conditioning system, comprising: rewriting and changing the set temperature stored in the air conditioning heat source unit.

Images