Air conditioner cold station adjusting method and system, electronic equipment and storage medium

Abstract

The invention discloses an air conditioner cold station adjusting method and system, electronic equipment and a storage medium. The method comprises the steps that preset cold station parameter data is obtained; wherein the preset cold station parameter data comprises working state data of a cooling pump and working state data of a cold water host; acquiring preset wet bulb temperature data, and determining cooling water temperature difference safety threshold data through a preset safety range table according to the preset wet bulb temperature data; determining cooling water temperature difference data of the water chiller according to the working state data of the water chiller; determining a cooling pump control mode according to the cooling water temperature difference data of the water cooling host and the cooling water temperature difference safety threshold data; and adjusting the frequency of a preset cooling pump according to the working state data of the cooling pump and the control mode of the cooling pump. According to the embodiment, dynamic adjustment of the cooling pump can be achieved, the operation efficiency of the cooling pump is effectively improved, and energy consumption is reduced. The method can be widely applied to the technical field of cold station control.

Description

Technical Field

[0001] The present application relates to the field of cold station control technology, and in particular to an air-conditioning cold station adjustment method, system, electronic equipment and storage medium. Background Art

[0002] The cooling pump plays an important role in the cooling source of the central air-conditioning system, and is responsible for circulating cooling water to the refrigeration host to maintain its normal operation. However, the energy consumption of the cooling pump accounts for a considerable proportion of the entire system, especially under high load or extreme climate conditions, when the energy consumption of the cooling pump needs to be reduced. In related technologies, the operation mode of the cooling pump is usually based on fixed operating frequency or fixed temperature difference PID control, and the operation efficiency of the cooling pump is low and the energy consumption is large.

[0003] In summary, the technical problems existing in the relevant technologies need to be improved. Summary of the invention

[0004] The main purpose of the embodiments of the present application is to propose an air-conditioning cold station adjustment method, system, electronic device and storage medium, which can realize dynamic adjustment of the cooling pump, effectively improve the operating efficiency of the cooling pump, and reduce energy consumption.

[0005] To achieve the above object, an embodiment of the present application provides an air conditioning cold station adjustment method, the method comprising the following steps:

[0006] Acquire preset cold station parameter data; wherein the preset cold station parameter data includes cooling pump working status data and chiller main unit working status data;

[0007] Acquire preset wet-bulb temperature data, and determine cooling water temperature difference safety threshold data through a preset safety range table according to the preset wet-bulb temperature data;

[0008] Determine the cooling water temperature difference data of the chiller according to the chiller working status data;

[0009] Determine the cooling pump control mode according to the cooling water temperature difference data of the chiller host and the cooling water temperature difference safety threshold data;

[0010] The frequency of the preset cooling pump is adjusted according to the cooling pump working state data and the cooling pump control mode.

[0011] In some embodiments, the obtaining of preset wet-bulb temperature data to determine cooling water temperature difference safety threshold data through a preset safety range table according to the preset wet-bulb temperature data includes:

[0012] Acquire a plurality of the preset wet-bulb temperature data within a first time period, so as to calculate the wet-bulb average temperature data through the preset wet-bulb temperature data;

[0013] The cooling water temperature difference safety threshold is determined by querying the preset safety range table according to the wet-bulb average temperature data; wherein the preset safety range table includes a wet-bulb temperature range and a cooling water temperature difference safety range, and the wet-bulb temperature range corresponds one-to-one to the cooling water temperature difference safety range.

[0014] In some embodiments, the chiller operating status data includes chiller water supply temperature data, chiller return water temperature data, and chiller switch status data;

[0015] Determining the cooling water temperature difference data of the chiller according to the chiller working status data includes:

[0016] The cooling water temperature difference data of the chiller is calculated according to the water supply temperature data of the chiller, the switch status data of the chiller and the return water temperature data of the chiller; wherein the cooling water temperature difference data of the chiller includes the maximum value of the cooling water temperature difference at each time point in the second time period.

[0017] In some embodiments, determining the cooling pump control mode according to the cooling water temperature difference data of the chiller and the cooling water temperature difference safety threshold data includes:

[0018] When it is determined that the minimum temperature difference value in the cooling water temperature difference data of the chiller is greater than the maximum threshold value in the cooling water temperature difference safety threshold data, or the maximum temperature difference value in the cooling water temperature difference data of the chiller is less than the minimum threshold value in the cooling water temperature difference safety threshold data, it is determined that the cooling pump control mode is the safety adjustment mode;

[0019] Alternatively, when it is determined that the minimum temperature difference value in the cooling water temperature difference data of the chiller is smaller than the maximum threshold value in the cooling water temperature difference safety threshold data, and the maximum temperature difference value in the cooling water temperature difference data of the chiller is larger than the minimum threshold value in the cooling water temperature difference safety threshold data, the cooling pump control mode is determined to be an energy-saving adjustment mode.

[0020] In some embodiments, the frequency adjustment of the preset cooling pump according to the cooling pump working state data and the cooling pump control mode includes:

[0021] When it is determined that the cooling pump control mode is the safety adjustment mode, the expected cooling pump frequency data is calculated according to the cooling pump operating frequency data and the preset frequency adjustment step;

[0022] Alternatively, when it is determined that the cooling pump control mode is the energy-saving adjustment mode, the target energy-saving adjustment strategy is determined according to the preset weather forecast data and the cooling water temperature difference data of the chiller, so as to obtain the expected cooling pump frequency data by calculating the cooling pump operating frequency data and the preset frequency adjustment step according to the target energy-saving adjustment strategy.

[0023] In some embodiments, the target energy-saving adjustment strategy is determined according to the preset weather forecast data and the cooling water temperature difference data of the chiller, so as to obtain the expected cooling pump frequency data by calculating the cooling pump operating frequency data and the preset frequency adjustment step according to the target energy-saving adjustment strategy, including:

[0024] When it is determined that the preset weather change data is less than the preset weather change threshold, and the maximum temperature difference in the cooling water temperature difference data of the chiller is less than the first temperature threshold, the target energy-saving adjustment strategy is determined to be a strategy for reducing the operating frequency, and the cooling pump operating frequency data is subtracted from the preset frequency adjustment step to obtain the expected cooling pump frequency data; wherein the preset weather change data is determined by the preset weather forecast data, and the first temperature threshold is obtained by subtracting the preset floating temperature data from the threshold maximum value in the cooling water temperature difference safety threshold data;

[0025] Alternatively, when it is determined that the preset weather change data is less than the preset weather change threshold, and the minimum temperature difference in the cooling water temperature difference data of the chiller is greater than the second temperature threshold, the target energy-saving adjustment strategy is determined to be an increased operating frequency strategy, and the cooling pump operating frequency data is added to the preset frequency adjustment step to obtain the expected cooling pump frequency data; wherein, the second temperature threshold is obtained by adding the threshold minimum value in the cooling water temperature difference safety threshold data to the preset floating temperature data.

[0026] In some embodiments, after performing the step of obtaining the preset cold station parameter data, the method further includes:

[0027] The preset cold station parameter data is subjected to data preprocessing; wherein the data preprocessing includes abnormal data deletion processing and missing data filling processing.

[0028] To achieve the above purpose, another aspect of the embodiment of the present application provides an air conditioning cold station regulation system, the system comprising:

[0029] The first module is used to obtain preset cold station parameter data; wherein the preset cold station parameter data includes cooling pump working status data and chiller main unit working status data;

[0030] The second module is used to obtain preset wet-bulb temperature data, so as to determine the cooling water temperature difference safety threshold data through a preset safety range table according to the preset wet-bulb temperature data;

[0031] The third module is used to determine the cooling water temperature difference data of the chiller according to the working status data of the chiller;

[0032] A fourth module is used to determine a cooling pump control mode according to the cooling water temperature difference data of the chiller and the cooling water temperature difference safety threshold data;

[0033] The fifth module is used to adjust the frequency of the preset cooling pump according to the cooling pump working status data and the cooling pump control mode.

[0034] To achieve the above object, another aspect of an embodiment of the present application provides an electronic device, the electronic device comprising:

[0035] at least one processor;

[0036] at least one memory for storing at least one program;

[0037] When the at least one program is executed by the at least one processor, the at least one processor implements the above method.

[0038] To achieve the above objective, another aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program implements the above method when executed by a processor.

[0039] The embodiments of the present application include at least the following beneficial effects: The present application provides an air conditioning cold station adjustment method, system, electronic device and storage medium. The scheme first obtains preset cold station parameter data, including cooling pump working state data and chiller working state data. At the same time, the embodiment of the present invention obtains preset wet bulb temperature data to determine the cooling water temperature difference safety threshold data through a preset safety range table according to the preset wet bulb temperature data. Next, the embodiment of the present invention determines the cooling water temperature difference data of the chiller according to the chiller working state data, and then determines the cooling pump control mode according to the cooling water temperature difference data of the chiller and the cooling water temperature difference safety threshold data. Finally, the embodiment of the present invention adjusts the frequency of the preset cooling pump according to the cooling pump working frequency data and the cooling pump control mode, thereby realizing dynamic adjustment of the cooling pump of the air conditioning cold station. It is easy to understand that the embodiment of the present invention determines the cooling pump control mode through the cooling water temperature difference data of the chiller and the cooling water temperature difference safety threshold, and then adjusts the frequency of the preset cooling pump in combination with the cooling pump working frequency data, which can effectively improve the operating efficiency of the cooling pump and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a flow chart of an air conditioning cold station adjustment method provided by an embodiment of the present invention;

[0041] Figure 2 It is a flow chart of obtaining preset wet-bulb temperature data and determining cooling water temperature difference safety threshold data through a preset safety range table according to the preset wet-bulb temperature data provided by an embodiment of the present invention;

[0042] Figure 3 It is a flow chart of determining the cooling water temperature difference data of a chiller according to the working status data of a chiller provided by an embodiment of the present invention;

[0043] Figure 4 It is a flow chart of determining a cooling pump control mode according to cooling water temperature difference data of a chiller host and cooling water temperature difference safety threshold data provided by an embodiment of the present invention;

[0044] Figure 5 It is a flow chart of adjusting the frequency of a preset cooling pump according to the cooling pump operating frequency data and the cooling pump control mode provided by an embodiment of the present invention;

[0045] Figure 6 It is a flowchart of determining a target energy-saving adjustment strategy according to preset weather forecast data and cooling water temperature difference data of a chiller according to an embodiment of the present invention, so as to obtain expected cooling pump frequency data by calculating cooling pump operating frequency data and preset frequency adjustment step length according to the target energy-saving adjustment strategy;

[0046] Figure 7 is a flow chart of performing data preprocessing on preset cold station parameter data provided by an embodiment of the present invention;

[0047] Figure 8 It is a general structural flow chart of air conditioning cold station regulation provided by an embodiment of the present invention;

[0048] Fig. 9 It is a structural schematic diagram of an air conditioning cold station regulating system provided by an embodiment of the present invention;

[0049] Fig.10 It is a schematic diagram of the hardware structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present application. They are only examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the attached claims.

[0051] It is understood that the terms "first", "second", etc. used in this application can be used to describe various concepts in this article, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another concept. For example, without departing from the scope of the embodiment of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein can be interpreted as "at the time of" or "when" or "in response to determination".

[0052] The terms "at least one", "multiple", "each", "any", etc. used in this application, at least one includes one, two or more, multiple includes two or more, each refers to each of the corresponding multiple, and any refers to any one of the multiple.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0054] Before describing the embodiments of the present application in detail, some nouns and terms involved in the embodiments of the present application are first described. The nouns and terms involved in the embodiments of the present application are subject to the following explanations.

[0055] Air conditioning cold station: It is a control system that integrates key components such as chillers, chilled water circulation systems, and cooling water circulation systems. It is the source of cold energy for the air conditioning system.

[0056] Water-cooled pump: a pump device that uses liquid working fluid (such as water or specific coolant) for cooling, and achieves requirements such as liquid transportation or shaft power transmission by utilizing the continuous nature and compressibility of the liquid.

[0057] Chiller: Also known as a water-cooled radiator, it is a key component in the air-conditioning system. It uses cooling water as a cooling medium and removes heat from the room through heat exchange, thereby achieving a cooling effect.

[0058] Outdoor wet bulb: refers to the wet bulb temperature of outdoor air, which is an important indicator for measuring air humidity. The wet bulb temperature refers to the stable temperature reached after a period of time when a wet cloth is wrapped around the mercury bulb of a thermometer under a certain air pressure and air is circulated.

[0059] The cooling pump plays an important role in the cooling source of the central air-conditioning system, and is responsible for circulating cooling water to the refrigeration host to maintain its normal operation. However, the energy consumption of the cooling pump accounts for a considerable proportion of the entire system, especially under high load or extreme climate conditions, the energy consumption of the cooling pump needs to be reduced. In the related art, the cooling pump operation mode is usually based on a fixed operating frequency or a fixed temperature difference PID control, the operation efficiency of the cooling pump is low, and the energy consumption is large. For example, the traditional cooling pump operation mode is usually based on a fixed frequency. This fixed operation mode causes the cooling pump to still operate at full load when the load is low, resulting in unnecessary energy waste, increasing unnecessary operating costs, and being unable to effectively respond to changes in temperature and load. In addition, the current cooling system often relies on a fixed temperature difference threshold when adjusting the operation of the cooling pump, and the fixed threshold cannot adapt to the real-time changing environmental conditions, resulting in low cooling efficiency and increased energy consumption. At the same time, in the cooling pump control process, there is often a lack of real-time monitoring and intelligent adjustment functions, and it is impossible to fully utilize data analysis and algorithm optimization operation strategies.

[0060] In view of this, an embodiment of the present application provides an air conditioning cold station adjustment method, system, electronic device and storage medium. The scheme first obtains preset cold station parameter data, including cooling pump working status data and water chiller working status data. At the same time, the embodiment of the present invention obtains preset wet-bulb temperature data to determine the cooling water temperature difference safety threshold data through a preset safety range table based on the preset wet-bulb temperature data. Next, the embodiment of the present invention determines the cooling water temperature difference data of the water chiller based on the water chiller working status data, and then determines the cooling pump control mode based on the cooling water temperature difference data of the water chiller and the cooling water temperature difference safety threshold data. Finally, the embodiment of the present invention adjusts the frequency of the preset cooling pump according to the cooling pump working frequency data and the cooling pump control mode, thereby realizing dynamic adjustment of the cooling pump of the air conditioning cold station, which can effectively improve the operating efficiency of the cooling pump and reduce energy consumption.

[0061] The air conditioning cold station adjustment method provided in the embodiment of the present application relates to the field of cold station energy-saving technology. The air conditioning cold station adjustment method provided in the embodiment of the present application can be applied to a terminal, can also be applied to a server, and can also be software running in a terminal or a server. In some embodiments, the terminal can be a smart phone, a tablet computer, a laptop computer, a desktop computer, a smart speaker, a smart watch, and a car terminal, etc., but is not limited to this; the server side can be configured as an independent physical server, or it can be configured as a server cluster or a distributed system composed of multiple physical servers, and can also be configured as a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms. The server can also be a node server in a blockchain network; the software can be an application that implements the air conditioning cold station adjustment method, etc., but is not limited to the above forms.

[0062] The present application can be used in many general or special computer system environments or configurations. For example: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments including any of the above systems or devices, etc. The present application can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present application can also be practiced in distributed computing environments, in which tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules can be located in local and remote computer storage media including storage devices.

[0063] Figure 1 is an optional flow chart of the air conditioning cold station adjustment method provided in the embodiment of the present application. Figure 1 The method may include but is not limited to steps S110 to S150.

[0064] Step S110: Obtaining preset cooling station parameter data, wherein the preset cooling station parameter data includes cooling pump working state data and chiller main unit working state data.

[0065] Step S120: obtaining preset wet-bulb temperature data, and determining cooling water temperature difference safety threshold data through a preset safety range table according to the preset wet-bulb temperature data.

[0066] Step S130: determining the cooling water temperature difference data of the water chiller according to the working status data of the water chiller.

[0067] Step S140: determining a cooling pump control mode according to the cooling water temperature difference data of the chiller and the cooling water temperature difference safety threshold data.

[0068] Step S150: frequency-adjusting the preset cooling pump according to the cooling pump working state data and the cooling pump control mode.

[0069] During the working process of this specific embodiment, the embodiment of the present invention first obtains the preset cold station parameter data. Specifically, the preset cold station parameter data in the embodiment of the present invention includes cooling pump working state data and chiller working state data. Among them, the cooling pump working state data refers to the working parameters of the corresponding cooling pump in the air-conditioning cold station, such as the working frequency, etc. Correspondingly, the chiller working state data refers to the working parameters of the corresponding chiller in the air-conditioning cold station, such as water temperature data, switch status, etc. Next, the embodiment of the present invention obtains the preset wet-bulb temperature data to determine the cooling water temperature difference safety threshold data through the preset safety range table according to the preset wet-bulb temperature data. Specifically, the preset wet-bulb temperature data in the embodiment of the present invention refers to the wet-bulb temperature data of the outdoor air. Correspondingly, the preset safety range table refers to a table storing the cooling water temperature difference safety range data. The embodiment of the present invention queries the table of the cooling water temperature difference safety range data according to the collected preset wet-bulb temperature data, that is, the preset safety range table, so as to determine the cooling water temperature difference safety threshold data. Next, the embodiment of the present invention determines the cooling water temperature difference data of the chiller according to the working state data of the chiller, and then determines the cooling pump control mode according to the cooling temperature difference data of the chiller and the cooling water temperature difference safety threshold data. Specifically, the cooling water temperature difference data of the chiller in the embodiment of the present invention refers to the cooling water supply and return water temperature difference data of the chiller. Accordingly, the embodiment of the present invention determines the adjustment method of the preset cooling pump, that is, the cooling pump control mode, by analyzing the relationship between the cooling temperature difference data of the chiller and the cooling water temperature difference safety threshold data. Finally, the embodiment of the present invention adjusts the frequency of the preset cooling pump according to the working state data of the cooling pump and the cooling pump control mode. Specifically, the embodiment of the present invention determines the adjustment parameters of the preset cooling pump according to the cooling pump control mode, combined with the current working state of the preset cooling pump, that is, the working state data of the cooling pump, so as to adjust the frequency of the preset cooling pump according to the corresponding adjustment parameters, thereby realizing the dynamic adjustment of the cooling pump, effectively improving the operating efficiency of the cooling pump, and reducing energy consumption.

[0070] Reference Figure 2 In some embodiments of the present invention, obtaining preset wet-bulb temperature data to determine cooling water temperature difference safety threshold data through a preset safety range table according to the preset wet-bulb temperature data includes but is not limited to the following steps:

[0071] Step S210: obtaining a plurality of preset wet-bulb temperature data within a first time period, so as to calculate the wet-bulb average temperature data through the preset wet-bulb temperature data.

[0072] Step S220: Determine the cooling water temperature difference safety threshold by querying the preset safety range table according to the wet-bulb average temperature data. The preset safety range table includes the wet-bulb temperature range and the cooling water temperature difference safety range, and the wet-bulb temperature range corresponds to the cooling water temperature difference safety range.

[0073] In this specific embodiment, the embodiment of the present invention first obtains several preset wet-bulb temperature data within the first time period, so as to calculate the wet-bulb average temperature data through the element wet-bulb temperature data, and then determines the cooling water temperature difference safety threshold by querying the preset safety range table according to the wet-bulb average temperature data. Specifically, the first time period in the embodiment of the present invention refers to a preset data collection duration, such as 15 minutes. Among them, the embodiment of the present invention collects several preset wet-bulb temperature data within the first time period, and averages the collected preset wet-bulb temperature data to obtain the wet-bulb average temperature data. For example, the embodiment of the present invention collects the outdoor wet-bulb temperature every minute within 15 minutes, thereby obtaining 15 preset wet-bulb temperature data, and averages them to obtain the wet-bulb average temperature data. Correspondingly, the embodiment of the present invention constructs a preset safety range table through the wet-bulb temperature range and the cooling water temperature difference safety range. Among them, the wet-bulb temperature range corresponds to the cooling water temperature difference safety range one by one. For example, the cooling water temperature difference safety range table corresponding to the wet-bulb temperature range set in the embodiment of the present invention is shown in Table 1 below:

[0074] Table 1

[0075]

[0076] Accordingly, the embodiment of the present invention can obtain a unique cooling water temperature difference safety threshold by querying the preset safety range table according to the corresponding wet-bulb average temperature data. wb In (T wbmin2 ,T wbmax2 ) range, the cooling water temperature difference safety threshold obtained by query is [T min2 ,T max2 ].

[0077] Combination Figure 1 , refer to Figure 3 In some embodiments of the present invention, the chiller operating status data includes the chiller water supply temperature data, the chiller water return temperature data, and the chiller switch status data. Accordingly, determining the chiller cooling water temperature difference data according to the chiller operating status data includes but is not limited to the following steps:

[0078] Step S310: Calculate the chiller cooling water temperature difference data according to the chiller water supply temperature data, the chiller switch state data and the chiller return water temperature data, wherein the chiller cooling water temperature difference data includes the maximum cooling water temperature difference at each time point in the second time period.

[0079] In this specific embodiment, the water supply temperature data of the chiller refers to the feedback value of the water supply temperature of the chiller in a data collection time period, and the water return temperature data of the chiller refers to the feedback value of the water return temperature of the chiller in a data collection time period. Correspondingly, the water switch state data of the chiller refers to the working state of the chiller at each data collection time, such as information on whether the chiller is in an on or off state. Among them, the embodiment of the present invention calculates the cooling water temperature difference data of the chiller by combining the water supply temperature data of the chiller, the water switch state data of the chiller, and the water return temperature data of the chiller. Specifically, the embodiment of the present invention first calculates the supply and return water temperature difference of each collection point according to the water supply temperature data of the chiller and the water return temperature data of the chiller at each collection point at a certain moment. Then, the embodiment of the present invention determines the cooling water temperature difference data of each collection point in combination with the water switch state data of each collection point at this moment, and takes the maximum temperature difference data as the cooling water temperature difference data at this moment. Correspondingly, the embodiment of the present invention calculates the maximum value of the cooling water temperature difference at each time point in the second time period in the above manner, thereby obtaining the cooling water temperature difference data of the chiller.

[0080] Combination Figure 1 , refer to Figure 4 In some embodiments of the present invention, the cooling pump control mode is determined according to the cooling water temperature difference data of the chiller and the cooling water temperature difference safety threshold data, including but not limited to the following steps:

[0081] Step S410: When it is determined that the minimum temperature difference value in the cooling water temperature difference data of the chiller is greater than the maximum threshold value in the cooling water temperature difference safety threshold data, or the maximum temperature difference value in the cooling water temperature difference data of the chiller is less than the minimum threshold value in the cooling water temperature difference safety threshold data, the cooling pump control mode is determined to be the safety adjustment mode.

[0082] Step S420: When it is determined that the minimum temperature difference value in the cooling water temperature difference data of the chiller is less than the maximum threshold value in the cooling water temperature difference safety threshold data, and the maximum temperature difference value in the cooling water temperature difference data of the chiller is greater than the minimum threshold value in the cooling water temperature difference safety threshold data, the cooling pump control mode is determined to be the energy-saving adjustment mode.

[0083] In this specific embodiment, the embodiment of the present invention compares the cooling water temperature difference data of the chiller with the cooling water temperature difference safety threshold data to determine the cooling pump control mode. Specifically, the embodiment of the present invention first compares the minimum temperature difference value in the cooling water temperature difference data of the cooling host with the maximum threshold value in the cooling water temperature difference safety threshold data to determine whether the minimum temperature difference value is greater than the maximum threshold value. When it is determined that the minimum temperature difference value is greater than the maximum threshold value, it means that the current cooling water temperature difference is abnormal, the temperature difference has exceeded the maximum value of the cooling water temperature difference safety range threshold value, and safety adjustment control is required. Therefore, it is determined that the desired cooling pump control mode is the safety adjustment mode. Alternatively, the embodiment of the present invention compares whether the maximum temperature difference value in the cooling water temperature difference data of the chiller is less than the minimum threshold value in the cooling water temperature difference safety threshold value to determine whether the temperature difference is lower than the minimum value of the cooling water temperature difference safety range threshold value. When it is determined that the maximum temperature difference value is less than the minimum threshold value, it means that the temperature difference is lower than the minimum value of the cooling water temperature difference safety range threshold value, and it lasts for the duration of the second time period, so it is determined that the desired cooling pump control mode is the safety adjustment mode to perform safety adjustment control on the cooling pump. In addition, when it is determined that the minimum temperature difference value in the cooling water temperature difference data of the chiller is less than the maximum threshold value in the cooling water temperature difference safety threshold data, and the maximum temperature difference value in the cooling water temperature difference data of the chiller is greater than the minimum threshold value in the cooling water temperature difference safety threshold data, it means that the current temperature difference is within the cooling water temperature difference safety range, and there is no need to generate a corresponding safety protection strategy. At this time, the cooling pump control mode is determined to be the energy-saving adjustment mode to determine whether there are conditions to start the energy-saving strategy.

[0084] Combination Figure 4 , refer to Figure 5 In some embodiments of the present invention, the frequency of a preset cooling pump is adjusted according to the cooling pump working state data and the cooling pump control mode, including but not limited to the following steps:

[0085] Step S510: when it is determined that the cooling pump control mode is the safety adjustment mode, the expected cooling pump frequency data is calculated according to the cooling pump operating frequency data and the preset frequency adjustment step.

[0086] Step S520: When it is determined that the cooling pump control mode is the energy-saving adjustment mode, the target energy-saving adjustment strategy is determined according to the preset weather forecast data and the cooling water temperature difference data of the chiller, so as to obtain the expected cooling pump frequency data by calculating the cooling pump operating frequency data and the preset frequency adjustment step according to the target energy-saving adjustment strategy.

[0087] In this specific embodiment, when the cooling pump control mode is a safety adjustment mode, the embodiment of the present invention calculates the expected cooling frequency data based on the cooling pump operating frequency data and the preset frequency adjustment step. Specifically, the cooling pump operating state data in the embodiment of the present invention includes the cooling pump operating frequency data and the cooling pump switch state data. Among them, the cooling pump operating frequency refers to the preset cooling pump frequency setting value, that is, the current preset cooling pump operating frequency, and the pump switch state data refers to the information whether the preset cooling pump is currently in an open or closed state. Correspondingly, when it is determined that the minimum temperature difference in the cooling water temperature difference data of the chilled water host is greater than the maximum threshold value in the cooling water temperature difference safety threshold data, it means that the temperature difference has exceeded the cooling water temperature difference safety range, and it is necessary to issue an instruction to increase the cooling pump frequency. At this time, the expected cooling pump frequency data is obtained by adding the cooling pump operating frequency data to the preset frequency adjustment step. Among them, the preset frequency adjustment step refers to the amplitude of each adjustment, which can be obtained by pre-customizing the setting. In addition, when it is determined that the maximum temperature difference in the cooling water temperature difference data of the chiller is less than the minimum threshold value in the cooling water temperature difference safety threshold data, it means that the temperature difference has fallen below the cooling water temperature difference safety range, and an instruction to reduce the cooling pump frequency needs to be issued. At this time, the expected cooling pump frequency data is obtained by subtracting the preset frequency adjustment step from the cooling pump operating frequency data.

[0088] In addition, when it is determined that the cooling pump control mode is an energy-saving adjustment mode, the embodiment of the present invention determines the target energy-saving adjustment strategy according to the preset weather forecast data and the cooling water temperature difference data of the chiller, and then calculates the expected cooling pump frequency data according to the target energy-saving adjustment strategy through the cooling pump working frequency data and the preset adjustment step. Specifically, the preset weather forecast data in the embodiment of the present invention refers to the weather forecast information within the future preset time period, such as the temperature information within the next 4 hours. Accordingly, the embodiment of the present invention first obtains the preset weather forecast data to determine whether the temperature change trend within the future preset time period is stable. Further, the embodiment of the present invention determines whether the current temperature difference data meets the energy-saving conditions according to the future weather change trend combined with the cooling water temperature difference data of the chiller, thereby determining the corresponding target energy-saving adjustment strategy, such as increasing the cooling pump frequency or reducing the cooling pump frequency. Finally, according to the determined target energy-saving adjustment strategy, the embodiment of the present invention calculates the expected cooling pump frequency data according to the corresponding calculation method through the cooling pump working frequency data and the preset frequency adjustment step.

[0089] Combination Figure 5 , refer to Figure 6 In some embodiments of the present invention, a target energy-saving adjustment strategy is determined according to preset weather forecast data and cooling water temperature difference data of a chiller, so as to obtain the expected cooling pump frequency data by calculating the cooling pump operating frequency data and the preset frequency adjustment step length according to the target energy-saving adjustment strategy, including but not limited to the following steps:

[0090] Step S610: When it is determined that the preset weather change data is less than the preset weather change threshold, and the maximum temperature difference in the chiller cooling water temperature difference data is less than the first temperature threshold, the target energy-saving adjustment strategy is determined to be a strategy for reducing the operating frequency, and the cooling pump operating frequency data is subtracted from the preset frequency adjustment step to obtain the expected cooling pump frequency data. The preset weather change data is determined by the preset weather forecast data, and the first temperature threshold is obtained by subtracting the preset floating temperature data from the threshold maximum value in the cooling water temperature difference safety threshold data.

[0091] Step S620: When it is determined that the preset weather change data is less than the preset weather change threshold, and the minimum temperature difference in the chiller cooling water temperature difference data is greater than the second temperature threshold, the target energy-saving adjustment strategy is determined to be the strategy of increasing the operating frequency, and the cooling pump operating frequency data is added with the preset frequency adjustment step to obtain the expected cooling pump frequency data. The second temperature threshold is obtained by adding the minimum threshold value in the cooling water temperature difference safety threshold data to the preset floating temperature data.

[0092] In this specific embodiment, the embodiment of the present invention first determines the target energy-saving adjustment strategy by judging whether the preset weather change data is less than the preset weather change threshold, and at the same time judging whether the maximum temperature difference in the cooling water temperature difference data of the chiller is less than the first temperature threshold. Specifically, the preset weather change threshold in the embodiment of the present invention refers to the threshold data of the preset weather temperature change trend being stable. Accordingly, the preset weather change data in the embodiment of the present invention is determined by the preset weather forecast data, indicating the weather change situation in the future preset time period, and is calculated by the difference between the highest temperature value and the lowest temperature value in the time period. In addition, the first temperature threshold in the embodiment of the present invention is obtained by subtracting the preset floating temperature data from the maximum threshold value in the cooling water temperature difference safety threshold. Among them, the preset floating temperature refers to the preset energy-saving floating temperature. Exemplarily, when it is determined that the preset weather change data is less than the preset weather change threshold, it means that the weather change trend in the future preset time period is stable. Next, the embodiment of the present invention judges whether the maximum temperature difference in the cooling water temperature difference data of the chiller is less than the first temperature threshold obtained by subtracting the maximum threshold value in the cooling water temperature difference safety threshold data from the preset floating temperature data. When it is determined that the maximum temperature difference is less than the first temperature threshold, it means that the operating frequency of the cooling pump can be reduced at present, that is, the target energy-saving adjustment strategy is determined to be a strategy of reducing the operating frequency. At this time, the embodiment of the present invention obtains the expected cooling pump frequency data by subtracting the preset frequency adjustment step from the current cooling pump operating frequency. Alternatively, when it is determined that the preset weather change data is less than the preset weather change threshold, and the minimum temperature difference in the cooling water temperature difference data of the chilled water host is greater than the second temperature threshold, it means that the operating frequency of the cooling pump can be increased at present, that is, the target energy-saving adjustment strategy is determined to be a strategy of increasing the operating frequency. Among them, in the embodiment of the present invention, the second temperature threshold is obtained by adding the minimum threshold value in the cooling water temperature difference safety threshold data plus the preset floating temperature data. Correspondingly, the embodiment of the present invention obtains the expected cooling pump frequency data by adding the preset frequency adjustment step to the current cooling pump operating frequency data.

[0093] Combination Figure 1 , refer to Figure 7 In some embodiments of the present invention, after obtaining the preset cooling station parameter data, the air conditioning cooling station adjustment method provided by the embodiment of the present invention further includes but is not limited to the following steps:

[0094] Step S710: preprocessing the preset cold station parameter data, wherein the data preprocessing includes abnormal data deletion processing and missing data filling processing.

[0095] During the working process of this specific embodiment, after obtaining the preset cold station parameter data, the embodiment of the present invention performs data preprocessing on the corresponding cold station parameter data. Specifically, in order to facilitate subsequent data analysis and processing and improve the accuracy and completeness of the data, the embodiment of the present invention performs abnormal data deletion and missing data filling processing on the collected preset cold station parameter data, such as the water supply temperature data of the chiller, the return temperature data of the chiller, the switch status data of the chiller, the operating frequency data of the cooling pump, the switch status data of the cooling pump, and the preset wet-bulb temperature data. Among them, abnormal data refers to values ​​(outliers) in the data that are significantly different from most data points. The accuracy and reliability of the data are improved by deleting the abnormal data. Correspondingly, missing data refers to values ​​that are missing due to various reasons (such as omissions, equipment failures, etc.). The accuracy and reliability of the data can be effectively improved by interpolation filling.

[0096] The following is a detailed description and explanation of the solution of the embodiment of the present invention in conjunction with a specific application example of air conditioning cooling station regulation:

[0097] For example, refer to Figure 8 , Figure 8 It is the overall structural flow chart of the air conditioning cold station regulation provided by the embodiment of the present invention. Specifically, the embodiment of the present invention first collects parameters such as the working status of the cooling pump and the working status data of the cold water host. For example, the current minute cooling pump frequency setting value of the cold station, the cooling pump switch status feedback value, the current minute cold water host switch status feedback value, the cold water host cooling water supply and return water temperature feedback value every minute in the past 15 minutes, the outdoor wet-bulb temperature and the weather forecast data for the next 4 hours. Then, the embodiment of the present invention performs data preprocessing on the collected data, including deleting abnormal data and interpolating and filling missing data. Further, the current cooling water temperature difference safety threshold data is determined by a preset cooling water temperature difference range table corresponding to a preset wet-bulb temperature value range, and the maximum value of the cooling water temperature difference of the cold water host every minute in the past 15 minutes is calculated as (Δ1, Δ2, ..., Δ15). Then, the embodiment of the present invention calculates the average operating frequency F of the cooling pump. a , set the cooling pump frequency adjustment step S1, cooling pump frequency adjustment lower limit F l , and the upper limit of cooling pump frequency adjustment F h Next, the embodiment of the present invention compares (Δ1, Δ2, ..., Δ15) with T min and T max Size, that is, to determine whether min(Δ1, Δ2, ..., Δ15) is greater than the maximum value of the cooling water temperature difference safety threshold data and whether max(Δ1, Δ2, ..., Δ15) is less than the minimum value of the cooling water temperature difference safety threshold data, and then determine the type of the next strategy. Finally, the cooling pump frequency strategy F is issued. sTo the group control system and monitor continuously.

[0098] Exemplarily, taking a cold station of a certain project as an example, the parameter data collected in the embodiment of the present invention include: cooling pump switch state feedback value: (1, 0, 1, 1, 0, 1); cooling pump frequency setting value: (44, 0, 44, 44, 0, 44); chiller switch state feedback value: (1, 0, 1, 1, 0, 1); taking the first minute as an example, the chiller cooling water supply temperature feedback value: (34.3, 34.5, 33.8, 33.1, 33.3, 33.5), the chiller cooling water return temperature feedback value: (29.5, 30.3, 29.1, 28.5, 30.3, 29.0); and the weather forecast for the next 4 hours (32, 33, 33, 33). At the same time, the embodiment of the present invention obtains the outdoor wet-bulb temperature every minute in the past 15 minutes, and averages the 15 outdoor wet-bulb temperatures, and calculates that the average value of the outdoor wet-bulb temperature within 15 minutes is 27.5 degrees Celsius. Accordingly, the embodiment of the present invention sets the energy-saving strategy floating temperature T f = 0.3 degrees Celsius, the cooling water temperature difference safety range corresponding to the wet bulb temperature range is shown in Table 2 below:

[0099] Table 2

[0100]

[0101] Accordingly, according to the 15-minute average of the outdoor wet-bulb temperature of 27.5 degrees Celsius, the cooling water temperature difference safety threshold is [3.0, 4.7]. Next, the example of the present invention calculates the maximum value of the host cooling water temperature difference every minute in the past 15 minutes. Taking the first minute as an example, the embodiment of the present invention shows that the maximum value of the host cooling water temperature difference when the host is turned on is Δ1 = max[1*(34.3-29.5), 0*(34.5-30.3), 1*(33.8-29.1), 1*(33.1-28.5), 0*(33.3-30.3), 1*(33.5-29.0)] = 4.8. Then, the maximum value of the cooling water temperature difference is calculated in turn every minute, and the maximum value of the cooling water temperature difference of the host machine every minute in the past 15 minutes is obtained as follows: (4.8, 4.9, 5.1, 5.1, 5.0, 4.9, 4.8, 5.1, 5.2, 5.2, 5.2, 5.1, 4.9, 5.0, 5.2). Accordingly, the embodiment of the present invention calculates the operating frequency data of the cooling pump, which is obtained by averaging the cooling pump switch state feedback value and the cooling pump frequency setting value. For example, the average operating frequency F of the cooling pump a =(1*44+0*0+1*44+1*44+0*0+1*44) / (1+1+1+1)=44. At the same time, the embodiment of the present invention sets the cooling pump frequency adjustment step S1=2H z , cooling pump frequency adjustment lower limit Fl =35H z , cooling pump frequency adjustment upper limit F h =48H z Further, in the embodiment of the present invention, min(4.8, 4.9, 5.1, 5.1, 5.0, 4.9, 4.8, 5.1, 5.2, 5.2, 5.2, 5.1, 4.9, 5.0, 5.2) = 4.8. Since 4.8 is greater than 4.7 in the cooling water temperature difference threshold [4.2, 4.7], the cooling pump safety guard strategy is executed, and the cooling pump frequency setting value F s =F a +S1=44+2=46. Finally, the frequency setting value of the cooling pump is 46H. z regulation strategy and begins continuous monitoring, starting a cycle at a frequency of every minute.

[0102] Exemplarily, taking another project cold station as an example, the parameter data collected by the embodiment of the present invention include: cooling pump switch state feedback value: (1, 0, 1, 1, 0, 1); cooling pump frequency setting value: (44, 0, 44, 44, 0, 44); chiller switch state feedback value: (1, 0, 1, 1, 0, 1); taking the first minute as an example, the chiller cooling water supply temperature feedback value: (32.0, 34.5, 31.4, 31.5, 33.3, 31.2), the chiller cooling water return temperature feedback value: (27.5, 30.3, 27.1, 27.2, 30.3, 27.0); and the weather forecast for the next 4 hours (27, 28, 28, 28). At the same time, the embodiment of the present invention obtains the outdoor wet-bulb temperature every minute in the past 15 minutes, and averages the 15 outdoor wet-bulb temperatures, and calculates that the average value of the outdoor wet-bulb temperature within 15 minutes is 25.5 degrees Celsius. Accordingly, the embodiment of the present invention sets the energy-saving strategy floating temperature T f=0.3 degrees Celsius, and the cooling water temperature difference safety range corresponding to the wet-bulb temperature numerical range is also shown in Table 2 above. Therefore, according to the 15-minute average of the outdoor wet-bulb temperature of 27.5 degrees Celsius, the cooling water temperature difference threshold is [3.0, 4.9]. Then, the example of the present invention calculates the maximum cooling water temperature difference of the host every minute for the past 15 minutes. Taking the first minute as an example, the maximum cooling water temperature difference of the host when it is turned on Δ1 = max[1*(32.0-27.5), 0*(34.5-30.3), 1*(31.4-27.1), 1*(31.5-27.2), 0*(33.3-30.3), 1*(31.2-27.0)] = 4.5. Accordingly, the embodiment of the present invention calculates the maximum temperature difference of each minute in sequence, and obtains the maximum temperature difference of the cooling water of the main engine every minute in the past 15 minutes: (4.5, 4.5, 4.5, 4.4, 4.4, 4.3, 4.3, 4.3, 4.4, 4.4, 4.4, 4.3, 4.5, 4.5, 4.5). At the same time, the embodiment of the present invention calculates the average operating frequency F of the cooling pump a =(1*44+0*0+1*44+1*44+0*0+1*44) / (1+1+1+1)=44. In addition, the cooling pump frequency adjustment step S1 is set to 2H in the embodiment of the present invention. z , cooling pump frequency adjustment lower limit F l =35H z , cooling pump frequency adjustment upper limit F h =48H z . Further, in the embodiment of the present invention, min(4.5, 4.5, 4.5, 4.4, 4.4, 4.3, 4.3, 4.3, 4.4, 4.4, 4.4, 4.3, 4.5, 4.5, 4.5) = 4.3, and 4.3 is less than 4.9 in the cooling water temperature difference threshold [3, 4.9]. At the same time, max(4.5, 4.5, 4.5, 4.4, 4.4, 4.3, 4.3, 4.3, 4.3, 4.4, 4.4, 4.4, 4.3, 4.5, 4.5, 4.5) = 4.5, and 4.5 is greater than 3 in the cooling water temperature difference threshold [3, 4.9]. Therefore, no security guard strategy is currently generated, and the embodiment of the present invention further determines whether it is conditional to enable the energy-saving strategy. Accordingly, the embodiment of the present invention selects a method of reducing the frequency of the cooling pump to save energy. The weather forecast for the next 4 hours is (27, 28, 28, 28), 28-27=1<2, which is judged to be a stable trend, and max(4.5, 4.5, 4.5, 4.4, 4.4, 4.3, 4.3, 4.3, 4.4, 4.4, 4.4, 4.3, 4.5, 4.5, 4.5)=4.5<(4.9-0.3). Therefore, the embodiment of the present invention issues a cooling pump energy-saving strategy, and the desired cooling pump frequency setting value F s =F a-S1=44-2=42. Finally, the cooling pump frequency setting value issued by the embodiment of the present invention is 42H z strategy and start continuous monitoring and loop the above steps every minute.

[0103] It is easy to understand that, through real-time monitoring and adjustment, the cooling pump of the embodiment of the present invention can maintain an optimal operating state under different environmental conditions and different load demands, reduce resource waste, and achieve energy-saving goals. Among them, the embodiment of the present invention dynamically adjusts the temperature difference threshold based on the real-time monitored environment and load data to optimize the operating frequency of the cooling pump. At the same time, the embodiment of the present invention realizes real-time monitoring and intelligent adjustment of the cooling pump frequency by introducing sensors and control technology to adapt to changing cooling needs. The embodiment of the present invention introduces intelligent control algorithms and real-time monitoring technologies, so that the frequency of the pump can be dynamically adjusted according to actual needs, which not only improves the operating efficiency of the cooling pump, but also effectively reduces energy consumption.

[0104] See also Fig. 9 The embodiment of the present application also provides an air conditioning cold station adjustment system, which can implement the above-mentioned air conditioning cold station adjustment method, and the system includes:

[0105] The first module 810 is used to obtain preset cold station parameter data, wherein the preset cold station parameter data includes cooling pump working state data and chiller main unit working state data.

[0106] The second module 820 is used to obtain preset wet-bulb temperature data to determine the cooling water temperature difference safety threshold data through a preset safety range table according to the preset wet-bulb temperature data.

[0107] The third module 830 is used to determine the cooling water temperature difference data of the chiller according to the chiller working status data.

[0108] The fourth module 840 is used to determine the cooling pump control mode according to the cooling water temperature difference data of the chiller host and the cooling water temperature difference safety threshold data.

[0109] The fifth module 850 is used to adjust the frequency of the preset cooling pump according to the cooling pump working state data and the cooling pump control mode.

[0110] It can be understood that the contents of the above method embodiments are all applicable to the present system embodiments, the functions specifically implemented by the present system embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0111] The embodiment of the present application also provides an electronic device, the electronic device includes a memory and a processor, the memory stores a computer program, and the processor implements the above-mentioned air conditioning cooling station adjustment method when executing the computer program. The electronic device can be any intelligent terminal including a tablet computer, a car computer, etc.

[0112] It can be understood that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0113] See also Fig.10 , Fig.10 The hardware structure of an electronic device of another embodiment is illustrated, and the electronic device includes:

[0114] The processor 910 may be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present application;

[0115] The memory 920 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 920 can store an operating system and other application programs. When the technical solution provided in the embodiment of this specification is implemented by software or firmware, the relevant program code is stored in the memory 920, and the processor 910 calls and executes the air conditioning cooling station adjustment method of the embodiment of this application;

[0116] Input / output interface 930, used to implement information input and output;

[0117] Communication interface 940, used to realize communication interaction between the device and other devices, which can be realized through wired mode (such as USB, network cable, etc.) or wireless mode (such as mobile network, WIFI, Bluetooth, etc.);

[0118] bus 950 , which transmits information between the various components of the device (e.g., processor 910 , memory 920 , input / output interface 930 , and communication interface 940 );

[0119] The processor 910 , the memory 920 , the input / output interface 930 , and the communication interface 940 are connected to each other in communication within the device via a bus 950 .

[0120] The embodiment of the present application also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the above-mentioned air-conditioning cold station adjustment method is implemented.

[0121] It can be understood that the contents of the above method embodiments are all applicable to the present storage medium embodiments, the functions specifically implemented by the present storage medium embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0122] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0123] The embodiments described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0124] Those skilled in the art will appreciate that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0125] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0126] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0127] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0128] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0129] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the above units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0130] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0131] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0132] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including multiple instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store programs.

[0133] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the rights of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present invention should be within the scope of the rights of the present invention.

Claims

1. An air conditioning cold station adjustment method, characterized in that: The method comprises the following steps: Acquire preset cold station parameter data; wherein the preset cold station parameter data includes cooling pump working status data and chiller main unit working status data; Acquire preset wet-bulb temperature data, and determine cooling water temperature difference safety threshold data through a preset safety range table according to the preset wet-bulb temperature data; Determine the cooling water temperature difference data of the chiller according to the chiller working status data; Determine the cooling pump control mode according to the cooling water temperature difference data of the chiller host and the cooling water temperature difference safety threshold data; The frequency of the preset cooling pump is adjusted according to the cooling pump working state data and the cooling pump control mode.

2. The method according to claim 1, characterized in that The step of obtaining preset wet-bulb temperature data to determine cooling water temperature difference safety threshold data through a preset safety range table according to the preset wet-bulb temperature data includes: Acquire a plurality of the preset wet-bulb temperature data within a first time period, so as to calculate the wet-bulb average temperature data through the preset wet-bulb temperature data; The cooling water temperature difference safety threshold is determined by querying the preset safety range table according to the wet-bulb average temperature data; wherein the preset safety range table includes a wet-bulb temperature range and a cooling water temperature difference safety range, and the wet-bulb temperature range corresponds one-to-one to the cooling water temperature difference safety range.

3. The method according to claim 1, characterized in that The chiller operating status data includes the chiller water supply temperature data, the chiller water return temperature data and the chiller switch status data; Determining the cooling water temperature difference data of the chiller according to the chiller working status data includes: The cooling water temperature difference data of the chiller is calculated according to the water supply temperature data of the chiller, the switch status data of the chiller and the return water temperature data of the chiller; wherein the cooling water temperature difference data of the chiller includes the maximum value of the cooling water temperature difference at each time point in the second time period.

4. The method according to claim 1, characterized in that: The step of determining the cooling pump control mode according to the cooling water temperature difference data of the chiller and the cooling water temperature difference safety threshold data comprises: When it is determined that the minimum temperature difference value in the cooling water temperature difference data of the chiller is greater than the maximum threshold value in the cooling water temperature difference safety threshold data, or the maximum temperature difference value in the cooling water temperature difference data of the chiller is less than the minimum threshold value in the cooling water temperature difference safety threshold data, it is determined that the cooling pump control mode is the safety adjustment mode; Alternatively, when it is determined that the minimum temperature difference value in the cooling water temperature difference data of the chiller is smaller than the maximum threshold value in the cooling water temperature difference safety threshold data, and the maximum temperature difference value in the cooling water temperature difference data of the chiller is larger than the minimum threshold value in the cooling water temperature difference safety threshold data, the cooling pump control mode is determined to be an energy-saving adjustment mode.

5. The method according to claim 4, characterized in that The frequency adjustment of the preset cooling pump according to the cooling pump working state data and the cooling pump control mode includes: When it is determined that the cooling pump control mode is the safety adjustment mode, the expected cooling pump frequency data is calculated according to the cooling pump operating frequency data and the preset frequency adjustment step; Alternatively, when it is determined that the cooling pump control mode is the energy-saving adjustment mode, the target energy-saving adjustment strategy is determined according to the preset weather forecast data and the cooling water temperature difference data of the chiller, so as to obtain the expected cooling pump frequency data by calculating the cooling pump operating frequency data and the preset frequency adjustment step according to the target energy-saving adjustment strategy.

6. The method according to claim 5, characterized in that The method of determining a target energy-saving adjustment strategy according to preset weather forecast data and the cooling water temperature difference data of the chiller, and calculating the expected cooling pump frequency data according to the target energy-saving adjustment strategy through the cooling pump operating frequency data and the preset frequency adjustment step length, includes: When it is determined that the preset weather change data is less than the preset weather change threshold, and the maximum temperature difference in the cooling water temperature difference data of the chiller is less than the first temperature threshold, the target energy-saving adjustment strategy is determined to be a strategy for reducing the operating frequency, and the cooling pump operating frequency data is subtracted from the preset frequency adjustment step to obtain the expected cooling pump frequency data; wherein the preset weather change data is determined by the preset weather forecast data, and the first temperature threshold is obtained by subtracting the preset floating temperature data from the threshold maximum value in the cooling water temperature difference safety threshold data; Alternatively, when it is determined that the preset weather change data is less than the preset weather change threshold, and the minimum temperature difference in the cooling water temperature difference data of the chiller is greater than the second temperature threshold, the target energy-saving adjustment strategy is determined to be an increased operating frequency strategy, and the cooling pump operating frequency data is added to the preset frequency adjustment step to obtain the expected cooling pump frequency data; wherein, the second temperature threshold is obtained by adding the threshold minimum value in the cooling water temperature difference safety threshold data to the preset floating temperature data.

7. The method according to claim 1, characterized in that After performing the step of obtaining the preset cold station parameter data, the method further includes: The preset cold station parameter data is subjected to data preprocessing; wherein the data preprocessing includes abnormal data deletion processing and missing data filling processing.

8. An air conditioning cold station regulation system, characterized in that: The system comprises: The first module is used to obtain preset cold station parameter data; wherein the preset cold station parameter data includes cooling pump working status data and chiller main unit working status data; The second module is used to obtain preset wet-bulb temperature data, so as to determine the cooling water temperature difference safety threshold data through a preset safety range table according to the preset wet-bulb temperature data; The third module is used to determine the cooling water temperature difference data of the chiller according to the working status data of the chiller; A fourth module is used to determine a cooling pump control mode according to the cooling water temperature difference data of the chiller and the cooling water temperature difference safety threshold data; The fifth module is used to adjust the frequency of the preset cooling pump according to the cooling pump working status data and the cooling pump control mode.

9. An electronic device, characterized in that: include: at least one processor; at least one memory for storing at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the method according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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