Modular intelligent control method and system for assembly type heat pump energy station

Abstract

The invention relates to the technical field of renewable energy station intelligent control, in particular to a modular intelligent control method and system for an assembly type heat pump energy station, and the method comprises the steps: obtaining a monitoring signal of a unit self-control module through the modular intelligent control system for the assembly type heat pump energy station; performing unified processing according to the monitoring signals of the unit self-control modules to obtain standardized installation data of the corresponding unit self-control modules; analyzing and processing according to the standardized installation data of the unit self-control module to obtain a corresponding tail end load demand result; performing communication control connection of a unit self-control module based on a central intelligent control module according to the end load demand result to obtain a modular intelligent control result of the assembly type heat pump energy station; compared with the prior art, the on-site installation and debugging time is obviously shortened, the coordination among the modules is improved, the overall optimization is realized, the energy supply strategy is dynamically adjusted according to the monitored actual load condition, the real intelligent optimization is realized, and the energy is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of intelligent control of renewable energy stations, and specifically relates to a modular intelligent control method and system for an assembled heat pump energy station. Background Art

[0002] With the continuous growth of energy demand and the increasing importance of environmental protection, heat pump technology has been widely used in the fields of heating and cooling due to its high efficiency and energy saving. Traditional heat pump energy stations usually adopt decentralized control methods, which require complex power distribution and automatic control system debugging at the construction site. It is not only time-consuming, but also has high requirements for environmental conditions, increases the difficulty of construction, and has many inconveniences in installation, maintenance and upgrading. At the same time, due to the decentralized control circuits and complex control systems of existing heat pump energy stations, the coordination between the systems is poor, making it difficult to achieve overall optimization. When abnormal situations occur, the system responds slowly and cannot be adjusted in time to maintain normal operation, nor can it dynamically adjust the energy supply strategy according to actual load demand. Summary of the invention

[0003] In order to solve the above-mentioned existing problems, the purpose of the present invention is to provide a modular intelligent control method and system for an assembled heat pump energy station. The method and system can transform traditional decentralized control into centralized control, realize modular prefabrication production, simplify the on-site installation and debugging process, reduce on-site installation time, and improve the operating efficiency of the energy station.

[0004] On the one hand, the present invention provides a modular intelligent control method for an assembled heat pump energy station, comprising:

[0005] Use the modular intelligent control system of the assembled heat pump energy station to obtain the monitoring signal of the unit's automatic control module;

[0006] Performing unified processing according to the monitoring signal of the unit automatic control module to obtain standardized installation data of the corresponding unit automatic control module;

[0007] Analyzing and processing the standardized installation data of the unit automatic control module to obtain the corresponding terminal load demand result;

[0008] According to the terminal load demand result, automatic control connection is performed based on the central intelligent control module to obtain the modular intelligent control result of the assembled heat pump energy station;

[0009] The monitoring signals include a communication signal of the unit, a water pump monitoring signal, a temperature signal of the terminal, and a pressure signal of the terminal.

[0010] Furthermore, the standardized installation data of the corresponding unit automatic control module is obtained by uniformly processing the monitoring signal of the unit automatic control module, including:

[0011] Performing unified numbering processing according to the monitoring data of the unit automatic control module to obtain standard numbering information;

[0012] Performing unified wiring processing on the unit automatic control module according to the standard number information to obtain standard wiring information;

[0013] Performing unified control processing on the automatic control program according to the standard number information and the standard wiring information to obtain the corresponding standardized program;

[0014] The standard number information, standard wiring information and standardized procedures are used as standardized installation data of the unit automatic control module.

[0015] Furthermore, the corresponding terminal load demand results obtained by analyzing and processing the standardized installation data of the unit automatic control module include:

[0016] Acquire the unit, valve and water pump operation data in the unit automatic control module according to the standardized installation data of the unit automatic control module;

[0017] According to the unit, valve and water pump operation data in the unit automatic control module, corresponding real-time temperature data, real-time pressure data and unit load data are respectively obtained;

[0018] The real-time temperature data, real-time pressure data and unit load data are used to perform analysis and processing to obtain the corresponding terminal load demand result.

[0019] On the other hand, the present invention provides a modular intelligent control system for an assembled heat pump energy station, comprising: a central intelligent control module and several unit automatic control modules; wherein the central intelligent control module comprises a PLC controller, a touch screen, a power supply, relays and terminals, for managing and controlling the integration of the unit automatic control modules; the unit automatic control module comprises a unit, an intelligent control device, and an independent automatic control program, for independently controlling the operation of the unit; the central intelligent control module and the unit automatic control module are connected via a communication interface; wherein the number of the unit automatic control modules is at least four.

[0020] Furthermore, the units include but are not limited to chillers, heat pump units, air-cooled units and boilers.

[0021] Furthermore, the intelligent control equipment includes a unit, a valve, a water pump and a sensor.

[0022] Furthermore, the automatic control program is a fixed program that is prefabricated through standardization.

[0023] Furthermore, the communication interface is at least one of RS485, TCP / IP, and a wireless communication interface; the communication interface supports plug-and-play and automatic configuration between modules.

[0024] Furthermore, the system realizes the fixed control point assembly and standardized installation of the unit control modules by controlling the communication integration between the central intelligent control module and the automatic control programs of several unit automatic control modules;

[0025] Among them, several unit automatic control modules are heat pump unit automatic control modules, chiller unit automatic control modules, air-cooled unit automatic control modules, boiler automatic control modules or other unit automatic control modules in the energy station, and the number is at least 4.

[0026] Among them, the fixed control points are fixed control circuits and interfaces of the unit control module, and the control circuits are standardized prefabricated circuits; the standardized prefabrication is a unified process of modular prefabrication production, equipment assembly and program debugging.

[0027] Furthermore, the sensors are temperature sensors, pressure sensors and liquid level sensors, which are used to collect the operation data of the unit in real time.

[0028] Compared with the closest prior art, the present invention has the following beneficial effects:

[0029] The modular intelligent control system of the assembled energy station of the present invention mainly centrally controls the power distribution of traditional decentralized units, water pumps, valves, etc., standardizes and unifies them through monitoring and control programs, and modularly prefabricates the intelligent control system of the energy station and standardizes the automatic control program design before entering the construction site. After arriving at the site, only the intelligent control equipment assembly and equipment installation are required, and there is no need to debug the on-site automatic control system. Compared with the prior art, the present invention significantly shortens the on-site installation and debugging time, and the debugging improves the coordination between the modules, which can achieve overall optimization. At the same time, the energy supply strategy can be dynamically adjusted according to the actual load conditions monitored, realizing true intelligent optimization and saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a flow chart of a modular intelligent control method for an assembled heat pump energy station provided by the present invention;

[0031] Figure 2 It is a schematic diagram of standardized numbers in a modular intelligent control method for an assembled heat pump energy station provided by the present invention;

[0032] Figure 3 It is a schematic diagram of a modular intelligent control system for an assembled heat pump energy station provided by the present invention. DETAILED DESCRIPTION

[0033] The specific implementation modes of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1:

[0036] This embodiment provides a modular intelligent control method for an assembled heat pump energy station. Figure 1 As shown, including:

[0037] Use the modular intelligent control system of the assembled heat pump energy station to obtain the monitoring signal of the unit's automatic control module;

[0038] Performing unified processing according to the monitoring signal of the unit automatic control module to obtain standardized installation data of the corresponding unit automatic control module;

[0039] Analyzing and processing the standardized installation data of the unit automatic control module to obtain the corresponding terminal load demand result;

[0040] According to the terminal load demand result, automatic control connection is performed based on the central intelligent control module to obtain the modular intelligent control result of the assembled heat pump energy station;

[0041] The present embodiment provides a modular intelligent control method for an assembled heat pump energy station, wherein the monitoring signals include unit communication signals, water pump monitoring signals, terminal water supply temperature and water supply pressure acquisition signals, terminal return water temperature and return water pressure acquisition signals and terminal heat meter acquisition signals, ground source side return water temperature and return water pressure acquisition signals, and ground source side water supply temperature and water supply pressure acquisition signals.

[0042] Furthermore, the standardized installation data of the corresponding unit automatic control module is obtained by uniformly processing the monitoring signal of the unit automatic control module, including:

[0043] Performing unified numbering processing according to the monitoring data of the unit automatic control module to obtain standard numbering information;

[0044] Performing unified wiring processing on the unit automatic control module according to the standard number information to obtain standard wiring information;

[0045] Performing unified control processing on the automatic control program according to the standard number information and the standard wiring information to obtain the corresponding standardized program;

[0046] The standard number information, standard wiring information and standardized procedures are used as standardized installation data of the unit automatic control module.

[0047] In this embodiment, a modular intelligent control method for an assembled heat pump energy station is provided. Figure 2 As shown, the unit automatic control module is designed in a standardized manner. According to the collected unit communication signals, water pump monitoring signals, terminal water supply temperature and water supply pressure collection signals, terminal return water temperature and return water pressure collection signals and terminal heat meter collection signals, ground source side return water temperature and return water pressure collection signals, ground source side water supply temperature and water supply pressure collection signals, after unified numbering based on the standardized design, unified installation and wiring are carried out. After the equipment is installed, the automatic control system is uniformly regulated to obtain a standardized procedure.

[0048] Furthermore, the corresponding terminal load demand results obtained by analyzing and processing the standardized installation data of the unit automatic control module include:

[0049] Acquire the unit, valve and water pump operation data in the unit automatic control module according to the standardized installation data of the unit automatic control module;

[0050] According to the unit, valve and water pump operation data in the unit automatic control module, corresponding real-time temperature data, real-time pressure data and unit load data are respectively obtained;

[0051] The real-time temperature data, real-time pressure data and unit load data are used to perform analysis and processing to obtain the corresponding terminal load demand result.

[0052] Embodiment 2:

[0053] This embodiment provides a modular intelligent control system for an assembled heat pump energy station. Figure 3 As shown, including:

[0054] It includes a central intelligent control module and several unit automatic control modules; wherein the central intelligent control module includes a PLC controller, a touch screen, a power supply, relays and terminals, which are used to manage and control the integration of the unit automatic control modules; the unit automatic control module includes a unit, an intelligent control device, and an independent automatic control program, which is used to independently control the operation of the unit; the central intelligent control module and the unit automatic control module are connected through a communication interface.

[0055] The communication interface supports plug-and-play and automatic configuration between modules.

[0056] The system realizes the fixed control point assembly and standardized installation of the unit control modules by controlling the communication integration between the central intelligent control module and the automatic control program of each unit automatic control module;

[0057] Among them, the fixed control points are fixed control circuits and interfaces of the unit control module, and the control circuits are standardized prefabricated circuits; the standardized prefabrication is a unified process of modular prefabrication production, equipment assembly and program debugging.

[0058] In the present embodiment, a modular intelligent control system for an assembled heat pump energy station is provided, wherein the number of the unit automatic control modules is four, and the unit automatic control modules are a chiller automatic control module, a heat pump unit automatic control module, an air-cooled unit automatic control module and a boiler automatic control module; the intelligent control equipment includes units, valves, water pumps and sensors; the temperature sensor, pressure sensor and liquid level sensor; the communication interface is RS485, TCP / IP, wireless communication interface; the automatic control program is a fixed program prefabricated through standardization.

[0059] In this embodiment, a modular intelligent control system for an assembled heat pump energy station is provided, in which a circulating water pump is used for heat interaction and heat transfer; pressure sensors are installed on the water supply pipe and the return pipe to obtain the real-time pressure of each pipe; temperature sensors are respectively installed on the water inlet pipe and the water outlet pipe of the heat pump unit to monitor the real-time water inlet temperature and water outlet temperature; electric valves are used to control the water flow direction or flow rate in the water pipe.

[0060] Embodiment 3:

[0061] Based on the intelligent control method of Example 1 and the intelligent control system of Example 2, this embodiment provides a modular intelligent control method for an assembled heat pump energy station. The main integrated control procedures include:

[0062] S1, automatically start the machine and run it to determine whether there is an operable heat pump unit. If so, open the valve of a heat pump unit with the shortest running time. Otherwise, if the unit valve fails, open another heat pump unit with a short running time and related valves;

[0063] S2, determine whether the valve is opened to the limit node, if so, execute S3, otherwise, the valve sends an alarm signal that it has not reached the open limit to the alarm module, the unit closes the corresponding valve and opens other valves with the shortest running time, and returns to S1;

[0064] S3. After the corresponding valve of the unit is opened, the chilled water pump and cooling water pump with the shortest running time are started first. After the water pump is turned on, it is determined whether the water pump is running normally. If so, the automatic control system receives the water pump running signal and starts the unit after running for the first set time. Otherwise, the water pump fails, the current water pump is turned off, and the other chilled water pumps and cooling water pumps with the shortest running time are immediately turned on.

[0065] S4, when the corresponding valve of the unit and the water pump with the shortest running time have run for the second set time, start the corresponding unit and run it for the third set time, and judge whether the real-time temperature of the unit when it runs for more than the third set time reaches the set temperature. If so, directly execute S6, otherwise, execute S5;

[0066] S5, determine whether the unit load rate reaches the set maximum value, if so, then start another unit with the shortest running time, and at the same time start the corresponding valve of the unit and the water pump with the shortest cumulative time except for the running time and faults, otherwise, execute S6;

[0067] S6, judging whether the number of units in operation is greater than 1, if so, executing S7, otherwise, the units automatically reduce load and operate;

[0068] S7, judging whether the real-time outlet water temperature of the unit reaches the set value, if so, executing S8, otherwise, continuing to operate the unit;

[0069] S8, judging whether the real-time outlet water temperature of the unit is higher than the set value, if so, turning on the cooling circulation pump and the unit to maximize the energy efficiency, otherwise, executing S9;

[0070] S9, determine whether the unit is loaded, if so, execute S10, otherwise, the automatic control system shuts down the unit and the cooling water pump, and only the refrigeration pump circulates;

[0071] S10, determine whether the load rate is lower than 25%, if so, shut down one unit and the corresponding water pump and valve, otherwise, continue to operate the unit;

[0072] S11. The system sets a low-pressure pump stop system to determine whether the real-time system pressure is lower than the set value. If so, the system stops the pump for protection and sends an alarm signal to the alarm module. Otherwise, it continues to run.

[0073] S12, the water replenishment module automatically controls according to the pressure value set by the system to determine whether the real-time pressure of the water pump is consistent with the set value. If so, it operates normally, otherwise, execute S13;

[0074] S13, judging whether the real-time pressure of the water pump is lower than the set value, if so, automatically replenishing water, otherwise, stopping the pump and sending an alarm signal to the alarm module;

[0075] S14, judging whether the real-time pressure of the valve is higher than the valve opening pressure value, if so, the system drains water, otherwise, it operates normally;

[0076] S15. Determine whether the real-time pressure of the valve reaches the valve closing pressure value. If so, the drain valve is closed; otherwise, it operates normally.

[0077] In this embodiment, a modular intelligent control method for an assembled heat pump energy station is provided, wherein the water pump adopts frequency conversion control, the chilled water pump adopts the most unfavorable voltage difference at the end for PID automatic adjustment, and the ground source side adopts the ground source supply and return water temperature difference for PID adjustment.

[0078] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0079] The present invention is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0080] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0081] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A modular intelligent control method for an assembled heat pump energy station, characterized in that: include: Use the modular intelligent control system of the assembled heat pump energy station to obtain the monitoring signal of the unit's automatic control module; Performing unified processing according to the monitoring signal of the unit automatic control module to obtain standardized installation data of the corresponding unit automatic control module; Analyzing and processing the standardized installation data of the unit automatic control module to obtain the corresponding terminal load demand result; According to the terminal load demand result, the communication control connection of the unit automatic control module is performed based on the central intelligent control module to obtain the modular intelligent control result of the assembled heat pump energy station; Wherein, the monitoring signal includes a unit communication signal, a water pump monitoring signal, a terminal temperature signal and a terminal pressure signal.

2. A modular intelligent control method for an assembled heat pump energy station according to claim 1, characterized in that: The standardized installation data of the corresponding unit automatic control module obtained by uniformly processing the monitoring signal of the unit automatic control module includes: Performing unified numbering processing according to the monitoring data of the unit automatic control module to obtain standard numbering information; Performing unified wiring processing on the unit automatic control module according to the standard number information to obtain standard wiring information; Performing unified control processing on the automatic control program according to the standard number information and the standard wiring information to obtain the corresponding standardized program; The standard number information, standard wiring information and standardized procedures are used as standardized installation data of the unit automatic control module.

3. A modular intelligent control method for an assembled heat pump energy station according to claim 1, characterized in that: The corresponding terminal load demand results obtained by analyzing and processing the standardized installation data of the unit automatic control module include: Acquire the unit, valve and water pump operation data in the unit automatic control module according to the standardized installation data of the unit automatic control module; According to the unit, valve and water pump operation data in the unit automatic control module, corresponding real-time temperature data, real-time pressure data and unit load data are respectively obtained; The real-time temperature data, real-time pressure data and unit load data are used to perform analysis and processing to obtain the corresponding terminal load demand result.

4. A modular intelligent control system for an assembled heat pump energy station according to any one of claims 1 to 3, characterized in that: It includes a central intelligent control module and several unit automatic control modules; the central intelligent control module includes a PLC controller, a touch screen, a power supply, relays and terminals, which are used to manage and control the integration of the unit automatic control modules; the unit automatic control module includes a unit, an intelligent control device, and an independent automatic control program, which is used to independently control the operation of the unit; the central intelligent control module and the unit automatic control module are connected through a communication interface; wherein the number of the unit automatic control modules is at least four.

5. The modular intelligent control system of an assembled heat pump energy station according to claim 4, characterized in that: The unit includes a chiller, a heat pump unit, an air-cooled unit or a boiler; the intelligent control equipment includes a unit, a valve, a water pump and a sensor; the automatic control program is a fixed program prefabricated by standardization; Among them, the standardized prefabrication is a unified process of modular prefabrication production, equipment assembly and program debugging.

6. The modular intelligent control system of an assembled heat pump energy station according to claim 4, characterized in that: The communication interface includes RS485, TCP / IP, and wireless communication interface.

7. The modular intelligent control system of an assembled heat pump energy station according to claim 6, characterized in that: The system realizes the fixed control point assembly and standardized installation of the unit control modules by controlling the communication integration between the central intelligent control module and the automatic control programs in several unit automatic control modules; The fixed control points are fixed control circuits and interfaces of the unit control module, the control circuits are standardized prefabricated circuits, and the standardized installation is communication integration installation according to standardized fixed procedures.

8. The modular intelligent control system of an assembled heat pump energy station according to claim 7, characterized in that: The sensors are temperature sensors, pressure sensors and liquid level sensors, which are used to collect the operation data of the unit in real time.

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