Air conditioning cold station adjusting method and system, electronic device and storage medium

Abstract

The application discloses an air conditioner cold station adjusting method and system, an electronic device and a storage medium. The method comprises the following steps: acquiring preset cold station parameter data; wherein the preset cold station parameter data comprises cooling pump working state data and cold water main working state data; acquiring preset wet bulb temperature data, so as to determine cooling water temperature difference safety threshold data through a preset safety range table according to the preset wet bulb temperature data; determining cold water main cooling water temperature difference data according to the cold water main working state data; determining a cooling pump control mode according to the cold water main cooling water temperature difference data and the cooling water temperature difference safety threshold data; and performing frequency adjustment on a preset cooling pump according to the cooling pump working state data and the cooling pump control mode. The embodiment of the application can realize dynamic adjustment of the cooling pump, effectively improve the operation efficiency of the cooling pump, and reduce energy consumption. The application can be widely applied to the technical field of cold station control.

Description

Technical Field

[0001] This application relates to the field of chiller plant control technology, and in particular to an air conditioning chiller plant regulation method, system, electronic equipment and storage medium. Background Technology

[0002] Cooling pumps play a crucial role in the cooling source of central air conditioning systems, responsible for circulating cooling water to the refrigeration unit to maintain its normal operation. However, cooling pump energy consumption accounts for a significant proportion of the overall system energy consumption, especially under high load or extreme weather conditions where energy consumption needs to be reduced. In related technologies, cooling pump operation modes are typically based on PID control with a fixed operating frequency or fixed temperature difference, resulting in low operating efficiency and high energy consumption.

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

[0004] The main objective of this application is to provide an air conditioning chiller regulation method, system, electronic device, and storage medium that can realize dynamic regulation of the cooling pump, effectively improve the operating efficiency of the cooling pump, and reduce energy consumption.

[0005] To achieve the above objectives, one aspect of this application proposes an air conditioning chiller regulation method, the method comprising the following steps:

[0006] Acquire preset chiller plant parameter data; wherein, the preset chiller plant parameter data includes cooling pump operating status data and chiller unit operating status data;

[0007] Obtain preset wet-bulb temperature data, and determine the cooling water temperature difference safety threshold data based on the preset wet-bulb temperature data and a preset safety range table;

[0008] The chiller cooling water temperature difference data is determined based on the chiller operating status data.

[0009] The cooling pump control mode is determined based on the cooling water temperature difference data of the chiller and the cooling water temperature difference safety threshold data.

[0010] The frequency of the preset cooling pump is adjusted based on the cooling pump operating status data and the cooling pump control mode.

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

[0012] Acquire several preset wet-bulb temperature data within a first time period, and calculate the average wet-bulb temperature data using the preset wet-bulb temperature data;

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

[0014] In some embodiments, the chiller operating status data includes chiller supply water temperature data, chiller return water temperature data, and chiller on / off status data.

[0015] Determining the chiller cooling water temperature difference data based on the chiller's operating status data includes:

[0016] The chiller cooling water temperature difference data is calculated based on the chiller supply water temperature data, the chiller switch status 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 within the second time period.

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

[0018] When it is determined that the minimum temperature difference in the chiller's cooling water temperature difference data is greater than the maximum threshold in the cooling water temperature difference safety threshold data, or when the maximum temperature difference in the chiller's cooling water temperature difference data is less than the minimum threshold in the cooling water temperature difference safety threshold data, the cooling pump control mode is determined to be a safe adjustment mode.

[0019] Alternatively, if it is determined that the minimum temperature difference in the chiller's cooling water temperature difference data is less than the maximum threshold in the cooling water temperature difference safety threshold data, and the maximum temperature difference in the chiller's cooling water temperature difference data is greater than the minimum threshold in the cooling water temperature difference safety threshold data, then the cooling pump control mode is determined to be an energy-saving adjustment mode.

[0020] In some embodiments, adjusting the frequency of the preset cooling pump based on the cooling pump operating status data and the cooling pump control mode includes:

[0021] When the cooling pump control mode is determined to be the safety adjustment mode, the desired cooling pump frequency data is calculated based on the cooling pump operating frequency data and the preset frequency adjustment step size.

[0022] Alternatively, when the cooling pump control mode is determined to be the energy-saving adjustment mode, a target energy-saving adjustment strategy is determined based on preset weather forecast data and the cooling water temperature difference data of the chiller host, and the desired cooling pump frequency data is calculated based on the target energy-saving adjustment strategy using the cooling pump operating frequency data and a preset frequency adjustment step size.

[0023] In some embodiments, determining a target energy-saving adjustment strategy based on preset weather forecast data and the chiller cooling water temperature difference data, and calculating the desired cooling pump frequency data based on the target energy-saving adjustment strategy using the cooling pump operating frequency data and a preset frequency adjustment step size, includes:

[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 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 to reduce the operating frequency, and the desired cooling pump frequency data is obtained by subtracting the preset frequency adjustment step size from the cooling pump operating 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 maximum threshold 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 chiller cooling water temperature difference data is greater than the second temperature threshold, the target energy-saving adjustment strategy is determined to be an increased operating frequency strategy, and the desired cooling pump frequency data is obtained by adding the preset frequency adjustment step size to the cooling pump operating frequency data; wherein, the second temperature threshold is obtained by adding the minimum threshold in the cooling water temperature difference safety threshold data to the preset floating temperature data.

[0026] In some embodiments, after obtaining the preset cooling plant parameter data, the method further includes:

[0027] The preset cooling station parameter data is preprocessed; wherein, the data preprocessing includes abnormal data deletion and missing data filling.

[0028] To achieve the above objectives, another aspect of this application provides an air conditioning chiller plant regulation system, the system comprising:

[0029] The first module is used to acquire preset chiller plant parameter data; wherein, the preset chiller plant parameter data includes cooling pump operating status data and chiller unit operating status data;

[0030] The second module is used to acquire preset wet-bulb temperature data, and to determine the cooling water temperature difference safety threshold data based on the preset wet-bulb temperature data and a preset safety range table.

[0031] The third module is used to determine the cooling water temperature difference data of the chiller based on the chiller's operating status data.

[0032] The fourth module is used to determine the cooling pump control mode based on 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 based on the cooling pump operating status data and the cooling pump control mode.

[0034] To achieve the above objectives, another aspect of this 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 performs the method described above.

[0038] To achieve the above objectives, another aspect of the embodiments of this application proposes a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method.

[0039] The embodiments of this application include at least the following beneficial effects: This application provides an air conditioning chiller plant regulation method, system, electronic device, and storage medium. This scheme first acquires preset chiller plant parameter data, including cooling pump operating status data and chiller unit operating status data. Simultaneously, the embodiments of this invention acquire preset wet-bulb temperature data, and determine cooling water temperature difference safety threshold data based on the preset wet-bulb temperature data and a preset safety range table. Next, the embodiments of this invention determine chiller unit cooling water temperature difference data based on chiller unit operating status data, and then determine the cooling pump control mode based on the chiller unit cooling water temperature difference data and the cooling water temperature difference safety threshold data. Finally, the embodiments of this invention adjust the preset cooling pump frequency based on the cooling pump operating frequency data and the cooling pump control mode, thereby achieving dynamic regulation of the air conditioning chiller plant's cooling pump. It is easily understood that the embodiments of this invention, by determining the cooling pump control mode through chiller unit cooling water temperature difference data and the cooling water temperature difference safety threshold data, and then combining this with the cooling pump operating frequency data to adjust the preset cooling pump frequency, can effectively improve the operating efficiency of the cooling pump and reduce energy consumption. Attached Figure Description

[0040] Figure 1 This is a flowchart of the air conditioning chiller plant adjustment method provided in the embodiments of the present invention;

[0041] Figure 2 This is a flowchart provided by an embodiment of the present invention for obtaining preset wet-bulb temperature data and determining the cooling water temperature difference safety threshold data based on the preset wet-bulb temperature data through a preset safety range table;

[0042] Figure 3 This is a flowchart provided by an embodiment of the present invention for determining the cooling water temperature difference data of the chiller based on the operating status data of the chiller;

[0043] Figure 4 This is a flowchart provided by an embodiment of the present invention for determining the cooling pump control mode based on the cooling water temperature difference data of the chiller and the cooling water temperature difference safety threshold data;

[0044] Figure 5 This is a flowchart provided by an embodiment of the present invention for adjusting the frequency of a preset cooling pump based on cooling pump operating frequency data and cooling pump control mode;

[0045] Figure 6 This is a flowchart provided by an embodiment of the present invention to determine a target energy-saving adjustment strategy based on preset weather forecast data and chiller cooling water temperature difference data, and to calculate the desired cooling pump frequency data based on the target energy-saving adjustment strategy through cooling pump operating frequency data and preset frequency adjustment step size.

[0046] Figure 7 This is a flowchart of data preprocessing for preset cooling plant parameter data provided in an embodiment of the present invention;

[0047] Figure 8 This is a flowchart illustrating the overall structure of the air conditioning chiller plant regulation provided in this embodiment of the invention;

[0048] Figure 9 This is a schematic diagram of the structure of the air conditioning chiller station regulation system provided in an embodiment of the present invention;

[0049] Figure 10 This is a schematic diagram of the hardware structure of the electronic device provided in an embodiment of the present invention. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit it. In the following description, when referring to the accompanying 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 those of this application; they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this application as detailed in the appended claims.

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

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

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

[0054] Before providing a detailed description of the embodiments of this application, some of the nouns and terms involved in the embodiments of this application will be explained first. The nouns and terms involved in the embodiments of this application are subject to the following interpretations.

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

[0056] Water-cooled pumps are pumps that use liquid working fluids (such as water or specific coolants) for cooling. They achieve liquid transportation or shaft power transmission by utilizing the continuous and compressible properties of liquids.

[0057] Chiller unit: also known as water-cooled radiator, is a key component of air conditioning system. It uses cooling water as a cooling medium to remove heat from the room through heat exchange, thereby achieving a cooling effect.

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

[0059] Cooling pumps play a crucial role in the cooling source of central air conditioning systems, responsible for circulating cooling water to the refrigeration unit to maintain its normal operation. However, cooling pump energy consumption accounts for a significant proportion of the overall system energy consumption, especially under high load or extreme weather conditions where energy reduction is necessary. In related technologies, cooling pump operation modes are typically based on fixed operating frequencies or fixed temperature difference PID control, resulting in low operating efficiency and high energy consumption. For example, traditional cooling pump operation modes are usually based on fixed frequencies. This fixed operating mode causes the cooling pump to operate at full load even under low loads, resulting in unnecessary energy waste, increased operating costs, and an inability to effectively cope with temperature and load variations. Furthermore, current cooling systems often rely on fixed temperature difference thresholds to regulate cooling pump operation. These fixed thresholds cannot adapt to real-time changes in environmental conditions, leading to low cooling efficiency and increased energy consumption. Simultaneously, cooling pump control often lacks real-time monitoring and intelligent adjustment functions, failing to fully utilize data analysis and algorithm optimization strategies.

[0060] In view of this, this application provides an air conditioning chiller plant regulation method, system, electronic device, and storage medium. This scheme first acquires preset chiller plant parameter data, including cooling pump operating status data and chiller unit operating status data. Simultaneously, this embodiment acquires preset wet-bulb temperature data to determine a cooling water temperature difference safety threshold based on the preset wet-bulb temperature data and a preset safety range table. Next, this embodiment determines the chiller unit cooling water temperature difference data based on the chiller unit operating status data, and then determines the cooling pump control mode based on the chiller unit cooling water temperature difference data and the cooling water temperature difference safety threshold data. Finally, this embodiment adjusts the preset cooling pump frequency based on the cooling pump operating frequency data and the cooling pump control mode, thereby achieving dynamic regulation of the air conditioning chiller plant's cooling pump, effectively improving the cooling pump's operating efficiency and reducing energy consumption.

[0061] The air conditioning chiller regulation method provided in this application relates to the field of chiller energy-saving technology. The air conditioning chiller regulation method provided in this application can be applied to a terminal, a server, or software running on a terminal or server. In some embodiments, the terminal can be a smartphone, tablet, laptop, desktop computer, smart speaker, smartwatch, or vehicle terminal, but is not limited to these. The server can be configured as an independent physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, 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 implementing the air conditioning chiller regulation method, but is not limited to the above forms.

[0062] This application can be used in a wide variety of general-purpose or special-purpose computer system environments or configurations. Examples include: 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, and distributed computing environments including any of the above systems or devices. This 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. This application can also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communication network. In distributed computing environments, program modules can reside in local and remote computer storage media, including storage devices.

[0063] Figure 1 This is an optional flowchart of the air conditioning chiller plant regulation method provided in the embodiments of this application. Figure 1 The method may include, but is not limited to, steps S110 to S150.

[0064] Step S110: Obtain preset chiller plant parameter data. The preset chiller plant parameter data includes cooling pump operating status data and chiller unit operating status data.

[0065] Step S120: Obtain preset wet-bulb temperature data, and determine the cooling water temperature difference safety threshold data based on the preset wet-bulb temperature data and the preset safety range table.

[0066] Step S130: Determine the cooling water temperature difference data of the chiller based on the chiller's operating status data.

[0067] Step S140: Determine the cooling pump control mode based on the chiller's cooling water temperature difference data and the cooling water temperature difference safety threshold data.

[0068] Step S150: Adjust the frequency of the preset cooling pump according to the cooling pump operating status data and cooling pump control mode.

[0069] In the operation of this specific embodiment, the present invention first acquires preset chiller station parameter data. Specifically, the preset chiller station parameter data in this embodiment includes cooling pump operating status data and chiller unit operating status data. The cooling pump operating status data refers to the operating parameters of the corresponding cooling pump in the air conditioning chiller station, such as operating frequency. Correspondingly, the chiller unit operating status data refers to the operating parameters of the corresponding chiller unit in the air conditioning chiller station, such as water temperature data and on / off status. Next, the present invention acquires preset wet-bulb temperature data to determine the cooling water temperature difference safety threshold data based on the preset wet-bulb temperature data and a preset safety range table. Specifically, the preset wet-bulb temperature data in this embodiment refers to the outdoor air wet-bulb temperature data. Correspondingly, the preset safety range table is a table storing cooling water temperature difference safety range data. The present invention queries the table of cooling water temperature difference safety range data, i.e., the preset safety range table, based on the acquired preset wet-bulb temperature data to determine the cooling water temperature difference safety threshold data. Next, this embodiment of the invention determines the chiller cooling water temperature difference data based on the chiller's operating status data, and then determines the cooling pump control mode based on the chiller's cooling temperature difference data and the cooling water temperature difference safety threshold data. Specifically, in this embodiment, the chiller cooling water temperature difference data refers to the temperature difference between the chiller's supply and return cooling water. Accordingly, this embodiment analyzes the relationship between the chiller's cooling temperature difference data and the cooling water temperature difference safety threshold data to determine the necessary adjustment method for the preset cooling pump, i.e., the cooling pump control mode. Finally, this embodiment adjusts the frequency of the preset cooling pump based on the cooling pump's operating status data and the cooling pump control mode. Specifically, this embodiment determines the adjustment parameters for the preset cooling pump based on the cooling pump control mode and the current operating status of the preset cooling pump, i.e., the cooling pump operating status data, and then adjusts the frequency of the preset cooling pump according to the corresponding adjustment parameters, thereby achieving dynamic adjustment of the cooling pump, effectively improving the cooling pump's operating efficiency and reducing energy consumption.

[0070] Reference Figure 2 In some embodiments of the present invention, preset wet-bulb temperature data is obtained, and cooling water temperature difference safety threshold data is determined based on the preset wet-bulb temperature data and a preset safety range table, including but not limited to the following steps:

[0071] Step S210: Obtain several preset wet-bulb temperature data within the first time period, and calculate the average wet-bulb temperature data using the preset wet-bulb temperature data.

[0072] Step S220: Determine the safe threshold for cooling water temperature difference by querying a preset safe range table based on the wet-bulb average temperature data. The preset safe range table includes wet-bulb temperature ranges and safe cooling water temperature difference ranges, with each range corresponding to the other.

[0073] In this specific embodiment, the present invention first acquires several preset wet-bulb temperature data within a first time period, calculates the average wet-bulb temperature data using the element wet-bulb temperature data, and then determines the cooling water temperature difference safety threshold by querying a preset safety range table based on the average wet-bulb temperature data. Specifically, in this embodiment, the first time period refers to a pre-set data acquisition duration, such as 15 minutes. Within the first time period, the present invention acquires several preset wet-bulb temperature data points and averages these data points to obtain the average wet-bulb temperature data. For example, the present invention acquires the outdoor wet-bulb temperature every minute within 15 minutes, thereby obtaining 15 preset wet-bulb temperature data points, and then averages them to obtain the average wet-bulb temperature data. Correspondingly, the present invention constructs a preset safety range table based on the wet-bulb temperature range and the cooling water temperature difference safety range. The wet-bulb temperature range and the cooling water temperature difference safety range correspond one-to-one. For example, the cooling water temperature difference safety range table corresponding to the wet-bulb temperature range set in this embodiment is shown in Table 1 below:

[0074] Table 1

[0075]

[0076] Accordingly, in this embodiment of the invention, a unique cooling water temperature difference safety threshold can be obtained by querying a preset safety range table based on the corresponding wet-bulb average temperature data. For example, in this embodiment of the invention, the wet-bulb average temperature data T during the first time period... wb In (T) wbmin2 ,T wbmax2 If the temperature difference is within the range of [T], then the safe threshold for cooling water temperature difference obtained from the 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 chiller supply water temperature data, chiller return water temperature data, and chiller on / off status data. Accordingly, the chiller cooling water temperature difference data is determined based on the chiller operating status data, including but not limited to the following steps:

[0078] Step S310: Calculate the chiller cooling water temperature difference data based on the chiller supply water temperature data, chiller on / off status data, and chiller return water temperature data. The chiller cooling water temperature difference data includes the maximum cooling water temperature difference at each time point within the second time period.

[0079] In this specific embodiment, the chiller supply water temperature data refers to the feedback value of the chiller supply water temperature within a data acquisition period, and the chiller return water temperature data refers to the feedback value of the chiller return water temperature within a data acquisition period. Correspondingly, the chiller on / off status data refers to the operating status of the chiller at each data acquisition moment, such as whether the chiller is in an on or off state. Specifically, this embodiment calculates the chiller cooling water temperature difference data by combining the chiller supply water temperature data, chiller on / off status data, and chiller return water temperature data. Specifically, this embodiment first calculates the supply and return water temperature difference at each acquisition point based on the chiller supply water temperature data and chiller return water temperature data at a certain moment. Then, this embodiment determines the cooling water temperature difference data at each acquisition point by combining the chiller on / off status data at that moment, and takes the largest temperature difference as the cooling water temperature difference data at that moment. Correspondingly, this embodiment calculates the maximum cooling water temperature difference at each time point within the second time period using the above method, thereby obtaining the chiller cooling water temperature difference data.

[0080] Combination Figure 1 , refer to Figure 4 In some embodiments of the present invention, the cooling pump control mode is determined based on the chiller cooling water temperature difference data 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 in the chiller's cooling water temperature difference data is greater than the maximum threshold in the cooling water temperature difference safety threshold data, or the maximum temperature difference in the chiller's cooling water temperature difference data is less than the minimum threshold 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 in the chiller's cooling water temperature difference data is less than the maximum threshold in the cooling water temperature difference safety threshold data, and the maximum temperature difference in the chiller's cooling water temperature difference data is greater than the minimum threshold 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 present invention determines the cooling pump control mode by comparing the cooling water temperature difference data of the chiller with the cooling water temperature difference safety threshold data. Specifically, the present invention first compares the minimum temperature difference in the chiller cooling water temperature difference data with the maximum threshold value in the cooling water temperature difference safety threshold data to determine whether the minimum temperature difference is greater than the maximum threshold value. If the minimum temperature difference is greater than the maximum threshold value, it indicates that the current cooling water temperature difference is abnormal and has exceeded the maximum value of the cooling water temperature difference safety threshold, requiring safety adjustment control. Therefore, the desired cooling pump control mode is determined to be the safety adjustment mode. Alternatively, the present invention compares whether the maximum temperature difference in the chiller cooling water temperature difference data is less than the minimum threshold value in the cooling water temperature difference safety threshold to determine whether the temperature difference is lower than the minimum value of the cooling water temperature difference safety threshold. If the maximum temperature difference is less than the minimum threshold value, it indicates that the temperature difference has been lower than the minimum value of the cooling water temperature difference safety threshold for a second time period. Therefore, the desired cooling pump control mode is determined to be the safety adjustment mode to perform safety adjustment control on the cooling pump. In addition, if the minimum temperature difference in the chiller's cooling water temperature difference data is less than the maximum threshold in the cooling water temperature difference safety threshold data, and the maximum temperature difference in the chiller's cooling water temperature difference data is greater than the minimum threshold in the cooling water temperature difference safety threshold data, then it means that the current temperature difference is within the safe range of the cooling water temperature difference, 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 activate 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 based on cooling pump operating status data and cooling pump control mode, including but not limited to the following steps:

[0085] Step S510: When the cooling pump control mode is determined to be the safety adjustment mode, the desired cooling pump frequency data is calculated based on the cooling pump operating frequency data and the preset frequency adjustment step size.

[0086] Step S520: When the cooling pump control mode is determined to be energy-saving adjustment mode, the target energy-saving adjustment strategy is determined based on the preset weather forecast data and the cooling water temperature difference data of the chiller. The desired cooling pump frequency data is then calculated based on the target energy-saving adjustment strategy using the cooling pump operating frequency data and the preset frequency adjustment step size.

[0087] In this specific embodiment, when the cooling pump control mode is the safety adjustment mode, the embodiment calculates the desired cooling frequency data based on the cooling pump operating frequency data and the preset frequency adjustment step size. Specifically, the cooling pump operating status data in this embodiment includes cooling pump operating frequency data and cooling pump on / off status data. The cooling pump operating frequency refers to the preset cooling pump frequency setting value, i.e., the current preset cooling pump operating frequency, while the cooling pump on / off status data refers to information about whether the preset cooling pump is currently in an on or off state. Correspondingly, when it is determined that the minimum temperature difference in the chiller cooling water temperature difference data is greater than the maximum threshold value in the cooling water temperature difference safety threshold data, it indicates that the temperature difference has exceeded the cooling water temperature difference safety range, and an instruction to increase the cooling pump frequency needs to be issued. At this time, the desired cooling pump frequency data is obtained by adding the preset frequency adjustment step size to the cooling pump operating frequency data. The preset frequency adjustment step size refers to the adjustment range each time, which can be obtained through pre-defined settings. Additionally, if the maximum temperature difference in the chiller's cooling water temperature difference data is less than the minimum threshold in the cooling water temperature difference safety threshold data, it indicates that the temperature difference is below the safe range for cooling water temperature difference, and an instruction to reduce the cooling pump frequency needs to be issued. In this case, the desired cooling pump frequency data is obtained by subtracting the preset frequency adjustment step size from the cooling pump operating frequency data.

[0088] Furthermore, when the cooling pump control mode is determined to be energy-saving adjustment mode, this embodiment of the invention determines a target energy-saving adjustment strategy based on preset weather forecast data and chiller cooling water temperature difference data. Then, based on the target energy-saving adjustment strategy, the desired cooling pump frequency data is calculated using cooling pump operating frequency data and a preset adjustment step size. Specifically, in this embodiment of the invention, the preset weather forecast data refers to weather forecast information for a preset future time period, such as temperature information for the next 4 hours. Accordingly, this embodiment of the invention first obtains the preset weather forecast data to determine whether the temperature change trend within the preset future time period is stable. Further, this embodiment of the invention determines whether the current temperature difference data meets energy-saving conditions based on the future weather change trend and chiller cooling water temperature difference data, thereby determining the corresponding target energy-saving adjustment strategy, such as increasing or decreasing the cooling pump frequency. Finally, based on the determined target energy-saving adjustment strategy, this embodiment of the invention calculates the desired cooling pump frequency data using cooling pump operating frequency data and a preset frequency adjustment step size according to the corresponding calculation method.

[0089] Combination Figure 5 , refer to Figure 6 In some embodiments of the present invention, a target energy-saving adjustment strategy is determined based on preset weather forecast data and chiller cooling water temperature difference data. The desired cooling pump frequency data is then calculated based on the target energy-saving adjustment strategy using cooling pump operating frequency data and a preset frequency adjustment step size. This includes, but is 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's cooling water temperature difference data is less than the first temperature threshold, the target energy-saving adjustment strategy is determined to be a strategy to reduce the operating frequency. The desired cooling pump frequency data is obtained by subtracting the preset frequency adjustment step size from the cooling pump operating 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 maximum threshold 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's cooling water temperature difference data is greater than the second temperature threshold, the target energy-saving adjustment strategy is determined to be an increased operating frequency strategy, and the desired cooling pump frequency data is obtained by adding a preset frequency adjustment step size to the cooling pump operating frequency data. The second temperature threshold is obtained by adding a preset floating temperature data to the minimum threshold in the cooling water temperature difference safety threshold data.

[0092] In this specific embodiment, the present invention first determines the target energy-saving adjustment strategy by judging whether preset weather change data is less than a preset weather change threshold, and simultaneously judging whether the maximum temperature difference in the chiller cooling water temperature difference data is less than a first temperature threshold. Specifically, in this embodiment, the preset weather change threshold refers to a pre-set threshold data indicating a stable weather temperature change trend. Accordingly, the preset weather change data in this embodiment is determined by preset weather forecast data, representing the weather changes within a preset future time period, and is calculated by the difference between the highest and lowest temperature values ​​within that time period. Furthermore, in this embodiment, the first temperature threshold is obtained by subtracting the preset floating temperature data from the maximum threshold value in the cooling water temperature difference safety threshold. The preset floating temperature refers to a pre-set energy-saving floating temperature. For example, when the preset weather change data is determined to be less than the preset weather change threshold, it indicates that the weather change trend within the preset future time period is stable. Next, the present invention judges whether the maximum temperature difference in the chiller cooling water temperature difference data is less than the first temperature threshold obtained by subtracting the preset floating temperature data from the maximum threshold value in the cooling water temperature difference safety threshold data. When the maximum temperature difference is determined to be less than a first temperature threshold, it indicates that the operating frequency of the cooling pump can be reduced, meaning the target energy-saving adjustment strategy is to reduce the operating frequency. In this case, the embodiment of the invention obtains the desired cooling pump frequency data by subtracting a preset frequency adjustment step size from the current cooling pump operating frequency. Alternatively, when the preset weather change data is determined to be less than a preset weather change threshold, and the minimum temperature difference in the chiller cooling water temperature difference data is greater than a second temperature threshold, it indicates that the operating frequency of the cooling pump can be increased, meaning the target energy-saving adjustment strategy is to increase the operating frequency. In this embodiment, the second temperature threshold is obtained by adding a preset floating temperature data to the minimum threshold in the cooling water temperature difference safety threshold data. Accordingly, the embodiment of the invention obtains the desired cooling pump frequency data by adding a preset frequency adjustment step size 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 preset chiller plant parameter data, the air conditioning chiller plant adjustment method provided by the embodiments of the present invention further includes, but is not limited to, the following steps:

[0094] Step S710: Perform data preprocessing on the preset cooling plant parameter data. This data preprocessing includes deleting abnormal data and filling in missing data.

[0095] In the operation of this specific embodiment, after acquiring the preset chiller station parameter data, the present invention performs data preprocessing on the corresponding chiller station parameter data. Specifically, to facilitate subsequent data analysis and processing and improve the accuracy and completeness of the data, the present invention performs abnormal data deletion and missing data filling processing on the collected preset chiller station parameter data, such as chiller supply water temperature data, chiller return water temperature data, chiller switch status data, cooling pump operating frequency data, cooling pump switch status data, and preset wet-bulb temperature data. Abnormal data refers to values ​​that are significantly different from most data points (outliers). Deleting abnormal data improves the accuracy and reliability of the data. Correspondingly, missing data refers to values ​​missing due to various reasons (such as omissions, equipment failures, etc.). Filling in missing data through interpolation effectively improves the accuracy and reliability of the data.

[0096] The following is a detailed introduction and explanation of the solution of the present invention, using specific application examples of air conditioning chiller plant regulation:

[0097] For example, refer to Figure 8 , Figure 8 This is a flowchart illustrating the overall structure of the air conditioning chiller plant regulation provided in this embodiment of the invention. Specifically, this embodiment first collects parameters such as the operating status of the cooling pump and the operating status of the chiller. For example, it collects the current minute's cooling pump frequency setpoint, cooling pump on / off status feedback value, current minute's chiller on / off status feedback value, chiller cooling water supply and return water temperature feedback value per minute over the past 15 minutes, outdoor wet-bulb temperature, and weather forecast data for the next 4 hours. Next, this embodiment performs data preprocessing on the collected data, including deleting abnormal data and interpolating and filling missing data. Further, it determines the current cooling water temperature difference safety threshold data through a preset table of cooling water temperature difference ranges corresponding to preset wet-bulb temperature value ranges, and simultaneously calculates the maximum value of the chiller cooling water temperature difference per minute over the past 15 minutes as (Δ1, Δ2, ..., Δ15). Then, this embodiment calculates the average operating frequency F of the activated cooling pump. a Set the cooling pump frequency adjustment step size S1, and the cooling pump frequency adjustment lower limit F. l And the upper limit of cooling pump frequency adjustment F h Next, the embodiments of the present invention compare (Δ1, Δ2, ..., Δ15) with T. min and T max The size is determined by checking 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, thereby determining the type of the next strategy. Finally, the cooling pump frequency strategy F is issued. sThe system is connected to the group control system and continuously monitored.

[0098] For example, taking a chiller plant in a certain project as an example, the parameter data collected in this embodiment of the invention includes: cooling pump switch status feedback value: (1, 0, 1, 1, 0, 1); cooling pump frequency setting value: (44, 0, 44, 44, 0, 44); chiller switch status feedback value: (1, 0, 1, 1, 0, 1); taking the first minute as an example, chiller cooling water supply temperature feedback value: (34.3, 34.5, 33.8, 33.1, 33.3, 33.5), 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). Meanwhile, this embodiment of the invention obtains the outdoor wet-bulb temperature every minute over the past 15 minutes and averages the 15 outdoor wet-bulb temperatures, calculating the average outdoor wet-bulb temperature over the 15 minutes to be 27.5 degrees Celsius. Accordingly, this embodiment of the invention sets an energy-saving strategy floating temperature T. f =0.3 degrees Celsius. The table below shows the safe range of cooling water temperature difference corresponding to the wet-bulb temperature range.

[0099] Table 2

[0100]

[0101] Accordingly, based on the average outdoor wet-bulb temperature of 27.5 degrees Celsius over 15 minutes, the safe threshold for cooling water temperature difference is [3.0, 4.7]. Next, this invention example calculates the maximum value of the host cooling water temperature difference per minute over the past 15 minutes. Taking the first minute as an example, the maximum value of the host cooling water temperature difference upon startup 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 cooling water temperature difference for each minute is calculated sequentially, resulting in the following maximum cooling water temperature difference per minute for the main unit over the past 15 minutes: (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). Correspondingly, this embodiment of the invention calculates the cooling pump operating frequency data by averaging the cooling pump switch status feedback value and the cooling pump frequency setpoint. 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. Meanwhile, in this embodiment of the invention, the cooling pump frequency adjustment step size S1 = 2H is set. z Cooling pump frequency adjustment lower limit Fl =35H z Cooling pump frequency adjustment upper limit F h =48H z Further, in this embodiment of the 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 protection strategy is executed, and the cooling pump frequency setting value F... s =F a +S1=44+2=46. Finally, the cooling pump frequency setting value was issued as 46H. z The adjustment strategy was implemented, and continuous monitoring began, with a cycle frequency of one minute.

[0102] For example, taking another project's chiller plant as an example, the parameter data collected in this embodiment of the invention includes: cooling pump switch status feedback value: (1, 0, 1, 1, 0, 1); cooling pump frequency setting value: (44, 0, 44, 44, 0, 44); chiller switch status feedback value: (1, 0, 1, 1, 0, 1); taking the first minute as an example, chiller cooling water supply temperature feedback value: (32.0, 34.5, 31.4, 31.5, 33.3, 31.2), 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). Meanwhile, this embodiment of the invention obtains the outdoor wet-bulb temperature every minute over the past 15 minutes and averages the 15 outdoor wet-bulb temperatures, calculating the average outdoor wet-bulb temperature over the 15 minutes to be 25.5 degrees Celsius. Accordingly, this embodiment of the invention sets an energy-saving strategy floating temperature T. f=0.3 degrees Celsius. The table of safe cooling water temperature difference range corresponding to the wet-bulb temperature range is also shown in Table 2 above. Therefore, based on the average outdoor wet-bulb temperature of 27.5 degrees Celsius over 15 minutes, the cooling water temperature difference threshold is [3.0, 4.9]. Then, in this invention example, the maximum value of the host cooling water temperature difference per minute over the past 15 minutes is calculated. Taking the first minute as an example, the maximum value of the host cooling water temperature difference 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, this embodiment of the invention calculates the maximum temperature difference for each minute, obtaining the maximum temperature difference of the main unit's cooling water per minute over the past 15 minutes as: (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). Simultaneously, this embodiment of the 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. Additionally, in this embodiment of the invention, the cooling pump frequency adjustment step size S1 = 2H is set. z Cooling pump frequency adjustment lower limit F l =35H z Cooling pump frequency adjustment upper limit F h =48H z Furthermore, in this embodiment of the 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]. Meanwhile, 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, and 4.5 is greater than 3 in the cooling water temperature difference threshold [3, 4.9]. Therefore, no security protection strategy is currently generated, and this embodiment of the invention further determines whether conditions allow for the activation of an energy-saving strategy. Accordingly, this embodiment of the invention selects a method of reducing the cooling pump frequency to save energy. The weather forecast for the next 4 hours is (27, 28, 28, 28), where 28-27 = 1 < 2, indicating a stable trend. Furthermore, 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, this embodiment of the 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, in this embodiment of the invention, the cooling pump frequency setting value is 42H. z The strategy was implemented, and continuous monitoring began, with the above steps repeated every minute.

[0103] It is readily understood that, through real-time monitoring and adjustment, the cooling pump can maintain optimal operating conditions under different environmental conditions and load demands, reducing resource waste and achieving energy-saving goals. Specifically, based on real-time monitored environmental and load data, the embodiments of the present invention dynamically adjust the temperature difference threshold to optimize the operating frequency of the cooling pump. Simultaneously, by introducing sensor and control technologies, the embodiments of the present invention achieve real-time monitoring and intelligent adjustment of the cooling pump frequency to adapt to changing cooling demands. By introducing intelligent control algorithms and real-time monitoring technology, the embodiments of the present invention can dynamically adjust the pump frequency according to actual needs, not only improving the operating efficiency of the cooling pump but also effectively reducing energy consumption.

[0104] Please see Figure 9 This application also provides an air conditioning chiller plant regulation system that can implement the above-mentioned air conditioning chiller plant regulation method. The system includes:

[0105] The first module 810 is used to acquire preset chiller plant parameter data. This preset chiller plant parameter data includes cooling pump operating status data and chiller unit operating status data.

[0106] The second module 820 is used to acquire preset wet-bulb temperature data, and to determine the cooling water temperature difference safety threshold data based on the preset wet-bulb temperature data and a preset safety range table.

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

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

[0109] The fifth module 850 is used to adjust the frequency of the preset cool pump based on the cool pump operating status data and the cool pump control mode.

[0110] It is understood that the content of the above method embodiments is applicable to this system embodiment. The specific functions implemented in this system embodiment are the same as those in the above method embodiments, and the beneficial effects achieved are also the same as those achieved in the above method embodiments.

[0111] This application also provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the above-described air conditioning chiller regulation method. This electronic device can be any smart terminal, including a tablet computer, a vehicle-mounted computer, or similar device.

[0112] It is understood that the content of the above method embodiments is applicable to this device embodiment. The specific functions implemented by this device embodiment 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] Please see Figure 10 , Figure 10 The hardware structure of an electronic device according to another embodiment is illustrated. The electronic device includes:

[0114] The processor 910 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, 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 this application.

[0115] The memory 920 can be implemented as a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM). The memory 920 can store the operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 920 and called by the processor 910 to execute the air conditioning chiller station regulation method of the embodiments of this application.

[0116] The input / output interface 930 is used to implement information input and output;

[0117] The communication interface 940 is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, network cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

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

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

[0120] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described air conditioning chiller regulation method.

[0121] It is understood that the content of the above method embodiments is applicable to this storage medium embodiment. The specific functions implemented in this storage medium embodiment are the same as those in the above method embodiments, and the beneficial effects achieved are also the same as those achieved in the above method embodiments.

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

[0123] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

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

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

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

[0127] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0128] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0129] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

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

[0131] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0132] If the integrated unit is implemented as 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 this application, in essence, 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. This computer software product is stored in a storage medium and includes multiple instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing programs, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0133] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A method for regulating an air conditioning chiller, characterized in that, The method includes the following steps: Acquire preset chiller plant parameter data; wherein, the preset chiller plant parameter data includes cooling pump operating status data and chiller unit operating status data; Obtain preset wet-bulb temperature data, and determine the cooling water temperature difference safety threshold data based on the preset wet-bulb temperature data and a preset safety range table; The chiller cooling water temperature difference data is determined based on the chiller operating status data. The cooling pump control mode is determined based on the cooling water temperature difference data of the chiller and the cooling water temperature difference safety threshold data. The frequency of the preset cooling pump is adjusted according to the cooling pump operating status data and the cooling pump control mode. The step of determining the cooling pump control mode based on the cooling water temperature difference data of the chiller and the cooling water temperature difference safety threshold data includes: When it is determined that the minimum temperature difference in the chiller's cooling water temperature difference data is greater than the maximum threshold in the cooling water temperature difference safety threshold data, or when the maximum temperature difference in the chiller's cooling water temperature difference data is less than the minimum threshold in the cooling water temperature difference safety threshold data, the cooling pump control mode is determined to be a safe adjustment mode. Alternatively, when it is determined that the minimum temperature difference in the chiller's cooling water temperature difference data is less than the maximum threshold in the cooling water temperature difference safety threshold data, and the maximum temperature difference in the chiller's cooling water temperature difference data is greater than the minimum threshold in the cooling water temperature difference safety threshold data, the cooling pump control mode is determined to be an energy-saving adjustment mode. The step of adjusting the frequency of the preset cooling pump based on the cooling pump operating status data and the cooling pump control mode includes: When the cooling pump control mode is determined to be the safety adjustment mode, the desired cooling pump frequency data is calculated based on the cooling pump operating frequency data and the preset frequency adjustment step size. Alternatively, when the cooling pump control mode is determined to be the energy-saving adjustment mode, a target energy-saving adjustment strategy is determined based on preset weather forecast data and the cooling water temperature difference data of the chiller host, and the desired cooling pump frequency data is calculated based on the target energy-saving adjustment strategy using the cooling pump operating frequency data and a preset frequency adjustment step size.

2. The method according to claim 1, characterized in that, The step of acquiring preset wet-bulb temperature data, and determining the cooling water temperature difference safety threshold data based on the preset wet-bulb temperature data and a preset safety range table, includes: Acquire several preset wet-bulb temperature data within a first time period, and calculate the average wet-bulb temperature data using the preset wet-bulb temperature data; The cooling water temperature difference safety threshold is determined by querying the preset safety range table based on the wet-bulb average temperature data; wherein, the preset safety range table includes wet-bulb temperature range and cooling water temperature difference safety range, and the wet-bulb temperature range and the cooling water temperature difference safety range correspond one-to-one.

3. The method according to claim 1, characterized in that, The chiller operating status data includes chiller supply water temperature data, chiller return water temperature data, and chiller on / off status data. Determining the chiller cooling water temperature difference data based on the chiller's operating status data includes: The chiller cooling water temperature difference data is calculated based on the chiller supply water temperature data, the chiller switch status 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 within the second time period.

4. The method according to claim 1, characterized in that, The step of determining a target energy-saving adjustment strategy based on preset weather forecast data and the chiller cooling water temperature difference data, and calculating the desired cooling pump frequency data based on the target energy-saving adjustment strategy using the cooling pump operating frequency data and a preset frequency adjustment step size, 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 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 to reduce the operating frequency, and the desired cooling pump frequency data is obtained by subtracting the preset frequency adjustment step size from the cooling pump operating 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 maximum threshold 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 chiller cooling water temperature difference data is greater than the second temperature threshold, the target energy-saving adjustment strategy is determined to be an increased operating frequency strategy, and the desired cooling pump frequency data is obtained by adding the preset frequency adjustment step size to the cooling pump operating frequency data; wherein, the second temperature threshold is obtained by adding the minimum threshold in the cooling water temperature difference safety threshold data to the preset floating temperature data.

5. The method according to claim 1, characterized in that, After obtaining the preset cooling plant parameter data, the method further includes: The preset cooling station parameter data is preprocessed; wherein, the data preprocessing includes abnormal data deletion and missing data filling.

6. An air conditioning chiller plant regulation system, characterized in that, The system includes: The first module is used to acquire preset chiller plant parameter data; wherein, the preset chiller plant parameter data includes cooling pump operating status data and chiller unit operating status data; The second module is used to acquire preset wet-bulb temperature data, and to determine the cooling water temperature difference safety threshold data based on the preset wet-bulb temperature data and a preset safety range table. The third module is used to determine the cooling water temperature difference data of the chiller based on the chiller's operating status data. The fourth module is used to determine the cooling pump control mode based on 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 based on the cooling pump operating status data and the cooling pump control mode. The step of determining the cooling pump control mode based on the cooling water temperature difference data of the chiller and the cooling water temperature difference safety threshold data includes: When it is determined that the minimum temperature difference in the chiller's cooling water temperature difference data is greater than the maximum threshold in the cooling water temperature difference safety threshold data, or when the maximum temperature difference in the chiller's cooling water temperature difference data is less than the minimum threshold in the cooling water temperature difference safety threshold data, the cooling pump control mode is determined to be a safe adjustment mode. Alternatively, when it is determined that the minimum temperature difference in the chiller's cooling water temperature difference data is less than the maximum threshold in the cooling water temperature difference safety threshold data, and the maximum temperature difference in the chiller's cooling water temperature difference data is greater than the minimum threshold in the cooling water temperature difference safety threshold data, the cooling pump control mode is determined to be an energy-saving adjustment mode. The step of adjusting the frequency of the preset cooling pump based on the cooling pump operating status data and the cooling pump control mode includes: When the cooling pump control mode is determined to be the safety adjustment mode, the desired cooling pump frequency data is calculated based on the cooling pump operating frequency data and the preset frequency adjustment step size. Alternatively, when the cooling pump control mode is determined to be the energy-saving adjustment mode, a target energy-saving adjustment strategy is determined based on preset weather forecast data and the cooling water temperature difference data of the chiller host, and the desired cooling pump frequency data is calculated based on the target energy-saving adjustment strategy using the cooling pump operating frequency data and a preset frequency adjustment step size.

7. 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 as described in any one of claims 1-5.

8. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 1 to 5.

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