TW201512607A - Operation control device and operation control method - Google Patents

Abstract

An operation control device (1) is provided with: a model updating unit (14) which, on the basis of collected environmental information, updates power consumption models prepared for respective types of devices to be controlled included in a system to be controlled (2); a power consumption system construction unit (15) which, according to the configuration of the system to be controlled (2), constructs a power consumption system from the power consumption models updated by the model updating unit (14); a control value calculation unit (16) which, using the power consumption system constructed by the power consumption system construction unit (15), calculates the control values of the devices to be controlled such that the power consumption to the finish time of the operation of the system to be controlled (2) becomes minimum; and a control value setting unit (17) which sets the control values calculated by the control value calculation unit (16) to the devices to be controlled.

Description

Operation control device and operation control method

The present invention relates to an operation control device and an operation control method.

There is a system for controlling the operation of a control target system such as an air conditioning system. For example, Patent Document 1 discloses a central air conditioning system that determines an optimal control value that minimizes energy consumption based on an energy consumption function, and controls operation of the air conditioning system using an optimal control value. In the air conditioning system, the energy consumption function is determined by determining the coefficient of the mode of the initial function shape as the energy consumption function using the measurement data at the time of operation.

Prior technical literature Patent literature

Patent Document 1: Japanese Patent Laid-Open No. 2006-207929

However, the energy consumption function used in the air conditioning system of Patent Document 1 is used to find a function of the energy consumption of the entire air conditioning system. Therefore, when the air conditioner system is changed by adding a new machine to the air conditioning system or removing the machine from the air conditioning system, it is necessary to change the initial function shape of the energy consumption function. The change of the initial function shape of the energy consumption function takes time and cost. As described above, in the air conditioning system of Patent Document 1, it is difficult to flexibly cope with the change in the configuration of the air conditioning system.

Moreover, in the air conditioning system of Patent Document 1, it is an air conditioner load at a certain point in time. A condition variable or the like is input to the energy consumption function, and a control value at which the energy consumption amount of the air conditioning system becomes the minimum is calculated. However, it is sometimes impossible to obtain an optimum control value that minimizes the energy consumption of the entire air conditioning system over time by the air conditioning load condition variable at a certain point in time.

An aspect of the present invention provides an operation control device and an operation control method that can flexibly cope with a change in the configuration of a control target system and can further reduce power consumption.

An operation control device according to an aspect of the present invention includes: a mode update unit that updates a power consumption mode prepared in accordance with a type of a control target device included in an air conditioning system, that is, a control target system, based on the collected environmental information; and a power consumption system The construction unit constructs a power consumption system from the power consumption mode updated by the mode update unit according to the configuration of the control target system, and the calculation unit uses the power consumption system constructed by the power consumption system construction unit to control The control value of the control target device is calculated so that the power consumption of the target system is minimized until the end of the operation, and the setting unit sets the control value calculated by the calculation unit to the control target device.

Another aspect of the operation control method of the present invention includes: a mode update step of updating a power consumption mode prepared according to the type of the control target machine included in the air conditioning system, that is, the control target system, based on the collected environmental information; The power system construction step is based on the configuration of the control target system, and the power consumption system is constructed from the power consumption mode updated in the mode update step; and the calculation step is used for the power consumption system constructed in the power consumption system construction step. The control value of the control target device is calculated so that the power consumption of the control target system is minimized until the end of the operation, and the setting step is set in the control target device.

According to the operation control device and the operation control method, the power consumption mode is prepared in accordance with the type of the control target device included in the control target system, and each power consumption mode is updated based on the environmental information. And, according to the composition of the control object system, the self-consumption power mode Building a power system. Therefore, even if the addition or removal of the control target device is performed, it is not necessary to reproduce the power consumption mode, and the power consumption system can be constructed using the power consumption mode of the control target device included in the changed control target system. Therefore, the reorganization of the power consumption system corresponding to the change in the configuration of the control target system can be facilitated. Further, in the operation control device and the operation control method, the power consumption system is used, and the control value of the control target device is calculated so that the power consumption of the control target system until the end of the operation is minimized, and the control value is set to the control. Object machine. Therefore, not only the power consumption at a certain point in time can be minimized, but also the total power consumption of the control target system up to the end of the operation can be minimized. As a result, a further reduction in power consumption can be achieved.

In another aspect of the operation control device of the present invention, the power consumption system may be a Lagrang system including a restriction mode indicating a mode of control in the control target system. In this case, the conditions specified by the restriction mode can be satisfied, and power consumption can be reduced.

In another aspect of the operation control device of the present invention, the restriction mode may include a heat change mode indicating a mode related to a change in heat of the air-conditioning target by the control target system. In this case, the conditions of the heat change specified by the heat change mode can be satisfied, and the power consumption can be reduced.

In still another aspect of the operation control device of the present invention, the restriction mode may include a machine performance mode indicating a mode related to the performance of the machine to be controlled. In this case, the conditions of the machine performance specified by the machine performance mode can be satisfied, and the power consumption can be reduced.

In the operation control device according to the aspect of the invention, the calculation unit may dynamically calculate the control value so that the power consumption from the operation start time to the operation end time of the control target system is minimized. In this case, the power consumption system is used to calculate the control value of the control target device so that the power consumption from the operation start time to the operation end time of the control target system is minimized, and the control value is set to the control target device. Therefore, no Only the power consumption at a certain point in time can be minimized, and the total power consumption of the entire operation period from the start of the operation of the control target system to the end of the operation can be minimized. As a result, a further reduction in power consumption can be achieved.

According to an aspect of the present invention, it is possible to flexibly cope with changes in the configuration of the control target system and further reduce power consumption.

1‧‧‧Operation control device

2‧‧‧Control object system

4‧‧‧Freezer

5‧‧‧ pump

6‧‧‧Air conditioner

7‧‧‧Pipe

10‧‧‧Operation Control System

11‧‧‧Environment Information Collection Department

12‧‧‧Environmental Information Memory Department

13‧‧‧Mode Memory

14‧‧‧Mode Update Department

15‧‧‧Power Consumption System Construction Department

16‧‧‧Control value calculation unit (calculation unit)

17‧‧‧Control value setting unit (setting unit)

20‧‧‧ room

41‧‧‧Compressor

42‧‧‧Condenser

43‧‧‧Expansion valve

44‧‧‧Evaporator

45‧‧‧Refrigerant piping

46‧‧‧Frozen water inlet

47‧‧‧Chilled water outlet

61‧‧‧Evaporator

62‧‧‧Inhalation

63‧‧‧Blowing out

101‧‧‧CPU

102‧‧‧RAM

103‧‧‧ROM

104‧‧‧Auxiliary memory device

105‧‧‧Communication device

106‧‧‧Input device

107‧‧‧Output device

Iwo _t ‧‧‧Chilled water outlet temperature (control value)

NW‧‧‧Network

V _t ‧‧‧Flow (control value)

Fig. 1 is a view schematically showing the configuration of an operation control system according to an embodiment.

Fig. 2 is a view schematically showing the configuration of the control target system of Fig. 1;

Fig. 3 is a view schematically showing the hardware configuration of the operation control device of Fig. 1;

Fig. 4 is a block diagram schematically showing the functional configuration of the operation control device of Fig. 1.

Fig. 5 is a flow chart showing an example of the operation of the operation control device of Fig. 1.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or corresponding elements are designated by the same reference numerals, and the repeated description is omitted.

Fig. 1 is a view schematically showing the configuration of an operation control system according to an embodiment. As shown in FIG. 1, the operation control system 10 includes a system in which the operation control device 1 and the control target system 2 are controlled to operate the control target system 2. The operation control device 1 and the control target system 2 are communicably connected via, for example, the network NW. The network NW can also be composed of either wired or wireless. The network NW is, for example, a network such as a wired LAN (Local Area Network) or a wireless LAN.

The control target system 2 includes a system of a device (hereinafter referred to as a "control target device") that performs operation control by the operation control device 1. The control target system 2 is, for example, an air conditioning system that adjusts the indoor temperature of the room 20 to be air-conditioned by using chilled water, and includes a refrigerator 4, a pump 5, an air conditioner 6, and a pipe 7.

FIG. 2 is a view schematically showing the configuration of the control target system 2. As shown in Figure 2, cold The refrigerator 4 is a device for cooling the chilled water circulating in the control target system 2. The refrigerator 4 cools the chilled water using, for example, a refrigerant. As the refrigerant, a substance which is likely to become high temperature and high pressure due to compression is used, and for example, a chlorofluorocarbon (such as R22 or R410) is used. The refrigerator 4 includes, for example, a compressor 41, a condenser 42, an expansion valve 43, an evaporator 44, a refrigerant line 45, a chilled water inlet 46, and a chilled water outlet 47.

The compressor 41 is a device that compresses a refrigerant at a normal temperature and a normal pressure to generate a refrigerant of high temperature and high pressure. The compressor 41 receives a control instruction for setting the temperature of the chilled water outlet from the operation control device 1, and controls the temperature and pressure of the refrigerant according to the amount of the refrigerant to be compressed according to the chilled water outlet temperature. The chilled water outlet temperature is the temperature of the chilled water at the chilled water outlet 47. The compressor 41 delivers the compressed refrigerant to the condenser 42. Further, the larger the amount of the compressed refrigerant, the higher the power consumption of the compressor 41.

The condenser 42 is a device that performs heat exchange between the high-temperature and high-pressure refrigerant generated by the compressor 41 and the outside air. The condenser 42 delivers the heat exchanged refrigerant to the expansion valve 43. The expansion valve 43 is a device that reduces the pressure and temperature of the refrigerant by expanding the refrigerant exchanged by the condenser 42 by heat exchange. The expansion valve 43 delivers the expanded refrigerant to the evaporator 44. The evaporator 44 is a device that performs heat exchange between the refrigerant expanded by the expansion valve 43 and the chilled water. The evaporator 44 delivers the heat exchanged refrigerant to the compressor 41.

The refrigerant line 45 is a tube through which the refrigerant passes. The refrigerant line 45 is disposed between the compressor 41 and the condenser 42, between the condenser 42 and the expansion valve 43, between the expansion valve 43 and the evaporator 44, and between the evaporator 44 and the compressor 41, so that the refrigerant is The cycle is circulated in the compressor 41, the condenser 42, the expansion valve 43, and the evaporator 44. The chilled water inlet 46 is an inlet of chilled water returned from the air conditioner 6, and supplies chilled water to the evaporator 44. The chilled water outlet 47 is the outlet of the chilled water cooled by the evaporator 44, and the cooled chilled water is sent to the air conditioner 6.

The refrigerator 4 having such a configuration receives, for example, a control instruction for setting the chilled water outlet temperature from the operation control device 1, and cools the temperature of the chilled water at the chilled water outlet 47 to the chilled water outlet temperature received from the operation control device 1. Specifically, compressed by the compressor 41 The refrigerant at normal temperature and normal pressure in an amount corresponding to the temperature of the chilled water outlet received from the operation control device 1 is a refrigerant of high temperature and high pressure. The high-temperature and high-pressure refrigerant exchanges heat with the outside air in the condenser 42, and heat of a part of the refrigerant is carried away by the outside air. Further, the refrigerant which has been heat-exchanged in the condenser 42 is expanded by the expansion valve 43, and becomes a refrigerant of low temperature and low pressure. Then, the low-temperature and low-pressure refrigerant exchanges heat with the chilled water supplied from the chilled water inlet 46 at the evaporator 44 to take away the heat of the chilled water. The chilled water after the heat is taken away is sent to the air conditioner 6 from the chilled water outlet 47. At this time, the temperature of the chilled water of the chilled water outlet 47 becomes the chilled water outlet temperature received from the operation control device 1. On the other hand, the refrigerant that has been heat-exchanged in the evaporator 44 is again compressed by the compressor compressor 41.

The pump 5 is a device for circulating chilled water. The pump 5 includes, for example, an electric motor and a frequency converter that powers the chilled water by extruding chilled water. The pump 5 receives a control value (for example, a current value) for setting the frequency of the inverter from the operation control device 1, and sets the frequency of the inverter based on the control value. The pump 5 controls the number of revolutions of the motor by changing the frequency of the inverter, and changes the flow rate of the chilled water (flow per unit time).

The air conditioner 6 is a device for cooling the air in the room of the room 20 using chilled water, and is, for example, a FCU (Fan Coil Unit). The air conditioner 6 is installed, for example, on the ceiling of the room 20. The air conditioner 6 includes, for example, an evaporator 61, a suction port 62, and a blower outlet 63.

The evaporator 61 is a heat exchanger that exchanges heat between the air in the room 20 sucked in through the suction port 62 and the chilled water sent from the refrigerator 4. The evaporator 61 has, for example, a pipe pipe through which chilled water flows. The suction port 62 is a portion of the air that is drawn into the room of the room 20. The air outlet 63 blows the air cooled by the evaporator 61 to a portion of the room of the room 20. The air conditioner 6 further has a fan.

In the air conditioner 6, by the rotation of the fan, the suction port 62 draws in the air in the room of the room 20. Further, the air taken in from the suction port 62 is cooled by heat exchange between the surface of the pipe tube of the evaporator 61 and the chilled water. Then, the cooled air is returned from the air outlet 63 to the room of the room 20. Furthermore, in this example, since the rotational speed of the fan is fixed, the suction port 62 The amount of suction and the amount of blowout of the air outlet 63 are fixed.

The pipe 7 is a pipe for circulating chilled water. The piping 7 is provided, for example, between the refrigerator 4 and the pump 5, between the pump 5 and the air conditioner 6, and between the air conditioner 6 and the refrigerator 4, and the chilled water is sequentially stored in the refrigerator 4, the pump 5, and the air conditioner. 6 loops. The chilled water is powered by the pump 5 and circulated in the pipe 7. After the chilled water is cooled in the refrigerator 4, heat exchange is performed between the air conditioner 6 and the air in the room of the room 20. Further, the chilled water that has been subjected to heat exchange is returned to the refrigerator 4 and cooled again.

The control target system 2 is provided with a sensor for obtaining various environmental information. The refrigerator 4 is provided with, for example, a sensor for obtaining the temperature of the outside air, a sensor for obtaining the temperature of the chilled water of the chilled water inlet 46, and a sensor for obtaining the temperature of the chilled water of the chilled water outlet 47. And a sensor for obtaining the input power of the refrigerator 4, and the like. The pump 5 is provided with, for example, a sensor for obtaining the flow rate of the circulated chilled water, a sensor for taking the input power of the pump 5, and the like.

The air conditioner 6 is provided with, for example, a sensor for obtaining the temperature and humidity of the air of the suction port 62, a sensor for obtaining the temperature and humidity of the air of the air outlet 63, and an input for obtaining the air conditioner 6. Power sensor, etc. Further, the air conditioner 6 may be provided with a sensor for obtaining the amount of air blown from the air outlet 63. In the room 20, a sensor for obtaining the temperature and humidity of the room, and a sensor for obtaining the temperature of the outside air outside the room are provided. Further, in the room 20, a sensor for obtaining the pressure in the room may be provided.

A timer for measuring time is provided in each of the refrigerator 4, the pump 5, the air conditioner 6, and the room 20. The environmental information acquired by each sensor is transmitted to the operation control device 1 via the network NW together with the time information indicating the time at which each environmental information is acquired.

Returning to Fig. 1, the operation control system 10 will be described. The operation control device 1 is a device that controls the device to be controlled of the control target system 2 based on the environmental information acquired from the control target system 2. The operation control device includes, for example, an information processing device such as a server device.

FIG. 3 is a view schematically showing a hardware configuration of the operation control device 1. As shown in FIG. 3, the operation control device 1 includes, for example, a CPU (Central Processing Unit) 101, a RAM (Random Access Memory) 102, and a ROM (Read Only Memory). The body 103, the auxiliary memory device 104, the communication device 105, the input device 106, and the output device 107 are hard bodies. The RAM 102 is a main memory device. The auxiliary memory device 104 is, for example, a hard disk. The communication device 105 is a data transceiver, such as a network card. The input device 106 is, for example, a mouse, a touchpad, a keyboard, or the like. The output device 107 is, for example, a display.

The operation control device 1 reads a specific computer program to a hardware such as the RAM 102, and operates the communication device 105, the input device 106, the output device 107, and the like based on the control of the CPU 101, and performs the operations in the RAM 102 and the auxiliary memory device 104. Reading and writing of data. Thereby, the operation control device 1 realizes each function of the operation control device 1 to be described later. The respective functions of the operation control device 1 will be described below.

FIG. 4 is a block diagram schematically showing the functional configuration of the operation control device 1. As shown in FIG. 4, the operation control device 1 includes an environmental information collecting unit 11, an environmental information storage unit 12, a mode storage unit 13, a mode update unit 14, a power consumption system construction unit 15, and a control value calculation unit 16 (calculation unit). And a control value setting unit 17 (setting unit).

The environmental information collecting unit 11 has a function of receiving environmental information acquired by various sensors provided in the control target system 2 and time information indicating the time at which each environmental information is acquired. The environmental information collecting unit 11 receives environmental information from various sensors, for example, at a period T1. The period T1 is, for example, about 1 second. The environmental information collecting unit 11 stores the environmental information in association with the time information indicating the time at which each environmental information is acquired, and stores it in the environmental information storage unit 12.

The environmental information storage unit 12 has a function of storing environmental information received by the environmental information collecting unit 11. The environmental information storage unit 12 stores the environmental information in association with the time information indicating the time at which each environmental information is acquired.

The environmental information about the refrigerator 4 includes, for example, the outside air temperature, the temperature of the chilled water of the chilled water inlet 46, the temperature of the chilled water of the chilled water outlet 47, and the input power of the refrigerator 4. As environmental information about the pump 5, for example, there is a flow rate of cooling water circulated by the pump 5 and an input power of the pump 5. The environmental information related to the air conditioner 6 includes, for example, the humidity and temperature of the air having the suction port 62, and the humidity and temperature of the air of the air outlet 63. Further, as the environmental information related to the air conditioner 6, the air volume may be included. As environmental information related to the room 20, there are indoor humidity, indoor temperature, and outside air temperature. Further, as the environmental information related to the room 20, the air pressure in the room may be included.

The mode memory unit 13 has a function of memorizing a physical mode prepared in advance. The physical mode is a simulation mode indicating a specific physical quantity of each of the control target devices and the house of the air-conditioning object. When the physical quantity is a fixed value that does not change with time, its physical mode does not contain parameters. When the physical quantity changes over time, its physical mode contains parameters. Each parameter is periodically updated, for example, by the mode update unit 14. The physical mode stored in the mode storage unit 13 includes, for example, a power consumption mode and a thermal mode. The power consumption mode is set in accordance with the type of the control target device included in the control target system 2. The thermal mode is set with respect to the room 20 and the air conditioner 6 of the air-conditioning object. The details of each mode will be described below.

(physical mode of freezer 4)

In the refrigerator 4, the refrigerant is compressed by the compressor 41, and the compressed refrigerant is exchanged with the outside air by the condenser 42. Heat exchange amount of time t from the condenser 42 of the heat exchange coefficient based [alpha] ₁ of the condenser 42, the compressor 41 of the heat exchange coefficient α _2, the time t of the refrigerating machine input power (power consumption) A _t 4, the time and t is specified by the external gas temperature temo _t . The heat exchange coefficient α ₁ is defined, for example, based on the area in contact with the outside air of the condenser 42. Further, the heat exchange coefficients α ₁ and α ₂ are both greater than zero. That is, at time t, the heat of the refrigerant carried away by the condenser 42 is expressed by the following formula (1).

[Number 1]

In the formula (1), the product of the heat exchange coefficient α ₂ and the input power A _t represents the temperature of the refrigerant compressed by the compressor 41. Therefore, at time t, the larger the input power A _t is, the higher the temperature and the higher the temperature of the refrigerant. Further, since the difference between the temperature of the refrigerant and the outside air temperature temo _t is large, the heat exchange rate is increased. On the other hand, even when the external gas temperature temo _t at the time t is extremely small, a high heat exchange rate can be obtained.

The heat of the refrigerant passing through the condenser 42 is obtained by subtracting the heat of the refrigerant taken away by the condenser 42 from the heat of the refrigerant before entering the condenser 42. In other words, at time t, the heat of the refrigerant passing through the condenser 42 is expressed by the following formula (2) using the heat exchange coefficient β of the compressor 41.

[Number 2] β × A _t - α ₁ × ( α ₂ × A _t - temo _t ) (2)

The first term of equation (2) (the product of the heat exchange coefficient β and the input power A _t ) represents the amount of heat of the refrigerant before entering the condenser 42. Further, the amount of refrigerant heat entering the compressor 41 is determined by the absolute amount of the refrigerant, so that the larger the input power A _t is, the more the refrigerant is compressed and the heat is increased.

Next, the refrigerant exchanged by the condenser 42 by the heat exchanger 42 is expanded by the expansion valve 43. The larger the amount of the refrigerant, the larger the opening degree θ of the expansion valve 43 is to reduce the pressure of the refrigerant. Therefore, the temperature of the refrigerant drops. That is, at time t, the temperature of the refrigerant after passing through the expansion valve 43 is expressed by the following formula (3).

The following formula (4) is obtained by arranging the formula (3).

Next, the refrigerant expanded by the expansion valve 43 is exchanged with the chilled water by the evaporator 44. The heat exchange system and a predetermined amount of the valve 43 by the expansion of the expansion of the temperature of the refrigerant (the formula (4)), the freezing temperature of the water inlet Iwi _t, and an evaporator 44 of the heat exchange coefficient η. Further, the chilled water inlet temperature Iwi _t is the temperature at which the chilled water enters the freezer 4 from the chilled water inlet 46 at time t. The heat exchange coefficient η is defined by the material of the evaporator 44, the contact area with the chilled water, and the contact pressure. Further, the contact pressure is defined by the flow rate V _{t of the} chilled water and the temperature and pressure of the refrigerant. That is, at time t, the heat of the chilled water taken away by the evaporator 44 is expressed by the following formula (5).

The following formula (6) is obtained by overriding the formula (5).

Formula (6) shows the heat exchanged between the refrigerator 4 and the chilled water at time t. Therefore, the chilled water outlet temperature Iwo _t at the time t is obtained by subtracting the equation (6) from the heat of the chilled water before entering the refrigerator 4. That is, at time t, is represented by the formula (7) from the chilled water inlet temperature of the chilled water chilled water inlet temperature of chilled water outlet 46 of the change of the temperature of chilled water outlet 47 towards the Iwi _t Iwo _t the system.

The following formula (8) is obtained by finishing the formula (7) in such a manner that the amount of freezing of the chilled water becomes the stated variable.

Here, in theory, the input power A _{t is} greater than 0 means that the refrigerator 4 is operated. However, the condition that the input power A _{t is} greater than 1 kW may be added in consideration of the detection error of the sensor or the like. In other words, when the input power A _t is 1 kW or less, it can be determined that the refrigerator 4 is not operating. In this case, the chilled water inlet temperature Iwi _t is equal to the chilled water outlet temperature Iwo _t .

The operating characteristics of the refrigerator 4 as follows are obtained according to the formula (8). That is, when the outside air temperature temo _t , the chilled water flow rate V _{t ,} and the chilled water inlet temperature Iwi _t are fixed, the chilled water outlet temperature Iwo _{t is} smaller as the input power A _t is larger. Further, when the input power A _t , the chilled water flow rate V _t and the chilled water inlet temperature Iwi _t are fixed, the chilled water outlet temperature Iwo _t is larger as the external air temperature temo _t is larger. Further, when the chilled water inlet temperature Iwi _t , the chilled water outlet temperature Iwo _{t ,} and the outside air temperature temo _{t are} fixed, the input power A _t is increased by increasing the flow rate V _{t of the} chilled water. Also, increasing the input power of A _t is monotonically increasing and is limited to the range 4 freezer capacity.

In formula (8), the difference between the outlet temperature and the inlet temperature of the chilled water chilled water (Iwi _t -Iwo _t), Temo outside air temperature _T, the input power and the flow rate V _t A _t like may be provided on the sensing by the refrigerating machine 4 Measured by. Therefore, using the error ε _t at the time t, a regression equation represented by the following formula (9) can be defined.

By finishing the formula (9), the time t of the power of the refrigerating machine 4 the input A of _t represented by the following formula (10). This equation (10) is the power consumption mode of the refrigerator 4. The formula (10) satisfies the physical property that the cooling effect of the refrigerator 4 on the chilled water decreases as the input power A _t becomes larger.

[Number 10]

(physical mode of pump 5)

The pump 5, the flow rate of the chilled water at time t V _t and the time t of the input pump power (power consumption) of 5 as having a relationship of _t PA of the following characteristics. That is, if the frequency of the input power PA _t of the pump 5 drops by 1 Hz, the flow rate V _{t is} reduced by 1/50 (2%). Further, if the frequency of the pump input power PA _t 5 drops of 1Hz, with respect to the power consumption of KW when operating at full speed, only the input power PA _t (1 - ((50-1) / 50) ³⁾ The reduction ratio. According to the above features, the relationship between the time t 5 of the pump input power PA flow of chilled water with _t V _t KW of power consumption when using the full speed and the full speed when the flow rate Vf, represented by the formula (11). This equation (11) is the power consumption mode of the pump 5.

In the equation (11), the flow rate V _t , the flow rate Vf at the time of full speed operation, and the power consumption KW at the time of full speed operation can be obtained by a sensor provided in the pump 5 . Thus, the time t 5 of the pump input power PA _t using Formula (11) uniquely calculated.

(physical mode of air conditioner 6)

The heat exchange amount (cooling capacity) C _t of the air conditioner 6 at time t is the heat exchange coefficient of the air conditioner 6 The heat exchange coefficient ξ, the flow rate V _t of the chilled water at the time t, the chilled water outlet temperature Iwo _t at the time t, and the temperature of the circulating air in the room 20 at the time t, that is, the indoor temperature temi _t are defined. That is, the air conditioner of the time t 6 the heat exchange amount of C _t represented by the following formula (12). Furthermore, the heat exchange coefficient The heat exchange coefficient defined by the flow rate of the chilled water is a heat exchange coefficient defined by the area in which the air conditioner 6 performs heat exchange between the circulating air of the room 20 and the chilled water.

[12] C _t = ψ × V _t × ξ × ( temi _t - Iwo _t ) = ρ × V _t × ( temi _t - Iwo _t ) (12) ρ = ψ × ξ

Therefore, using the error ε _t at time t, the following regression equation (13) can be defined. This formula (13) is a heat exchange amount (cooling capacity) mode of the air conditioner 6.

[Number 13] C _t = ρ × V _t ×( temi _t - Iwo _t )+ ε _t (13)

The air conditioner 6 is operated at a fixed speed and is always operated. Thus, the air conditioner a time t of the input power (power consumption) of the FA _t 6 represented by the formula (14). This equation (14) is a power consumption mode of the air conditioner 6.

[Number 14] FA _t = FA ... (14)

In this example, as shown in the formula (14), the input power FA _t of the air conditioner 6 is a fixed value FA. The fixed value FA can be obtained by a power sensor provided in the air conditioner 6. The fixed value FA can also be used as the rated power of the air conditioner 6.

(Physical mode of room 20)

In from time t-1 transitions to the time the heat room of t 20 the variation △ Q _t is due to the time t into the room heat chamber of 20's and heat Qi _t in the indoor room 20 of the new generation of, and at time t delivered to The amount of cooling in the room 20 is specified by Qo _t . That is, the heat change ΔQ _{t of the} room 20 is expressed by the following formula (15).

[Number 15] △ Q _t = Qi _t - Qo _t ... (15) Qo _t = C _t

If the room 20 heat change ΔQ _t at time t is greater than 0, the room temperature of the room 20 rises. If the time t of the heat room 20 of the variation △ Q _t is less than 0, the room 20 of the indoor temperature drops. If the time t of the heat room 20 of the variation △ Q _t is equal to 0, then no change in the room of the room temperature 20, time t-1 to maintain the indoor temperature of a room of 20.

Here, the heat Qi _t generated in the room 20 at the time t from the time t-1 can be divided into three elements of radiant heat, convective heat, and indoor heat generation. The radiant heat is generated by the external heat passing through the building of the room 20 to conduct heat into the room 20 according to the heat conduction law. The convection heat is generated by a part of the air in the room of the room 20 being released to the outside, and the outside fresh air is sucked into the room of the room 20. The heat generation is caused by people in the room of the room 20, electrical equipment, and the like.

Therefore, the heat Q _t generated in the room 20 at the time t from the time t-1 is the room of the outdoor air heat io _t of the room 20 at the time t, and the time t-1 (i.e., the start time of the time t). The heat of the air in the room ii _t-1 , the temperature of the building 20 of the room 20 at time t-1 (for example, walls, windows, roofs, etc.) temperature temb _t-1 , and the room 20 at time t-1 The indoor temperature temi _t-1 is specified. That is, the heat Qi _{t is} represented by the following formula (16).

[Number 16] Qi _t = μ ₁ + μ ₂ × ( io _t - ii _{t -1} ) + μ ₃ × ( temb _{t -1} + μ ₄ ×( temo _t - temb _{t -1} )- temi _{t -1} ) ...(16)

The first term on the right side of the equation (16) indicates the heat in the room of the room 20. The parameter μ ₁ indicates the amount of heat generated by the person in the room of the room 20, electrical equipment, and the like. For example, when the room 20 is a building or a factory, it is estimated that it will hardly change once the equipment is introduced. Also, it is estimated that the number of indoor staff and operators in the room 20 does not change much daily. Therefore, the parameter μ ₁ can also be a fixed value. Furthermore, the parameter μ ₁ can also be a time variable.

The second term on the right side of equation (16) represents convective heat. The parameter μ ₂ represents the ratio of the air in the room to the room 20 as a whole. If the pressure of the air in the room of the room 20 is fixed, the amount of fresh air entering the room from the outside of the room 20 is the same as the amount of air released from the room of the room 20 to the outside. Therefore, the absolute amount of heat of convective heat is uniquely defined by factors such as the surrounding structure of the building and the ability to ventilate, and is estimated to not change with time. Therefore, the parameter μ ₂ can also be a fixed value.

The third term on the right side of equation (16) indicates radiant heat. The parameter μ ₃ represents the parameter of convective heat. The parameter μ ₄ represents the parameter of the radiant heat. The radiant heat conduction path within the room 20 is considered to be as follows: First, the outdoor air of the room 20 is in heat exchange with the surrounding structure of the building, and then the surrounding structure of the building conducts heat to the air inside the room 20.

Next, the following equation (17) is obtained by expanding the third term on the right side of the equation (16).

[Number 17] μ ₃ ×( temb _{t -1} + μ ₄ ×( temo _t - temb _{t -1} )- temi _{t -1} )= μ ₃ ×(1 - μ ₄ )× temb _{t -1} + μ ₃ × μ ₄ × temo _t - μ ₃ × temi _{t -1} (17)

The following formula (18) is obtained by substituting the formula (17) into the formula (16).

[Equation 18] Qi _t = μ ₁ + μ ₂ × ( io _t - ii _{t -1} ) + μ ₃ × (1 - μ ₄ ) × temb _{t -1} + μ ₃ × μ ₄ × temo _t - μ ₃ × Temi _{t -1} ...(18)

On the other hand, the following equation (19) is obtained by returning the timing of the equation (16) to one unit.

[19] Qi _{t -1} = μ ₁ + μ ₂ ×( io _{t -1} - ii _{t -2} )+ μ ₃ ×(1 - μ ₄ ) × temb _{t -2} + μ ₃ × μ ₄ × temo _{t -1} - μ ₃ × temi _{t -2} ...(19)

The equation (19) is obtained by solving the equation (19) with respect to the temperature temb _t-2 of the surrounding structure of the building at time t-2. This equation (20) is the temperature mode of the surrounding structure of the building of the room 20.

[Number 20] temb _{t -2} = g (.) = ( Qi _{t -1} - μ ₁ - μ ₂ ×( io _{t -1} - ii _{t -2} )- μ ₃ × μ ₄ × temo _{t -1} + μ ₃ × temi _{t -2} )/( μ ₃ ×(1- μ ₄ ))...(20)

In equation (20), the heat Qi _t-1 generated in the room 20 at time t-1 can be observed, and other explanatory variables can also be obtained by the sensor. Therefore, equation (20) can be calculated by linear regression. Since the temperature tem _t-1 of the surrounding structure of the building changes mainly from the time of the external gas temperature and the indoor temperature from the time t-1 to the time t, the temperature difference and the heat exchange area of the outside air temperature and the indoor temperature are still It is defined by the area of the building's surrounding structure, walls, roof, windows, etc. That is, the temperature temb _t-1 of the surrounding structure of the building is represented by the following formula (21).

[Number 21] temb _{t -1} = τ ₁ ×( temo _t - g (.)) + τ ₂ ×( g (.)- temi _t )+ g (.)...(21)

By deforming the formula (21), the following formula (22) is obtained.

[22] temb _{t -1} = τ ₁ × temo _t - τ ₂ × temi _t + τ ₃ × g (.) (22) τ ₃ =1+ τ ₂ - τ ₁

The following regression equation (23) is obtained by substituting the equation (22) into the equation (16) and sorting it. This equation (23) is the heat mode of the room 20.

[Number 23] Qi _t = ν ₀ + ν ₁ × Qi _{t -1} + ν ₂ × ( io _t - ii _{t -1} ) + ν ₃ × ( io _t - ii _{t -2} ) + ν ₄ × temi _t + ν ₅ × temi _{t -1} + ν ₆ × temi _{t -2} + ν ₇ × temo _t + ν ₈ × temo _{t -1} + ε _t (23) ν ₀ = μ ₁ × (1 - τ ₃ ) ν ₁ = τ ₃ ν ₂ = μ ₂ ν ₃ = τ ₃ × μ ₂ ν ₄ = μ ₃ × (1 - μ ₄ ) × τ ₃ ν ₅ = μ ₃ ν ₆ = τ ₃ × μ ₃ ν ₇ = τ ₁ × μ ₃ ×(1 - μ ₄ ) × μ ₃ ν ₈ = τ ₄ × μ ₄

At equation (23), at the point in time at the beginning of time t, all of the variables on the right can be obtained by the sensor or can be calculated using environmental information. Therefore, since the equation (23) satisfies the condition of statistical estimation, the parameters ν ₀ ~ ν ₈ can be estimated.

The mode update unit 14 has a function of updating the physical mode stored in the mode storage unit 13. The mode update unit 14 updates the physical mode by periodically estimating and updating the value of the parameter stored in the physical mode of the mode storage unit 13 at the period T2. The period T2 is, for example, equal to or longer than the period T1. The mode update unit 14 estimates the value of the parameter of the physical mode using the environmental information stored in the environmental information storage unit 12. The mode update unit 14 is used before the time when the update is performed. Part or all of the environmental information is used to estimate the value of the physical mode parameter. The mode update unit 14 performs the estimation of the value of the parameter by applying the constrained least squares method, for example, using statistics. Furthermore, the more information about environmental changes and equipment operation, the higher the accuracy of the estimation of the values of the parameters.

Specifically, the mode update unit 14 estimates the values of the parameters κ ₁ , κ ₂ , and κ ₃ using the regression equation (10) stored in the pattern storage unit 13 and the environmental information stored in the environmental information storage unit 12. The environmental information used for the estimation is the difference between the chilled water inlet temperature and the chilled water outlet temperature obtained by the sensor or the like (Iwi _t -Iwo _t ), the external gas temperature temo _t , the input power A _t , and the flow rate V Related environmental information such as _t . The constraint is that the chilled water inlet temperature Iwi _t and the chilled water outlet temperature Iwo _{t are} greater than 0 and the chilled water inlet temperature Iwi _{t is} greater than the chilled water outlet temperature Iwo _t .

The mode update unit 14 estimates the value of the parameter ρ using the regression equation (13) stored in the pattern storage unit 13 and the environmental information stored in the environmental information storage unit 12. Here, the heat exchange amount C _{t of the} air conditioner 6 can be calculated from the temperature of the air of the suction port 62 and the temperature of the air of the air outlet 63. Further, environmental information related to the chilled water outlet temperature Iwo _t , the indoor temperature temi _{t of the} room 20, and the flow rate V _{t is} used. Therefore, the mode update unit 14 formulates the regression equation (13) by estimating the value of the parameter ρ by regression analysis.

Similarly, the mode update unit 14 estimates the values of the parameters μ ₁ to μ ₄ using the equation (20) stored in the mode storage unit 13 and the environmental information stored in the environmental information storage unit 12. Further, the mode update unit 14 estimates the values of the parameters ν ₀ to ν ₈ using the equation (23) stored in the mode storage unit 13 and the environmental information stored in the environmental information storage unit 12.

The power consumption system construction unit 15 has a function of constructing a power consumption system using the physical mode updated by the mode update unit 14 in accordance with the configuration of the control target system 2. The power consumption system is a simulation mode indicating the power consumption of the control target system 2 for minimizing the total power consumption of the control target system 2 until the end of the operation, and includes power consumption corresponding to the configuration of the control target system 2. mode. Power consuming system construction unit 15 such as The power consumption system is periodically constructed in cycle T3. This period T3 is, for example, equal to or longer than the period T1. The power consumption system construction unit 15 stores in advance the configuration information indicating the configuration of the control target system 2. The configuration information is changed by the administrator, for example, based on the change in the physical configuration of the control target system 2 (for example, addition, removal of a control target device, modification of piping, etc.). The power consumption system construction unit 15 can also construct a power consumption system based on the change of the configuration information.

Here, the chilled water sent from the chilled water outlet 47 exchanges heat with the air in the room of the room 20 in the air conditioner 6. Further, the chilled water absorbs the heat of the air in the room of the room 20 and returns to the chilled water inlet 46. That is, by the time t of the heat absorber was added to the chilled water outlet temperature of Iwo time t of _t, t + 1 becomes the time of the chilled water inlet temperature Iwi _{t + 1.} That is, the chilled water inlet temperature Iwi _t+1 at the time t+1 is expressed by the following formula (24).

[Number 24] Iwi _{t +1} = (4.2 × V _t × Iwo _t + C _t ) / (4.2 × V _t ) = (4.2 × Iwo _t + ρ × ( temi _t - Iwo _t )) / 4.2... (twenty four)

The equation (24) is differentiated by using the chilled water outlet temperature Iwo _t at the time t to obtain the following equation (25).

Equation (25) shows how much the temperature rises to the chilled water inlet temperature Iwi _t+1 at time t+1 when the chilled water outlet temperature Iwo _t at time t is increased by one unit. Thus, at the beginning of time t, since the heat enters the room of the room 20 according to the change of time, the environment changes if the air conditioner is not installed. Therefore, in order to maintain the environment at time t-1 even if there is a change in heat, it is necessary to calculate the necessary amount of refrigeration. Therefore, in the operation control device 1, the constrained Lagrangian system is used in order to reduce the power consumption for the entire period of operation of the control target system 2.

The power consumption system construction unit 15 constructs a constraint Lagrangian system as a power consumption system, for example. The power consumption system construction unit 15 constructs a constrained Lagrangian system represented by the following formula (26), for example, using the Lagrangian multiplier q.

The power consumption of the control target system 2 at time t is indicated in parentheses in the first term on the right side of equation (26). In this example, the control object system 2 includes a refrigerator 4, a pump 5, and an air conditioner 6. Therefore, the power consumption of the control target system 2 at time t is represented by the sum of the input power A _{t of the} refrigerator 4 , the input power PA _{t of the} pump 5 , and the input power FA _t of the air conditioner 6 . The second term on the right side of equation (26) represents the constraint mode. The restriction mode refers to a mode indicated by the control target system 2. In this example, the restriction mode is the heat change mode, indicating that the amount of refrigeration at time t must be equal to the amount of heat generated at time t or the amount of heat that should be removed. The heat change mode is a mode indicating the restriction of the heat change of the air-conditioning object (the room 20 in this example) by the control target system 2.

Thus, equation (26) represents that by selecting the chilled water outlet temperature Iwo _t and the flow rate V _t at time t, the amount of refrigeration at time t is equal to the amount of heat generated at time t or the amount of heat that should be taken away, and from time t0. The sum of the power consumption of the control target system 2 up to the time T is minimized. The time t0 is, for example, the time at which the operation control device 1 calculates the current control value. The time t0 can also be the operation start time of the control target system 2. Moreover, the time T is the operation end time of the control target system 2. When the control target system 2 is operated indefinitely, the time T becomes infinite.

Furthermore, the restriction mode can also be set such that the indoor temperature of the room 20 reaches the set indoor target temperature by the operation control device 1, the cooling capacity (heat exchange amount) C _t at the time t and the new heat Q _t generated at the time _t The difference is the biggest. Further, the restriction mode may be set such that the indoor temperature of the room 20 reaches the indoor target temperature, and the cooling capacity C _t at the time t is equal to the new heat Q _t generated at the time _t .

By deforming the formula (26), the following formula (27) is obtained.

The following Hamilton equation (28) is obtained by solving equation (27).

Furthermore, the function f _t (‧) in the equation (28) is represented by the following equation (29), and the function f _t+1 (‧) is expressed by the equation (30).

[Number 30]

The control value calculation unit 16 has a function of calculating a control value based on the power consumption system constructed by the power consumption system construction unit 15. The control value calculation unit 16 periodically calculates the control value in the period T3, for example. Specifically, the control value calculation unit 16 calculates the optimum value of the chilled water outlet temperature Iwo _t and the flow rate V _t at the time t by solving the Hamilton equation (28). However, at time t, since the environmental information after time t+1 cannot be obtained, the Hamilton equation (28) cannot be directly solved. Therefore, the solution to Hamilton's equation (28) is explained below.

(1st solution)

The following equation (31) can be established by making the time from the time t to the time t+1 extremely small.

Formula (31) means that there is no sudden change in the environment of the external gas in a very short time interval. Therefore, it can be assumed that the following equations (32) and (33) are established.

[Number 32] f _t (.)= f _{t +1} (.)...(32)

[Number 33]

Further, by substituting the equations (32) and (33) into the Hamilton equation (28) and collating, the following system equation (34) is obtained.

The control value calculation unit 16 reads the environmental information stored in the environmental information storage unit 12, and acquires all the necessary information in order to solve the system type (34) based on the read environmental information. Such information is obtained directly from environmental information or based on environmental information. The control value calculation unit 16 calculates the optimum value of the chilled water outlet temperature Iwo _t and the flow rate V _t at the time t by using the information to solve the system equation (34).

(Second solution)

In the initial operation of the control target system 2 at the start of the operation, that is, during the initial operation of time 0 (t=0), since the room 20 is not temporarily air-conditioned, it is considered that the indoor temperature of the room 20 is higher than the indoor target temperature. In the case where the control target system 2 is operated in this case, in order to quickly bring the indoor temperature of the room 20 to the indoor target temperature, the initial setting values of the refrigerator 4 and the pump 5 are set to the maximum value (maximum capacity). Running. In this state, the control target system 2 achieves the maximum output ΔQ ₀ by maximizing the input of the refrigerator 4 and the pump 5. Therefore, it can be said that the maximum input is equal to the optimal solution.

The operation of the control target system 2 during this period is the same as the optimal control operation. Therefore, by returning the time of the Hamilton equation (28) to one unit by making the time 0 the time t-1, the following equation (35) is obtained.

Further, by substituting the equation (29) into the function f _t (‧) and replacing the third equation of the Hamilton equation (28) with the third equation of the equation (35), the following system equation (36) is obtained.

The control value calculation unit 16 reads the environmental information stored in the environmental information storage unit 12, and acquires all the information necessary for solving the system type (36) based on the read environmental information. Such information is obtained directly from environmental information or based on environmental information. The control value calculation unit 16 calculates the optimum value of the chilled water outlet temperature Iwo _t and the flow rate V _t at the time t by using the information to solve the system equation (36).

The control value setting unit 17 has a function of transmitting a control instruction to the control target system 2 in order to set the control value calculated by the control value calculation unit 16 to the device to be controlled. In this case, the control value setting unit 17 for transmitting by the control value calculation unit 16 calculates the temperature of the chilled water outlet of Iwo _t is set to 4 indicating the control of the chiller. Further, the control value setting unit 17 transmits a control instruction for setting the flow rate V _t calculated by the control value calculation unit 16 to the pump 5 to the pump 5. The control value setting unit 17 may, for example, transmit a current value for setting a frequency corresponding to the flow rate V _t to the pump 5.

The control value setting unit 17 sets the indoor target temperature of the room 20 to the control target system 2. The indoor target temperature of the room 20 is set by the user to the operation control device 1. The control value setting unit 17 performs control by, for example, writing a set value by the control unit of the refrigerator 4, and transmitting an analog signal of the current corresponding to the indoor target temperature to the external control terminal of the inverter of the pump 5. The control value setting unit 17 can also set the indoor target humidity of the room 20 to the control target system 2. The indoor target humidity of the room 20 is set by the user to the operation control device 1. In this case, similarly to the indoor target temperature, the control value setting unit 17 performs setting corresponding to the indoor target humidity in the control target device of the control target system 2.

Next, an operation control method of the operation control device 1 having the above configuration will be described. FIG. 5 is a flowchart showing an example of a processing procedure of the operation control method of the operation control device 1.

As shown in FIG. 5, first, the environmental information collecting unit 11 receives the environmental information acquired by the sensor or the like provided in the control target system 2 and the time information indicating the time at which each environmental information is acquired. Further, the environmental information collecting unit 11 stores the received environmental information in association with the time information and stores it in the environmental information storage unit 1 (collection step S11).

Then, the mode update unit 14 updates each physical mode stored in the mode storage unit 13 based on the environmental information collected by the environment information collecting unit 11 in the collection step S11 (mode update step S12). Specifically, the mode update unit 14 estimates the value of the parameter stored in the physical mode stored in the mode storage unit 13 using part or all of the environmental information acquired before the time of the update in the environmental information stored in the environmental information storage unit 12. . Further, the mode update unit 14 updates the physics by updating the parameters of the physical mode with the values of the estimated parameters. mode. The mode update unit 14 estimates the value of the parameter by applying the constrained least squares method, for example, by using statistics.

Then, the power consumption system construction unit 15 constructs a power consumption system corresponding to the configuration of the control target system 2 in the physical mode updated by the mode update unit 14 in the mode update step S12 (the power consumption system construction step S13). The power consumption system construction unit 15 constructs, for example, a constrained Lagrangian system of the formula (26).

Then, the control value calculation unit 16 calculates the control value of the control target device of the control target system 2 using the power consumption system constructed by the power consumption system construction unit 15 in the power consumption system construction step S13 (calculation step S14). The control value calculation unit 16 dynamically calculates the control value such that the total power consumption up to the end of the operation of the control target system 2 is minimized, for example, by using the above-described first solution or second solution. In this example, the control value calculation unit 16 calculates an optimum value of the chilled water outlet temperature Iwo _t and the flow rate V _t at the time t.

Then, the control value setting unit 17 sets the control value calculated by the control value calculation unit 16 in the calculation step S14 to the control target device of the control target system 2 (setting step S15). In this example, the control value setting unit 17 transmits a control instruction for setting the chilled water outlet temperature Iwo _t calculated by the control value calculating unit 16 in the calculation step S14 to the refrigerator 4. Further, the control value setting unit 17 transmits a control instruction for setting the flow rate V _t calculated by the control value calculation unit 16 in the calculation step S14 to the pump 5 to the pump 5.

Then, the processing of one of the series of operation control methods of the operation control device 1 is completed. Further, in the flowchart of FIG. 5, the collecting step S11 to the setting step S15 are sequentially performed as a series of processing, but the present invention is not limited thereto. For example, the collection step S11 may be performed periodically at a period T1 (for example, about 1 second). Further, the mode update step S12 may be performed periodically in the period T2. Moreover, the power consumption system construction step S13, the calculation step S14, and the setting step S15 are periodically performed as a series of processes in the period T3. In this manner, the collection step S11, the mode update step S12, and the power consumption system construction step S13 to the setting step S15 may be performed independently.

As described above, the operation control device 1 prepares the power consumption mode in accordance with the type of the device to be controlled included in the control target system 2, and updates each power consumption mode based on the environmental information. Further, according to the configuration of the control target system 2, the power consumption system is constructed from the power consumption mode. Therefore, even if the addition or removal of the control target device is performed, it is not necessary to reproduce the power consumption mode, and the power consumption system can be constructed using the power consumption mode of the control target device included in the changed control target system 2. Therefore, the reorganization of the power consumption system corresponding to the change in the configuration of the control target system 2 can be facilitated.

In the operation control device 1, the power consumption system is used, and the control value of the control target device is calculated so that the power consumption of the control target system 2 is minimized, and the control value is set to the control target device. Therefore, not only the power consumption at a certain point in time can be minimized, but also the total power consumption of the control target system 2 up to the end of the operation can be minimized. As a result, power consumption can be reduced.

Further, in the operation control device 1, the power consumption system is a Lagrang system including a restriction mode. Further, since the restriction mode includes the heat change mode, the condition defined by the restriction mode, that is, the condition of the heat change defined by the heat change mode can be satisfied, and the power consumption can be reduced.

Furthermore, the operation control device and the operation control method of the present invention are not limited to the above embodiment. For example, the control target system 2 may further include one or a plurality of terminal devices such as an Air Handling Unit (AHU). In this case, the power consumption mode of the air conditioner is previously stored in the mode memory unit 13, and the mode update unit 14 updates the power consumption mode of the air conditioner. Further, the power consumption system construction unit 15 constructs a power consumption system including a power consumption mode of the air conditioner.

Further, the control target system 2 may include two or more air conditioners 6. In this case, the power consumption system construction unit 15 constructs a power consumption system including a power consumption mode corresponding to the number of the air conditioners 6.

Further, in the above embodiment, the air conditioner 6 is operated at a fixed speed, and the input power FA _t of the air conditioner 6 is fixed irrespective of time, but is not limited thereto. For example, the air conditioner 6 may be configured to include a frequency converter, and the air volume is controlled by the operation control device 1. In this case, the input power FA _{t of the} air conditioner 6 may be a mode in which the time is changed, and the mode update unit 14 may update the power consumption mode of the air conditioner 6. Further, the control value calculation unit 16 calculates the air volume of the air conditioner 6 as a control value in addition to the chilled water outlet temperature Iwo _t and the flow rate V _t as control values. Further, the control value setting unit 17 may transmit a control instruction for setting the air volume calculated by the control value calculation unit 16 to the air conditioner 6.

Further, the air conditioner 6 may be configured to include a switch, and the operation control device 1 controls the on/off of the air conditioner 6. In this case, the input power FA _{t of the} air conditioner 6 may be a mode in which the time is changed, and the mode update unit 14 may update the power consumption mode of the air conditioner 6. Further, the control value calculation unit 16 calculates a state value indicating either the on state or the off state of the air conditioner 6 as a control value, in addition to the chilled water outlet temperature Iwo _t and the flow rate V _t as control values. Further, the control value setting unit 17 may transmit a control instruction for setting the air conditioner 6 to the on state or the off state to the air conditioner 6.

Further, as the physical mode of each of the devices to be controlled, a physical mode including a variable indicating the time series of the staleness of the device may be used.

Further, the mode update unit 14 may estimate the value of all the parameters stored in the physical mode of the mode storage unit 13, but is not limited thereto. For example, in the above-described embodiment, the mode update unit 14 may estimate the values of the parameters ν ₀ to ν ₈ using the equation (23) and the environmental information, using the values of the equation (10) and the environmental information estimation parameters κ ₁ to κ ₃ .

Further, in the above-described embodiment, the administrator changes the configuration information of the control target system 2, but the present invention is not limited thereto. The power consumption system construction unit 15 can also detect the change of the configuration of the control target system 2, and change the configuration information of the control target system 2 based on the configuration of the control target system 2 after the change.

Further, in the above embodiment, the restriction mode includes the heat change mode, but is not limited thereto. The constraint mode may, for example, also include a machine performance mode. Machine performance mode is expressed and controlled The mode of the performance-related constraints of the control target machine of the object system 2. In this case, the conditions of the machine performance specified by the machine performance mode can be satisfied, and the power consumption can be reduced.

Moreover, Hamilton equation (28) is an equation of equality equation, but in actual application, there is a situation in which the existence of a room with different environmental requirements, the problem of machine performance, etc. cannot be the constraint of the equation. Therefore, the control value calculation unit 16 can also calculate the control value by the nonlinear programming method. Specifically, the control value calculation unit 16 can solve the equation (37) by satisfying the following conditional expression (38).

That is, the chilled water outlet temperature Iwo _t is equal to or higher than the minimum chilled water outlet temperature Iwo _min determined by the performance of the refrigerator 4 at all times. Further, when the refrigerator 4 is in the cooling state, since the refrigerator 4 does not heat the chilled water, the chilled water outlet temperature Iwo _{t is} not greater than the chilled water inlet temperature Iwi _t at all times. The control value calculation unit 16 may, for example, deform the equation (37) in the same manner as in the above-described embodiment, and calculate the control value using the edged marine matrix.

[Industrial availability]

According to this embodiment, it is possible to provide a system that can flexibly cope with a control object system The operation control device and the operation control method that consume power can be further reduced.

1‧‧‧Operation control device

11‧‧‧Environment Information Collection Department

12‧‧‧Environmental Information Memory Department

13‧‧‧Mode Memory

14‧‧‧Mode Update Department

15‧‧‧Power Consumption System Construction Department

16‧‧‧Control value calculation unit

17‧‧‧Control value setting unit

Claims (6)

An operation control device includes: a mode update unit that updates a power consumption mode prepared in accordance with a type of a control target device included in an air conditioning system, that is, a control target system, based on the collected environmental information; and a power consumption system construction unit. According to the configuration of the control target system, the power consumption system is constructed from the power consumption mode updated by the mode update unit, and the calculation unit uses the power consumption system constructed by the power consumption system construction unit. The control value of the control target device is calculated such that the power consumption of the control target system is minimized, and the control unit sets the control value calculated by the calculation unit to the control target device. The operation control device according to claim 1, wherein the power consumption system includes a Lagrang system of a restriction mode, and the restriction mode is a mode indicating a restriction in the control target system. The operation control device according to claim 2, wherein the restriction mode includes a heat change mode indicating a mode of restriction relating to a change in heat of the air-conditioning object by the control target system. The operation control device according to claim 2 or 3, wherein the restriction mode includes a machine performance mode indicating a mode of restriction relating to performance of the control target machine. The operation control device according to any one of claims 1 to 4, wherein the calculation unit dynamically calculates the control value such that the power consumption from the operation start time to the operation end time of the control target system is the smallest. An operation control method includes: a mode update step of updating a power consumption mode prepared according to a type of a control target device included in an air conditioning system, that is, a control target system, based on the collected environmental information; and a power consumption system construction step, According to the configuration of the control target system, the power consumption system is constructed from the updated power consumption mode in the mode update step, and the calculation step is used in the power consumption system constructed in the power consumption system construction step. The control value of the control target device is calculated such that the power consumption until the end of the operation of the control target system is minimized, and the setting step is set to the control target device in the control value calculated in the calculation step.