City intelligent drainage control system based on hierarchical control structure

Abstract

The invention discloses a city intelligent drainage control system based on a hierarchical control structure, which consists of two relatively independent and interconnected upper network control systems and a pump station site control system with a downstream PLC as the core. The city intelligent drainage control system has the hierarchical control structure with a number of control cores for the large-system design, an industrial personal computer that is high in computing power and convenient in networking is constructed as the upper control core of the pump station, the network-based remote control system is established, global operating condition flow and water level are measured in real time, and according to the extreme value principle and optimization theory, appropriate optimization and coordination control strategies and scheduling methods are devised. At the same time, the reliable-performance PLC is used as the lower control core to construct the local intelligent control system, to ensure long-term non-stop operation of the drainage system to intelligentize the urban distributed pumping station drainage system, and to improve the level of urban waterlogging prevention.

Description

technical field [0001] The invention belongs to the field of urban construction and planning, and in particular relates to an urban intelligent drainage control system based on a layered control structure. Background technique [0002] In recent years, with the continuous acceleration of the urbanization process, the urban "heat island effect" has become more and more obvious. The frequent occurrence of sudden heavy rainfall has caused various degrees of waterlogging in major cities, and at least caused urban traffic congestion. If it is serious, it will cause loss of personnel and property, and urban waterlogging has become the main disaster factor that hinders the stable development of cities. On July 21, 2012, Beijing suffered a torrential rainstorm, which caused 79 deaths, 163 immovable cultural relics were damaged to varying degrees, 10,660 houses collapsed, and 11.64 billion yuan in economic losses; the strong typhoon "Fitte" caused Wenzhou, Zhejiang Province, Heavy r...

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Problems solved by technology

Although there are also studies on the global optimal control of urban drainage systems, they are still in their infancy, and the control objectives and control methods are relatively single. There is no exploration of how to achieve coordinated optimal scheduling based on the interaction of pumping stations under the influence of regional working conditions and tributary disturbances. To make full use of the sewage discharge capacity of each pump station, so as to realize intelligent drainage and energy saving, and improve the level of urban waterlogging prevention and control

[0007] To sum up, at present, the decentralized control method commonly used by various pump stations operates drainage according to their respective working conditions, and it is difficult to achieve regional coordination without the necessary global information exchange. Moreover, this conventional centralized control method is subject to network signal interruption, blockage, and data loss. Influenced by other factors, the control effect is not ideal

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