Energy-saving control method, device, medium and electronic equipment for central air conditioning operation

Abstract

The present application relates to an energy-saving control method, device, medium and electronic equipment for the operation of a central air conditioner, and relates to the field of energy-saving control technology, wherein the method includes: obtaining at least one actual area in a target building that is cooled by a central air conditioner at the current time; based on each of the actual areas, at least one target area in the target building and at least one corresponding target departure period, determining whether the cooling capacity of the actual area is to be reduced after the current time; if so, determining a target pipeline from each delivery pipeline for chilled water delivered by a chiller, the target pipeline being a pipeline that needs to reduce the chilled water delivery flow and covers a terminal device in at least one actual area; reducing the delivery flow of chilled water delivered by the chiller to each of the target pipelines, and correcting the operating parameters of the terminal device in each of the actual areas. The present application can improve the energy-saving effect in the operation of central air conditioners.

Description

Technical Field

[0001] The present application relates to the field of energy-saving control technology, and specifically to an energy-saving control method, device, medium and electronic equipment for central air-conditioning operation. Background Art

[0002] Central air conditioning is a temperature control system composed of one or more cold and heat source systems and multiple air conditioning systems. Among them, the cold source system is an important part of central air conditioning, usually a chilled water system, which uses a chiller to prepare low-temperature chilled water, and then uses a circulating pump to transport it to each terminal device through a delivery pipeline, and exchanges heat with the indoor air to achieve the purpose of regulating the indoor temperature. This method of heat transfer through chilled water not only improves the refrigeration efficiency, but also reduces energy consumption and operating costs. Central air conditioning has been widely used in many fields due to its high efficiency, stability and comfort. In addition, with the continuous emergence of new economy, new industries and new demands, the application scenarios of central air conditioning are also expanding. Based on the wide application of central air conditioning and the concept of energy saving and environmental protection, the energy-saving requirements during its operation are also getting higher and higher.

[0003] At present, the energy-saving control method commonly used when central air conditioners are running is: based on the target temperature set by the user, the indoor temperature is collected in real time during the temperature adjustment process of the central air conditioner. When the indoor temperature reaches the target temperature, the central air conditioner reduces power consumption or stops cooling or heating to achieve energy saving. However, once the indoor environment is affected and the cooling or heating demand temporarily changes, the central air conditioner will continue to operate at high power consumption in this way until the indoor temperature reaches the target temperature, resulting in poor energy-saving effect in the operation of the central air conditioner. Summary of the invention

[0004] In order to improve the energy-saving effect in the operation of central air conditioning, the present application provides an energy-saving control method, device, medium and electronic equipment for the operation of central air conditioning.

[0005] In a first aspect of the present application, a method for energy-saving control of central air-conditioning operation is provided, which specifically includes:

[0006] Obtain at least one actual area in the target building that is cooled by the central air conditioner at the current time;

[0007] Based on each of the actual areas, at least one target area in the target building, and at least one corresponding target departure time period, determining whether to reduce the cooling capacity of the actual area after the current time, the target area being an activity area where the proportion of people leaving is likely to exceed a preset proportion, and the target departure time period being a time period where the proportion of people leaving is likely to exceed a preset proportion in the corresponding target area;

[0008] If so, determine a target pipeline from various delivery pipelines for delivering chilled water of the chiller, wherein the target pipeline is a pipeline that needs to reduce the chilled water delivery flow and covers a terminal device in at least one actual area;

[0009] The delivery flow rate of chilled water delivered by the chiller to each of the target pipelines is lowered, and the operating parameters of the terminal equipment in each of the actual areas are corrected to optimize the cooling capacity of the corresponding actual area.

[0010] By adopting the above technical solution, after obtaining the actual area currently being cooled, the target area in the target building where a large number of people are likely to leave and the corresponding target departure period are combined to analyze the possibility of a large number of people leaving each actual area after the current time, determine the possibility of a decrease in the cooling demand of each actual area after the current time, and then determine whether to reduce the cooling capacity of the actual area after the current time. If so, then select the target pipeline that needs to reduce the delivery flow from each delivery pipeline that transports chilled water. Further, the delivery flow of chilled water is reduced for each target pipeline, thereby reducing the cooling capacity of the actual area covered in advance, and at the same time, the operating parameters of the terminal equipment in each actual area are corrected, so that once a large number of people leave the actual area in the future, the energy-saving effect can be achieved. Considering that if a large number of people leave in the actual area, there will be a temporary decrease in the cooling demand, an energy-saving response is made in advance in the operation of the central air-conditioning to improve the energy-saving effect in the operation of the central air-conditioning.

[0011] Optionally, the determining whether to reduce the cooling capacity of the actual area after the current time based on each of the actual areas, at least one target area in the target building, and at least one corresponding target departure time period specifically includes:

[0012] Obtain historical areas in which the proportion of people leaving the target building exceeds a preset proportion, count the first occurrence times of each of the historical areas, and select a first number of historical areas from each of the historical areas in descending order of the first occurrence times to determine as target areas;

[0013] Obtain a first historical period in which the proportion of the number of people leaving the target area exceeds a preset proportion, count the second occurrence times of each of the first historical periods, and select a second number of first historical periods from each of the first historical periods in descending order of the second occurrence times to determine as the target departure time periods of the corresponding target area;

[0014] Determine a first weight for each of the target areas, and determine a second weight for each of the target departure time periods corresponding to each of the target areas, wherein the first weight is a ratio of a first occurrence number of each target area to a sum of first occurrence numbers of all target areas, and the second weight is a ratio of a second occurrence number of a single target departure time period corresponding to the target area to a sum of second occurrence numbers of all corresponding target departure time periods;

[0015] According to each of the actual areas, the first weight and the corresponding second weights, it is determined whether the cooling capacity of the actual area is to be reduced after the current time.

[0016] By adopting the above technical solution, the larger the number of first occurrences, the more likely it is that a large number of people will leave the corresponding historical area, and thus the target area will be determined; the larger the number of second occurrences, the more likely it is that a large number of people will leave the target area in the corresponding first historical period, and thus the target departure period will be determined. Finally, the first weight and the corresponding second weight are combined to analyze the possibility of large-scale departure of people in each actual area after the current time, and then accurately evaluate the changes in the cooling demand of the actual area, so as to reasonably determine whether to reduce the cooling capacity of the actual area.

[0017] Optionally, determining whether to reduce the cooling capacity of the actual area after the current time according to each of the actual areas, the first weight and the corresponding second weights specifically includes:

[0018] Determine the target area including the current time in each corresponding target departure time period as the key area, and determine the target departure time period including the current time as the key departure time period;

[0019] When the actual area is a key area, determining the corresponding actual area as a key area, and calculating a first product of a first weight of each of the key areas and a second weight of the corresponding key departure period;

[0020] Summing the first products to obtain a sum of the first products, and if the sum of the first products exceeds a preset first threshold, determining to reduce the cooling capacity of the actual area after the current time;

[0021] If the sum of the first products does not exceed a preset first threshold, it is determined that the cooling capacity of the actual area will not be reduced after the current time.

[0022] By adopting the above technical solution, the larger the first product is, the greater the possibility that a large number of people will leave the corresponding important area after the current time; the larger the sum of the first products is, the greater the overall possibility that a large number of people will leave the actual area; if the sum of the first products exceeds the preset first threshold, it means that the overall possibility is large, then it is determined that the overall cooling demand of all actual areas has decreased; if the current cooling state is maintained, the central air-conditioning will not be energy-efficient, then it is determined that the cooling capacity of the actual area will be reduced after the current time to achieve reasonable cooling.

[0023] Optionally, determining the target pipeline from various delivery pipelines for delivering chilled water from the chiller specifically includes:

[0024] If the delivery pipeline for delivering chilled water of the chiller unit covers at least one terminal device in the important area, the corresponding delivery pipeline is determined as a pipeline to be selected;

[0025] Summing the first products of the important areas covered by each of the candidate pipelines to obtain the sum of the corresponding second products;

[0026] If the sum of the second products is greater than a preset second threshold, the corresponding pipeline to be selected is determined as the target pipeline.

[0027] By adopting the above technical solution, the larger the sum of the second products, the greater the overall possibility of a large-scale departure of people from the important area covered by the pipeline to be selected. Then, if the sum of the second products is greater than the preset second threshold, it means that the overall possibility of a large-scale departure of people from the important area covered by the corresponding pipeline to be selected is relatively high, and the probability of a decrease in cooling demand is relatively high, then the corresponding pipeline to be selected is determined as the target pipeline. This facilitates the subsequent accurate adjustment of the delivery flow of the delivery pipeline.

[0028] Optionally, the modifying the operating parameters of the terminal device in each of the actual areas specifically includes:

[0029] Acquire the second historical periods in which the temperature is set to be increased in each activity area of ​​the target building during the same period, count the first occurrence frequency of each second historical period, and select a third number of second historical periods from each of the second historical periods in descending order of the first occurrence frequency to determine as target temperature adjustment periods;

[0030] Obtaining historical temperature values ​​after setting the temperature to be increased within a single target temperature adjustment period, counting the second occurrence frequency of each of the historical temperature values, and selecting a fourth number of historical temperature values ​​from each of the historical temperature values ​​in descending order of the second occurrence frequency to determine as target temperature values ​​for the corresponding target temperature adjustment period;

[0031] Determine a third weight of each of the target temperature adjustment periods, and determine a fourth weight of each of the target temperature values ​​corresponding to each of the target temperature adjustment periods, wherein the third weight is a ratio of a first occurrence frequency of each target temperature adjustment period to a sum of first occurrence frequencies of all target temperature adjustment periods, and the fourth weight is a ratio of a second occurrence frequency of a single target temperature value corresponding to the target temperature adjustment period to a sum of second occurrence frequencies of all corresponding target temperature values;

[0032] Based on each of the actual areas, the third weight of each active area and the corresponding fourth weights, the operating parameters of the terminal device in each of the actual areas are modified.

[0033] By adopting the above technical solution, the greater the first frequency of occurrence, the easier it is for the activity area to increase the air conditioning temperature in the corresponding second historical period, thereby determining the target temperature adjustment period; the greater the second frequency of occurrence, the easier it is to increase the temperature to the corresponding historical temperature value when setting the temperature increase, thereby determining the target temperature value. Finally, combined with the third weight and the corresponding fourth weight of a single activity area, the possibility of temperature increase in the actual area after the current time is analyzed, thereby determining the change in cooling demand in the actual area, thereby correcting the operating parameters of the terminal equipment in the actual area, thereby achieving energy-saving effects when central air conditioning is used for cooling.

[0034] Optionally, the modifying of the operating parameters of the terminal device in each actual area based on each actual area, the third weight of each active area and the corresponding fourth weights specifically includes:

[0035] If the current time is included in each target temperature adjustment period corresponding to the activity area, the corresponding activity area is determined as the area requiring attention, the target temperature adjustment period including the current time is determined as the period requiring attention, and the actual area existing in each of the areas requiring attention is determined as the adjustment area;

[0036] Calculating the second product of the third weight of the time period requiring attention and the fourth weight of each corresponding target temperature value in each adjustment area, and summing each of the second products to obtain the sum of the products of the corresponding adjustment area;

[0037] Summing the sums of the products to obtain a final sum of the products, and if the final sum of the products is greater than a preset third threshold, selecting a maximum second product from the second products corresponding to each of the adjustment areas;

[0038] According to the target temperature value corresponding to the maximum second product, the correction value of the operating parameter of the terminal device in the corresponding adjustment area is determined, the current operating parameter of the terminal device in the remaining actual area is determined as the corresponding correction value, and the operating parameter of the terminal device in the corresponding actual area is corrected according to each correction value, and the remaining actual area is the actual area excluding the adjustment area.

[0039] By adopting the above technical solution, the larger the sum of the products, the greater the possibility that the set temperature in the adjustment area will be increased. If the final sum of the products is greater than the preset third threshold, it means that after the current time in the actual area, the overall possibility of the set temperature being increased is greater, and the cooling demand is likely to decrease. For energy-saving considerations, it is determined that the cooling capacity of the actual area needs to be reduced after the current time, thereby verifying the rationality of the cooling capacity reduction result, making the adjustment of the cooling capacity of the central air conditioner more rational. Furthermore, the target temperature value corresponding to the maximum second product is the temperature value to which the set temperature is most easily increased after the current time in the corresponding adjustment area. Finally, based on the target temperature value corresponding to this maximum second product, the correction value of the terminal equipment operating parameter in the corresponding adjustment area is determined, thereby realizing reasonable cooling adjustment of each actual area after the current time.

[0040] Optionally, the method further includes:

[0041] Summing the sum of the products of the adjustment areas covered by each of the target pipelines to obtain a reference product sum;

[0042] If the sum of the reference products is greater than a preset fourth threshold, the rationality check of the corresponding target pipeline passes.

[0043] By adopting the above technical solution, the larger the sum of the reference products is, the greater the possibility that the cooling demand in the actual area covered by the corresponding target pipeline will decrease. Finally, if the sum of the reference products is greater than the preset fourth threshold, it means that the cooling demand in the actual area covered by the corresponding target pipeline is more likely to decrease. Then, for energy saving considerations, it is necessary to reduce the delivery flow rate of chilled water in the corresponding target pipeline, and then determine that the rationality check of the target pipeline selection has passed, so as to accurately determine the target pipeline for the reduced delivery flow rate.

[0044] In a second aspect of the present application, there is provided an energy-saving control device for central air conditioning operation, specifically comprising:

[0045] An information acquisition module, used to acquire at least one actual area in the target building that is cooled by the central air conditioner at the current time;

[0046] A downward adjustment determination module is used to determine whether to adjust the cooling capacity of the actual area downward after the current time based on each of the actual areas, at least one target area in the target building, and at least one corresponding target departure time period, wherein the target area is an activity area where the proportion of people leaving is likely to exceed a preset proportion, and the target departure time period is a time period where the proportion of people leaving the corresponding target area is likely to exceed a preset proportion;

[0047] a pipeline screening module, for, if yes, determining a target pipeline from various delivery pipelines for delivering chilled water of the chiller, wherein the target pipeline is a pipeline for which the chilled water delivery flow rate needs to be reduced and which covers a terminal device in at least one actual area;

[0048] The operation optimization module is used to reduce the delivery flow rate of chilled water delivered by the chiller to each of the target pipelines, and to correct the operating parameters of the terminal equipment in each of the actual areas to optimize the cooling capacity of the corresponding actual area.

[0049] By adopting the above technical solution, the information acquisition module acquires at least one actual area, and then the downward adjustment determination module determines whether the cooling capacity of the actual area is reduced after the current time, and then the pipeline screening module determines the target pipeline from the various delivery pipelines of the chiller to transport chilled water, and finally the operation optimization module reduces the delivery flow of chilled water in the target pipeline and corrects the operating parameters of the terminal equipment in the actual area.

[0050] In a third aspect of the present application, a computer-readable storage medium is provided, in which a computer program is stored. When the computer program is loaded and executed by a processor, the method steps described in any one of the first aspects are performed.

[0051] In a fourth aspect of the present application, an electronic device is provided, specifically comprising:

[0052] A processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the processor is used to load and execute the computer program stored in the memory so that the electronic device performs the method as described in any one of the first aspects.

[0053] In summary, the present application includes at least one of the following beneficial technical effects: combining the target area in the target building where a large number of people are likely to leave and the corresponding target departure time period, analyzing the possibility of a large number of people leaving each actual area after the current time, determining the possibility of a decrease in the cooling demand of each actual area after the current time, and then determining whether to reduce the cooling capacity of the actual area after the current time. If so, then select the target pipeline that needs to reduce the delivery flow from each delivery pipeline that delivers chilled water. Further, the delivery flow of chilled water is reduced for each target pipeline, thereby reducing the cooling capacity of the actual area covered in advance, and at the same time, the operating parameters of the terminal equipment in each actual area are corrected, so that once a large number of people leave the actual area in the future, the energy-saving effect can be achieved. Considering that if a large number of people leave in the actual area, there will be a temporary decrease in the cooling demand, an energy-saving response is made in advance in the operation of the central air-conditioning to improve the energy-saving effect in the operation of the central air-conditioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a flow chart of an energy-saving control method for central air-conditioning operation provided by an embodiment of the present application;

[0055] Figure 2 It is a flow chart of another energy-saving control method for central air-conditioning operation provided by an embodiment of the present application;

[0056] Figure 3 It is a structural schematic diagram of an energy-saving control device for central air-conditioning operation provided in an embodiment of the present application;

[0057] Figure 4 It is a structural schematic diagram of another energy-saving control device for central air-conditioning operation provided in an embodiment of the present application.

[0058] Explanation of reference numerals: 11. Information acquisition module; 12. Downward adjustment determination module; 13. Pipeline screening module; 14. Operation optimization module; 15. Pipeline verification module. DETAILED DESCRIPTION

[0059] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0060] In the description of the embodiments of the present application, words such as "illustrative", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "illustrative", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "illustrative", "for example" or "for example" is intended to present related concepts in a concrete way.

[0061] In the description of the embodiments of the present application, the term "and / or" is only a kind of association relationship describing the associated objects, indicating that there may be three kinds of relationships, for example, A and / or B, which can represent: A exists alone, B exists alone, and A and B exist at the same time. In addition, unless otherwise specified, the meaning of the term "multiple" refers to two or more. For example, multiple systems refer to two or more systems, and multiple screen terminals refer to two or more screen terminals. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0062] See also Figure 1 The embodiment of the present application discloses a flow chart of an energy-saving control method for central air-conditioning operation, which can be implemented by a computer program and can also be run on an energy-saving control device for central air-conditioning operation based on the von Neumann system. The computer program can be integrated into an application or run as an independent tool application, specifically including:

[0063] S101: Obtain at least one actual area in a target building that is cooled by a central air conditioner at a current time.

[0064] Specifically, in an embodiment of the present application, the target building may be an office building, and in other embodiments, the target building may also be a hospital or a shopping mall, etc. The target building contains multiple activity areas, and each activity area is provided with a central air-conditioning terminal device for cooling or heating. Among them, the terminal device of the central air-conditioning is an important component of the central air-conditioning. It directly exchanges heat with the indoor air to achieve the regulation of the indoor temperature. The specific process is briefly described as follows: For the cooling scenario, the evaporator in the chiller in the central air-conditioning cools the water, and then the cooled chilled water is transported to the terminal devices in various areas of the building through various pipes via a circulating pump, thereby ultimately achieving the effect of cooling the indoor area. In addition, the terminal device uses a fan coil unit, and in other embodiments, the terminal may also use an air handling unit.

[0065] Furthermore, the execution subject of an energy-saving control method for the operation of a central air conditioner disclosed in an embodiment of the present application may be a cloud server or an independent physical server. The cloud server is wirelessly connected to each device in the central air conditioner. A feasible way to obtain the actual area is to determine the temperature change of the air outlet of the terminal device through the preset temperature sensor in the terminal device in each activity area in the target building. If the temperature continues to drop, it means that the corresponding activity area is being cooled by the central air conditioner, and then it is determined as the actual area. In other embodiments, if the cloud server receives a cooling start instruction for the fan coil unit, it means that there is a cooling demand in the corresponding activity area, and then it is determined as the actual area.

[0066] S102: Based on each actual area, at least one target area in the target building, and at least one corresponding target departure time period, determine whether to reduce the cooling capacity of the actual area after the current time.

[0067] Specifically, the target area is an activity area where the proportion of people leaving is likely to exceed a preset proportion, and the target departure period is a period when the corresponding target area is likely to have a proportion of people leaving exceeding a preset proportion. The proportion of people leaving the activity area in the target building, that is, the ratio of the number of people leaving to the total number of people in the activity area exceeds the preset proportion, indicates that there is a large-scale departure of people in this activity area, and the corresponding cooling demand will decrease. Furthermore, the historical statistical records of the number of people leaving each activity area in the target building are retrieved, and the historical statistical records include the period when the proportion of people leaving the activity area exceeds the preset proportion. Based on the above historical statistical records, the historical areas in the target building where the proportion of people leaving exceeds the preset proportion are obtained, and the first occurrence number of each historical area is counted. The larger the first occurrence number, the more likely the corresponding historical area is to have a large-scale departure of people, and the first number of historical areas are selected from each historical area in descending order of the first occurrence number to be determined as the target area. Next, the first historical time period in which the proportion of people leaving a single target area exceeds a preset proportion is obtained, and the second occurrence number of each first historical time period is counted. The larger the second occurrence number, the more likely it is that a large number of people will leave the target area in the corresponding first historical time period, and the second number of first historical time periods are selected from each first historical time period in descending order of the second occurrence number to be determined as the target departure time period of the corresponding target area. It should be noted that the number of people leaving the activity area can be determined by an infrared sensor.

[0068] Further, the first weight of each target area is calculated, and the second weight of each target departure time period corresponding to each target area is determined, the first weight is the ratio of the first occurrence number of each target area to the sum of the first occurrence number of all target areas, and the second weight is the ratio of the second occurrence number of a single target departure time period corresponding to the target area to the sum of the second occurrence number of all corresponding target departure time periods. After the first weight and the second weight are determined, the change in cooling demand in the actual area after the current time is analyzed in combination with the actual areas currently being cooled, and then it is determined whether the cooling capacity of the actual area is adjusted downward after the current time. In an embodiment of the present application, a feasible determination method is: determine the target area containing the current time in each corresponding target departure time period as a key area, determine the target departure time period containing the current time as a key departure time period, and then when the actual area is this key area, it means that there is a possibility of large-scale departure of people in the corresponding actual area after the current time, and then the corresponding actual area is determined as an important area. Then calculate the first product of the first weight of each important area and the second weight of the corresponding key departure period. The larger the first product, the greater the possibility that a large number of people will leave the corresponding important area after the current time. Further, sum the first products to obtain the sum of the first products. The larger the sum of the first products, the greater the overall possibility that a large number of people will leave the actual area. If the sum of the first products exceeds the preset first threshold, it means that the overall possibility is large, then it is determined that the overall cooling demand of all actual areas has decreased. If the current cooling state continues to be maintained, the central air conditioning will not be energy-efficient. Then it is determined that the cooling capacity of the actual area will be reduced after the current time to achieve reasonable cooling. On the contrary, if the sum of the first products does not exceed the preset first threshold, it is determined that the cooling capacity of the actual area will not be reduced after the current time.

[0069] S103: If yes, determine the target pipeline from various delivery pipelines of the chiller that deliver chilled water.

[0070] Specifically, if it is determined that the cooling capacity of the actual area is to be lowered after the current time, then the target pipeline is determined from the various delivery pipelines for the chilled water delivered by the chiller, and the target pipeline is a pipeline that needs to reduce the chilled water delivery flow and covers the terminal equipment in at least one actual area, so that the cooling capacity in the actual area is lowered by lowering the delivery flow of the target pipeline. In an embodiment of the present application, a feasible way to determine the target pipeline is: if the delivery pipeline for the chilled water delivered by the chiller covers the terminal equipment in at least one important area, that is, when the chilled water is delivered through a single delivery pipeline, there is a branch pipeline in the delivery pipeline, and the branch pipeline can divert part of the chilled water to the terminal equipment in the important area to provide cooling for the important area, then the corresponding delivery pipeline is determined as the pipeline to be selected. Furthermore, the first products corresponding to each important area covered by a single pipeline to be selected are summed to obtain the sum of the corresponding second products. The larger the sum of the second products, the greater the overall possibility of a large-scale departure of personnel in the important area covered by the pipeline to be selected. Then, if the sum of the second products is greater than a preset second threshold, it means that the overall possibility of a large-scale departure of personnel from the important area covered by the corresponding candidate pipeline is high, and the probability of a decrease in cooling demand is high, and the corresponding candidate pipeline is determined as the target pipeline.

[0071] S104: The delivery flow rate of chilled water delivered by the chiller to each target pipeline is reduced, and the operating parameters of the terminal equipment in each actual area are corrected to optimize the cooling capacity of the corresponding actual area.

[0072] Specifically, after the target pipeline is determined, the delivery flow rate of chilled water in the target pipeline at the current time is obtained through the preset flow sensor, and then the current set temperature of the corresponding important area is obtained through the terminal equipment of the important area covered by the target pipeline, and then the current number of people in the important area is determined by the infrared sensor. Finally, the current delivery flow rate, set temperature and current number of people are used as input data and input into the preset flow prediction model to obtain the delivery flow rate of the corresponding target pipeline after the reduction, and the delivery flow rate of the corresponding target pipeline is reduced by the circulating pump accordingly. Once a large area of ​​people leave the important area covered by the current target pipeline, reducing the delivery flow rate of this target pipeline in advance can better achieve the purpose of energy saving. It should be noted that the flow prediction model can use a trained deep neural network model or a decision tree model. The training process is briefly described as: the indoor setting refrigeration temperature of the historical activity area covered by the historical delivery pipeline before the departure of the personnel, the delivery flow rate of the historical delivery pipeline before and after the departure of the personnel, and the number of people in each historical activity area before the departure of the personnel are used as training samples, and the model is trained until the model converges. Among them, the historical activity area is an activity area where the proportion of people leaving exceeds the preset proportion.

[0073] Furthermore, the operating parameters of the terminal equipment in each actual area are also corrected accordingly. In the embodiment of the present application, the operating parameter may be the air supply speed of the terminal equipment. In other embodiments, the operating parameter may also be the flow rate of chilled water flowing into the terminal equipment. If the actual area is not an important area, then its corrected operating parameters are consistent with the operating parameters before correction. For important areas, the corresponding correction coefficient is determined according to the corresponding first product. The correction coefficient is less than 1. The larger the first product, the greater the possibility of large-scale departure of personnel after the current time, and the smaller the correction coefficient. After the current operating parameters are corrected by the correction coefficient, the air supply speed of the terminal equipment is smaller, thereby achieving better energy-saving effects. It should be noted that the correction coefficient corresponding to the first product can be matched from the correction coefficient matching table preset in the database. The correction coefficient matching table includes different first products and corresponding correction coefficients, which are all set by personnel based on experience.

[0074] See also Figure 2 , the embodiment of the present application discloses a flow chart of another energy-saving control method for central air-conditioning operation, which can be implemented by a computer program and can also be run on an energy-saving control device for central air-conditioning operation based on the von Neumann system. The computer program can be integrated into an application or run as an independent tool application, specifically including:

[0075] S201: Obtain at least one actual area in the target building that is cooled by the central air conditioner at the current time.

[0076] S202: Based on each actual area, at least one target area in the target building, and at least one corresponding target departure time period, determine whether to reduce the cooling capacity of the actual area after the current time.

[0077] S203: If yes, determine the target pipeline from various delivery pipelines of the chiller that deliver chilled water.

[0078] S204: The flow rate of chilled water delivered by the chiller to each target pipeline is reduced.

[0079] For details, please refer to steps S101-S102, which will not be described in detail here.

[0080] S205: Obtain the second historical time periods in which the temperature is set to be increased in each activity area in the target building during the same period, count the first occurrence frequency of each second historical time period, and select the third number of second historical time periods from each second historical time period in descending order of the first occurrence frequency to determine as the target temperature adjustment time periods.

[0081] S206: Obtain historical temperature values ​​after setting the temperature higher within a single target temperature adjustment period, count the second occurrence frequency of each historical temperature value, and select a fourth number of historical temperature values ​​from each historical temperature value in descending order of the second occurrence frequency to determine as the target temperature value of the corresponding target temperature adjustment period.

[0082] Specifically, in the embodiment of the present application, the same period is understood to be the historical time in the same period as the current period. For example, if the current period is July, then the same period is July of the past calendar year. Further, the historical adjustment records of the set temperature of each activity area in the target building in the same period are retrieved. The historical adjustment records include but are not limited to the temperature value after the set temperature of each activity area is adjusted and the time of adjustment, etc., wherein the set temperature is the indoor cooling temperature set for the activity area. Based on the historical adjustment records, the second historical period in which the set temperature of a single activity area in the target building is increased is obtained, and the first occurrence frequency of each second historical period is counted. The greater the first occurrence frequency, the easier it is for the activity area to increase the air-conditioning temperature in the corresponding second historical period. Then, in order of the first occurrence frequency from large to small, the third number of second historical periods are selected from each second historical period to be determined as the target temperature adjustment period, that is, the period in which the set temperature is easily increased. Furthermore, based on the above-mentioned historical adjustment records, historical temperature values ​​after the set temperature is increased within a single target temperature adjustment period are obtained, and the second occurrence frequency of each historical temperature value is counted. The larger the second occurrence frequency, the easier it is to adjust the set temperature to the corresponding historical temperature value when the temperature is increased. In order of the second occurrence frequency from large to small, a fourth number of historical temperature values ​​are selected from each historical temperature value to determine as the target temperature value of the corresponding target temperature adjustment period, that is, the historical temperature value that is easier to adjust to.

[0083] S207: Determine a third weight for each target temperature adjustment period, and determine a fourth weight for each target temperature value corresponding to each target temperature adjustment period.

[0084] S208: Based on each actual area, the third weight of each active area and the corresponding fourth weights, the operating parameters of the terminal device in each actual area are modified.

[0085] Specifically, after the target temperature adjustment period and the target temperature value of a single activity area in the target building are determined, the ratio of the first occurrence frequency of each target temperature adjustment period to the sum of the first occurrence frequencies of all target temperature adjustment periods is determined as the third weight of the target temperature adjustment period. The ratio of the second occurrence frequency of a single target temperature value corresponding to the target temperature adjustment period to the sum of the second occurrence frequencies of all corresponding target temperature values ​​is determined as the fourth weight of the target temperature value corresponding to the target temperature adjustment period.

[0086] Furthermore, if the current time is included in each target temperature adjustment period corresponding to a single activity area, the corresponding activity area is determined as an area requiring attention, and the target temperature adjustment period including the current time is determined as a period requiring attention. At the same time, the actual area existing in each area requiring attention is determined as an adjustment area. Then, for a single adjustment area, the second product of the third weight of the period requiring attention and the fourth weight of each corresponding target temperature value is calculated, and each second product is summed to obtain the sum of the products of the corresponding adjustment area. The larger the sum of the products, the greater the possibility that the set temperature will be increased in the adjustment area. Then, the sum of the products is summed to obtain the final sum of the products. If the final sum of the products is greater than the preset third threshold, it means that after the current time of the actual area, the overall possibility of setting the temperature to be increased is relatively large, and the cooling demand is likely to decrease. For energy-saving considerations, it is determined that the cooling capacity of the actual area needs to be reduced after the current time, thereby verifying the rationality of the cooling capacity reduction result, so that the rationality of the central air-conditioning cooling capacity adjustment is higher.

[0087] Furthermore, from each second product corresponding to each adjustment area, the maximum second product is selected, and the target temperature value corresponding to the maximum second product is the temperature value to which the set temperature is most easily increased after the current time of the corresponding adjustment area. Then, if the target temperature value corresponding to the maximum second product is greater than the current set temperature of the corresponding adjustment area, the temperature increase amount of the adjustment area can be determined, thereby verifying the possibility of a decrease in the cooling demand of the adjustment area. Finally, according to the target temperature value corresponding to the maximum second product, the correction value of the operating parameter of the terminal device in the corresponding adjustment area, that is, the correction value of the air supply speed, is determined. A feasible determination method is: match the air supply speed corresponding to this target temperature value from a preset speed matching table, the speed matching table includes different temperature values ​​and corresponding air supply speeds, these data can be obtained based on human experiments, for example, the terminal device is set to different temperature values, and the corresponding air supply speed is collected by the wind speed sensor at the same time. In the cooling mode, the higher the temperature value, the slower the air supply speed of the terminal device is usually.

[0088] Furthermore, the current operating parameters of the terminal devices in the remaining actual areas are determined as corresponding correction values. Finally, the operating parameters of the terminal devices in the corresponding actual areas are adjusted according to the correction values, so as to reasonably adjust the operating parameters of the terminal devices in each actual area according to the change in cooling demand after the current time, so as to achieve energy saving effect. Among them, the remaining actual area is the actual area except the adjustment area.

[0089] In other embodiments, the sum of the products of each adjustment area covered by a single target pipeline is summed to obtain a corresponding reference product sum. The larger the sum of the reference products is, the greater the possibility that the refrigeration demand in the actual area covered by the corresponding target pipeline will decrease. Finally, if the sum of the reference products is greater than a preset fourth threshold, it means that the actual area covered by the corresponding target pipeline is more likely to experience a decrease in refrigeration demand. In order to save energy, it is necessary to reduce the delivery flow rate of chilled water in the corresponding target pipeline, thereby determining that the rationality check of the target pipeline selection has passed.

[0090] The implementation principle of an energy-saving control method for the operation of a central air conditioner in an embodiment of the present application is as follows: combining the target area in the target building where a large number of people are likely to leave and the corresponding target departure period, analyzing the possibility of a large number of people leaving each actual area after the current time, determining the possibility of a decrease in the cooling demand of each actual area after the current time, and then determining whether to reduce the cooling capacity of the actual area after the current time. If so, then select the target pipeline that needs to reduce the delivery flow from each delivery pipeline that delivers chilled water. Further, the delivery flow of chilled water is reduced for each target pipeline, thereby reducing the cooling capacity of the actual area covered in advance, and at the same time, the operating parameters of the terminal equipment in each actual area are corrected, so that once a large number of people leave the actual area in the future, the energy-saving effect can be achieved. Considering that if a large number of people leave in the actual area, there will be a temporary decrease in the cooling demand, an energy-saving response is made in advance in the operation of the central air conditioner to improve the energy-saving effect in the operation of the central air conditioner.

[0091] The following is an embodiment of the device of the present application, which can be used to execute the embodiment of the method of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the method of the present application.

[0092] See also Figure 3 , which is a schematic diagram of the structure of the energy-saving control device for central air-conditioning operation provided by the embodiment of the present application. The energy-saving control device applied to the operation of central air-conditioning can be implemented as all or part of the device through software, hardware or a combination of both. The device includes an information acquisition module 11, a downward adjustment determination module 12, a pipeline screening module 13 and an operation optimization module 14.

[0093] The information acquisition module 11 is used to acquire at least one actual area in the target building that is cooled by the central air conditioner at the current time;

[0094] The downward adjustment determination module 12 is used to determine whether to adjust the cooling capacity of the actual area downward after the current time based on each actual area, at least one target area in the target building, and at least one corresponding target departure time period, the target area is an activity area where the proportion of people leaving is likely to exceed a preset proportion, and the target departure time period is a time period where the proportion of people leaving is likely to exceed a preset proportion in the corresponding target area;

[0095] The pipeline screening module 13 is used to determine the target pipeline from the various delivery pipelines for delivering chilled water of the chiller, and the target pipeline is a pipeline that needs to reduce the chilled water delivery flow and covers the terminal equipment in at least one actual area;

[0096] The operation optimization module 14 is used to reduce the delivery flow rate of chilled water delivered by the chiller to each target pipeline, and to modify the operation parameters of the terminal equipment in each actual area to optimize the cooling capacity of the corresponding actual area.

[0097] Optionally, the determination module 12 is adjusted downward, specifically for:

[0098] Obtain historical areas where the proportion of people leaving the target building exceeds a preset proportion, count the number of first appearances of each historical area, and select the first number of historical areas from each historical area in descending order of the number of first appearances to determine as the target area;

[0099] Obtain the first historical time period in which the proportion of the number of people leaving a single target area exceeds a preset proportion, count the number of second occurrences in each first historical time period, and select the second number of first historical time periods from each first historical time period in descending order of the number of second occurrences to determine as the target departure time period of the corresponding target area;

[0100] Determine a first weight for each target area, and determine a second weight for each target departure period corresponding to each target area, the first weight being a ratio of a first occurrence number of each target area to a sum of first occurrence numbers of all target areas, and the second weight being a ratio of a second occurrence number of a single target departure period corresponding to the target area to a sum of second occurrence numbers of all corresponding target departure periods;

[0101] According to each actual area, the first weight and the corresponding second weights, it is determined whether to reduce the cooling capacity of the actual area after the current time.

[0102] Optionally, the determination module 12 is adjusted downward, specifically for:

[0103] Determine the target area including the current time in each corresponding target departure time period as the key area, and determine the target departure time period including the current time as the key departure time period;

[0104] When the actual area is a key area, the corresponding actual area is determined as the key area, and a first product of a first weight of each key area and a second weight of the corresponding key departure time period is calculated;

[0105] The first products are summed to obtain a sum of the first products, and if the sum of the first products exceeds a preset first threshold, it is determined that the cooling capacity of the actual area is to be reduced after the current time;

[0106] If the sum of the first products does not exceed the preset first threshold, it is determined that the cooling capacity of the actual area will not be reduced after the current time.

[0107] Optionally, the pipeline screening module 13 is specifically used for:

[0108] If the delivery pipeline for delivering chilled water by the chiller covers a terminal device in at least one important area, the corresponding delivery pipeline is determined as a pipeline to be selected;

[0109] The first products of each important area covered by each candidate pipeline are summed to obtain the sum of the corresponding second products;

[0110] If the sum of the second products is greater than a preset second threshold, the corresponding pipeline to be selected is determined as the target pipeline.

[0111] Optionally, the optimization module 14 is run, specifically for:

[0112] Obtain the second historical periods in which the temperature is set to be increased in each activity area of ​​the target building during the same period, count the first occurrence frequency of each second historical period, and select the third number of second historical periods from each second historical period in descending order of the first occurrence frequency to determine as the target temperature adjustment period;

[0113] Obtaining historical temperature values ​​after setting the temperature to be increased within a single target temperature adjustment period, counting the second occurrence frequency of each historical temperature value, and selecting a fourth number of historical temperature values ​​from each historical temperature value in descending order of the second occurrence frequency as target temperature values ​​for the corresponding target temperature adjustment period;

[0114] Determine a third weight for each target temperature adjustment period, and determine a fourth weight for each target temperature value corresponding to each target temperature adjustment period, wherein the third weight is a ratio of a first occurrence frequency of each target temperature adjustment period to a sum of first occurrence frequencies of all target temperature adjustment periods, and the fourth weight is a ratio of a second occurrence frequency of a single target temperature value corresponding to the target temperature adjustment period to a sum of second occurrence frequencies of all corresponding target temperature values;

[0115] Based on each actual area, the third weight of each active area and the corresponding fourth weights, the operating parameters of the terminal device in each actual area are modified.

[0116] Optionally, the optimization module 14 is run, specifically for:

[0117] If the current time is included in each target temperature adjustment period corresponding to the activity area, the corresponding activity area is determined as the area requiring attention, the target temperature adjustment period including the current time is determined as the period requiring attention, and the actual area existing in each area requiring attention is determined as the adjustment area;

[0118] Calculate the second product of the third weight of the time period to be concerned and the fourth weight of each corresponding target temperature value in each adjustment area, and sum the second products to obtain the sum of the products of the corresponding adjustment area;

[0119] Summing the sums of the products to obtain a final sum of the products, and if the final sum of the products is greater than a preset third threshold, selecting a maximum second product from the second products corresponding to each adjustment area;

[0120] According to the target temperature value corresponding to the maximum second product, the correction value of the operating parameter of the terminal device in the corresponding adjustment area is determined, the current operating parameter of the terminal device in the remaining actual area is determined as the corresponding correction value, and the operating parameters of the terminal device in the corresponding actual area are corrected according to each correction value. The remaining actual area is the actual area excluding the adjustment area.

[0121] Optional, such as Figure 4 As shown, the device also includes a pipeline verification module 15, which is specifically used for:

[0122] summing the sum of the products of the adjustment areas covered by each target pipeline to obtain a reference sum of products;

[0123] If the sum of the reference products is greater than a preset fourth threshold, the rationality check of the corresponding target pipeline passes.

[0124] It should be noted that the energy-saving control device for the operation of a central air conditioner provided in the above embodiment only uses the division of the above functional modules as an example when executing the energy-saving control method for the operation of a central air conditioner. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the energy-saving control device for the operation of a central air conditioner provided in the above embodiment and the energy-saving control method embodiment for the operation of a central air conditioner belong to the same concept. The implementation process is detailed in the method embodiment and will not be repeated here.

[0125] An embodiment of the present application further discloses a computer-readable storage medium, and the computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, an energy-saving control method for the operation of a central air conditioner according to the above embodiment is adopted.

[0126] Among them, the computer program can be stored in a computer-readable medium, the computer program includes computer program code, the computer program code can be in the form of source code, object code, executable file or certain middleware, etc. The computer-readable medium includes any entity or device that can carry the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the computer-readable medium includes but is not limited to the above-mentioned components.

[0127] Among them, through this computer-readable storage medium, an energy-saving control method for central air-conditioning operation of the above embodiment is stored in a computer-readable storage medium, and is loaded and executed on a processor to facilitate the storage and application of the above method.

[0128] An embodiment of the present application also discloses an electronic device, in which a computer program is stored in a computer-readable storage medium. When the computer program is loaded and executed by a processor, the above-mentioned energy-saving control method for the operation of a central air conditioner is adopted.

[0129] The electronic device may be a desktop computer, a laptop computer, a cloud server or other electronic device, and the electronic device includes but is not limited to a processor and a memory. For example, the electronic device may also include input and output devices, a network access device, and a bus.

[0130] Among them, the processor can adopt a central processing unit (CPU). Of course, according to actual usage, other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. can also be adopted. The general-purpose processor can adopt a microprocessor or any conventional processor, etc., and this application does not impose any restrictions on this.

[0131] Among them, the memory can be an internal storage unit of the electronic device, such as a hard disk or memory of the electronic device, or it can be an external storage device of the electronic device, such as a plug-in hard disk, a smart memory card (SMC), a secure digital card (SD) or a flash memory card (FC) equipped on the electronic device. Moreover, the memory can also be a combination of an internal storage unit and an external storage device of the electronic device. The memory is used to store computer programs and other programs and data required by the electronic device. The memory can also be used to temporarily store data that has been output or is to be output, and this application does not impose any restrictions on this.

[0132] Among them, through this electronic device, an energy-saving control method for the operation of a central air conditioner in the above embodiment is stored in the memory of the electronic device, and is loaded and executed on the processor of the electronic device for easy use.

[0133] The above is only an exemplary embodiment of the present disclosure and cannot be used to limit the scope of the present disclosure. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. This application is intended to cover any variation, use or adaptive change of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field that are not recorded in the present disclosure. The description and examples are only regarded as exemplary, and the scope and spirit of the present disclosure are defined by the claims.

Claims

1. A method for energy-saving control of central air-conditioning operation, characterized in that: The method comprises: Obtain at least one actual area in the target building that is cooled by the central air conditioner at the current time; Based on each of the actual areas, at least one target area in the target building, and at least one corresponding target departure time period, determining whether to reduce the cooling capacity of the actual area after the current time, the target area being an activity area where the proportion of people leaving is likely to exceed a preset proportion, and the target departure time period being a time period where the proportion of people leaving is likely to exceed a preset proportion in the corresponding target area; If so, determine a target pipeline from various delivery pipelines for delivering chilled water of the chiller, wherein the target pipeline is a pipeline that needs to reduce the chilled water delivery flow and covers a terminal device in at least one actual area; The delivery flow rate of chilled water delivered by the chiller to each of the target pipelines is lowered, and the operating parameters of the terminal equipment in each of the actual areas are corrected to optimize the cooling capacity of the corresponding actual area.

2. The energy-saving control method for central air conditioning operation according to claim 1, characterized in that: The determining whether to reduce the cooling capacity of the actual area after the current time based on each of the actual areas, at least one target area in the target building, and at least one corresponding target departure time period specifically includes: Obtain historical areas in which the proportion of people leaving the target building exceeds a preset proportion, count the first occurrence times of each of the historical areas, and select a first number of historical areas from each of the historical areas in descending order of the first occurrence times to determine as target areas; Obtain a first historical period in which the proportion of the number of people leaving the target area exceeds a preset proportion, count the second occurrence times of each of the first historical periods, and select a second number of first historical periods from each of the first historical periods in descending order of the second occurrence times to determine as the target departure time periods of the corresponding target area; Determine a first weight for each of the target areas, and determine a second weight for each of the target departure time periods corresponding to each of the target areas, wherein the first weight is a ratio of a first occurrence number of each target area to a sum of first occurrence numbers of all target areas, and the second weight is a ratio of a second occurrence number of a single target departure time period corresponding to the target area to a sum of second occurrence numbers of all corresponding target departure time periods; According to each of the actual areas, the first weight and the corresponding second weights, it is determined whether the cooling capacity of the actual area is to be reduced after the current time.

3. The energy-saving control method for central air-conditioning operation according to claim 2, characterized in that: The determining, according to each of the actual areas, the first weights and the corresponding second weights, whether to reduce the cooling capacity of the actual area after the current time specifically includes: Determine the target area including the current time in each corresponding target departure time period as the key area, and determine the target departure time period including the current time as the key departure time period; When the actual area is a key area, determining the corresponding actual area as a key area, and calculating a first product of a first weight of each of the key areas and a second weight of the corresponding key departure period; Summing the first products to obtain a sum of the first products, and if the sum of the first products exceeds a preset first threshold, determining to reduce the cooling capacity of the actual area after the current time; If the sum of the first products does not exceed a preset first threshold, it is determined that the cooling capacity of the actual area will not be reduced after the current time.

4. The energy-saving control method for central air-conditioning operation according to claim 3, characterized in that: Determining the target pipeline from various delivery pipelines for delivering chilled water from the chiller specifically includes: If the delivery pipeline for delivering chilled water of the chiller unit covers at least one terminal device in the important area, the corresponding delivery pipeline is determined as a pipeline to be selected; Summing the first products of the important areas covered by each of the candidate pipelines to obtain the sum of the corresponding second products; If the sum of the second products is greater than a preset second threshold, the corresponding pipeline to be selected is determined as the target pipeline.

5. The energy-saving control method for central air-conditioning operation according to claim 1, characterized in that: The modifying of the operating parameters of the terminal equipment in each actual area specifically includes: Acquire the second historical periods in which the temperature is set to be increased in each activity area of ​​the target building during the same period, count the first occurrence frequency of each second historical period, and select a third number of second historical periods from each of the second historical periods in descending order of the first occurrence frequency to determine as target temperature adjustment periods; Obtaining historical temperature values ​​after setting the temperature to be increased within a single target temperature adjustment period, counting the second occurrence frequency of each of the historical temperature values, and selecting a fourth number of historical temperature values ​​from each of the historical temperature values ​​in descending order of the second occurrence frequency to determine as target temperature values ​​for the corresponding target temperature adjustment period; Determine a third weight of each of the target temperature adjustment periods, and determine a fourth weight of each of the target temperature values ​​corresponding to each of the target temperature adjustment periods, wherein the third weight is a ratio of a first occurrence frequency of each target temperature adjustment period to a sum of first occurrence frequencies of all target temperature adjustment periods, and the fourth weight is a ratio of a second occurrence frequency of a single target temperature value corresponding to the target temperature adjustment period to a sum of second occurrence frequencies of all corresponding target temperature values; Based on each of the actual areas, the third weight of each active area and the corresponding fourth weights, the operating parameters of the terminal device in each of the actual areas are modified.

6. The energy-saving control method for central air-conditioning operation according to claim 5, characterized in that: The modifying of the operating parameters of the terminal device in each actual area based on each actual area, the third weight of each active area and the corresponding fourth weights specifically includes: If the current time is included in each target temperature adjustment period corresponding to the activity area, the corresponding activity area is determined as the area requiring attention, the target temperature adjustment period including the current time is determined as the period requiring attention, and the actual area existing in each of the areas requiring attention is determined as the adjustment area; Calculating the second product of the third weight of the time period requiring attention and the fourth weight of each corresponding target temperature value in each adjustment area, and summing each of the second products to obtain the sum of the products of the corresponding adjustment area; Summing the sums of the products to obtain a final sum of the products, and if the final sum of the products is greater than a preset third threshold, selecting a maximum second product from the second products corresponding to each of the adjustment areas; According to the target temperature value corresponding to the maximum second product, the correction value of the operating parameter of the terminal device in the corresponding adjustment area is determined, the current operating parameter of the terminal device in the remaining actual area is determined as the corresponding correction value, and the operating parameter of the terminal device in the corresponding actual area is corrected according to each correction value, and the remaining actual area is the actual area excluding the adjustment area.

7. The energy-saving control method for central air-conditioning operation according to claim 6, characterized in that: The method further comprises: Summing the sum of the products of the adjustment areas covered by each of the target pipelines to obtain a reference product sum; If the sum of the reference products is greater than a preset fourth threshold, the rationality check of the corresponding target pipeline passes.

8. An energy-saving control device for central air conditioning operation, characterized in that: include: An information acquisition module (11) is used to acquire at least one actual area in the target building that is cooled by the central air conditioner at the current time; A downward adjustment determination module (12) is used to determine whether to adjust the cooling capacity of the actual area downward after the current time based on each of the actual areas, at least one target area in the target building, and at least one corresponding target departure time period, wherein the target area is an activity area where the proportion of people leaving the area is likely to exceed a preset proportion, and the target departure time period is a time period where the proportion of people leaving the area is likely to exceed a preset proportion; A pipeline screening module (13) is used to, if yes, determine a target pipeline from various delivery pipelines for delivering chilled water of the chiller, wherein the target pipeline is a pipeline for which the chilled water delivery flow rate needs to be reduced and covers a terminal device in at least one actual area; The operation optimization module (14) is used to reduce the delivery flow rate of chilled water delivered by the chiller to each of the target pipelines, and to modify the operation parameters of the terminal equipment in each of the actual areas, so as to optimize the cooling capacity of the corresponding actual area.

9. A computer-readable storage medium having a computer program stored therein, characterized in that: When the computer program is loaded and executed by a processor, the method according to any one of claims 1 to 7 is adopted.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that: When the processor loads and executes the computer program, the method according to any one of claims 1 to 7 is adopted.

Images