CN114923266B - Method, apparatus and medium for controlling chiller of central air conditioning system - Google Patents
Method, apparatus and medium for controlling chiller of central air conditioning system Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
- F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/047—Water-cooled condensers
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Abstract
Embodiments of the present disclosure relate to methods, apparatuses, and media for controlling a chiller of a central air conditioning system. According to the method, when a water chilling unit to be started in a central air-conditioning system needs to be started, a current priority ranking rule is obtained; determining a plurality of data associated with each chiller to be started respectively with one or more priority dimensions of a plurality of priority sequencing dimensions; adjusting a ranking order of the plurality of prioritization dimensions based on the obtained plurality of data to obtain an adjusted prioritization rule; sequencing the plurality of water chilling units to be started based on the adjusted priority sequencing rule; and determining the current most suitable water chilling unit to be started based on the final ranking results of the plurality of water chilling units to be started so as to control the determined water chilling unit to be started. Therefore, the priority sequencing rule can be dynamically adjusted, and the water chilling unit to be started which is most suitable for starting at present can be quickly and accurately determined.
Description
Technical Field
Embodiments of the present disclosure relate generally to the field of air conditioning control, and more particularly, to a method, apparatus, and medium for controlling a chiller of a central air conditioning system.
Background
In a central air conditioning system, when the start-up sequence of the chiller units is not specified, it is often necessary to control the start-up of the chiller units based on the priority of the chiller units. Currently, the priority levels of the chiller units are generally predetermined, and the corresponding chiller unit is selected to be started directly based on the determined priority levels during control. However, since the use of the central air conditioning system varies depending on the environment (e.g., indoor and outdoor temperatures of a building), if a single priority level is used, it may not be possible to accurately determine the chiller to be turned on that is currently most suitable for turning on, which may reduce the efficiency of the use of the central air conditioning system, cause waste of energy consumption, and may also reduce the lifespan of the central air conditioning system.
Disclosure of Invention
In view of the above problems, the present disclosure provides a method, an apparatus, and a medium for controlling a chiller of a central air conditioning system, which may dynamically adjust a priority ordering rule, so that a chiller to be started that is currently most suitable for starting may be quickly and accurately determined, thereby contributing to improving the utilization efficiency of the central air conditioning system, saving energy consumption, and contributing to improving the service life of the central air conditioning system.
According to a first aspect of the present disclosure, there is provided a method for controlling a chiller of a central air conditioning system, comprising: when a water chilling unit to be started in a central air-conditioning system needs to be started, acquiring a current priority ordering rule, wherein the current priority ordering rule specifies a plurality of priority ordering dimensions for carrying out priority ordering on a plurality of water chilling units to be started in the central air-conditioning system and a ranking order of the plurality of priority ordering dimensions; determining a plurality of data associated with each to-be-started chiller respectively with one or more of the plurality of prioritization dimensions; adjusting a ranking order of the plurality of prioritization dimensions based on the obtained plurality of data to obtain an adjusted prioritization rule; sequencing the plurality of water chilling units to be started based on the adjusted priority sequencing rule; and determining the current most suitable water chilling unit to be started based on the final ranking results of the plurality of water chilling units to be started so as to control the determined water chilling unit to be started.
According to a second aspect of the present disclosure, there is provided a computing device comprising: at least one processor; and a memory communicatively coupled to the at least one processor; the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of the first aspect of the disclosure.
In a third aspect of the present disclosure, a non-transitory computer readable storage medium is provided having stored thereon computer instructions for causing a computer to perform the method of the first aspect of the present disclosure.
In some embodiments, the plurality of prioritization dimensions include two or more of a device type, a rated power, a total run time, and an energy efficiency ratio of the chiller, and adjusting the ranking order of the plurality of prioritization dimensions based on the obtained plurality of data includes: if the total running time of the water chilling units is included in the priority ranking dimensions of the current priority ranking rule, and the difference value between the maximum total running time and the minimum total running time in the obtained total running times of the water chilling units to be started is larger than or equal to a first set value, the total running time of the water chilling units is adjusted to be the priority ranking dimension with the highest ranking order in the priority ranking dimensions; and if the energy efficiency ratios of the water chilling units are also included in the plurality of prioritization dimensions, and the difference value between the maximum energy efficiency ratio data and the minimum energy efficiency ratio data in the obtained plurality of energy efficiency ratio data about the water chilling units to be started is larger than or equal to a second set value, adjusting the energy efficiency ratio of the water chilling units to be the second prioritization dimension in the ranking order in the plurality of prioritization dimensions.
In some embodiments, the plurality of prioritization dimensions include two or more of a device type, a rated power, a total run time, and an energy efficiency ratio of the chiller, and adjusting the ranking order of the plurality of prioritization dimensions based on the obtained plurality of data includes: if the total running time of the water chilling units is included in the priority ranking dimensions, and the difference value between the maximum total running time and the minimum total running time in the obtained total running times of the water chilling units to be started is smaller than a first set value, adjusting the total running time of the water chilling units to be the priority ranking dimension with the lowest ranking order in the priority ranking dimensions; and if the energy efficiency ratios of the water chilling units are also included in the plurality of priority ranking dimensions, and in the obtained plurality of energy efficiency ratio data about the water chilling units to be started, the difference value between the maximum energy efficiency ratio data and the minimum energy efficiency ratio data is larger than or equal to a second set value, adjusting the energy efficiency ratio of the water chilling units to be the priority ranking dimension with the highest ranking order in the plurality of priority ranking dimensions.
In some embodiments, the plurality of prioritization dimensions include two or more of a device type, a rated power, a total run time, and an energy efficiency ratio of the chiller, and adjusting the ranking order of the plurality of prioritization dimensions based on the obtained plurality of data includes: and if the total running time of the water chilling units is not included in the plurality of priority ranking dimensions but the energy efficiency ratios of the water chilling units are included, and the difference value between the maximum energy efficiency ratio data and the minimum energy efficiency ratio data in the obtained plurality of energy efficiency ratio data about the water chilling units to be started is larger than or equal to a second set value, adjusting the energy efficiency ratio of the water chilling units to be the highest priority ranking dimension in the plurality of priority ranking dimensions.
In some embodiments, ordering the plurality of chiller to be turned on based on the adjusted prioritization rule comprises: sequencing the plurality of water chilling units to be started based on a first priority sequencing dimension with the highest ranking order in the adjusted priority sequencing rule so as to obtain a first priority ranking result; and if one or more first priority ranking grades in the first priority ranking results relate to a plurality of water chilling units to be started, respectively further ranking the water chilling units to be started related to the one or more first priority ranking grades based on a second priority ranking dimension of a second ranking order in the adjusted priority ranking rule so as to obtain a second priority ranking result.
In some embodiments, the current prioritization rule specifies two prioritization dimensions, and the ordering the plurality of chiller to be turned on based on the adjusted prioritization rule further comprises: if each second priority ranking level in the second priority ranking results only relates to one water chilling unit to be started, taking the second priority ranking results as final priority ranking results of the water chilling units to be started; and if one or more second priority ranking grades in the second priority ranking results relate to a plurality of water chilling units to be started, respectively further sequencing the water chilling units to be started related to the one or more second priority ranking grades in a random mode so as to obtain final priority ranking results of the plurality of water chilling units to be started.
In some embodiments, the current prioritization rule specifies four prioritization dimensions, and the ordering the plurality of chiller to be turned on based on the adjusted prioritization rule further comprises: if each second priority ranking level in the second priority ranking results only relates to one water chilling unit to be started, taking the second priority ranking results as final priority ranking results of the water chilling units to be started; if one or more second priority ranking levels in the second priority ranking results relate to a plurality of water chilling units to be started, respectively further ranking the water chilling units to be started related to the one or more second priority ranking levels based on a third priority ranking dimension of a third ranking order in the adjusted priority ranking rule so as to obtain a third priority ranking result; if each third priority ranking level in the third priority ranking results only relates to one water chilling unit to be started, taking the third priority ranking results as final priority ranking results of the water chilling units to be started; if one or more third priority ranking levels in the third priority ranking results relate to a plurality of water chilling units to be started, respectively further ranking the water chilling units to be started related to the one or more third priority ranking levels based on a fourth priority ranking dimension of a fourth ranking order in the adjusted priority ranking rule so as to obtain a fourth priority ranking result; if each fourth priority ranking level in the fourth priority ranking results only relates to one water chilling unit to be started, taking the fourth priority ranking results as final priority ranking results of the water chilling units to be started; and if one or more fourth priority ranking grades in the fourth priority ranking results relate to a plurality of water chilling units to be started, further sequencing the water chilling units to be started related to the one or more fourth priority ranking grades respectively in a random mode so as to obtain final priority ranking results of the water chilling units to be started.
In some embodiments, determining the currently most suitable to be turned on water chiller to be turned on for the central air conditioning system based on the final ranking result of the plurality of water chiller to be turned on comprises:
and selecting one or more water chilling units to be started with the highest priority ranking grade in the final ranking result as the water chilling units to be started which are most suitable for starting at present.
It should be understood that the statements in this section are not intended to identify key or critical features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements.
Fig. 1 shows a schematic diagram of a system 100 for implementing a method for controlling a central air conditioning system according to an embodiment of the invention.
Fig. 2 shows a flow chart of a method 200 for controlling a chiller of a central air conditioning system according to an embodiment of the present disclosure.
FIG. 3 shows a schematic flow diagram of a method 300 for adjusting the ranking order of a plurality of prioritization dimensions, according to an embodiment of the present disclosure.
Fig. 4 illustrates a flow diagram of a method 400 for sorting the plurality of chiller to be started based on the adjusted prioritization rules if the current prioritization rule specifies two prioritization dimensions in accordance with an embodiment of the present disclosure.
Fig. 5 shows a block diagram of an electronic device 500 according to an embodiment of the disclosure.
Detailed Description
Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
The term "include" and variations thereof as used herein is meant to be inclusive in an open-ended manner, i.e., "including but not limited to". Unless specifically stated otherwise, the term "or" means "and/or". The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first," "second," and the like may refer to different or the same object. Other explicit and implicit definitions are also possible below.
As described above, at present, the priority levels of the chiller units are generally predetermined, and the chiller units are directly selected to be turned on based on the determined priority levels when control is performed. However, since the use of the central air conditioning system varies depending on the environment (e.g., indoor and outdoor temperatures of a building), if a single priority level is used, it may result in an inability to accurately determine the chiller to be turned on that is currently most suitable for turning on, which may reduce the efficiency of use of the central air conditioning system, cause waste of energy consumption, and may also reduce the lifespan of the central air conditioning system.
To address at least in part one or more of the above problems and other potential problems, an example embodiment of the present disclosure is directed to a method for controlling a chiller of a central air conditioning system, including: when a water chilling unit to be started in a central air-conditioning system needs to be started, acquiring a current priority ordering rule, wherein the current priority ordering rule specifies a plurality of priority ordering dimensions for carrying out priority ordering on a plurality of water chilling units to be started in the central air-conditioning system and a ranking order of the plurality of priority ordering dimensions; determining a plurality of data associated with each to-be-started chiller respectively with one or more of the plurality of prioritization dimensions; adjusting a ranking order of the plurality of prioritization dimensions based on the obtained plurality of data to obtain an adjusted prioritization rule; sequencing the plurality of water chilling units to be started based on the adjusted priority sequencing rule; and determining the current most suitable water chilling unit to be started based on the final ranking results of the plurality of water chilling units to be started so as to control the determined water chilling unit to be started. In this way, the priority sequencing rule can be dynamically adjusted, so that the water chilling unit to be started which is most suitable for starting at present can be quickly and accurately determined, and the use efficiency of the central air-conditioning system is improved.
Fig. 1 shows a schematic diagram of a system 100 for implementing a method for controlling a central air conditioning system according to an embodiment of the invention. As shown in fig. 1, the system 100 includes an air conditioning control device 110 and a central air conditioning system 120. The central air conditioning system 120 may include a plurality of chiller units and other air conditioning equipment such as a chiller pump, a cooling pump, and the like. The air conditioning control device 110 may perform data interaction with the central air conditioning system 120 to implement control of each chiller and each other air conditioning equipment in the central air conditioning system 120. In the present disclosure, the control of the chiller by the air conditioning control device 110 includes control of the startup aspect of each chiller. The climate control device 110 may be coupled to the central air conditioning system 120 (e.g., wired or wirelessly connected to each chiller in the central air conditioning system) or may be part of the central air conditioning system 120. The climate control device 110 may be implemented via a microcontroller such as a PLC, or may be implemented by an electronic device such as a desktop computer, a laptop computer, an industrial control computer, an embedded control device, and the specific structure thereof may be described below with reference to fig. 5, for example. The climate control device 110 may include one or more processors 1101 and one or more memories 1102 coupled to the one or more processors 1101, the memory 1102 having stored therein instructions executable by the one or more processors 1101 that, when executed by the at least one processor 1101, perform the method 200 as described below.
Fig. 2 shows a flow chart of a method 200 for controlling a chiller of a central air conditioning system according to an embodiment of the present disclosure. The method 200 may be performed by the climate control device 110 as shown in fig. 1, or may be performed at the electronic device 500 shown in fig. 5. It should be understood that method 200 may also include additional blocks not shown and/or may omit blocks shown, as the scope of the present disclosure is not limited in this respect.
In step 202, when the water chilling units to be started in the central air-conditioning system need to be started, a current priority ordering rule is obtained, and the current priority ordering rule specifies a plurality of priority ordering dimensions for performing priority ordering on the water chilling units to be started included in the central air-conditioning system and a ranking order of the priority ordering dimensions.
In the present disclosure, the to-be-turned-on chiller refers to a chiller that is not currently turned on in the central air conditioning system. In some cases, the current prioritization rule is the default prioritization rule, in other cases the current prioritization rule is the prioritization rule used the last time the chiller to be started was opened.
Specifically, in some implementations, after the power supply of the central air conditioning system is turned on, when a certain to-be-started water chiller unit included in the central air conditioning system needs to be turned on for the first time, if a start-up sequence number is not specified for the water chiller unit, a default priority ranking rule is obtained, and in the present disclosure, the default priority ranking rule may be specified when the central air conditioning system leaves a factory, but may be configured by a user as needed. Thus, the current prioritization rule mentioned in step 202 at this time refers to the default prioritization rule. For example only, in the default prioritization rule, four prioritization dimensions, such as a device type, a rated power, a total operating time, and an energy efficiency ratio, of the chiller units may be specified for prioritizing the plurality of to-be-turned-on chiller units included in the central air conditioning system, and the energy efficiency ratio of the chiller unit may also be specified as a highest-ranked prioritization dimension of the prioritization dimensions, the device type of the chiller unit being a second-ranked prioritization dimension, the rated power of the chiller unit being a third-ranked prioritization dimension, and the total operating time of the chiller unit being a fourth-ranked (i.e., lowest-ranked) prioritization dimension.
In other implementations, when one or more new water chilling units to be started need to be started again in the use process of the central air-conditioning system, the priority ranking rule used when the water chilling units to be started are started last time is obtained. Thus, the current prioritization rule mentioned in step 202 at this time refers to the prioritization rule used the last time the chiller to be started was opened.
At step 204, a plurality of data is determined for each to-be-started chiller respectively associated with one or more of the plurality of prioritization dimensions (i.e., the plurality of prioritization dimensions of step 202).
For example, if four priority ordering dimensions Of the device type, the rated power, the total operation time and the energy efficiency ratio Of the chiller units are specified in the current priority ordering rule for prioritizing a plurality Of chiller units to be started included in the central air conditioning system, in step 204, device type data Of each chiller unit to be started, rated power data Of each chiller unit to be started, total operation time data Of each chiller unit to be started and energy efficiency ratio data Of each chiller unit may be respectively determined, wherein the device type data is used for indicating what the device type Of the corresponding chiller unit to be started is, the rated power data is used for indicating what the rated power Of the corresponding chiller unit to be started is, the total operation time data is used for indicating how much time length the corresponding chiller unit to be started runs in total so far, the energy efficiency ratio (Coefficient Of Performance, COP for short) data is used to indicate what the ratio between the compressor cooling capacity of the respective chiller and the electrical power consumed is.
In the present disclosure, equipment type data and rated power data for each chiller to be turned on may be entered directly by the user prior to use of the central air conditioning system. In the present disclosure, the equipment type of the chiller may be a magnetic levitation type, a variable frequency type, or a general type.
The current total operation time data of each water chilling unit to be started can be measured by the corresponding timer, but if the measured total operation time data is less than or equal to zero or greater than or equal to the difference (namely, the longest operation time value) between the current time and the factory time of the water chilling unit, the measured total operation time data is wrong (for example, when the corresponding timer is in fault, the measured total operation time data is wrong), and then the total operation time data of the water chilling unit to be started can be determined as the corresponding longest operation time value.
The current energy efficiency ratio of each water chiller to be started can be determined by using a pre-constructed energy efficiency ratio prediction model. The energy efficiency ratio prediction model may be trained based on a BP neural network or other similar neural network based on a plurality of sample data sets acquired at a predetermined sampling frequency (e.g., once per minute, etc.) over a certain period of time in the past (e.g., one week in the past, two weeks in the past, one month in the past, etc.), each of which may include, for example, a cold load rate PLR, a chilled water supply temperature Tg, a chilled water return temperature Th, a chilled water supply temperature Tgcl, and a chilled water return temperature Thcl of a corresponding chiller. For such an energy efficiency ratio prediction model, the current energy efficiency ratio data of the water chilling unit to be started can be obtained by inputting the cold load rate PLR, the chilled water supply temperature Tg, the chilled water return temperature Th, the chilled water supply temperature Tgcl and the chilled water return temperature Thcl, which are measured at the current moment by the corresponding water chilling unit to be started, into the model.
In step 206, the ranking order of the plurality of prioritization dimensions in step 202 is adjusted based on the obtained plurality of data to obtain an adjusted prioritization rule.
In the present disclosure, the ranking order of each priority ranking dimension in the current priority ranking rule may be adjusted based on each data acquired in step 204, so as to find the water chilling unit to be started in the central air conditioning system that is most suitable for starting up currently, so as to reduce the usage efficiency of the central air conditioning system and reduce the waste of energy consumption.
Step 206 is described in further detail below in conjunction with fig. 3.
At step 208, the plurality of chiller to be started is sorted based on the adjusted prioritization rules.
Step 208 is described in further detail below in conjunction with fig. 4.
In step 210, the water chilling unit to be started which is most suitable for starting at present is determined based on the final ranking results of the plurality of water chilling units to be started, so that the determined water chilling unit to be started is controlled to start.
In some embodiments, step 210 may include selecting one or more to-be-started chiller units with the highest priority ranking in the final ranking result as the chiller units to be started that are most suitable for starting, and the number of the selected chiller units to be started may depend on the number of the chiller units that need to be started currently.
Fig. 3 shows a schematic flow diagram of a method 300 for adjusting the ranking order of a plurality of prioritization dimensions according to an embodiment of the present disclosure. The method 300 may be performed by the climate control device 110 shown in fig. 1, or may be performed at the electronic device 500 shown in fig. 5. It should be understood that method 300 may also include additional blocks not shown and/or may omit blocks shown, as the scope of the disclosure is not limited in this respect.
In one aspect (first branch), as shown in the flow on the right side of fig. 3, in step 302, if the total operating time of the chiller units is included in the plurality of prioritization dimensions of the current prioritization rule, and the difference between the largest total operating time and the smallest total operating time among the plurality of total operating times acquired with respect to the plurality of chiller units to be turned on (i.e., the plurality of chiller units to be turned on included in the central air conditioning system) is greater than or equal to a first setting value, the total operating time of the chiller units is adjusted to the highest-ranked prioritization dimension among the plurality of prioritization dimensions (i.e., the plurality of prioritization dimensions specified in the current prioritization rule).
In step 304, if the energy efficiency ratios of the chiller units are also included in the plurality of prioritization dimensions, and the difference value between the largest energy efficiency ratio data and the smallest energy efficiency ratio data in the acquired energy efficiency ratio data about the chiller units to be started is greater than or equal to a second set value, the energy efficiency ratio of the chiller units is adjusted to the second-ranked prioritization dimension in the plurality of prioritization dimensions.
On the other hand (second branch), as shown in the flow in the middle of fig. 3, in step 306, if the total operation time of the chiller units is included in the plurality of prioritization dimensions (i.e., the plurality of prioritization dimensions specified in the current prioritization rule), and the difference between the largest total operation time and the smallest total operation time among the plurality of total operation times acquired for the plurality of chiller units to be started (i.e., the plurality of chiller units to be started included in the central air conditioning system) is smaller than the first set value, the total operation time of the chiller units is adjusted to the lowest-ranked prioritization dimension among the plurality of prioritization dimensions.
In step 308, if the energy efficiency ratios of the chiller units are also included in the plurality of prioritization dimensions, and the difference value between the maximum energy efficiency ratio data and the minimum energy efficiency ratio data in the acquired energy efficiency ratio data about the chiller units to be started is greater than or equal to a second set value, the energy efficiency ratios of the chiller units are adjusted to the highest-ranked prioritization dimension in the plurality of prioritization dimensions.
In still another aspect (third branch), as shown in the flow on the left side of fig. 3, in step 310, if the total operation time of the chiller units is not included in the plurality of prioritization dimensions (i.e., the plurality of prioritization dimensions specified in the current prioritization rule) but the energy efficiency ratios of the chiller units are included, and the difference between the maximum energy efficiency ratio data and the minimum energy efficiency ratio data among the plurality of energy efficiency ratio data acquired about the plurality of chiller units to be turned on (i.e., the plurality of chiller units to be turned on included in the central air-conditioning system) is greater than or equal to the second setting value, the energy efficiency ratio of the chiller unit is adjusted to the highest-ranked prioritization dimension among the plurality of prioritization dimensions.
In yet another aspect, if none of the conditions mentioned in steps 302, 306 and 308 are met, the current prioritization rules may be kept unchanged and the current prioritization rules continue to be used to sequence the individual chiller blocks to be started in step 208.
By adopting the above means, the method and the device can realize dynamic adjustment of the priority sequencing rule, thereby being beneficial to quickly and accurately determining the water chilling unit to be started which is most suitable for starting at present.
Fig. 4 illustrates a flow diagram of a method 400 for ordering the plurality of chiller to be turned on based on the adjusted prioritization rule if the current prioritization rule specifies two prioritization dimensions, according to an embodiment of the present disclosure. The method 400 may be performed by the climate control device 110 shown in fig. 1, or may be performed at the electronic device 500 shown in fig. 5. It should be understood that method 400 may also include additional blocks not shown and/or may omit blocks shown, as the scope of the disclosure is not limited in this respect.
In step 402, the plurality of chiller to be turned on (i.e., the plurality of chiller to be turned on included in the central air conditioning system) are sorted based on the first prioritization dimension with the highest ranking order in the adjusted prioritization rules (i.e., the adjusted prioritization rules obtained in step 206) to obtain a first prioritization result.
Assuming for example only that two prioritization dimensions specified by the current prioritization rule are energy efficiency ratio and device type, after the two prioritization dimensions are adjusted, the first prioritization dimension with the highest ranking order is energy efficiency ratio, and the second prioritization dimension with the second ranking order is device type. If the central air conditioning system includes the chiller 1, the chiller 2, the chiller 3, and the chiller 4, the first priority ranking result obtained after sorting the chillers based on the first priority sorting dimension (e.g., energy efficiency ratio) is, for example: the first priority ranking level relates to the chiller 4, the second priority ranking level relates to the second chiller 1, and the third priority ranking level relates to the chiller 2 and the chiller 3.
In step 404, if one or more first priority ranking levels in the first priority ranking results obtained in step 402 relate to a plurality of to-be-started chiller units (i.e., relate to a plurality of to-be-started chiller units in the plurality of to-be-started chiller units included in the central air conditioning system), the to-be-started chiller units related to the one or more first priority ranking levels are further ranked respectively based on a second priority ranking dimension of a second ranking order in the adjusted priority ranking rule so as to obtain a second priority ranking result.
For example, in the previous example, since the third priority ranking level involves two chiller units in the first priority ranking result, chiller 2 and chiller 3 would be further ranked in step 404 based on the second prioritization dimension (e.g., device type) that is the second in ranking order in the adjusted prioritization rule. Assuming that the chiller units 2 and 3 are further ordered based on the second prioritization dimension, the priority ranking of the chiller unit 3 is higher than the priority ranking of the chiller unit 2, so that the second priority ranking result can be determined as: the first priority ranking level relates to the chiller 4, the second priority ranking level relates to the second chiller 1, the third priority ranking level relates to the chiller 3, and the fourth priority ranking level relates to the chiller 2.
In step 406, if each of the second priority ranking levels in the second priority ranking results relates to only one water chilling unit to be started, the second priority ranking result is taken as a final priority ranking result of the plurality of water chilling units to be started (i.e., the plurality of water chilling units to be started included in the central air conditioning system).
Continuing with the previous example, the second priority ranking result is: the first priority ranking level relates to the chiller 4, the second priority ranking level relates to the second chiller 1, the third priority ranking level relates to the chiller 3, and the fourth priority ranking level relates to the chiller 2, so that each of the second priority ranking levels only relates to one chiller to be started, and therefore, the final priority ranking result is the second priority ranking result in the example.
In step 408, if one or more of the second priority ranking results relate to a plurality of to-be-started water chilling units (i.e. relate to a plurality of to-be-started water chilling units included in the central air conditioning system), the to-be-started water chilling units related to the one or more second priority ranking results are further sorted in a random manner respectively so as to obtain a final priority ranking result of the plurality of to-be-started water chilling units (i.e. relate to a plurality of to-be-started water chilling units included in the central air conditioning system).
For example only, if the second priority ranking results in: the first priority ranking level relates to the chiller 4, the second priority ranking level relates to the second chiller 1, the third priority ranking level relates to the chiller 3, the fourth priority ranking level relates to the chiller 2 and the chiller 5, so that the fourth priority ranking level at this time relates to two chillers. Thus, at step 408, the chiller 2 and the chiller 5 may be randomly ordered, assuming that the randomly ordered chiller 5 has a priority ranking before the chiller 2. Thus, in this example, the final priority ranking result is: the first priority ranking level relates to the chiller 4, the second priority ranking level relates to the second chiller 1, the third priority ranking level relates to the chiller 3, the fourth priority ranking level relates to the chiller 5, and the fifth priority ranking level relates to the chiller 2.
Although the embodiment shown in fig. 4 shows an embodiment in which the ranking order of two prioritization dimensions is adjusted if the current prioritization rule specifies the two prioritization dimensions, it should be understood that three, four, or more prioritization dimensions may also be specified by the current prioritization rule in the present disclosure. Where the current prioritization rule specifies three, four, or more prioritization dimensions, the method of ordering the plurality of chiller to be turned on based on the adjusted prioritization rule is similar to method 400 shown in fig. 4.
For example, where the current prioritization rule specifies four prioritization dimensions, and the method of ranking the plurality of to-be-started chiller units based on the adjusted prioritization rule may include:
and sequencing the plurality of water chilling units to be started (namely the plurality of water chilling units to be started included in the central air-conditioning system) based on a first priority sequencing dimension with the highest ranking order in the adjusted priority sequencing rule so as to obtain a first priority ranking result.
If one or more first priority ranking levels in the first priority ranking results relate to a plurality of water chilling units to be started (namely, a plurality of water chilling units to be started in the plurality of water chilling units to be started included in the central air-conditioning system), the water chilling units to be started related to the one or more first priority ranking levels are further ranked respectively based on a second priority ranking dimension of the second ranking order in the adjusted priority ranking rule so as to obtain a second priority ranking result.
And if each second priority ranking level in the second priority ranking results only relates to one water chilling unit to be started, taking the second priority ranking results as final priority ranking results of the water chilling units to be started.
If one or more second priority ranking levels in the second priority ranking results relate to a plurality of water chilling units to be started (namely, a plurality of water chilling units to be started in the plurality of water chilling units to be started included in the central air-conditioning system), respectively further ranking the water chilling units to be started related to the one or more second priority ranking levels based on a third priority ranking dimension of a ranking order in the adjusted priority ranking rule so as to obtain a third priority ranking result.
And if each third priority ranking level in the third priority ranking results only relates to one water chilling unit to be started, taking the third priority ranking results as final priority ranking results of the water chilling units to be started.
And if one or more third priority ranking levels in the third priority ranking results relate to a plurality of water chilling units to be started, respectively further ranking the water chilling units to be started related to the one or more third priority ranking levels based on a fourth priority ranking dimension of a ranking order fourth in the adjusted priority ranking rule so as to obtain a fourth priority ranking result.
And if each fourth priority ranking level in the fourth priority ranking results only relates to one water chilling unit to be started, taking the fourth priority ranking results as final priority ranking results of the water chilling units to be started.
And if one or more fourth priority ranking grades in the fourth priority ranking results relate to a plurality of water chilling units to be started, respectively further sequencing the water chilling units to be started related to the one or more fourth priority ranking grades in a random mode so as to obtain final priority ranking results of the plurality of water chilling units to be started.
By adopting the means, the method can quickly and accurately determine the water chilling unit to be started which is most suitable for starting at present.
FIG. 5 illustrates a schematic block diagram of an example electronic device 500 that can be used to implement embodiments of the present disclosure. For example, the climate control device 110 shown in fig. 1 may be implemented by the electronic apparatus 500. As shown, electronic device 500 includes a Central Processing Unit (CPU) 501 that may perform various appropriate actions and processes according to computer program instructions stored in a Read Only Memory (ROM) 502 or loaded from a storage unit 508 into a Random Access Memory (RAM) 503. In the random access memory 503, various programs and data necessary for the operation of the electronic apparatus 500 can also be stored. The central processing unit 501, the read only memory 502 and the random access memory 503 are connected to each other by a bus 504. An input/output (I/O) interface 505 is also connected to bus 504.
A plurality of components in the electronic device 500 are connected to the input/output interface 505, including: an input unit 506 such as a keyboard, a mouse, a microphone, and the like; an output unit 507 such as various types of displays, speakers, and the like; a storage unit 508, such as a magnetic disk, optical disk, or the like; and a communication unit 509 such as a network card, modem, wireless communication transceiver, etc. The communication unit 509 allows the device 500 to exchange information/data with other devices through a computer network such as the internet and/or various telecommunication networks.
The various processes and processes described above, such as the method 200 and 400, may be performed by the central processing unit 501. For example, in some embodiments, the method 200-400 may be implemented as a computer software program tangibly embodied in a machine-readable medium, such as the storage unit 508. In some embodiments, part or all of the computer program may be loaded and/or installed onto the device 500 via the read only memory 502 and/or the communication unit 509. When the computer program is loaded into the random access memory 503 and executed by the central processing unit 501, one or more of the actions of the method 200 and 400 described above may be performed.
The present disclosure relates to methods, apparatuses, systems, electronic devices, computer-readable storage media and/or computer program products. The computer program product may include computer-readable program instructions for performing various aspects of the present disclosure.
The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.
The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge computing devices. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
The computer program instructions for carrying out operations of the present disclosure may be assembler instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, aspects of the disclosure are implemented by personalizing an electronic circuit, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA), with state information of computer-readable program instructions, which can execute the computer-readable program instructions.
Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer readable program instructions.
These computer-readable program instructions may be provided to a processing unit of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the market, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A method for controlling a chiller of a central air conditioning system, comprising:
when a water chilling unit to be started in a central air-conditioning system needs to be started, acquiring a current priority ordering rule, wherein the current priority ordering rule specifies a plurality of priority ordering dimensions for carrying out priority ordering on the water chilling unit to be started in the central air-conditioning system and a ranking order of the priority ordering dimensions, and the priority ordering dimensions comprise two or more of equipment type, rated power, total running time and energy efficiency ratio of the water chilling unit;
determining a plurality of data associated with each to-be-started chiller respectively with one or more of the plurality of prioritization dimensions;
adjusting a ranking order of the plurality of prioritization dimensions based on the obtained plurality of data to obtain an adjusted prioritization rule;
sequencing the plurality of water chilling units to be started based on the adjusted priority sequencing rule; and
and determining the current most suitable water chilling unit to be started based on the final ranking results of the plurality of water chilling units to be started so as to control the determined water chilling unit to be started.
2. The method of claim 1, wherein adjusting the ranking order of the plurality of prioritization dimensions based on the obtained plurality of data comprises:
if the total operation time of the water chilling units is included in the plurality of priority ranking dimensions of the current priority ranking rule, and the difference value between the largest total operation time and the smallest total operation time in the obtained plurality of total operation times of the water chilling units to be opened is larger than or equal to a first set value, the total operation time of the water chilling units is adjusted to be the priority ranking dimension with the highest ranking order in the plurality of priority ranking dimensions;
and if the energy efficiency ratios of the water chilling units are also included in the plurality of prioritization dimensions, and the difference value between the maximum energy efficiency ratio data and the minimum energy efficiency ratio data in the obtained plurality of energy efficiency ratio data about the water chilling units to be started is larger than or equal to a second set value, adjusting the energy efficiency ratio of the water chilling units to be the second prioritization dimension in the ranking order in the plurality of prioritization dimensions.
3. The method of claim 1, wherein adjusting the ranking order of the plurality of prioritization dimensions based on the obtained plurality of data comprises:
if the total running time of the water chilling units is included in the priority ranking dimensions, and the difference value between the maximum total running time and the minimum total running time in the obtained total running times of the water chilling units to be started is smaller than a first set value, adjusting the total running time of the water chilling units to be the priority ranking dimension with the lowest ranking order in the priority ranking dimensions;
and if the energy efficiency ratios of the water chilling units are also included in the plurality of priority ranking dimensions, and the difference value between the maximum energy efficiency ratio data and the minimum energy efficiency ratio data in the obtained plurality of energy efficiency ratio data about the water chilling units to be started is larger than or equal to a second set value, adjusting the energy efficiency ratio of the water chilling units to be the highest-ranking priority ranking dimension in the plurality of priority ranking dimensions.
4. The method of claim 1, wherein adjusting the ranking order of the plurality of prioritization dimensions based on the obtained plurality of data comprises:
and if the total running time of the water chilling units is not included in the plurality of priority ranking dimensions but the energy efficiency ratios of the water chilling units are included, and the difference value between the maximum energy efficiency ratio data and the minimum energy efficiency ratio data in the obtained plurality of energy efficiency ratio data about the water chilling units to be started is larger than or equal to a second set value, adjusting the energy efficiency ratio of the water chilling units to be the highest priority ranking dimension in the plurality of priority ranking dimensions.
5. The method of claim 1, wherein ordering the plurality of chiller to be turned on based on the adjusted prioritization rule comprises:
sequencing the plurality of water chilling units to be started based on a first priority sequencing dimension with the highest ranking order in the adjusted priority sequencing rule so as to obtain a first priority ranking result;
and if one or more first priority ranking grades in the first priority ranking results relate to a plurality of water chilling units to be started, respectively further ranking the water chilling units to be started related to the one or more first priority ranking grades based on a second priority ranking dimension of a second ranking order in the adjusted priority ranking rule so as to obtain a second priority ranking result.
6. The method of claim 5, wherein the current prioritization rule specifies two prioritization dimensions, and ranking the plurality of chiller to be turned on based on the adjusted prioritization rule further comprises:
if each second priority ranking level in the second priority ranking results only relates to one water chilling unit to be started, taking the second priority ranking results as final priority ranking results of the water chilling units to be started;
and if one or more second priority ranking grades in the second priority ranking results relate to a plurality of water chilling units to be started, respectively further sequencing the water chilling units to be started related to the one or more second priority ranking grades in a random mode so as to obtain final priority ranking results of the plurality of water chilling units to be started.
7. The method of claim 5, wherein the current prioritization rule specifies four prioritization dimensions, and wherein ranking the plurality of chiller to be turned on based on the adjusted prioritization rule further comprises:
if each second priority ranking level in the second priority ranking results only relates to one water chilling unit to be started, taking the second priority ranking results as final priority ranking results of the water chilling units to be started;
if one or more second priority ranking levels in the second priority ranking results relate to a plurality of water chilling units to be started, respectively further ranking the water chilling units to be started related to the one or more second priority ranking levels based on a third priority ranking dimension of a third ranking order in the adjusted priority ranking rule so as to obtain a third priority ranking result;
if each third priority ranking level in the third priority ranking results only relates to one water chilling unit to be started, taking the third priority ranking results as final priority ranking results of the water chilling units to be started;
if one or more third priority ranking levels in the third priority ranking results relate to a plurality of water chilling units to be started, respectively further ranking the water chilling units to be started related to the one or more third priority ranking levels based on a fourth priority ranking dimension of a ranking order fourth in the adjusted priority ranking rule so as to obtain a fourth priority ranking result;
if each fourth priority ranking level in the fourth priority ranking results only relates to one water chilling unit to be started, taking the fourth priority ranking results as final priority ranking results of the water chilling units to be started;
and if one or more fourth priority ranking grades in the fourth priority ranking results relate to a plurality of water chilling units to be started, further sequencing the water chilling units to be started related to the one or more fourth priority ranking grades respectively in a random mode so as to obtain final priority ranking results of the water chilling units to be started.
8. The method of claim 1, wherein determining a chiller to be turned on that is currently most suitable for turning on for the central air conditioning system based on the final ranking results of the plurality of chiller to be turned on comprises:
and selecting one or more water chilling units to be started with the highest priority ranking grade in the final ranking result as the water chilling units to be started which are most suitable for starting at present.
9. A computing device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor;
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-8.
10. A non-transitory computer readable storage medium having stored thereon computer instructions for causing a computer to perform the method of any one of claims 1-8.
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| CN202210854427.2A CN114923266B (en) | 2022-07-20 | 2022-07-20 | Method, apparatus and medium for controlling chiller of central air conditioning system |
| EP23186075.0A EP4310418A3 (en) | 2022-07-20 | 2023-07-18 | Method, device and medium for controlling water chiller in central air conditioning system |
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| CN103307698B (en) * | 2012-03-16 | 2016-12-14 | 珠海格力电器股份有限公司 | Air conditioning system and control method and device thereof |
| JP6029363B2 (en) * | 2012-07-13 | 2016-11-24 | 株式会社日立製作所 | Heat source system |
| CN104807136B (en) * | 2014-01-27 | 2018-02-13 | 珠海格力电器股份有限公司 | Compressor operation scheduling method and system and air conditioning unit |
| CN105605842B (en) * | 2015-12-28 | 2018-07-03 | 重庆美的通用制冷设备有限公司 | The control method of multimode unit |
| US20170219233A1 (en) * | 2016-01-29 | 2017-08-03 | Nec Laboratories America, Inc. | Multi-layer optimal chiller operation management framework |
| CN106765911B (en) * | 2016-12-06 | 2019-09-10 | 珠海格力电器股份有限公司 | Control method and device of central air-conditioning cooler and controller |
| CN110108002B (en) * | 2019-05-31 | 2021-02-26 | 珠海格力电器股份有限公司 | Outdoor unit operation control method and device for improving operation energy efficiency and stability |
| CN211823008U (en) * | 2019-12-19 | 2020-10-30 | 江苏点燃节能科技有限公司 | Self-optimizing group control system of air-cooled modular machine |
| CN112348375B (en) * | 2020-11-11 | 2024-05-10 | 广东蘑菇物联科技有限公司 | Real-time control method, system, equipment and storage medium based on multiple equipment |
| CN113465096B (en) * | 2021-05-18 | 2022-09-09 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioner and method and device for controlling operation of outdoor unit of multi-split air conditioner |
| CN113790542B (en) * | 2021-09-06 | 2023-03-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Multi-module water chilling unit and scheduling control method thereof |
| CN113864973B (en) * | 2021-09-23 | 2022-08-05 | 珠海格力电器股份有限公司 | Control method, device and system for clustered heat pump unit and air conditioning equipment |
| CN114322262B (en) * | 2021-12-23 | 2023-04-14 | 珠海格力电器股份有限公司 | Multi-system air conditioner scheduling method and device and air conditioner |
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