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A kind of intelligent operation method and system for variable frequency speed regulation of water supply pump set

A technology of variable frequency speed regulation and operation method, which is applied in the direction of pump control, complex mathematical operations, liquid variable capacity machinery, etc., and can solve the problems that the pump group variable frequency speed regulation control system cannot achieve high-efficiency control, etc.

Active Publication Date: 2022-05-24
河北建投水务投资有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes an intelligent operation method and system for frequency conversion speed regulation of water supply pump sets, which solves the problem that the pump set frequency conversion speed regulation control system in the related art cannot achieve efficient control

Method used

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  • A kind of intelligent operation method and system for variable frequency speed regulation of water supply pump set
  • A kind of intelligent operation method and system for variable frequency speed regulation of water supply pump set
  • A kind of intelligent operation method and system for variable frequency speed regulation of water supply pump set

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Experimental program
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Effect test

Embodiment 1

[0035] like figure 1 As shown, the flow chart of the intelligent operation method for variable frequency speed regulation of the pump set in this embodiment includes:

[0036] K100: Obtain the current total flow demand;

[0037] The current total flow demand is given by an external module (water supply scheduling system or water volume prediction system), and can be obtained by those skilled in the art through conventional methods, which will not be repeated here.

[0038] K200: According to the current total flow demand, use the resistance formula of the water supply pipeline system to obtain the current head demand;

[0039] Specifically include:

[0040]

[0041] Among them, H 需 For the current head demand, H st is the static head of the water pump. In this embodiment, each water pump is connected in parallel, and the static head of each water pump is equal. S is the pipeline resistance coefficient, and Q 需 is the current total flow demand.

[0042] K300: According...

Embodiment 2

[0203] This embodiment proposes an intelligent operation system for variable frequency speed regulation of a pump set, including:

[0204] The first obtaining unit is used to obtain the current total flow demand, the performance parameters of each fixed-frequency pump and the performance parameters of each variable-frequency pump;

[0205] The first calculation unit is used to obtain the current head demand by using the resistance formula of the water supply pipeline system according to the current total flow demand;

[0206] The first processing unit is used to obtain all the water pump combinations that meet the current total flow demand and the current head demand according to the current total flow demand and the current head demand; the water pumps in each of the water pump combinations include fixed frequency pumps and / or variable frequency pumps , the sum of the flow of all pumps in each pump combination is greater than or equal to the current total flow demand, and the...

Embodiment 3

[0242] This embodiment proposes a computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned intelligent operation method for variable frequency speed regulation of a pump set is realized. step.

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Abstract

The invention relates to the technical field of water supply pump control, and proposes an intelligent operation method and system for frequency conversion and speed regulation of water supply pump sets. The intelligent operation method of frequency conversion and speed regulation for pump sets includes: obtaining the current total flow demand; The current head demand; according to the current total flow demand and the current head demand, all pump combinations that meet the current total flow demand and the current head demand are obtained; the working point calculation is performed to obtain the working point data of all pumps in the candidate pump combination, and Calculate the efficiency of the candidate water pump combination; when the efficiency of the candidate water pump combination is greater than the efficiency of the optimal water pump combination, use the candidate water pump combination as the optimal water pump combination; switch the water pump combination and repeat the steps of calculating the operating point; output the optimal water pump combination As a recommended water pump combination. Through the above technical solution, the existing industrial control system of the pump set is upgraded to an intelligent operation system, and the operating efficiency of the water supply pump set is improved.

Description

technical field [0001] The invention relates to the technical field of water supply pump control, in particular to an intelligent operation method and system for variable frequency speed regulation of a water supply pump group. Background technique [0002] Pumping station is an indispensable part of urban water supply, including multiple parallel pump units. In actual operation, different numbers of pumps are controlled to operate according to different water volumes. At present, the power consumption of pumping stations is relatively high, and the existing measures to control the decrease of energy consumption are not ideal. Therefore, how to further reduce the energy consumption of the pumping station under the existing process and electrical equipment is a problem that we need to study and explore. SUMMARY OF THE INVENTION [0003] The invention proposes an intelligent operation method and system for variable frequency speed regulation of a water supply pump group, wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/06F04B49/20G06F17/11
Inventor 张自力田志民张娟王泽民张醒郎华伟张静
Owner 河北建投水务投资有限公司