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Energy-saving control method of distributed multi-pump parallel system

An energy-saving control and distributed technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve problems such as poor applicability and complicated solution process, and achieve rapid distribution, convenient expansion, and enhanced adaptive topology The effect of the ability to change

Active Publication Date: 2018-12-21
TSINGHUA UNIV
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Problems solved by technology

For example, the application number 201510314137.9 is an invention patent titled "a water pump system based on a decentralized network, a water pump controller and a control method". The flow distribution is changed by adjusting the expected efficiency. This method has poor applicability and the solution process Complicated and other disadvantages

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings. However, it should be understood that the accompanying drawings are provided only for better understanding of the present invention, and they should not be construed as limiting the present invention.

[0027] The present invention provides an implementation structure of a distributed multi-pump parallel system as an example, not limited thereto, which includes several water pumps 1, intelligent control nodes 2, and frequency converters 3, wherein the water pump 1, intelligent control nodes 2 and frequency converters The quantity of 3 is the same, and the specific quantity is not limited, and can be set according to specific needs. Each water pump 1 is connected to an intelligent control node 2 through a frequency converter 3 . The intelligent control nodes 2 communicate with each other in a wired or wireless manner, and the intelligent control nodes 2 are equal to ea...

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Abstract

The invention relates to an energy-saving control method of a distributed multi-pump parallel system. The method comprises the following steps that an intelligent control node is initialized, and an execution parameter is set; the intelligent control node initiating the adjustment randomly generates a certain quantitative speed ratio sample points and the certain quantitative speed ratio sample points are compared with execution parameters, a working state of a water pump and a selection condition of the speed ratio sample points are determined, the calculation result is transmitted to a neighbor node; the neighbor node performs feedback according to the received information, the selection condition of the speed ratio sample points are determined; if the node does not exist the next node,the iteration of a round is completed, and the next iteration process is carried out; if the neighbor intelligent control node exists the next neighbor intelligent control node, the speed ratio samplepoints and the corresponding calculation results are transmitted to the next neighbor intelligent control node; when the number of the calculation round of all the intelligent control nodes is largerthan the agreed number of the calculation round, the iteration is ended, all the intelligent control nodes adjust an output frequency of a frequency converter to control the corresponding water pumpaccording to the current optimal speed ratio information.

Description

technical field [0001] The invention relates to an energy-saving control method of a distributed multi-pump parallel system, and relates to the technical field of building energy conservation. Background technique [0002] In the field of public buildings, people put forward higher and higher requirements for the environment, which makes the proportion of energy consumption of the central air-conditioning system gradually increase, and 15% to 30% of the energy consumption of air-conditioning is consumed in the operation of water pumps. In the central air-conditioning water system, it is common for multiple pumps to be connected in parallel. For the parallel connection of multiple pumps, there will be a requirement for the total flow and head set value. If the flow distribution of the parallel pumps is unreasonable, the total energy consumption will be considerable. The existing control mode generally adopts the master-slave control mode. This control mode has problems such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/46F24F11/62F24F11/64F24F11/85
CPCF24F11/46F24F11/62F24F11/64F24F11/85
Inventor 赵千川王雪涛杨文王奕凡
Owner TSINGHUA UNIV
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