PSO-based pressurized water reactor deaerator water level control method

A water level control and deaerator technology, applied in the control field, can solve the problems of nonlinearity, PID controller can not meet the high precision requirements of the controller, etc., and achieves good stability, fast response time, and good system robustness. Effect

Pending Publication Date: 2021-07-13
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology

However, due to the time-varying uncertainty and nonlinearity in the actual industrial control system, the traditional PID controller often fails to meet the high-precision requirements of the controller in modern society.

Method used

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  • PSO-based pressurized water reactor deaerator water level control method
  • PSO-based pressurized water reactor deaerator water level control method
  • PSO-based pressurized water reactor deaerator water level control method

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0033] The PSO-based method for controlling the water level of a PWR deaerator specifically includes the following steps:

[0034] 1) Obtain the water level operation data of the deaerator:

[0035] On the 900MW pressurized water reactor simulator in Daya Bay, the water level of the deaerator was subjected to a step disturbance experiment, and the operation data was obtained. Compared with the actual operation data of the Daya Bay pressurized water reactor nuclear power plant, the error was less than 1%, indicating that the step disturbance signal input The data generated by the simu...

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Abstract

The invention relates to a PSO-based water level control method for a deaerator of a pressurized water reactor, which comprises the following steps that: system identification is performed on data by using an MATLAB toolbox on the basis of the operation data of the deaerator of a simulation unit of a 900MW nuclear power station in Da Asian Bay at a water level in a certain time period to obtain a transfer function model of a deaerator control system; and a traditional PID controller is designed for a mathematical model of the control system; then, a variance is introduced into a weight coefficient of a particle swarm algorithm to evolve towards an expected weight, and meanwhile, an asynchronous change measure method is adopted for a learning factor, so that an improved PSO optimization PID parameter controller is obtained. The method is high in data identification precision, high in algorithm convergence speed and enhanced in system stability, and can improve the deaerator water level adjustment delay to a certain extent and improve the nuclear power generation efficiency.

Description

technical field [0001] The invention relates to a control technology, in particular to a PSO-based method for controlling the water level of a deaerator in a pressurized water reactor. Background technique [0002] The deaerator is one of the key equipment of the boiler and heating system. The deaerator removes oxygen and other gases in the boiler feed water to ensure the quality of the feed water. At the same time, the deaerator itself is a hybrid heater in the feedwater recuperation heating system, which plays the role of heating the feedwater and increasing the temperature of the feedwater. The function of the deaerator water tank is to store feed water and balance the difference between the amount of water supplied by the feed water pump to the boiler and the amount of condensed water pumped into the deaerator. , to meet the needs of boiler feed water, so deaerator water level control is an important link in the process of nuclear power generation. The traditional PID ...

Claims

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Application Information

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IPC IPC(8): G05D9/12
CPCG05D9/12
Inventor 杨旭红闻天润金宏艳吴亚雄方浩旭李辉张苏捷
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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