Speed regulating and energy saving control method for multi-pump station municipal drainage pipe network system

Abstract

The invention relates to a speed regulating and energy saving control method for a multi-pump station municipal drainage pipe network system. In the operation of the traditional drainage pump station, mainly relies on the labor experience to control the start, stop, operation and volume switching of a drainage pump are controlled mainly according to worker experience. According to the invention, by combining the mechanical characteristic of a turbine and the pipe network characteristic of a water pump, a water pump characteristic equation of a drainage system is obtained with methods such as parabola fitting, exponential curve fitting and the like; the numbers of single pump station speed-regultion pumps and constant-speed pumps are determined according to a water pump discharge-delivery lift characteristic curve; an optimum control method is used for realizing the energy saving control method for a pump station where multiple speed-regulation pumps operate in the mode of parallel connection; a pipe network optimization control module and energy saving control strategy of a multi-pump station is obtained according to constraint conditions of pipe network operation condition,a manhole, a pipeline, an impunding reservior and the like; and through feeding back control information to a bottom layer PLC (programmable logic controller) of the drainage system, the energy saving control of the whole system pump station is realized, and the unattended pump control is achieved.

Description

technical field [0001] The invention belongs to the field of industrial automatic control, and relates to pumping station modeling and energy-saving control technology, in particular to single pumping station modeling and energy-saving control technology of urban drainage system, and multi-pumping station pipe network optimization control strategy. Background technique [0002] With the rapid development of the city, the energy problem is becoming more and more tense, and the energy saving of the drainage system has also highlighted its importance. Among them, the total energy consumption of the pumping station is dominated by electric energy consumption. Factors such as unreasonable network control have further aggravated consumption. Therefore, the optimization and energy-saving control of existing pumping stations is of great significance to alleviate the shortage of urban electricity consumption. [0003] At present, the domestic drainage system pumping stations are mos...

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Problems solved by technology

[0009] The method proposed by the invention can effectively solve the problem of energy-saving control of pumping stations in the drainage system, and has achieved good results in case analysis and simulation

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