Method for controlling water level of reservoir of urban drainage system

Abstract

The invention relates to a method for controlling the water level of a reservoir of an urban drainage system. In the conventional control process, traditional control strategies are adopted mostly, and the intelligent control aspect is less related, therefore the sewage overflow problem and the energy consumption reduction problem cannot be solved well. In the invention, on the basis of analyzing operation experiences of actual operators of the urban drainage system, the whole urban pipe network system is divided into a plurality of layers by utilizing an approximate urban pipe network system established by an urban geographic information management system, each layer can be divided into a plurality of typical drainage system local parts, each local part systematically applies predication control to well solve the local sewage overflow minimization problem, and finally, the whole system region is ensured to achieve a effect of sewage overflow minimization. The control technology provided by the invention can effectively reduce the influence of uncertain factors on the water level, make up the defects of the traditional controller, ensure the stability of a closed-loop system and ensure that a water level value of the reservoir does not exceed an appointed value at the same time.

Description

technical field [0001] The invention belongs to the field of industrial automatic control, relates to predictive control technology in intelligent control, and specifically relates to a method for controlling the water level of a reservoir by predictive control on the basis of layered control principles. Background technique [0002] The main function of the urban drainage system is to collect urban sewage and rainwater and discharge them to sewage treatment plants through sewer pipes. However, due to the limitations of various factors such as the water storage capacity of the sewer pipe, the drainage capacity of the water pump, and the sewage treatment capacity of the sewage treatment plant, the urban drainage system often overflows when the heavy rain comes, which brings serious environmental pollution problems. . [0003] In order to reduce the occurrence of sewage overflow in urban drainage pipes, a method is to build some large storage facilities, such as reservoirs, s...

AI Technical Summary

Problems solved by technology

[0004] 1. It is costly to build some large storage equipment projects, and the equipment is easy to be idle for a long time, and due to the influence of hydrology, government policies, economics and other factors in urban areas, it is impossible to increase the capacity of the sewer without limit so that overflow does not occur practical

[0005] 2. In terms of real-time process control, most of them still use traditional control strategies, less involving intelligent control, which cannot solve the problem of sewage overflow and reduce energy consumption

[0006] 3. In China, due to the low level of automation, there are many uncertainties in the entire drainage system

For traditional control methods, such as PID, PLC control can no longer meet the requirements of the process

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