CN108534394B - Group control optimization control method for loading and unloading of double units of ground source heat pump - Google Patents
Group control optimization control method for loading and unloading of double units of ground source heat pump Download PDFInfo
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- CN108534394B CN108534394B CN201810289076.9A CN201810289076A CN108534394B CN 108534394 B CN108534394 B CN 108534394B CN 201810289076 A CN201810289076 A CN 201810289076A CN 108534394 B CN108534394 B CN 108534394B
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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
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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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
- F25B49/022—Compressor control arrangements
Abstract
The invention discloses a loading and unloading group control optimization control method for a ground source heat pump double-unit, and relates to the technical field of ground source heat pump control. The invention comprises the following processes: acquiring actual power of a compressor of the unit and total supply and return water temperature of chilled water; analyzing the ratio of the actual power to the rated power of the compressor of the computer set, the total supply return water temperature of the chilled water and the set return water temperature, and determining the number of the units; and controlling the starting and running of the unit and the pump set or stopping the running of the unit and the pump set by adopting the optimal starting and stopping time. The invention collects the actual power of the compressor of the unit and the total supply and return water temperature of the chilled water by the management host, analyzes and calculates the ratio of the actual power of the compressor of the unit to the rated power, the total supply and return water temperature of the chilled water and the set water supply temperature, determines the number of the units, and reasonably loads and unloads the number of the ground source heat pump units and related equipment by a system group control optimization control strategy, so that the whole ground source heat pump system runs more efficiently, more safely and more energy-saving.
Description
Technical Field
The invention belongs to the technical field of ground source heat pump control, and particularly relates to a double-unit loading and unloading group control optimization control method of a ground source heat pump.
Background
The ground source heat pump unit is the core of the ground source heat pump system, generally consists of a compressor, a condenser, an expansion valve, an evaporator and other main parts, and is a main device for changing energy and temperature. The cooling and heating both consume some electric energy, however, since the operation relationship between the heat energy and the consumed electric energy is opposite in the cooling mode and the heating mode, the cooling efficiency is generally lower than the heating efficiency. The calculation of the total cooling capacity of the air conditioning system is related to the flow rate of a water pipe and the temperature difference between supplied and returned water, but the pipeline of the whole ground source heat pump system is complex, the installation position and mode requirements of a flowmeter are strict, and errors can be generated by slight negligence, so that the measurement accuracy of the water pipe flowmeter is difficult to ensure, and the whole ground source heat pump system has low operation efficiency and high energy consumption.
In actual project engineering, the load of a building is the real-time load of a unit, so that the better load of the building can be predicted through the working load of the running unit, and whether the ground source heat pump system needs to load or unload the unit is further judged. The real-time load of the unit is the ratio of the real-time power of the compressor to the rated power, so that the power of the compressor of the unit is only directly measured, and the unit is judged whether to be loaded or unloaded by combining the supply and return water temperature of the chilled water. Therefore, the ground source heat pump double-unit loading and unloading group control optimization control method is provided, the number of the ground source heat pump units and related equipment is reasonably loaded and unloaded, and the whole ground source heat pump system is more efficient, safer and more energy-saving to operate.
Disclosure of Invention
The invention aims to provide a group control optimization control method for loading and unloading of a double-unit of a ground source heat pump.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a ground source heat pump double-unit loading and unloading group control optimization control method, which adopts a management host to execute the following steps: the SS01 collects the actual power of the compressor of the unit through the management host; the SS02 collects the total supply water temperature and the total return water temperature of the chilled water through a management host; the SS03 analyzes the ratio of the actual power and the rated power of the computer set compressor, the total chilled water supply temperature and the set water supply temperature, and the total chilled water return temperature and the set water return temperature through the management host to determine the number of the units; and the SS04 adopts the optimal start-stop time control to start or stop the running unit and the pump set.
Further, the number of the units is determined in the step SS03 by the following method: loading a unit when the total chilled water supply temperature is higher than the set water supply temperature by 7 ℃ for 5min and the ratio of the actual power to the rated power of a compressor of the unit is higher than 95% for 5 min; and when the total return water temperature of the chilled water is less than the set return water temperature by 12 ℃ for 5min and the ratio of the actual power to the rated power of the compressor of the unit is less than 60%, unloading the unit.
Further, the method for controlling the optimal start-stop time in step SS04 includes: and starting the unit and the pump set with the shortest running time and related equipment, and stopping the unit and the pump set with the longest running time.
Further, the method for starting the running unit and the pump set in the step SS04 includes the following steps: the method comprises the following steps: selecting a ground source heat pump unit: the management host machine sequentially judges whether each unit is in a stop state, a fault signal or a remote control state, and compares the running time of each unit; selecting a ground source heat pump unit which is in a stop state, in a remote control state, has no fault and has relatively less accumulated running time as a unit to be put into operation; step two: opening a cooling water (ground source side) butterfly valve: after the ground source heat pump unit is selected, the management host sends an instruction for opening a corresponding cooling water butterfly valve; when the management host receives feedback that all the cooling water butterfly valves are normally opened, the next step is carried out; when the management host does not receive the feedback signal of the normal opening of the cooling water butterfly valve, the system considers that the heat pump unit cannot be used, and after all the equipment action instructions are stopped, the step one of selecting the ground source heat pump unit is carried out again; step three: starting the ground source side water pump: after a cooling water (ground source side) butterfly valve is correctly opened, a management host sends an instruction to open a ground source side water pump with the shortest accumulated running time; after the management host receives the feedback of the normal starting of the ground source side water pump, the next step is carried out; when the management host does not receive a feedback signal of normally starting the ground source side water pump, reselecting one ground source side water pump; step four: opening a chilled water butterfly valve at the air conditioner side: after the ground source side water pump is correctly started, the management host sends a command to start an air conditioner side chilled water butterfly valve corresponding to the ground source heat pump unit; when the management host receives feedback that the corresponding chilled water butterfly valves on the air conditioner side are normally opened, the next step is carried out; when the management host does not receive a feedback signal of normally opening a chilled water butterfly valve at the air conditioner side, the system considers that the ground source heat pump unit cannot be used, and after all equipment action instructions are sent out, the step one of selecting the ground source heat pump unit is carried out again; step five: starting a freezing water pump at the air conditioner side: after the air conditioner side chilled water butterfly valve is normally opened, the management host sends an instruction to open the air conditioner side chilled water pump with the shortest accumulated running time; when the management host receives the feedback that the air conditioner side chilled water pump operates normally, the next step is carried out; when the management host does not receive the feedback that the air conditioner side chilled water pump operates normally, the air conditioner side chilled water pump is selected again; step six: starting a ground source heat pump unit: after the air conditioner side refrigerating water pump is normally started, the management host sends a command of starting the ground source heat pump unit; when the management host receives the feedback of the normal operation of the ground source heat pump unit, all the steps of starting the system of the ground source heat pump unit are smoothly completed; and when the management host does not receive the feedback signal of the normal operation of the ground source heat pump unit, the system considers that the ground source heat pump unit cannot be used, and after all the equipment action instructions are stopped, the step one of selecting the ground source heat pump unit is carried out again.
Further, the method for stopping the operation of the unit and the pump group in the step SS04 includes the following steps: s01: selecting and unloading a ground source heat pump unit: the management host machine sequentially judges whether each unit is in an operating state or a remote control state, and compares the operating time of each unit; selecting a ground source heat pump unit which is in an operating state, in a remote control state and relatively more in accumulated operating time as a unit to be stopped; s02: unloading the ground source heat pump unit: after the ground source heat pump unit which stops running is selected, the management host sends an instruction for stopping the ground source heat pump unit; after the management host receives feedback of normal unloading of the ground source heat pump unit, carrying out the next step; when the management host does not receive the feedback of normal unloading of the ground source heat pump unit, the step S01 is carried out again to select the ground source heat pump unit which stops running; s03: closing the ground source side cooling water pump: after the ground source heat pump unit is shut down and delayed for 3min, the management host sends an instruction to shut down the corresponding ground source side cooling water pump with the longest accumulated running time; after the management host receives feedback that the cooling water pump at the ground source side is normally closed, carrying out the next step; when the management host does not receive the feedback of the normal closing of the ground source side cooling water pump, one ground source side cooling water pump is selected again; s04: closing a cooling water butterfly valve: after the ground source side cooling water pump is closed, the management host sends an instruction to close a cooling water butterfly valve corresponding to the ground source side cooling water pump; when the management host receives feedback that the cooling water butterfly valve is normally closed, the next step is carried out; when the management host does not receive the feedback that the cooling water butterfly valve is normally closed, the step S01 is carried out again to select the ground source heat pump unit which stops running; s05: closing the air conditioner freezing water pump: after the cooling water butterfly valve is closed, the management host sends out an instruction to close the corresponding air-conditioning chilled water pump with the longest operation time; when the management host receives the feedback of the normal closing of the air-conditioning chilled water pump, the next step is carried out; when the management host does not receive the feedback of the normal closing of the air-conditioning chilled water pump, reselecting the air-conditioning chilled water pump; s06: closing an air conditioner chilled water butterfly valve: after the air conditioner chilled water pump is closed, the management host sends out an instruction to close the air conditioner chilled water butterfly valve; when the management host receives the feedback that the air conditioner chilled water butterfly valve is normally closed, all the steps of unloading the ground source heat pump unit system are smoothly completed; and when the management host does not receive the feedback signal that the air-conditioning chilled water butterfly valve is normally closed, the step S01 is carried out again to select the ground source heat pump unit which stops running.
The invention has the following beneficial effects:
the invention collects the actual power, the total chilled water supply temperature and the total chilled water return temperature of the unit compressor through the management host, analyzes and calculates the ratio of the actual power to the rated power of the unit compressor, the size of the total chilled water supply temperature to the set water supply temperature and the size of the total chilled water return temperature to the set water return temperature, determines the number of the units, adopts the optimal start-stop time control to start and operate the units, the pump set or stop operating the units and the pump set, and reasonably loads and unloads the number of the ground source heat pump units and related equipment through a system group control optimization control strategy, so that the whole ground source heat pump system operates more efficiently, more safely and more energy-saving.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flow chart of the present invention for loading a ground source heat pump system unit and related equipment;
fig. 2 is a flow chart of unloading the ground source heat pump system unit and the related equipment according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a ground source heat pump double-unit loading and unloading group control optimization control method, which comprises the following steps:
the invention is applied to the control of the whole ground source heat pump machine room, the ground source heat pump machine room is mainly provided with two electric screw type ground source heat pump units (RT-1 and RT-2), a centrifugal water chilling unit (RT-3), three ground source side water pumps (PCD-1, PCD-2 and PCD-3, two functions and one standby), three air conditioner side chilled water pumps (PCH-1, PCH-2 and PCH-3, two functions and one standby are respectively connected with RT-2 and RT-3), two air conditioner side water pumps (PC-1 and PC-2, one function and one standby are connected with RT-3), two cooling tower (CT-1) side water pumps (CT-4 and PCD-5, one function and one standby), two cooling tower (CT-2) side water pumps (PCD-6 and PCD-7, one function and one standby), in the whole operation process of the ground source heat pump system, the screw type ground source heat pump unit, the centrifugal type water chilling unit and the corresponding water pumps are in a one-to-one mode in an interlocking control mode, one water pump is reserved, the most critical device in the ground source heat pump system is the ground source heat pump unit, and the other water pumps and other devices are controlled correspondingly according to the operation conditions of the units, so that the quantity of the ground source heat pump unit is determined, the quantity of the water pumps and other devices is also determined, the ground source heat pump system is a quite complex system, analysis is needed from the related theory in the heating and ventilation professional aspect, the power of a compressor of the unit is measured, the temperature of supply and return water of chilled water is combined to judge whether the unit needs to be loaded or unloaded, a system group control optimization control strategy is adopted, and the quantity of the ground source heat pump unit and the related devices is reasonably loaded and unloaded, the whole ground source heat pump system is more efficient, safer and more energy-saving in operation:
adopting a management host to execute the following steps: the SS01 collects the actual power of the compressor of the unit through the management host; the SS02 collects the total supply water temperature and the total return water temperature of the chilled water through a management host; the SS03 analyzes the ratio of the actual power and the rated power of the computer set compressor, the total chilled water supply temperature and the set water supply temperature, and the total chilled water return temperature and the set water return temperature through the management host to determine the number of the units; and the SS04 adopts the optimal start-stop time control to start or stop the running unit and the pump set.
The number of the units is determined in the step SS03 by adopting the following method: loading a unit when the total chilled water supply temperature is higher than the set water supply temperature by 7 ℃ for 5min and the ratio of the actual power to the rated power of a compressor of the unit is higher than 95%; and unloading one unit when the total return water temperature of the chilled water is less than the set return water temperature of 12 ℃ for 5min and the ratio of the actual power to the rated power of the compressor of the unit is less than 60%.
The method for controlling the optimal start-stop time in the step SS04 comprises the following steps: and starting the unit and the pump set with the shortest running time and related equipment, and stopping the unit and the pump set with the longest running time.
As shown in fig. 1, the method for starting the unit and pump group in step SS04 includes the following steps: the method comprises the following steps: selecting a ground source heat pump unit (RT-1, RT-2): the management host machine sequentially judges whether each unit is in a stop state, a fault signal or a remote control state, and compares the running time of each unit; selecting a ground source heat pump unit which is in a stop state, in a remote control state, has no fault and has relatively less accumulated running time as a unit to be put into operation; step two: opening a cooling water (ground source side) butterfly valve: after the ground source heat pump unit is selected, the management host sends an instruction for opening a corresponding cooling water butterfly valve; when the management host receives feedback that all the cooling water butterfly valves are normally opened, the next step is carried out; when the management host does not receive the feedback signal of the normal opening of the cooling water butterfly valve, the system considers that the heat pump unit cannot be used, and after all the equipment action instructions are stopped, the step one of selecting the ground source heat pump unit is carried out again; step three: starting a ground-side water pump (PCD-1, PCD-2, PCD-3): after a cooling water (ground source side) butterfly valve is correctly opened, a management host sends an instruction to open a ground source side water pump with the shortest accumulated running time; after the management host receives the feedback of the normal starting of the ground source side water pump, the next step is carried out; when the management host does not receive a feedback signal of normally starting the ground source side water pump, reselecting one ground source side water pump; step four: opening a chilled water butterfly valve at the air conditioner side: after the ground source side water pump is correctly started, the management host sends a command to start an air conditioner side chilled water butterfly valve corresponding to the ground source heat pump unit; when the management host receives feedback that the corresponding chilled water butterfly valves on the air conditioner side are normally opened, the next step is carried out; when the management host does not receive a feedback signal of normally opening a chilled water butterfly valve at the air conditioner side, the system considers that the ground source heat pump unit cannot be used, and after all equipment action instructions are sent out, the step one of selecting the ground source heat pump unit is carried out again; step five: starting the air conditioner side refrigerating water pump (PCH-1, PCH-2 and PCH-3): after the air conditioner side chilled water butterfly valve is normally opened, the management host sends an instruction to open the air conditioner side chilled water pump with the shortest accumulated running time; when the management host receives the feedback that the air conditioner side chilled water pump operates normally, the next step is carried out; when the management host does not receive the feedback that the air conditioner side chilled water pump operates normally, the air conditioner side chilled water pump is selected again; step six: starting a ground source heat pump unit (RT-1, RT-2): after the air conditioner side refrigerating water pump is normally started, the management host sends a command of starting the ground source heat pump unit; when the management host receives the feedback of the normal operation of the ground source heat pump unit, all the steps of starting the system of the ground source heat pump unit are smoothly completed; and when the management host does not receive the feedback signal of the normal operation of the ground source heat pump unit, the system considers that the ground source heat pump unit cannot be used, and after all the equipment action instructions are stopped, the step one of selecting the ground source heat pump unit is carried out again.
As shown in fig. 2, the method for stopping the operation of the unit and the pump group in step SS04 includes the following steps: s01: selecting unloading ground source heat pump units (RT-1, RT-2): the management host machine sequentially judges whether each unit is in an operating state or a remote control state, and compares the operating time of each unit; selecting a ground source heat pump unit which is in an operating state, in a remote control state and relatively more in accumulated operating time as a unit to be stopped; s02: unloading the ground source heat pump unit: after the ground source heat pump unit which stops running is selected, the management host sends an instruction for stopping the ground source heat pump unit; after the management host receives feedback of normal unloading of the ground source heat pump unit, carrying out the next step; when the management host does not receive the feedback of normal unloading of the ground source heat pump unit, the step S01 is carried out again to select the ground source heat pump unit which stops running; s03: and (3) turning off the ground source side cooling water pumps (PCD-1, PCD-2 and PCD-3): after the ground source heat pump unit is shut down and delayed for 3min, the management host sends an instruction to shut down the corresponding ground source side cooling water pump with the longest accumulated running time; after the management host receives feedback that the cooling water pump at the ground source side is normally closed, carrying out the next step; when the management host does not receive the feedback of the normal closing of the ground source side cooling water pump, one ground source side cooling water pump is selected again; s04: closing a cooling water butterfly valve: after the ground source side cooling water pump is closed, the management host sends an instruction to close a cooling water butterfly valve corresponding to the ground source side cooling water pump; when the management host receives feedback that the cooling water butterfly valve is normally closed, the next step is carried out; when the management host does not receive the feedback that the cooling water butterfly valve is normally closed, the step S01 is carried out again to select the ground source heat pump unit which stops running; s05: and (3) turning off the air conditioner refrigerating water pump (PCH-1, PCH-2 and PCH-3): after the cooling water butterfly valve is closed, the management host sends out an instruction to close the corresponding air-conditioning chilled water pump with the longest operation time; when the management host receives the feedback of the normal closing of the air-conditioning chilled water pump, the next step is carried out; when the management host does not receive the feedback of the normal closing of the air-conditioning chilled water pump, reselecting the air-conditioning chilled water pump; s06: closing an air conditioner chilled water butterfly valve: after the air conditioner chilled water pump is closed, the management host sends out an instruction to close the air conditioner chilled water butterfly valve; when the management host receives the feedback that the air conditioner chilled water butterfly valve is normally closed, all the steps of unloading the ground source heat pump unit system are smoothly completed; and when the management host does not receive the feedback signal that the air-conditioning chilled water butterfly valve is normally closed, the step S01 is carried out again to select the ground source heat pump unit which stops running.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (2)
1. A loading and unloading group control optimization control method for a ground source heat pump double-unit is characterized in that a management host is adopted to execute the following steps:
SS01 collects the actual power of the compressor of the unit;
SS02 collects the total supply water temperature and the total return water temperature of the chilled water;
the SS03 analyzes the ratio of the actual power and the rated power of the computer set compressor, the total chilled water supply temperature and the set water supply temperature, and the total chilled water return temperature and the set water return temperature through the management host to determine the number of the units;
SS04 adopts the optimal start-stop time control to start or stop the running unit and pump set;
the number of the units is determined in the step SS03 by adopting the following method:
loading a unit when the total chilled water supply temperature is higher than the set water supply temperature by 7 ℃ for 5min and the ratio of the actual power to the rated power of a compressor of the unit is higher than 95%;
when the total return water temperature of the chilled water is less than the set return water temperature by 12 ℃ for 5min and the ratio of the actual power to the rated power of a compressor of the unit is less than 60%, unloading the unit;
the method for starting the running unit and the pump set in the step SS04 comprises the following steps:
the method comprises the following steps: selecting a ground source heat pump unit: the management host machine sequentially judges whether each unit is in a stop state, a fault signal or a remote control state, and compares the running time of each unit; selecting a ground source heat pump unit which is in a stop state, in a remote control state, has no fault and has relatively less accumulated running time as a unit to be put into operation;
step two: and (3) opening a cooling water butterfly valve: after the ground source heat pump unit is selected, the management host sends an instruction for opening a corresponding cooling water butterfly valve;
when the management host receives feedback that all the cooling water butterfly valves are normally opened, the next step is carried out;
when the management host does not receive the feedback signal of the normal opening of the cooling water butterfly valve, stopping sending all equipment action instructions, and then selecting the ground source heat pump unit again in the step one;
step three: starting the ground source side water pump: after the cooling water butterfly valve is correctly opened, the management host sends an instruction to start the ground source side water pump with the shortest accumulated running time;
after the management host receives the feedback of the normal starting of the ground source side water pump, the next step is carried out;
when the management host does not receive a feedback signal of normally starting the ground source side water pump, reselecting one ground source side water pump;
step four: opening a chilled water butterfly valve at the air conditioner side: after the ground source side water pump is correctly started, the management host sends a command to start an air conditioner side chilled water butterfly valve corresponding to the ground source heat pump unit;
when the management host receives feedback that the corresponding chilled water butterfly valves on the air conditioner side are normally opened, the next step is carried out;
when the management host does not receive a feedback signal that the chilled water butterfly valve on the air conditioner side is normally opened, stopping sending all equipment action instructions, and then selecting the ground source heat pump unit again;
step five: starting a freezing water pump at the air conditioner side: after the air conditioner side chilled water butterfly valve is normally opened, the management host sends an instruction to open the air conditioner side chilled water pump with the shortest accumulated running time;
when the management host receives the feedback that the air conditioner side chilled water pump operates normally, the next step is carried out;
when the management host does not receive the feedback that the air conditioner side chilled water pump operates normally, the air conditioner side chilled water pump is selected again;
step six: starting a ground source heat pump unit: after the air conditioner side refrigerating water pump is normally started, the management host sends a command of starting the ground source heat pump unit;
when the management host receives the feedback of the normal operation of the ground source heat pump unit, all the steps of starting the system of the ground source heat pump unit are smoothly completed;
when the management host does not receive the feedback signal of the normal operation of the ground source heat pump unit, stopping sending all equipment action instructions, and then selecting the ground source heat pump unit again;
the method for stopping the operation of the unit and the pump set in the step SS04 comprises the following steps:
s01: selecting and unloading a ground source heat pump unit: the management host machine sequentially judges whether each unit is in an operating state or a remote control state, and compares the operating time of each unit; selecting a ground source heat pump unit which is in an operating state, in a remote control state and relatively more in accumulated operating time as a unit to be stopped;
s02: unloading the ground source heat pump unit: after the ground source heat pump unit which stops running is selected, the management host sends an instruction for stopping the ground source heat pump unit;
after the management host receives feedback of normal unloading of the ground source heat pump unit, carrying out the next step;
when the management host does not receive the feedback of normal unloading of the ground source heat pump unit, the step S01 is carried out again to select the ground source heat pump unit which stops running;
s03: closing the ground source side cooling water pump: after the ground source heat pump unit is shut down and delayed for 3min, the management host sends an instruction to shut down the corresponding ground source side cooling water pump with the longest accumulated running time;
after the management host receives feedback that the cooling water pump at the ground source side is normally closed, carrying out the next step;
when the management host does not receive the feedback of the normal closing of the ground source side cooling water pump, one ground source side cooling water pump is selected again;
s04: closing a cooling water butterfly valve: after the ground source side cooling water pump is closed, the management host sends an instruction to close a cooling water butterfly valve corresponding to the ground source side cooling water pump;
when the management host receives feedback that the cooling water butterfly valve is normally closed, the next step is carried out;
when the management host does not receive the feedback that the cooling water butterfly valve is normally closed, the step S01 is carried out again to select the ground source heat pump unit which stops running;
s05: closing the air conditioner freezing water pump: after the cooling water butterfly valve is closed, the management host sends out an instruction to close the corresponding air-conditioning chilled water pump with the longest operation time;
when the management host receives the feedback of the normal closing of the air-conditioning chilled water pump, the next step is carried out;
when the management host does not receive the feedback of the normal closing of the air-conditioning chilled water pump, reselecting the air-conditioning chilled water pump;
s06: closing an air conditioner chilled water butterfly valve: after the air conditioner chilled water pump is closed, the management host sends out an instruction to close the air conditioner chilled water butterfly valve;
when the management host receives the feedback that the air conditioner chilled water butterfly valve is normally closed, all the steps of unloading the ground source heat pump unit system are smoothly completed;
and when the management host does not receive the feedback signal that the air-conditioning chilled water butterfly valve is normally closed, the step S01 is carried out again to select the ground source heat pump unit which stops running.
2. The ground source heat pump double-unit loading and unloading group control optimization control method according to claim 1, wherein the optimal start-stop time control method in the step SS04 is as follows: and starting the unit and the pump set with the shortest running time and related equipment, and stopping the unit and the pump set with the longest running time.
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| CN111121219A (en) * | 2019-12-28 | 2020-05-08 | 维克（天津）有限公司 | Air-cooled module machine loading and unloading control mode |
| CN112146247B (en) * | 2020-08-18 | 2022-02-15 | 同济大学 | Control method and system for parallel connection of multiple same-model variable-frequency freezing water pumps |
| CN112611141B (en) * | 2020-12-24 | 2021-11-02 | 上海能誉科技股份有限公司 | Energy-saving control method and system for refrigeration host and computer readable storage medium |
| CN113639493B (en) * | 2021-08-13 | 2023-04-14 | 广东纽恩泰新能源科技发展有限公司 | Module control method of low-temperature air source heat pump system |
| CN114060260A (en) * | 2021-09-24 | 2022-02-18 | 中国船舶重工集团公司第七一九研究所 | Boiler feed pump cluster start-stop control method and system |
| CN114636276B (en) * | 2022-05-18 | 2022-07-15 | 深圳市长誉科技有限公司 | Method and equipment for automatically reducing power consumption of refrigeration station based on Internet of things technology |
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| CN101930220B (en) * | 2009-06-18 | 2012-06-20 | 财团法人工业技术研究院 | Ice water system and control method thereof |
| CN102455093B (en) * | 2011-08-17 | 2013-08-28 | 李先安 | Energy efficiency controlling method for refrigerating system |
| CN103175350B (en) * | 2013-03-07 | 2015-02-11 | 广东申菱空调设备有限公司 | Heat pump type modularized light water cooling water chilling unit for ship and control method thereof |
| CN105042938B (en) * | 2015-08-06 | 2018-01-02 | 广东美的暖通设备有限公司 | Air-cooled heat pump cold-hot water machine system and its plus Unloading Control method |
| CN105241108B (en) * | 2015-10-10 | 2017-10-31 | 青岛阿尔普尔新能源科技股份有限公司 | Modularization hot water air-conditioning system and its control method |
| CN106196783B (en) * | 2016-06-28 | 2020-02-28 | 青岛海尔空调电子有限公司 | Control method and control device of module unit and module unit |
| CN107843036B (en) * | 2017-09-21 | 2020-10-16 | 江苏中澜威远控制工程有限公司 | Refrigerating unit most energy-saving control method and equipment based on big data management |
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