Linkage control method and device for subway air and water system and subway air and water system

Abstract

The present application relates to rail transit technical field, provide a kind of linkage control method, device and subway air-water system of subway air-water system, the linkage control method of subway air-water system includes: obtaining subway indoor operating condition;Determine that subway indoor is in normal operating condition, obtain outdoor air enthalpy, outdoor temperature and indoor station hall / air enthalpy of platform;According to outdoor air enthalpy, outdoor temperature and indoor station hall / air enthalpy of platform, determine the current operating mode of subway air-water system, operating mode includes air conditioning mode and ventilation mode;Control subway air-water system runs to different operating mode and executes corresponding control strategy.The present application can realize the independent or linkage control of subway air system and water system, with multiple operating modes and control strategies, to realize the accurate control of subway air-water system, improve operating energy efficiency, achieve the purpose of energy saving, with control precision high, energy efficiency high, energy saving and other characteristics.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit, in particular to a linkage control method and device for a subway air and water system and the subway air and water system. BACKGROUND

[0002] Subway buildings are a very special type of public buildings, mainly in terms of small building area, large passenger flow, large fresh air demand, small cooling capacity of refrigeration machine room, simple terminal system, etc. The functional areas are mainly divided into station hall public area, platform public area, equipment room and living room, etc. Subway buildings have relatively low humidity requirements. Generally, the humidity in public areas should not be higher than 70% to meet the requirements, the temperature should be lower than 2-3℃ of outdoor temperature and not higher than 30℃, at the same time, the CO2 concentration in underground station public area should not be higher than 1200ppm, should be lower than 1500ppm, and there are requirements for inhalable particulate matter concentration.

[0003] At present, the commonly used subway air and water system generally includes: air system and water system, the air system is responsible for temperature regulation, humidity regulation, fresh air supplement, inhalable particulate matter filtration and other functions, and the water system is mainly responsible for the supply of centralized cold water. The existing subway air system and water system are controlled separately, the operation control strategy is single, and the operation energy consumption is high. SUMMARY

[0004] The present application provides a linkage control method and device for a subway air and water system and the subway air and water system, which can realize independent or linkage control of the subway air system and the water system, has multiple operation modes and control strategies, and has the characteristics of high control precision, high energy efficiency and energy saving.

[0005] The present application provides a linkage control method for a subway air and water system, comprising:

[0006] Obtaining the indoor operation condition of the subway;

[0007] Determining that the indoor condition of the subway is in normal operation condition, obtaining the outdoor air enthalpy, outdoor temperature and indoor station hall / platform air enthalpy;

[0008] According to the outdoor air enthalpy, the outdoor temperature and the indoor station hall / platform air enthalpy, determining the current operation mode of the subway air and water system, the operation mode including air conditioning mode and ventilation mode;

[0009] Controlling the subway air and water system to execute corresponding control strategies when running in different operation modes.

[0010] According to the subway air-water system linkage control method provided by the application, when the subway air-water system runs in different operation modes, corresponding control strategies are executed, including: when the subway air-water system runs in the air conditioning mode, the control strategies executed at least include: air-water linkage control strategy, the air-water linkage control strategy includes:

[0011] Obtaining the indoor station hall / platform temperature;

[0012] According to the indoor station hall / platform temperature, the fan operation frequency and operation number of the station hall / platform air handling unit of the subway air-water system are controlled;

[0013] According to the indoor station hall / platform temperature, the operation frequency of the refrigerated water pump of the subway air-water system is controlled;

[0014] According to the supply air temperature of the station hall / platform air handling unit, the adjustment valve opening degree of the first surface cooler of the station hall / platform air handling unit is controlled.

[0015] According to the subway air-water system linkage control method provided by the application, according to the indoor station hall / platform temperature, the fan operation frequency and operation number of the station hall / platform air handling unit of the subway air-water system are controlled, specifically including:

[0016] When the indoor station hall / platform temperature is greater than the first preset upper temperature limit value, it is judged whether the current fan operation frequency of the station hall / platform air handling unit is greater than or equal to the first preset maximum frequency: if yes, the fan operation frequency of the station hall / platform air handling unit is unchanged, if no, it is judged whether the current fan operation number of the station hall / platform air handling unit reaches the maximum value: if no, the fan operation number of the station hall / platform air handling unit is increased, if yes, the fan operation frequency of the station hall / platform air handling unit is increased;

[0017] When the indoor station hall / platform temperature is greater than or equal to the first preset lower temperature limit value and less than or equal to the first preset upper temperature limit value, the fan operation frequency and operation number of the station hall / platform air handling unit are unchanged;

[0018] When the indoor station hall / platform temperature is less than the first preset temperature lower limit value, it is judged whether the fan operating frequency of the current station hall / platform air handling unit is less than or equal to the first preset minimum frequency: if not, the fan operating frequency of the station hall / platform air handling unit is reduced, and if yes, it is judged whether the fan operating number of the current station hall / platform air handling unit is greater than 1: if yes, the fan operating number of the station hall / platform air handling unit is reduced, and if not, the fan operating frequency of the station hall / platform air handling unit is unchanged, and the step of controlling the operating frequency of the chilled water pump of the subway air-water system according to the indoor station hall / platform temperature is executed.

[0019] According to the subway air-water system linkage control method provided by the application, the step of controlling the operating frequency of the chilled water pump of the subway air-water system according to the indoor station hall / platform temperature specifically comprises:

[0020] When the indoor station hall / platform temperature is greater than the first preset temperature upper limit value, it is judged whether the operating frequency of the current chilled water pump is greater than or equal to the second preset maximum frequency: if yes, the operating frequency of the chilled water pump is unchanged, and if not, the operating frequency of the chilled water pump is increased;

[0021] When the indoor station hall / platform temperature is greater than or equal to the first preset temperature lower limit value and less than or equal to the first preset temperature upper limit value, the operating frequency of the chilled water pump is unchanged;

[0022] When the indoor station hall / platform temperature is less than the first preset temperature lower limit value, it is judged whether the operating frequency of the current chilled water pump is less than or equal to the second preset minimum frequency, and whether the differential pressure of the collecting and distributing device of the subway air-water system is less than or equal to the preset differential pressure value: if yes, the operating frequency of the chilled water pump is unchanged, and if not, it is judged whether the indoor temperature of the subway equipment room is greater than the second preset temperature upper limit value, and whether the adjusting valve opening degree of the second surface cooler of the equipment room air handling unit of the subway air-water system is the second preset maximum opening degree value: if yes, the operating frequency of the chilled water pump is unchanged, and if not, the operating frequency of the chilled water pump is reduced;

[0023] And when the indoor station hall / platform temperature is less than the first preset temperature lower limit value and the operating frequency of the chilled water pump is unchanged, the step of controlling the adjusting valve opening degree of the first surface cooler of the station hall / platform air handling unit according to the supply air temperature of the station hall / platform air handling unit is executed.

[0024] According to the subway air-water system linkage control method provided by the application, the step of controlling the adjusting valve opening degree of the first surface cooler of the station hall / platform air handling unit according to the supply air temperature of the station hall / platform air handling unit specifically comprises:

[0025] When the supply air temperature of the station hall / platform air handling unit is greater than the preset supply air temperature upper limit value, it is determined whether the current adjusting valve opening degree of the first surface cooler is greater than or equal to the first preset maximum opening degree value: if yes, the adjusting valve opening degree of the first surface cooler is unchanged, and if no, the adjusting valve opening degree of the first surface cooler is increased.

[0026] When the supply air temperature of the station hall / platform air handling unit is greater than or equal to the preset supply air temperature lower limit value and less than or equal to the preset supply air temperature upper limit value, the adjusting valve opening degree of the first surface cooler is unchanged.

[0027] When the supply air temperature of the station hall / platform air handling unit is less than the preset supply air temperature lower limit value, it is determined whether the current adjusting valve opening degree of the first surface cooler is less than or equal to the first preset minimum opening degree value: if yes, the adjusting valve opening degree of the first surface cooler is unchanged, and if no, the adjusting valve opening degree of the first surface cooler is decreased.

[0028] According to the subway air and water system linkage control method provided by the application, when the subway air and water system runs in the air conditioning mode, the control strategy further includes at least one of the following:

[0029] Controlling the fan operation frequency, the operation number of the equipment room air handling unit of the subway air and water system, and the adjusting valve opening degree of the second surface cooler of the equipment room air handling unit.

[0030] Controlling the electric two-way valve opening degree of the living room fan coil of the subway air and water system.

[0031] Controlling the operation frequency of the fresh air fan of the subway air and water system.

[0032] Controlling the operation frequency of the return air fan of the subway air and water system.

[0033] Controlling the operation number of the chiller unit of the subway air and water system.

[0034] Controlling the operation frequency of the chilled water pump of the subway air and water system.

[0035] Controlling the operation frequency of the cooling water pump of the subway air and water system.

[0036] Controlling the operation number of the cooling tower of the subway air and water system and the fan operation frequency of the cooling tower.

[0037] According to the subway air and water system linkage control method provided by the application, the step of controlling the fan operation frequency, the operation number of the equipment room air handling unit of the subway air and water system, and the adjusting valve opening degree of the second surface cooler of the equipment room air handling unit specifically includes:

[0038] Acquire the indoor temperature of the metro equipment room;

[0039] When the indoor temperature of the equipment room is greater than the second preset upper temperature limit value, it is judged whether the current fan operating frequency of the equipment room air handling unit is greater than or equal to the third preset maximum frequency; if yes, the fan operating frequency of the equipment room air handling unit is unchanged, and if no, it is judged whether the current fan operating number of the equipment room air handling unit reaches the maximum value; if no, the fan operating number of the equipment room air handling unit is increased, and if yes, the fan operating frequency of the equipment room air handling unit is increased.

[0040] When the indoor temperature of the equipment room is greater than or equal to the second preset lower temperature limit value and less than or equal to the second preset upper temperature limit value, the fan operating frequency and the operating number of the equipment room air handling unit are unchanged.

[0041] When the indoor temperature of the equipment room is less than the second preset lower temperature limit value, it is judged whether the current fan operating frequency of the equipment room air handling unit is less than or equal to the third preset minimum frequency; if no, the fan operating frequency of the equipment room air handling unit is reduced, and if yes, it is judged whether the current fan operating number of the equipment room air handling unit is greater than 1; if yes, the fan operating number of the equipment room air handling unit is reduced, and if no, the fan operating frequency of the equipment room air handling unit is unchanged, and the step of adjusting the opening degree of the second surface cooler is executed.

[0042] According to the subway air-water system linkage control method provided by the application, the step of adjusting the opening degree of the second surface cooler is executed, which specifically includes:

[0043] When the indoor temperature of the equipment room is greater than the second preset upper temperature limit value, it is judged whether the current fan operating frequency of the equipment room air handling unit is greater than or equal to the third preset maximum frequency; if yes, the fan operating frequency of the equipment room air handling unit is unchanged, and if no, it is judged whether the current fan operating number of the equipment room air handling unit reaches the maximum value; if no, the fan operating number of the equipment room air handling unit is increased, and if yes, the fan operating frequency of the equipment room air handling unit is increased.

[0044] When the indoor temperature of the equipment room is greater than or equal to the second preset lower temperature limit value and less than or equal to the second preset upper temperature limit value, the fan operating frequency and the operating number of the equipment room air handling unit are unchanged.

[0045] When the indoor temperature of the equipment room is less than the second preset lower temperature limit value, it is judged whether the current fan operating frequency of the equipment room air handling unit is less than or equal to the third preset minimum frequency; if no, the fan operating frequency of the equipment room air handling unit is reduced, and if yes, it is judged whether the current fan operating number of the equipment room air handling unit is greater than 1; if yes, the fan operating number of the equipment room air handling unit is reduced, and if no, the fan operating frequency of the equipment room air handling unit is unchanged, and the step of adjusting the opening degree of the second surface cooler is executed.

[0046] The application provides a linkage control method of a subway air and water system, and the step of controlling the operation frequency of a cooling water pump of the subway air and water system, specifically comprising the following steps:

[0047] Obtaining the operation number of a cooling water unit of the subway air and water system, and controlling the operation number of the cooling water pump to correspond to the cooling water unit;

[0048] When the operation number of the cooling water pump increases by one, the operation frequency of the cooling water pump is controlled to decrease and be greater than or equal to a fourth preset minimum frequency;

[0049] When the operation number of the cooling water pump decreases by one, the operation frequency of the cooling water pump is controlled to increase and be less than or equal to a fourth preset maximum frequency;

[0050] When the operation number of the cooling water pump is unchanged, the temperature difference between the inlet and outlet water of the cooling water pump is obtained;

[0051] When the temperature difference between the inlet and outlet water of the cooling water pump is greater than a preset upper temperature difference limit value, if the operation frequency of the cooling water pump is greater than or equal to the fourth preset maximum frequency, the operation frequency of the cooling water pump is controlled to be unchanged; if the operation frequency of the cooling water pump is less than the fourth preset maximum frequency, whether the total power of the current cooling water unit and the cooling water pump is greater than or equal to the total power of the cooling water unit and the cooling water pump after frequency increasing is further judged, if yes, the cooling water pump is controlled to operate at a high frequency, and if no, the operation frequency of the cooling water pump is controlled to be unchanged;

[0052] When the temperature difference between the inlet and outlet water of the cooling water pump is greater than or equal to a preset lower temperature difference limit value and less than or equal to the preset upper temperature difference limit value, the operation frequency of the cooling water pump is controlled to be unchanged;

[0053] When the temperature difference between the inlet and outlet water of the cooling water pump is less than the preset lower temperature difference limit value, if the operation frequency of the cooling water pump is less than or equal to the fourth preset minimum frequency and the dry pipe pressure difference value of the cooling water pump is less than or equal to a preset safety protection value, the operation frequency of the cooling water pump is controlled to be unchanged, otherwise, whether the total power of the current cooling water unit and the cooling water pump is greater than or equal to the total power of the cooling water unit and the cooling water pump after frequency decreasing is further judged, if yes, the cooling water pump is controlled to operate at a low frequency, and if no, the operation frequency of the cooling water pump is controlled to be unchanged.

[0054] The application provides a linkage control method of a subway air and water system, and the step of controlling the operation number of a cooling tower of the subway air and water system and the operation frequency of a fan of the cooling tower, specifically comprising the following steps:

[0055] Obtaining the load side refrigerating capacity of the subway air and water system;

[0056] If the load-side refrigerating capacity is less than or equal to a preset refrigerating capacity, the number of operating cooling towers is controlled to be one, and if the load-side refrigerating capacity is greater than the preset refrigerating capacity, the number of operating cooling towers is controlled to be two;

[0057] After determining the number of operating cooling towers, a difference between the outlet water temperature of the cooling tower and the outdoor wet-bulb temperature is obtained;

[0058] When the difference between the outlet water temperature of the cooling tower and the outdoor wet-bulb temperature is greater than an upper limit value of a preset approximation degree, if the operating frequency of the fan of the cooling tower is greater than or equal to a fifth preset maximum frequency, the operating frequency of the fan of the cooling tower is controlled to be unchanged, and if the operating frequency of the fan of the cooling tower is less than the fifth preset maximum frequency, the fan of the cooling tower is controlled to operate at an increased frequency;

[0059] When the difference between the outlet water temperature of the cooling tower and the outdoor wet-bulb temperature is greater than or equal to a lower limit value of the preset approximation degree and less than or equal to the upper limit value of the preset approximation degree, the operating frequency of the fan of the cooling tower is controlled to be unchanged;

[0060] When the difference between the outlet water temperature of the cooling tower and the outdoor wet-bulb temperature is less than the lower limit value of the preset approximation degree, if the operating frequency of the fan of the cooling tower is less than or equal to a fifth preset minimum frequency, the fan of the cooling tower is controlled to be stopped, and if the operating frequency of the fan of the cooling tower is greater than the fifth preset minimum frequency, the fan of the cooling tower is controlled to operate at a decreased frequency.

[0061] According to the subway air and water system linkage control method provided by the application, when the subway air and water system operates in different operation modes, corresponding control strategies are executed, and the control strategies include the following steps:

[0062] Controlling the station hall / platform air handling unit of the subway air and water system to operate, the return air fan of the subway air and water system to perform air exhaust, the fresh air fan of the subway air and water system to perform air supply, and the water chiller, chilled water pump, cooling water pump and cooling tower of the subway air and water system to be closed;

[0063] Obtaining the indoor station hall / platform temperature;

[0064] When the indoor station hall / platform temperature is greater than a first preset upper limit temperature, it is determined whether the operating frequency of the fan of the station hall / platform air handling unit is greater than or equal to a first preset maximum frequency: if yes, the operating frequency of the fan of the station hall / platform air handling unit is controlled to be unchanged, and if no, the fan of the station hall / platform air handling unit is controlled to operate at an increased frequency;

[0065] When the indoor station hall / platform temperature is greater than or equal to the first preset temperature lower limit value and less than or equal to the first preset temperature upper limit value, the fan operation frequency of the station hall / platform air handling unit is controlled to be unchanged;

[0066] When the indoor station hall / platform temperature is less than the first preset temperature lower limit value, it is judged whether the fan operation frequency of the current station hall / platform air handling unit is less than or equal to the first preset minimum frequency: if yes, the fan of the station hall / platform air handling unit is controlled to stop, and if no, the fan of the station hall / platform air handling unit is controlled to operate at a reduced frequency.

[0067] According to the subway air-water system linkage control method provided by the application, the step of determining the current operation mode of the subway air-water system according to the outdoor air enthalpy value, the outdoor temperature and the indoor station hall / platform air enthalpy value specifically comprises:

[0068] When the outdoor air enthalpy value is greater than or equal to the indoor station hall / platform air enthalpy value, it is determined that the subway air-water system is operated to the small fresh air mode;

[0069] When the outdoor air enthalpy value is less than the indoor station hall / platform air enthalpy value, and the outdoor temperature is greater than the preset air supply temperature of the station hall / platform air handling unit of the subway air-water system, it is determined that the subway air-water system is operated to the full fresh air mode;

[0070] When the outdoor air enthalpy value is less than the indoor station hall / platform air enthalpy value, and the outdoor temperature is less than or equal to the preset air supply temperature of the station hall / platform air handling unit, it is determined that the subway air-water system is operated to the ventilation mode;

[0071] The air conditioning mode includes the small fresh air mode and the full fresh air mode.

[0072] The application further provides a subway air-water system linkage control device, comprising:

[0073] The first acquisition module is used for acquiring the indoor operation condition of the subway;

[0074] The second acquisition module is used for determining that the indoor station hall / platform air enthalpy value of the subway is in a normal operation condition, and acquiring the outdoor air enthalpy value, the outdoor temperature and the indoor station hall / platform air enthalpy value;

[0075] The determination module is used for determining the current operation mode of the subway air-water system according to the outdoor air enthalpy value, the outdoor temperature and the indoor station hall / platform air enthalpy value, wherein the operation mode includes an air conditioning mode and a ventilation mode;

[0076] The control module is used for controlling the subway air-water system to execute a corresponding control strategy when the subway air-water system is operated to different operation modes.

[0077] The application also provides a subway air and water system, comprising: the linkage control device of the subway air and water system, or the linkage control method of the subway air and water system is used when control is performed.

[0078] The linkage control method, device and system of the subway air and water system provided by the application, by obtaining the indoor operation condition of the subway, determining that the indoor subway is in normal operation condition, obtaining the outdoor air enthalpy, outdoor temperature and indoor station hall / platform air enthalpy, determining the current operation mode of the subway air and water system according to the outdoor air enthalpy, outdoor temperature and indoor station hall / platform air enthalpy, the operation mode including air conditioning mode and ventilation mode, controlling the subway air and water system to execute the corresponding control strategy when the subway air and water system is operated in different operation modes, thereby providing multiple operation control mode strategies, realizing the precise control of the subway air and water system, improving the operation energy efficiency and achieving the purpose of energy saving. BRIEF DESCRIPTION OF DRAWINGS

[0079] In order to more clearly illustrate the technical solutions in the application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0080] Figure 1 is a structural schematic diagram of the subway air and water system provided by the application;

[0081] Figure 2 is a structural schematic diagram of the subway air system provided by the application;

[0082] Figure 3 is a structural schematic diagram of the subway water system provided by the application;

[0083] Figure 4 is one of the flow schematic diagrams of the linkage control method of the subway air and water system provided by the application;

[0084] Figure 5 is the second flow schematic diagram of the linkage control method of the subway air and water system provided by the application;

[0085] Figure 6 is the flow schematic diagram of the air and water linkage control strategy provided by the application;

[0086] Figure 7 is the flow schematic diagram of the equipment room air handling unit control strategy provided by the application;

[0087] Figure 8 is the flow schematic diagram of the electric two-way valve control strategy of the living room fan coil provided by the application;

[0088] Figure 9 is a flowchart of a new fan control strategy provided by the present application;

[0089] Figure 10 is a flowchart of a chiller unit control strategy provided by the present application;

[0090] Figure 11 is a flowchart of a chilled water pump control strategy provided by the present application;

[0091] Figure 12 is a flowchart of a cooling water pump control strategy provided by the present application;

[0092] Figure 13 is a flowchart of a cooling tower control strategy provided by the present application;

[0093] Figure 14 is a flowchart of a ventilation mode control strategy provided by the present application;

[0094] Figure 15 is a structural schematic diagram of a linkage control device of a subway air and water system provided by the present application.

[0095] Reference signs:

[0096] 1: station hall; 2: platform; 3: equipment room; 4: living room;

[0097] 100: air system; 101: station hall / platform air handling unit;

[0098] 102: equipment room air handling unit; 103: living room fan coil;

[0099] 104: fresh air fan; 105: return air fan;

[0100] 200: water system; 201: chiller unit; 202: chilled water pump; 203: cooling water pump;

[0101] 204: cooling tower; 205: water distributor; 206: water collector;

[0102] 300: linkage control device; 301: first acquisition module; 302: second acquisition module;

[0103] 303: determination module; 304: control module. DETAILED DESCRIPTION

[0104] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0105] In the description of the embodiments of the present invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0106] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0107] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0108] The following is combined with Figures 1-15 This invention describes the linkage control method, device, and subway feng shui system of the present invention.

[0109] First, in conjunction with the appendix Figures 1-3 This paper provides a general overview of the subway feng shui system commonly used in this field. The subway feng shui system includes a ventilation system 100 and a water system 200. The ventilation system 100 mainly includes equipment such as: station hall / platform air handling units 101, equipment room air handling units 102, living quarters fan coil units 103, fresh air units 104, and return exhaust fans 105; the water system 200 mainly includes equipment such as: chiller units 201, chilled water pumps 202, cooling water pumps 203, and cooling towers 204.

[0110] The station hall / station platform air handling unit 101 is matched with a variable frequency fresh air fan and a variable frequency return air fan, and the equipment room air handling unit 102 is matched with a variable frequency return air fan. The fresh air fan 104 is used to introduce outdoor fresh air into the air mixing chamber of the air handling unit, and the return air fan 105 is used to introduce indoor return air into the air mixing chamber of the air handling unit and to discharge indoor air.

[0111] The air handling unit generally comprises components such as an air mixing chamber arranged in an air duct, a filter, a surface cooler, a heater and a fan. The air introduced into the air mixing chamber is filtered by the filter, and the clean air is sent to the surface cooler or the heater by the fan for cooling or heating to achieve a comfortable and suitable degree for people, and then is sent into the room. The fan of the air handling unit can be understood as a supply fan.

[0112] The subway water system adopts two cold water units 201, two chilled water pumps 202, two cooling water pumps 203 and two cooling towers 204 to realize water supply. The chilled water pump 202 and the cooling water pump 203 are connected to the cold water unit 201 in one-to-one connection for water circulation. The water system 200 is a two-pipe system, which is sent to the air supply terminal through the water collector and distributor; the large space station hall 1 and the station platform 2 in the air supply terminal adopt a variable frequency air handling unit, the equipment room 3 adopts a variable frequency air handling unit, and the living room 4 adopts a fan coil.

[0113] The working process generally comprises: the cold water unit 201 sends water to the cooling tower 204 for cooling, and then the cooled water is sent back to the cold water unit 201 through the cooling water pump 203, and then is sent to the first surface cooler of the station hall / station platform air handling unit 101, the second surface cooler of the equipment room air handling unit 102, the living room fan coil 103 and other equipment heat exchange devices through the water distributor 205, and then is sent to the cold water unit 201 through the water collector 206 and the chilled water pump 202, to form a cycle.

[0114] The subway air and water system linkage control method provided by the present application will be described below, referring to Figure 4 and Figure 5 The subway air and water system linkage control method provided by the present application mainly comprises:

[0115] S100, acquiring the indoor running condition of the subway.

[0116] Specifically, the subway station generally has a blockage / fire alarm, when it does not send a blockage / fire alarm signal, the subway station is generally in normal running condition, when it sends a blockage / fire alarm signal, the subway station is in abnormal running condition, therefore, the current running condition of the subway can be confirmed by dynamically monitoring the alarm information.

[0117] S200, determining that the subway indoor is in a normal operation condition, obtaining an outdoor air enthalpy, an outdoor temperature, and an indoor station hall / platform air enthalpy.

[0118] S300, determining a current operation mode of the subway air and water system according to the outdoor air enthalpy, the outdoor temperature, and the indoor station hall / platform air enthalpy, the operation mode including an air conditioning mode and a ventilation mode.

[0119] Specifically, the outdoor air enthalpy h0 and the outdoor temperature T0 and the like can be obtained through an outdoor weather station temperature and humidity sensor, and the indoor station hall / platform air enthalpy h N and the indoor station hall / platform temperature T N and the like can be obtained through an indoor station hall / platform temperature and humidity sensor.

[0120] When the outdoor air enthalpy h0 is greater than or equal to the indoor station hall / platform air enthalpy h N , it is determined that the subway air and water system is operated to a small fresh air mode; when the outdoor air enthalpy h0 is less than the indoor station hall / platform air enthalpy h N , and the outdoor temperature T0 is greater than a preset air supply temperature T AHUS of a station hall / platform air handling unit of the subway air and water system, it is determined that the subway air and water system is operated to a full fresh air mode; when the outdoor air enthalpy h0 is less than the indoor station hall / platform air enthalpy h N , and the outdoor temperature T0 is less than or equal to the preset air supply temperature T AHUS of the station hall / platform air handling unit, it is determined that the subway air and water system is operated to a ventilation mode; wherein the air conditioning mode includes: the small fresh air mode and the full fresh air mode, the small fresh air mode refers to a mode of conveying mixed air mixed by indoor return air and outdoor fresh air to the indoor, and the full fresh air mode refers to a mode of conveying outdoor fresh air to the indoor.

[0121] And when an abnormal operation condition signal such as a blockage / fire operation condition signal, a CO2 concentration exceeding a limit value, and the like is detected, the full fresh air mode can be started.

[0122] S400, controlling the subway air and water system to execute corresponding control strategies when the subway air and water system is operated to different operation modes.

[0123] Specifically, the control strategies include: air and water linkage control strategies, air system control strategies, and water system control strategies in the air conditioning mode, and control strategies in the ventilation mode. Wherein the air system control strategies at least include: equipment room air handling unit control strategies, electric two-way valve control strategies of a living room fan coil, fresh air fan control strategies, return and exhaust fan control strategies, and the like; the water system control strategies at least include: chiller unit control strategies, chilled water pump control strategies, cooling water pump control strategies, cooling tower control strategies, and the like.

[0124] The linkage control method of the subway air and water system provided by the embodiment of the application can realize independent or linkage control of the subway air system and the water system, has multiple operation modes and control strategies, realizes precise control of the subway air and water system, improves operation energy efficiency, achieves the purpose of energy saving, and has the characteristics of high control precision, high energy efficiency, energy saving, etc.

[0125] According to one embodiment of the application, referring to Figure 6 , the step of controlling the subway air and water system to run to different operation modes to execute corresponding control strategies includes: determining that when the subway air and water system runs to the air conditioning mode, the control strategy executed at least includes: air and water linkage control strategy, the air and water linkage control strategy mainly includes: acquiring the indoor station hall / platform temperature T N ; according to the indoor station hall / platform temperature T N , controlling the fan operation frequency F AHU and the operation number of the station hall / platform air handling unit of the subway air and water system; according to the indoor station hall / platform temperature T N , controlling the operation frequency F CHWP of the chilled water pump of the subway air and water system; according to the supply air temperature T AHU of the station hall / platform air handling unit, controlling the adjustment valve opening degree K COL of the first surface cooler of the station hall / platform air handling unit, so as to realize precise linkage control of the subway air and water system, improve operation energy efficiency, and achieve the purpose of energy saving.

[0126] Among them, the step of controlling the fan operation frequency F AHU and the operation number of the station hall / platform air handling unit of the subway air and water system according to the indoor station hall / platform temperature T N specifically includes: comparing the indoor station hall / platform temperature T N with the first preset temperature T NS , when the indoor station hall / platform temperature T N is greater than the first preset upper limit temperature T NSS , judging whether the fan operation frequency F AHU of the current station hall / platform air handling unit is greater than or equal to the first preset maximum frequency, for example, 50Hz: if yes, the fan operation frequency of the station hall / platform air handling unit is unchanged, F AHU =F AHU , if no, judging whether the fan operation number of the current station hall / platform air handling unit reaches the maximum value, that is, whether the fan is fully opened: if no, increasing the fan operation number of the station hall / platform air handling unit, for example, by 1, if yes, increasing the fan operation frequency of the station hall / platform air handling unit, for example, F AHU =F AHU +1, and performing frequency increase operation.

[0127] When the indoor station hall / platform temperature T N is greater than or equal to the first preset temperature lower limit value T NSX and less than or equal to the first preset temperature upper limit value T NSS , the fan operating frequency and operating number of the station hall / platform air handling unit are not changed.

[0128] When the indoor station hall / platform temperature T N is less than the first preset temperature lower limit value T NSX , it is judged whether the current station hall / platform air handling unit fan operating frequency F AHU is less than or equal to the first preset minimum frequency, for example 30Hz: if not, the station hall / platform air handling unit fan operating frequency is reduced, for example F AHU = F AHU -1, if yes, it is judged whether the current station hall / platform air handling unit fan operating number is greater than 1: if yes, the station hall / platform air handling unit fan operating number is reduced, for example by 1, if not, the station hall / platform air handling unit fan operating frequency F AHU is not changed, and the next step is executed: according to the indoor station hall / platform temperature T N , the step of controlling the operating frequency F CHWP of the subway chilled water pump is executed.

[0129] The step of controlling the operating frequency F N of the subway chilled water pump according to the indoor station hall / platform temperature T CHWP , specifically includes: when the indoor station hall / platform temperature T N is greater than the first preset temperature upper limit value T NSS , it is judged whether the current chilled water pump operating frequency F CHWP is greater than or equal to the second preset maximum frequency, for example 50Hz: if yes, the chilled water pump operating frequency is not changed, F CHWP = F CHWP , if not, the chilled water pump operating frequency is increased, for example F CHWP = F CHWP +1;

[0130] When the indoor station hall / platform temperature T N is greater than or equal to the first preset temperature lower limit value T NSX and less than or equal to the first preset temperature upper limit value T NSS , the chilled water pump operating frequency is not changed, F CHWP = F CHWP ;

[0131] When the indoor station hall / platform temperature T N is less than the first preset temperature lower limit value T NSXWhen the current chilled water pump's running frequency F CHWP is less than or equal to the second preset minimum frequency, for example, 30 Hz, and the subway air-water system's collecting and distributing device pressure difference is less than or equal to the preset pressure difference value: if yes, the chilled water pump's running frequency is unchanged, F CHWP =F CHWP ; if no, it is judged whether the subway equipment room indoor temperature T NFi is greater than the second preset temperature upper limit value T NFiSS , and the subway air-water system's equipment room air handling unit's second cooling coil's regulating valve opening K COLFi is the second preset maximum opening value, for example, 100% full opening: if yes, the chilled water pump's running frequency is unchanged, F CHWP =F CHWP ; if no, the chilled water pump's running frequency is reduced, for example, F CHWP =F CHWP -1.

[0132] When the indoor station hall / platform temperature T N is less than the first preset temperature lower limit value T NSX , the chilled water pump's running frequency F CHWP =F CHWP is unchanged, the next step is entered, and the step of controlling the first cooling coil's regulating valve opening K AHU of the station hall / platform air handling unit according to the station hall / platform air handling unit's supply air temperature T COL is performed.

[0133] The step of controlling the first cooling coil's regulating valve opening K AHU of the station hall / platform air handling unit according to the station hall / platform air handling unit's supply air temperature T COL specifically includes: comparing the station hall / platform air handling unit's supply air temperature T AHU with the preset supply air temperature T AHUS ; when the station hall / platform air handling unit's supply air temperature T AHU is greater than the preset supply air temperature upper limit value T AHUSS , it is judged whether the current first cooling coil's regulating valve opening K COL is greater than or equal to the first preset maximum opening value, for example, 100% full opening: if yes, the first cooling coil's regulating valve opening is unchanged, K COL =K COL ; if no, the first cooling coil's regulating valve opening is increased, for example, K COL =K COL +1%.

[0134] When the station hall / platform air handling unit's supply air temperature T AHU is less than or equal to the preset supply air temperature lower limit value TAHUSX and less than or equal to a preset supply air temperature upper limit value T AHUSS , the control of the regulating valve opening degree of the first surface cooler is unchanged, K COL = K COL ;

[0135] When the supply air temperature T AHU of the station hall / station platform air handling unit is less than a preset supply air temperature lower limit value T AHUSX , it is determined whether the current regulating valve opening degree K COL of the first surface cooler is less than or equal to a first preset minimum opening degree value, for example, 15% of full opening: if yes, the control of the regulating valve opening degree of the first surface cooler is unchanged, K COL = K COL , if no, the regulating valve opening degree of the first surface cooler is reduced, for example, K COL = K COL -1%.

[0136] Therefore, the air-water linkage control strategy provided by the embodiment of the present application can preferentially adjust the running frequency and number of the fan of the station hall / station platform air handling unit according to the indoor environment temperature PID feedback, then adjust the running frequency of the chilled water pump, and finally adjust the regulating valve opening degree of the first surface cooler according to the supply air temperature state point PID.

[0137] It is worth mentioning that the air-water linkage control strategy adopts a three-stage control sequence of fan frequency conversion→pump frequency conversion→electric regulating valve adjustment, instead of a three-stage control sequence of fan frequency conversion→electric regulating valve adjustment→pump frequency conversion, so that the hydraulic loss caused by the regulating valve opening degree can be fully reduced, and the pump frequency conversion adjustment and energy consumption reduction are facilitated. The chilled water pump is controlled by the air-water linkage control, instead of constant temperature difference or constant pressure difference control, so that precise control is achieved, and the purpose of energy saving and energy consumption reduction is achieved.

[0138] According to an embodiment of the present application, when the subway air-water system is determined to be running in the air conditioning mode, the control strategy executed further includes at least one of the following:

[0139] The control strategy of the equipment room air handling unit of the subway air-water system: the running frequency and number of the fan of the equipment room air handling unit of the subway air-water system and the regulating valve opening degree of the second surface cooler of the equipment room air handling unit are controlled;

[0140] The control strategy of the electric two-way valve of the fan coil of the living room of the subway air-water system: the electric two-way valve opening degree of the fan coil of the living room of the subway air-water system is controlled;

[0141] The control strategy of the fresh air fan of the subway air-water system: the running frequency of the fresh air fan of the subway air-water system is controlled;

[0142] The control strategy of the return and exhaust air fan of the subway air-water system: the running frequency of the return and exhaust air fan of the subway air-water system is controlled;

[0143] Chiller control strategy: controlling the running number of chiller of the air conditioning system of the subway;

[0144] Chilled water pump control strategy: controlling the running frequency of chilled water pump of the air conditioning system of the subway;

[0145] Cooling water pump control strategy: controlling the running frequency of cooling water pump of the air conditioning system of the subway;

[0146] Cooling tower control strategy: controlling the running number of cooling tower of the air conditioning system of the subway and the running frequency of fan of cooling tower.

[0147] According to one embodiment of the present application, referring to Figure 7 , the equipment room air handling unit control strategy: controlling the running frequency of fan, the running number of equipment room air handling unit and the opening degree of regulating valve of the second cooling coil of equipment room air handling unit of the air conditioning system of the subway, specifically includes: NFi obtaining the indoor temperature T NFi of equipment room and comparing it with the second preset temperature T NFiS ; when the indoor temperature T NFi of equipment room is greater than the upper limit value T NFiSS of the second preset temperature, judging whether the current running frequency F AHUF of fan of equipment room air handling unit is greater than or equal to the third preset maximum frequency, for example, 50 Hz: if yes, controlling the running frequency of fan of equipment room air handling unit unchanged, F AHUF =F AHUF , if no, judging whether the running number of fan of equipment room air handling unit reaches the maximum value, i.e. whether the fan is fully opened: if no, increasing the running number of fan of equipment room air handling unit, for example, adding 1 fan, if yes, increasing the running frequency of fan of equipment room air handling unit, for example, F AHUF =F AHUF +1;

[0148] when the indoor temperature T NFi of equipment room is greater than or equal to the lower limit value T NFiSX of the second preset temperature and less than or equal to the upper limit value T NFiSS of the second preset temperature, controlling the running frequency and running number of fan of equipment room air handling unit unchanged;

[0149] when the indoor temperature T NFi of equipment room is less than the lower limit value T NFiSX of the second preset temperature, judging whether the current running frequency F AHUFwhether less than or equal to a third preset minimum frequency, for example, 30 Hz: if not, reduce the fan operating frequency of the equipment room air handling unit, for example, F AHUF =F AHUF -1, if yes, determine whether the current number of fans operating in the equipment room air handling unit is greater than 1: if yes, reduce the number of fans operating in the equipment room air handling unit, for example, by 1, if not, control the fan operating frequency of the equipment room air handling unit unchanged, and proceed to the next step of adjusting the opening degree K COLFi of the second cooling coil. Wherein, T NFi is the indoor temperature of the i-th equipment room, and correspondingly, K COLFi is the opening degree of the second cooling coil of the i-th equipment room air handling unit.

[0150] Wherein, the step of adjusting the opening degree K COLFi of the second cooling coil is specifically: when the indoor temperature T NFi of the equipment room is greater than a second preset upper temperature limit T NFiSS , determine whether the current opening degree K COLFi of the second cooling coil is greater than or equal to a second preset maximum opening degree, for example, full opening 100%: if yes, control the opening degree K COLFi of the second cooling coil unchanged, if not, increase the opening degree of the second cooling coil, for example, K COLFi =K COLFi +1%;

[0151] When the indoor temperature T NFi of the equipment room is greater than or equal to a second preset lower temperature limit T NFiSX and less than or equal to a second preset upper temperature limit T NFiSS , control the opening degree of the second cooling coil unchanged, K COLFi =K COLFi .

[0152] When the indoor temperature T NFi of the equipment room is less than a second preset lower temperature limit T NFiSX , determine whether the current opening degree K COLFi of the second cooling coil is less than or equal to a second preset minimum opening degree, for example, 15% of full opening: if yes, control the opening degree of the second cooling coil unchanged, K COLFi =K COLFi , if not, reduce the opening degree of the second cooling coil, for example, K COLFi =K COLFi -1%.

[0153] The device room air handling unit strategy provided by the embodiment of the present application firstly adjusts the fan frequency and quantity according to the indoor environment temperature PID feedback, and then adjusts the second cooling valve opening degree. That is, the device room air handling unit adopts a resistance reduction control strategy: the system is designed for a variable frequency fan, and the fan variable frequency control scheme is used to control the indoor temperature, and then the electric regulating valve is controlled, instead of only adjusting the electric regulating valve opening degree, so that the water system resistance value is close to the design condition, precise control is realized, energy consumption is reduced, and the energy saving purpose is achieved.

[0154] According to one embodiment of the present application, referring to Figure 8 , the electric two-way valve control strategy of the living room fan coil: the steps of controlling the electric two-way valve opening degree of the living room fan coil of the subway air and water system, specifically include: obtaining the indoor temperature T NRi of the living room, T NRi is the indoor environment temperature of the i-th living room, T NRiSS is the upper limit value of the living room indoor set temperature, T NRiSX is the lower limit value of the living room indoor set temperature, and the obtained living room indoor temperature is compared with the set temperature T NRiS .

[0155] When T NRi is greater than T NRiSS , the electric two-way valve opening degree is increased, the fan coil water flow is increased, and the indoor temperature is reduced, for example, the electric two-way valve opening degree is 100% fully open.

[0156] When T NRi is less than or equal to T NRiSS , it is further judged whether T NRi is less than T NRiSX , if yes, the electric two-way valve is closed, the fan coil water flow is reduced, and the indoor temperature is increased, otherwise, the current electric two-way valve opening state is maintained unchanged.

[0157] The electric two-way valve control strategy of the living room fan coil provided by the embodiment of the present application can dynamically adjust the electric two-way valve opening degree according to the indoor temperature, adjust the heat exchange water flow, thereby realizing the precise adjustment of the indoor temperature of the living room, making it in a dynamic stable state, and achieving the energy saving purpose.

[0158] According to one embodiment of the present application, referring to Figure 9 , the fresh air fan control strategy: the steps of controlling the operating frequency of the fresh air fan of the subway air and water system, specifically include:

[0159] Judging whether the current operating mode is a small fresh air mode or a full fresh air mode;

[0160] When in mini fresh air mode, the indoor CO2 concentration ρ is obtained through the indoor station hall / platform CO2 sensor. CO2 When the concentration is greater than 1200 ppm, the fresh air unit frequency F is determined. FAF Whether the frequency is greater than or equal to 50Hz, i.e., whether it is operating at high frequency, if the condition is met, the fresh air mode is triggered; otherwise, the operating frequency of the fresh air unit increases, for example, F. FAF =F FAF +1; When the concentration is less than or equal to 1200ppm, determine the fresh air unit frequency F. FAF Is the frequency less than or equal to 30Hz, i.e., is it operating at low frequency? If the condition is met, the operating frequency of the fresh air unit remains unchanged, i.e., F... FAF =F FAF Conversely, the operating frequency of the fresh air system decreases, for example, F FAF =F FAF -1.

[0161] The fresh air unit control strategy provided in this embodiment of the invention can adjust the frequency of the fresh air unit according to the indoor CO2 concentration, so that the operating frequency of the fresh air unit is positively correlated with the CO2 concentration, thereby maintaining the indoor CO2 concentration, achieving precise control, and realizing energy saving. Moreover, the lower the frequency, the more energy-efficient it is.

[0162] According to one embodiment of the present invention, the exhaust fan control strategy is as follows: by controlling the operating frequency of the exhaust fan in the subway ventilation system, the exhaust air volume is controlled, thereby achieving indoor air quality regulation.

[0163] According to one embodiment of the present invention, referring to Figure 10 As shown, the chiller unit control strategy involves controlling the number of operating chiller units in the subway ventilation system, specifically including the following steps:

[0164] Obtain the temperature difference T between the inlet and outlet water of the chilled water pump CHWP ;

[0165] Detecting the chilled water pump flow rate L CHWP ;

[0166] Based on the temperature difference T between the inlet and outlet water of the chilled water pump CHWP and water flow rate L CHWP The cooling capacity Q on the load side can be calculated. CHWP Q CHWP =L CHWP ×T CHWP ×1.163; The load side includes air handling units in the station hall / platform, air handling units in the equipment room, and fan coil units in the living quarters.

[0167] The cooling capacity Q on the load side CHWP With the rated cooling capacity Q of a single chiller unit LS Compare:

[0168] When Q CHWP ≤Q LS ×5%×2, the current chiller unit is all stopped, and the running number M=0;

[0169] When Q LS ×5%×2<Q CHWP ≤Q LS ×40%×2, if the current chiller unit running number M=1, the chiller unit still runs 1, if the current chiller unit running number is not 1, that is, 2, the load side refrigeration amount is continuously detected, the detection number t=6, and the detection interval is 10 minutes, when reaching 1 hour in this working condition, the chiller unit running number is switched to 1, the chiller unit with long running time is stopped according to the chiller unit running time, and the corresponding chilled water pump and cooling water pump are sent a stop signal of 1 unit;

[0170] When Q LS ×40%×2<Q CHWP ≤Q LS ×50%×2, if the current chiller unit running number M=2, the chiller unit still runs 2, if the current chiller unit running number is not 2, that is, 1, the load side refrigeration amount is continuously detected, the detection number t=6, and the detection interval is 10 minutes, when reaching 1 hour in this working condition, the chiller unit running number is switched to 2, and the chilled water pump and cooling water pump matched with the chiller unit to be started are sent a start signal;

[0171] When Q LS ×50%×2<Q CHWP , the chiller unit running number is switched to 2, that is, M=2.

[0172] The chiller unit control strategy provided by the embodiment of the application can control the running number according to the load side refrigeration amount, realize precise control of water supply, and in the control process, the switching interval of the chiller unit running number can be prolonged through the multiple interval detection mode, so that the chiller unit is prevented from being frequently started and stopped, and the purpose of protecting the chiller unit is achieved.

[0173] According to one embodiment of the application, referring to Figure 11 , the chilled water pump control strategy: the step of controlling the running frequency of the chilled water pump of the subway air-water system, specifically includes:

[0174] The running number of the chiller unit of the subway air-water system is acquired, and the running number of the chilled water pump is controlled to correspond to the chiller unit one by one;

[0175] When the running number of the chilled water pump needs to be added by 1, the running frequency F CHWP of the chilled water pump is controlled to meet F CHWP ×0.8 and FCHWP ≥30Hz;

[0176] When the number of operating chilled water pumps needs to be reduced by one, control the operating frequency F of the chilled water pumps. CHWP =F CHWP ×2 and F CHWP ≤45Hz;

[0177] When the number of chilled water pumps does not need to be increased or decreased, the operating frequency of the chilled water pumps should be kept constant. CHWP =F CHWP .

[0178] The above frequency calculation values ​​can be adjusted and set according to the on-site working conditions.

[0179] According to one embodiment of the present invention, referring to Figure 12 As shown, the cooling water pump control strategy involves controlling the operating frequency of the cooling water pumps in the subway ventilation system. Specifically, this includes: obtaining the number of operating chiller units; ensuring a one-to-one correspondence between the number of operating cooling water pumps and the chiller units; and when the number of operating cooling water pumps increases by one, decreasing the operating frequency of the cooling water pumps, ensuring it remains greater than or equal to a fourth preset minimum frequency. For example, the operating frequency of the cooling water pumps is F... CWP =F CWP ×0.8 and F CWP ≥30Hz;

[0180] When the number of operating cooling water pumps decreases by one, the operating frequency of the cooling water pump is increased, but not less than or equal to the fourth preset maximum frequency. For example, the operating frequency of the cooling water pump is F. CWP =F CWP ×2 and F CWP ≤50Hz;

[0181] When the number of operating cooling water pumps remains constant, obtain the inlet and outlet water temperature difference T of the cooling water pumps. CPW ;

[0182] When the temperature difference between the inlet and outlet water of the cooling water pump is T CPW Greater than the preset upper limit of temperature difference T CPWS If the operating frequency of the cooling water pump is greater than or equal to the fourth preset maximum frequency, the operating frequency of the cooling water pump will be kept constant, i.e., F. CWP =F CWP If the operating frequency of the cooling water pump is less than the fourth preset maximum frequency, then it is further determined whether the total power of the current chiller unit and cooling water pump is greater than or equal to the total power of the chiller unit and cooling water pump after the frequency increase, that is, whether the total power of the chiller unit and cooling water pump decreases after the frequency increase, i.e., whether P is satisfied. CWP1 +P CH1 ≥P CPW2 +P CH2 P CWP1P is the current power of the cooling water pump CH1 P is the current power of the water chiller CPW2 P is the predicted power of the cooling water pump after frequency increase CH2 P is the predicted power of the water chiller after frequency increase, if the condition P CWP +F is met, the cooling water pump is controlled to operate at a frequency of F CWP +1, if not, that is, the total power increases after frequency increase, the operating frequency of the cooling water pump is controlled to be unchanged, that is, F CWP =F CWP .

[0183] When the temperature difference T CPW between the inlet and outlet water of the cooling water pump is greater than or equal to a preset lower limit value T CWPX and less than or equal to a preset upper limit value T CPWS , the operating frequency of the cooling water pump is controlled to be unchanged, that is, F CWP =F CWP .

[0184] When the temperature difference T CPW between the inlet and outlet water of the cooling water pump is less than the preset lower limit value T CWPX , if the operating frequency of the cooling water pump is less than or equal to a fourth preset minimum frequency and the dry pipe pressure difference value of the cooling water pump is less than or equal to a preset safety protection value, the operating frequency of the cooling water pump is controlled to be unchanged, that is, F CWP =F CWP , otherwise, it is further judged whether the total power of the water chiller and the cooling water pump after frequency decrease is greater than or equal to the total power of the water chiller and the cooling water pump before frequency decrease, that is, whether the total power of the water chiller and the cooling water pump after frequency decrease is reduced, that is, whether the condition P CWP1 +P CH1 ≥P CPW2 +P CH2 is met, P CWP1 is the current power of the cooling water pump, P CH1 is the current power of the water chiller, P CPW2 is the predicted power of the cooling water pump after frequency decrease, P CH2 is the predicted power of the water chiller after frequency decrease, if the condition P CWP +F is met, the cooling water pump is controlled to operate at a frequency of F CWP -1, if not, that is, the total power increases after frequency decrease, the operating frequency of the cooling water pump is controlled to be unchanged, that is, F CWP =F CWP .

[0185] The cooling water pump control strategy provided by the embodiment of the application adopts the optimal flow control technology, compared with the traditional constant temperature difference or constant pressure difference control mode, the control strategy of the application dynamically calculates the total power prediction value of the cooling water pump and the water chiller after frequency conversion each time before frequency conversion, and compares with the current value, adopts the optimal energy consumption control, and achieves the purpose of precise energy-saving control.

[0186] According to one embodiment of the present invention, referring to Figure 13 As shown, the cooling tower control strategy involves controlling the number of operating cooling towers and the operating frequency of the cooling tower fans in the subway ventilation system. Specifically, this includes: obtaining the load-side cooling capacity Q of the subway ventilation system. CHWP For details, please refer to the above; if the cooling capacity on the load side is less than or equal to the preset cooling capacity, for example, 20%, the number of cooling towers in operation is controlled to be 1; if the cooling capacity on the load side is greater than the preset cooling capacity, the number of cooling towers in operation is controlled to be 2.

[0187] After determining the number of cooling towers in operation, obtain the outlet water temperature T of the cooling towers. CWPH With outdoor wet-bulb temperature T WO The difference;

[0188] The outlet water temperature T of the cooling tower CWPH With outdoor wet-bulb temperature T WO The difference between the preset approximation T B Comparison: When the outlet water temperature T of the cooling tower CWPH The difference T between the outdoor wet-bulb temperature and the outdoor temperature WO Greater than the preset upper limit of approximation T BS If the cooling tower fan operates at frequency F TW If the operating frequency of the cooling tower fan is greater than or equal to the fifth preset maximum frequency, such as 50Hz, the operating frequency of the cooling tower fan will remain unchanged. TW If the frequency is less than the fifth preset maximum frequency, the cooling tower fan will operate at an increased frequency, for example, F. TW =F TW +1;

[0189] When the outlet water temperature T of the cooling tower CWPH With outdoor wet-bulb temperature T WO The difference is greater than or equal to the preset lower limit of approximation T. BX And less than or equal to the preset upper limit value T of approximation degree BS At that time, the operating frequency of the cooling tower fan remains unchanged, i.e., F TW =F TW ;

[0190] When the outlet water temperature T of the cooling tower CWPH With outdoor wet-bulb temperature T WO The difference is less than the preset approximation lower limit T. BX At that time, if the operating frequency F of the cooling tower fan is... TW If the operating frequency is less than or equal to the fifth preset minimum frequency, such as 30Hz, the cooling tower fan will stop. If the cooling tower fan operating frequency is greater than the fifth preset minimum frequency, the cooling tower fan will operate at a reduced frequency, such as F. TW =F TW -1.

[0191] The cooling tower control strategy provided by the embodiment of the present application can determine the number of running towers according to the load-side refrigeration capacity, adopt the frequency adjustment control scheme, and when the cooling tower adopts the full opening operation mode, compared with the traditional one-to-one opening mode of the main machine and the cooling tower, the present application can greatly reduce the fan power of the cooling tower under the premise of meeting the same heat dissipation capacity when operating at partial load, and achieve the purpose of energy saving.

[0192] According to one embodiment of the present application, referring to Figure 14 the step of executing the corresponding control strategy when the subway air and water system is operated to different operation modes further comprises: determining that the control strategy executed when the subway air and water system is operated to the ventilation mode mainly comprises: controlling the station hall / platform air handling unit of the subway air and water system to operate, the return air fan of the subway air and water system to exhaust air, the fresh air fan of the subway air and water system to supply air, and the water chiller, the chilled water pump, the cooling water pump and the cooling tower of the subway air and water system to be closed; obtaining the indoor station hall / platform temperature;

[0193] comparing the indoor station hall / platform temperature T N with the first preset temperature T NS ; when the indoor station hall / platform temperature T N is greater than the first preset upper limit temperature T NSS , judging whether the fan operating frequency F AHU of the station hall / platform air handling unit is greater than or equal to the first preset maximum frequency, for example, 50Hz: if yes, controlling the fan operating frequency of the station hall / platform air handling unit to be unchanged, i.e., F AHU =F AHU , if no, controlling the fan of the station hall / platform air handling unit to operate at an increased frequency, for example, F AHU =F AHU +1;

[0194] when the indoor station hall / platform temperature T N is greater than or equal to the first preset lower limit temperature T NSX and less than or equal to the first preset upper limit temperature T NSS , controlling the fan operating frequency of the station hall / platform air handling unit to be unchanged, i.e., F AHU =F AHU ;

[0195] when the indoor station hall / platform temperature T N is less than the first preset lower limit temperature T NSX , judging the current fan operating frequency F AHUwhether less than or equal to a first preset minimum frequency, for example, 30 Hz: if yes, controlling the fan of the station hall / platform air handling unit to stop, and if no, controlling the fan of the station hall / platform air handling unit to operate at a reduced frequency, for example, F AHU =F AHU -1.

[0196] In addition, the return air fan operating frequency can be consistent with the fan operating frequency of the station hall / platform air handling unit.

[0197] In addition, when an abnormal operation of the blockage / fire operating condition signal is detected, a fresh air mode can be started, and the exhaust air fan is turned on to ventilate.

[0198] It can be understood that all the preset values and adjustment values mentioned in the present application can be set according to actual operating conditions, and are not particularly limited.

[0199] The linkage control device of the subway air and water system provided by the present application is described below, and the linkage control device of the subway air and water system described below can be correspondingly referred to the linkage control method of the subway air and water system described above.

[0200] According to one embodiment of the present application, referring to Figure 15 The present application also provides a linkage control device 300 of a subway air and water system, mainly comprising: a first acquisition module 301, a second acquisition module 302, a determination module 303, and a control module 304. The first acquisition module 301 is used to acquire the indoor operating condition of the subway; the second acquisition module 302 is used to determine that the indoor operating condition of the subway is in a normal operating condition, and to acquire the outdoor air enthalpy value, the outdoor temperature, and the indoor station hall / platform air enthalpy value; the determination module 303 is used to determine the current operating mode of the subway air and water system according to the outdoor air enthalpy value, the outdoor temperature, and the indoor station hall / platform air enthalpy value, and the operating mode includes an air conditioning mode and a ventilation mode; and the control module 304 is used to control the subway air and water system to execute the corresponding control strategy when operating in different operating modes.

[0201] The linkage control device of the subway air and water system provided by the present application embodiment can realize independent or linkage control of the subway air system and the water system, has multiple operating modes and control strategies, realizes precise control of the subway air and water system, improves operating energy efficiency, achieves the purpose of energy saving, and has the characteristics of high control precision, high energy efficiency, energy saving, etc.

[0202] In addition, the present application also provides a subway air and water system, which comprises: the linkage control device of the subway air and water system of the above-mentioned embodiments, or executes the linkage control method of the subway air and water system of the above-mentioned embodiments when controlling.

[0203] Since the subway air and water system of the embodiment of the present application comprises the linkage control device or method of the subway air and water system of the above-mentioned embodiment, it has all the technical effects of the linkage control device or method of the subway air and water system of the above-mentioned embodiment, which will not be described here.

[0204] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A linkage control method of a subway wind-water system, characterized by, The method comprises the following steps: acquiring a subway indoor operation condition; determining that the subway is in a normal operation condition, and acquiring an outdoor air enthalpy value, an outdoor temperature, and an indoor station hall / platform air enthalpy value; determining a current operation mode of a subway air and water system according to the outdoor air enthalpy value, the outdoor temperature, and the indoor station hall / platform air enthalpy value, wherein the operation mode comprises an air conditioning mode and a ventilation mode; controlling the subway air and water system to execute a corresponding control strategy when the subway air and water system is operated in different operation modes; the step of controlling the subway air and water system to execute a corresponding control strategy when the subway air and water system is operated in different operation modes comprises the following steps: acquiring an indoor station hall / platform temperature; controlling a fan operation frequency and an operation number of a station hall / platform air handling unit of the subway air and water system according to the indoor station hall / platform temperature; controlling an operation frequency of a chilled water pump of the subway air and water system according to the indoor station hall / platform temperature; controlling an opening degree of a regulating valve of a first surface cooler of the station hall / platform air handling unit according to a supply air temperature of the station hall / platform air handling unit; the step of controlling the fan operation frequency and the operation number of the station hall / platform air handling unit of the subway air and water system according to the indoor station hall / platform temperature comprises the following steps: when the indoor station hall / platform temperature is greater than a first preset upper temperature limit value, determining whether the fan operation frequency of the station hall / platform air handling unit is greater than or equal to a first preset maximum frequency; if yes, the fan operation frequency of the station hall / platform air handling unit is unchanged; if no, determining whether the fan operation number of the station hall / platform air handling unit reaches a maximum value; if no, the fan operation number of the station hall / platform air handling unit is increased; if yes, the fan operation frequency of the station hall / platform air handling unit is increased; when the indoor station hall / platform temperature is greater than or equal to a first preset lower temperature limit value and less than or equal to the first preset upper temperature limit value, the fan operation frequency and the operation number of the station hall / platform air handling unit are unchanged; when the indoor station hall / platform temperature is less than the first preset lower temperature limit value, determining whether the fan operation frequency of the station hall / platform air handling unit is less than or equal to a first preset minimum frequency; if no, the fan operation frequency of the station hall / platform air handling unit is decreased; if yes, determining whether the fan operation number of the station hall / platform air handling unit is greater than 1; if yes, the fan operation number of the station hall / platform air handling unit is decreased; if no, the fan operation frequency of the station hall / platform air handling unit is unchanged, and the step of controlling the operation frequency of the chilled water pump of the subway air and water system according to the indoor station hall / platform temperature is executed.

2. The linkage control method of the subway wind-water system according to claim 1, characterized by, the step of controlling the operation frequency of the chilled water pump of the subway air and water system according to the indoor station hall / platform temperature comprises the following steps: When the indoor station hall / station temperature is greater than the first preset temperature upper limit value, it is determined whether the current running frequency of the chilled water pump is greater than or equal to the second preset maximum frequency; if yes, the running frequency of the chilled water pump is unchanged, and if no, the running frequency of the chilled water pump is increased; When the indoor station hall / station temperature is greater than or equal to the first preset temperature lower limit value and less than or equal to the first preset temperature upper limit value, the running frequency of the chilled water pump is unchanged; When the indoor station hall / station temperature is less than the first preset temperature lower limit value, it is determined whether the current running frequency of the chilled water pump is less than or equal to the second preset minimum frequency, and whether the differential pressure of the water collector and distributor of the subway air conditioning system is less than or equal to the preset differential pressure value; if yes, the running frequency of the chilled water pump is unchanged, and if no, it is determined whether the indoor temperature of the subway equipment room is greater than the second preset temperature upper limit value, and whether the adjusting valve opening degree of the second cooling coil of the equipment room air handling unit of the subway air conditioning system is the second preset maximum opening degree value; if yes, the running frequency of the chilled water pump is unchanged, and if no, the running frequency of the chilled water pump is decreased; When the indoor station hall / station temperature is less than the first preset temperature lower limit value and the running frequency of the chilled water pump is unchanged, the step of controlling the adjusting valve opening degree of the first cooling coil of the station hall / station air handling unit according to the supply air temperature of the station hall / station air handling unit is performed.

3. The linkage control method of the subway wind-water system according to claim 2, characterized by, The step of controlling the adjusting valve opening degree of the first cooling coil of the station hall / station air handling unit according to the supply air temperature of the station hall / station air handling unit specifically includes: When the supply air temperature of the station hall / station air handling unit is greater than the preset supply air temperature upper limit value, it is determined whether the current adjusting valve opening degree of the first cooling coil is greater than or equal to the first preset maximum opening degree value; if yes, the adjusting valve opening degree of the first cooling coil is unchanged, and if no, the adjusting valve opening degree of the first cooling coil is increased; When the supply air temperature of the station hall / station air handling unit is greater than or equal to the preset supply air temperature lower limit value and less than or equal to the preset supply air temperature upper limit value, the adjusting valve opening degree of the first cooling coil is unchanged; When the supply air temperature of the station hall / station air handling unit is less than the preset supply air temperature lower limit value, it is determined whether the current adjusting valve opening degree of the first cooling coil is less than or equal to the first preset minimum opening degree value; if yes, the adjusting valve opening degree of the first cooling coil is unchanged, and if no, the adjusting valve opening degree of the first cooling coil is decreased.

4. The linkage control method of the subway wind-water system according to claim 1, characterized by, When the subway air conditioning system is determined to be running in the air conditioning mode, the control strategy performed further includes at least one of the following: Controlling the running frequency, running number of the fan of the equipment room air handling unit of the subway air conditioning system, and the adjusting valve opening degree of the second cooling coil of the equipment room air handling unit; Controlling the electric two-way valve opening degree of the fan coil of the living room of the subway air conditioning system; Controlling the running frequency of the fresh air fan of the subway air conditioning system; Controlling the running frequency of the return air fan of the subway air conditioning system; Controlling the running number of the water chiller of the subway air conditioning system; Controlling the running frequency of the chilled water pump of the subway air conditioning system; Controlling the running frequency of a cooling water pump of the subway air-water system; Controlling the running number of a cooling tower of the subway air-water system and the running frequency of a fan of the cooling tower.

5. The linkage control method of the subway wind-water system according to claim 4, characterized by, The step of controlling the running frequency, running number of a fan of the equipment room air handling unit of the subway air-water system and the adjusting valve opening degree of a second cooling coil of the equipment room air handling unit, specifically comprises: Obtaining the indoor temperature of the subway equipment room; When the indoor temperature of the equipment room is greater than the second preset upper temperature limit value, judging whether the current running frequency of the fan of the equipment room air handling unit is greater than or equal to the third preset maximum frequency: if yes, controlling the running frequency of the fan of the equipment room air handling unit unchanged, if no, judging whether the current running number of the fan of the equipment room air handling unit reaches the maximum value: if no, increasing the running number of the fan of the equipment room air handling unit, if yes, increasing the running frequency of the fan of the equipment room air handling unit; When the indoor temperature of the equipment room is greater than or equal to the second preset lower temperature limit value and less than or equal to the second preset upper temperature limit value, controlling the running frequency and running number of the fan of the equipment room air handling unit unchanged; When the indoor temperature of the equipment room is less than the second preset lower temperature limit value, judging whether the current running frequency of the fan of the equipment room air handling unit is less than or equal to the third preset minimum frequency: if no, decreasing the running frequency of the fan of the equipment room air handling unit, if yes, judging whether the current running number of the fan of the equipment room air handling unit is greater than 1: if yes, decreasing the running number of the fan of the equipment room air handling unit, if no, controlling the running frequency of the fan of the equipment room air handling unit unchanged, and executing the step of adjusting the valve opening degree of the second cooling coil.

6. The linkage control method of the subway wind-water system according to claim 5, wherein The step of adjusting the valve opening degree of the second cooling coil, specifically comprises: When the indoor temperature of the equipment room is greater than the second preset upper temperature limit value, judging whether the current adjusting valve opening degree of the second cooling coil is greater than or equal to the second preset maximum opening degree value: if yes, controlling the adjusting valve opening degree of the second cooling coil unchanged, if no, increasing the adjusting valve opening degree of the second cooling coil; When the indoor temperature of the equipment room is greater than or equal to the second preset lower temperature limit value and less than or equal to the second preset upper temperature limit value, controlling the adjusting valve opening degree of the second cooling coil unchanged; When the indoor temperature of the equipment room is less than the second preset lower temperature limit value, judging whether the current adjusting valve opening degree of the second cooling coil is less than or equal to the second preset minimum opening degree value: if yes, controlling the adjusting valve opening degree of the second cooling coil unchanged, if no, decreasing the adjusting valve opening degree of the second cooling coil.

7. The linkage control method of the subway wind-water system according to claim 4, wherein The step of controlling the running frequency of the cooling water pump of the subway air-water system, specifically comprises: Obtaining the running number of a cooling water pump of the subway air-water system, controlling the running number of the cooling water pump corresponding to the cooling water pump; When the running number of the cooling water pump is one more, controlling the running frequency of the cooling water pump to decrease and be greater than or equal to the fourth preset minimum frequency; When the number of operating cooling water pumps is reduced by one, the operating frequency of the cooling water pump is controlled to increase and be less than or equal to a fourth preset maximum frequency; When the number of operating cooling water pumps is unchanged, the temperature difference between the inlet and outlet water of the cooling water pump is obtained; When the temperature difference between the inlet and outlet water of the cooling water pump is greater than a preset upper limit temperature difference value, if the operating frequency of the cooling water pump is greater than or equal to the fourth preset maximum frequency, the operating frequency of the cooling water pump is controlled to be unchanged; if the operating frequency of the cooling water pump is less than the fourth preset maximum frequency, it is further determined whether the total power of the current water chiller and cooling water pump is greater than or equal to the total power of the water chiller and cooling water pump after frequency increase, if yes, the cooling water pump is controlled to operate at an increased frequency, if no, the operating frequency of the cooling water pump is controlled to be unchanged; When the temperature difference between the inlet and outlet water of the cooling water pump is greater than or equal to a preset lower limit temperature difference value and less than or equal to a preset upper limit temperature difference value, the operating frequency of the cooling water pump is controlled to be unchanged; When the temperature difference between the inlet and outlet water of the cooling water pump is less than the preset lower limit temperature difference value, if the operating frequency of the cooling water pump is less than or equal to a fourth preset minimum frequency, and the dry pipe pressure difference value of the cooling water pump is less than or equal to a preset safety protection value, the operating frequency of the cooling water pump is controlled to be unchanged, otherwise, it is further determined whether the total power of the current water chiller and cooling water pump is greater than or equal to the total power of the water chiller and cooling water pump after frequency decrease, if yes, the cooling water pump is controlled to operate at a decreased frequency, if no, the operating frequency of the cooling water pump is controlled to be unchanged.

8. The linkage control method of the subway wind-water system according to claim 4, wherein The step of controlling the number of operating cooling towers of the subway air and water system and the operating frequency of the fan of the cooling tower specifically comprises: Obtaining the load side refrigerating capacity of the subway air and water system; If the load side refrigerating capacity is less than or equal to a preset refrigerating capacity, the number of operating cooling towers is controlled to be one, if the load side refrigerating capacity is greater than the preset refrigerating capacity, the number of operating cooling towers is controlled to be two; After determining the number of operating cooling towers, the difference between the outlet water temperature of the cooling tower and the outdoor wet bulb temperature is obtained; When the difference between the outlet water temperature of the cooling tower and the outdoor wet bulb temperature is greater than a preset upper limit approximation degree value, if the operating frequency of the fan of the cooling tower is greater than or equal to a fifth preset maximum frequency, the operating frequency of the fan of the cooling tower is controlled to be unchanged, if the operating frequency of the fan of the cooling tower is less than the fifth preset maximum frequency, the fan of the cooling tower is controlled to operate at an increased frequency; When the difference between the outlet water temperature of the cooling tower and the outdoor wet bulb temperature is greater than or equal to a preset lower limit approximation degree value and less than or equal to a preset upper limit approximation degree value, the operating frequency of the fan of the cooling tower is controlled to be unchanged; When the difference between the outlet water temperature of the cooling tower and the outdoor wet bulb temperature is less than the preset lower limit approximation degree value, if the operating frequency of the fan of the cooling tower is less than or equal to a fifth preset minimum frequency, the fan of the cooling tower is controlled to be stopped, if the operating frequency of the fan of the cooling tower is greater than the fifth preset minimum frequency, the fan of the cooling tower is controlled to operate at a decreased frequency.

9. The linked control method of a subway wind water system according to any one of claims 1-8, characterized in that, The step of controlling the subway air and water system to operate in different operating modes to execute corresponding control strategies further comprises: when the subway air and water system operates in the ventilation mode, the control strategy executed comprises: controlling the station hall / station air handling unit of the subway air conditioning system to run, the exhaust fan of the subway air conditioning system to exhaust air, the fresh air fan of the subway air conditioning system to supply air, and the water chiller, chilled water pump, cooling water pump and cooling tower of the subway air conditioning system to be closed; obtaining the indoor station hall / station temperature; when the indoor station hall / station temperature is greater than the first preset upper temperature limit value, determining whether the fan running frequency of the station hall / station air handling unit is greater than or equal to the first preset maximum frequency; if yes, controlling the fan running frequency of the station hall / station air handling unit to remain unchanged, and if no, controlling the fan of the station hall / station air handling unit to run at a higher frequency; when the indoor station hall / station temperature is greater than or equal to the first preset lower temperature limit value and less than or equal to the first preset upper temperature limit value, controlling the fan running frequency of the station hall / station air handling unit to remain unchanged; when the indoor station hall / station temperature is less than the first preset lower temperature limit value, determining whether the current fan running frequency of the station hall / station air handling unit is less than or equal to the first preset minimum frequency; if yes, controlling the fan of the station hall / station air handling unit to stop running, and if no, controlling the fan of the station hall / station air handling unit to run at a lower frequency.

10. The linkage control method of the subway wind water system according to any one of claims 1-8, characterized in that, According to the outdoor air enthalpy value, the outdoor temperature and the indoor station hall / station air enthalpy value, the step of determining the current running mode of the subway air conditioning system, specifically comprising: when the outdoor air enthalpy value is greater than or equal to the indoor station hall / station air enthalpy value, determining that the subway air conditioning system runs to a small fresh air mode; when the outdoor air enthalpy value is less than the indoor station hall / station air enthalpy value, and the outdoor temperature is greater than the preset air supply temperature of the station hall / station air handling unit of the subway air conditioning system, determining that the subway air conditioning system runs to a full fresh air mode; when the outdoor air enthalpy value is less than the indoor station hall / station air enthalpy value, and the outdoor temperature is less than or equal to the preset air supply temperature of the station hall / station air handling unit, determining that the subway air conditioning system runs to the ventilation mode; wherein, the air conditioning mode includes: the small fresh air mode and the full fresh air mode.

11. A linkage control device for a subway air and water system, characterized by comprising: a first obtaining module for obtaining the indoor running condition of the subway; a second obtaining module for determining that the indoor subway is in a normal running condition, and obtaining the outdoor air enthalpy value, the outdoor temperature and the indoor station hall / station air enthalpy value; a determining module for determining the current running mode of the subway air conditioning system according to the outdoor air enthalpy value, the outdoor temperature and the indoor station hall / station air enthalpy value, wherein the running mode includes an air conditioning mode and a ventilation mode; a control module for controlling the subway air conditioning system to run in different running modes to execute corresponding control strategies; the step of controlling the subway air conditioning system to run in different running modes to execute corresponding control strategies, comprising: when the subway air conditioning system runs in the air conditioning mode, the control strategy executed at least includes: a water-air linkage control strategy, the water-air linkage control strategy comprising: obtaining the indoor station hall / station temperature; Controlling the fan operation frequency and operation number of the station hall / platform air handling unit of the subway air-water system according to the indoor station hall / platform temperature; Controlling the operation frequency of the chilled water pump of the subway air-water system according to the indoor station hall / platform temperature; Controlling the adjusting valve opening degree of the first cooling coil of the station hall / platform air handling unit according to the supply air temperature of the station hall / platform air handling unit; The step of controlling the fan operation frequency and operation number of the station hall / platform air handling unit of the subway air-water system according to the indoor station hall / platform temperature specifically comprises: When the indoor station hall / platform temperature is greater than the first preset upper temperature limit value, determining whether the current fan operation frequency of the station hall / platform air handling unit is greater than or equal to the first preset maximum frequency; if yes, controlling the fan operation frequency of the station hall / platform air handling unit unchanged, if no, determining whether the current fan operation number of the station hall / platform air handling unit reaches the maximum value; if no, increasing the fan operation number of the station hall / platform air handling unit, if yes, increasing the fan operation frequency of the station hall / platform air handling unit; When the indoor station hall / platform temperature is greater than or equal to the first preset lower temperature limit value and less than or equal to the first preset upper temperature limit value, controlling the fan operation frequency and operation number of the station hall / platform air handling unit unchanged; When the indoor station hall / platform temperature is less than the first preset lower temperature limit value, determining whether the current fan operation frequency of the station hall / platform air handling unit is less than or equal to the first preset minimum frequency; if no, reducing the fan operation frequency of the station hall / platform air handling unit, if yes, determining whether the current fan operation number of the station hall / platform air handling unit is greater than 1; if yes, reducing the fan operation number of the station hall / platform air handling unit, if no, controlling the fan operation frequency of the station hall / platform air handling unit unchanged, and executing the step of controlling the operation frequency of the chilled water pump of the subway air-water system according to the indoor station hall / platform temperature.

12. A subway wind water system characterized by, The subway air-water system linkage control device of claim 11, or the subway air-water system linkage control method for execution control, adopts the subway air-water system linkage control method of any one of claims 1-10. The subway air-water system linkage control device of claim 11, or the subway air-water system linkage control method for execution control, adopts the subway air-water system linkage control method of any one of claims 1-10.

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