CN-121993936-A - Multi-demand priority scheduling method, device, equipment and storage medium

CN121993936ACN 121993936 ACN121993936 ACN 121993936ACN-121993936-A

Abstract

The application provides a multi-demand priority scheduling method, a device, equipment and a storage medium, relates to the technical field of heat pumps, solves the technical problem that the comprehensive energy efficiency of a system is lower due to a scheduling strategy of a multi-heat pump unit when multiple demands coexist in the related technology, and under the condition of parallel multi-load demands, the centralized control host machine is used for carrying out unified scheduling control on a plurality of heat pump units in the heat pump system, an effective global unified scheduling strategy is provided, and the centralized control host machine is used for carrying out dynamic scheduling on the heat pump units based on actual running conditions so as to realize reliable, efficient and balanced collaborative operation under a multi-demand scene, so that the comprehensive energy efficiency of the system is improved, and the stability of the system is effectively improved.

Inventors

ZHOU YUJIAO
MAO WEIMIN
LEI PENGFEI
ZHANG LI

Assignees

广州云雷智能科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260331

Claims (10)

1. A multi-demand priority scheduling method, applied to a centralized control host in a heat pump system including a plurality of heat pump units, the method comprising: Under the condition that a plurality of load demands exist on the heat pump system, respectively selecting a target heat pump unit matched with the load demands from all heat pump units based on the load demands; Determining the power demand corresponding to different load demands in a current control period in each control period, and determining the first operating frequency of a corresponding target heat pump unit based on the power demand corresponding to different load demands so as to control the operation of the target heat pump unit, wherein the power demand is the total power demand increment of the heat pump system in the control period; under the condition that any load demand is in a finished state and other load demands are still in an unfinished state in a current control period, switching an operation mode of a target heat pump unit matched with the load demand in the finished state into an operation mode corresponding to the other load demands according to a preset demand priority, wherein the demand priority is a priority corresponding to the load demands; and under the condition that all load demands are in a finished state in the current control period, controlling a plurality of target heat pump units matched with the same load demand to sequentially enter a shutdown state until all the target heat pump units are in the shutdown state.
2. The multi-demand priority scheduling method according to claim 1, wherein the configuration information of each heat pump unit is recorded with a corresponding priority mode and an accumulated operation duration, the priority mode is an operation mode that the heat pump unit preferentially executes, and one operation mode corresponds to one load demand; under the condition that a plurality of load demands exist on the heat pump system, selecting target heat pump units matched with the load demands from all heat pump units based on the load demands, wherein the target heat pump units comprise: Under the condition that the number of the heat pump units in the heat pump system is larger than or equal to the number of all load demands in the heat pump system, selecting one heat pump unit with the same priority mode as the operation mode corresponding to the load demands and the shortest accumulated operation duration from all heat pump units based on the operation mode matched with the load demands, and taking the heat pump unit as a target heat pump unit matched with the load demands; if the heat pump units with the same operation mode corresponding to the load demand in the priority mode do not exist, selecting the heat pump unit with the least accumulated operation duration from the rest heat pump units as a target heat pump unit of the load demand; Or alternatively, the first and second heat exchangers may be, Under the condition that the number of the heat pump units in the heat pump system is smaller than the number of all load demands in the heat pump system, selecting a target heat pump unit according to the demand priority, and preferentially selecting the load demands with high priority; If the heat pump units with the same operation mode corresponding to the high-priority load demand exist in the priority mode, selecting one heat pump unit with the least accumulated operation duration from the heat pump units as a target heat pump unit matched with the high-priority load demand; If the heat pump units with the same operation mode corresponding to the high-priority load demand do not exist in the priority mode, selecting the heat pump unit with the least accumulated operation duration from the rest heat pump units as the target heat pump unit.
3. The multi-demand priority scheduling method of claim 2 wherein the load demands include a hot water demand, a heating demand, and a cooling demand, and wherein the hot water demand is the highest priority load demand in the presence of the hot water demand among a plurality of load demands; In the case where the number of heat pump units in the heat pump system is greater than or equal to the number of all load demands in the heat pump system, the method further comprises: if the load demands are respectively a hot water demand, a heating demand and a refrigerating demand, taking the rest other heat pump units as target heat pump units matched with a first target load demand, wherein the first target load demand is the load demand with the highest priority in the heating demand and the refrigerating demand; And if the load demands are any two of the hot water demand, the heating demand and the refrigerating demand respectively, taking the rest other heat pump units as target heat pump units matched with a second target load demand, wherein the second target load demand is the load demand with the highest priority or other load demands except the hot water demand in the heating demand and the refrigerating demand.
4. The multi-demand priority scheduling method of claim 1 wherein the calculating of the power demand of the current control period comprises: determining a temperature difference value corresponding to the target water tank temperature and the actual water tank temperature in a plurality of continuous control periods and taking the temperature difference value as a system demand error value of the corresponding control period; Based on the system demand error values corresponding to the adjacent control periods and the preset gain coefficient, a weighted accumulated value is calculated according to an incremental PID algorithm and is used as the power demand of the current control period.
5. The multi-demand priority scheduling method of claim 1 or 4, wherein determining the first operating frequency of the corresponding target heat pump unit to control the target heat pump unit to operate based on the power demand amounts corresponding to different load demands comprises: According to the number of target heat pump units corresponding to the same load demand, the power demand is distributed evenly to determine the average demand of each target heat pump unit corresponding to the same load demand; Determining the ratio of the average demand of the target heat pump unit to a normalized conversion ratio, which is the ratio of the rated cold and hot output of the heat pump unit to a preset reference value, as the frequency variation of the target heat pump unit; Under the condition that the power demand corresponding to the load demand of the current control period is greater than 0, determining the first operating frequency of each target heat pump unit based on the current operating frequency and the frequency variation of the target heat pump unit, and controlling the target heat pump unit to perform up-conversion operation; And under the condition that the power demand corresponding to the load demand of the current control period is smaller than 0, determining the first operating frequency of each target heat pump unit based on the current operating frequency and the frequency variation of the target heat pump unit, and controlling the down-conversion operation of the target heat pump unit.
6. The multi-demand priority scheduling method of claim 5, further comprising: Under the condition that a plurality of target heat pump units are matched with the same load requirement, if an unactuated target heat pump unit exists, the target heat pump unit is started step by step and operates at the minimum operating frequency.
7. The multi-demand priority scheduling method of claim 1 wherein the load demand includes a hot water demand, a heating demand, and a cooling demand, the method further comprising: under the condition that the hot water demand is taken as the newly increased load demand, selecting a first heat pump unit with the longest accumulated operation duration from target heat pump units matched with the heating demand as the target heat pump unit matched with the hot water demand, and switching the operation mode of the first heat pump unit into the operation mode corresponding to the hot water demand.
8. A multi-demand priority scheduling apparatus for use with a centralized control host in a heat pump system comprising a plurality of heat pump units, the apparatus comprising: The unit distribution module is configured to respectively select target heat pump units matched with the load demands from all heat pump units based on the load demands under the condition that the heat pump system is determined to have the plurality of load demands; the frequency control module is configured to determine the power demand corresponding to different load demands in the current control period in each control period, and determine the first operating frequency of a corresponding target heat pump unit based on the power demand corresponding to different load demands so as to control the operation of the target heat pump unit, wherein the power demand is the total power demand increment of the heat pump system in the control period; The mode configuration module is configured to switch the operation mode of the target heat pump unit matched with the load demand in the completed state into the operation mode corresponding to the other load demands according to the preset demand priority when any load demand is in the completed state and other load demands are still in the unfinished state in the current control period, wherein the demand priority is the priority corresponding to the load demand; And the shutdown control module is configured to control a plurality of target heat pump units matched with the same load demand to sequentially enter a shutdown state until all the target heat pump units are in the shutdown state under the condition that all the load demands are in the completed state in the current control period.
9. An electronic device, comprising: One or more processors; Storage means for storing one or more programs that, when executed by the one or more processors, cause the one or more processors to implement the multi-demand priority scheduling method of any of claims 1-7.
10. A storage medium storing computer executable instructions which, when executed by a processor, are for performing the multi-demand priority scheduling method of any one of claims 1-7.

Description

Multi-demand priority scheduling method, device, equipment and storage medium Technical Field The present application relates to the field of heat pump technologies, and in particular, to a method, an apparatus, a device, and a storage medium for scheduling multiple demands and priorities. Background Because the heat pump is efficient and energy-saving, the heat pump is widely applied to heating, refrigerating and other application scenes, and a plurality of heat pump units are connected in parallel in the same system to realize cluster deployment, so that the plurality of heat pump units are controlled to improve the total heating and refrigerating capacity. In actual operation, the heat pump system of the heat pump unit parallel cluster in the related technology lacks a globally unified scheduling strategy and priority preemption mechanism, and a single machine independent judgment and distributed response control mode is adopted, for example, each heat pump unit is independently started, stopped and regulated only according to signals such as tail end temperature, water tank temperature and the like acquired by a sensor of the heat pump unit. In addition, the inventor finds that under the condition of coexistence of multiple demands, such as coexistence of any two load demands of heating, refrigerating, living hot water supply and the like, excessive inclination of unit resources to refrigerating or heating easily occurs in the system, so that demand conflict and resource conflict of slow heating of a hot water tank, insufficient water supply temperature and the like are caused, user experience is reduced, and the conditions of no-load shutdown and overload operation of part units easily occur. In contrast, the overall system in the related art has low comprehensive energy efficiency, and reliable, efficient and balanced collaborative operation in a multi-demand scene cannot be realized. Disclosure of Invention The application provides a multi-demand priority scheduling method, a device, equipment and a storage medium, which solve the technical problem that the comprehensive energy efficiency of a system is low due to a scheduling strategy of a plurality of heat pump units when the demands coexist in the related technology. In a first aspect, the present application provides a multi-demand priority scheduling method applied to a centralized control host in a heat pump system including a plurality of heat pump units, the method including: Under the condition that a plurality of load demands exist on the heat pump system, respectively selecting target heat pump units matched with the load demands from all heat pump units based on the load demands; Determining the power demand corresponding to different load demands in the current control period in each control period, and determining the first operating frequency of the corresponding target heat pump unit based on the power demand corresponding to different load demands so as to control the operation of the target heat pump unit, wherein the power demand is the total power demand increment of the heat pump system in the control period; under the condition that any load demand is in a finished state and other load demands are still in an unfinished state in the current control period, switching an operation mode of a target heat pump unit matched with the load demand in the finished state into an operation mode corresponding to the other load demands according to a preset demand priority, wherein the demand priority is a priority corresponding to the load demand; and under the condition that all load demands are in a finished state in the current control period, controlling a plurality of target heat pump units matched with the same load demand to sequentially enter a shutdown state until all the target heat pump units are in the shutdown state. In a second aspect, the present application further provides a multi-demand priority scheduling apparatus, applied to a centralized control host in a heat pump system including a plurality of heat pump units, the apparatus comprising: the unit distribution module is configured to respectively select target heat pump units matched with the load demands from all the heat pump units based on the load demands under the condition that the heat pump system is determined to have the plurality of load demands; The frequency control module is configured to determine the power demand corresponding to different load demands in the current control period in each control period, and determine the first operating frequency of the corresponding target heat pump unit based on the power demand corresponding to different load demands so as to control the operation of the target heat pump unit, wherein the power demand is the demand increment of the heat pump system for the total power in the control period; The mode configuration module is configured to switch the operation mode of the target heat pump unit matched with the load dema