Method for designing optimal PID parameters of closed-loop control system of nuclear power plant

Abstract

The invention belongs to the technical field of nuclear industry intelligent algorithm application, and particularly relates to a method for designing optimal PID parameters of a closed-loop control system of a nuclear power plant. The method comprises the following steps of: S1, determining the closed-loop control system and a controlled object needing PID parameter optimization; S2, performing nuclear power plant analogue simulation on a nuclear power plant design verification platform, and operating the closed-loop control system; S3, determining a model structure and model parameters of the controlled object, and identifying the controlled object by using a genetic algorithm to obtain model parameters for optimal identification; S4, carrying out PID parameter optimization by using a genetic algorithm to obtain the optimal PID parameters; S5, substituting the controlled object model and the optimal PID parameters into a closed-loop control system block diagram for simulation through mathematical software until the optimal PID parameters meet engineering index requirements; and S6, writing the optimal PID parameters meeting the engineering index requirements into an engineering design file. The PID parameters obtained by adopting the method can be applied to debugging and operation of the closed-loop control system of the nuclear power station.

Description

technical field [0001] The invention belongs to the technical field of intelligent algorithm application in the nuclear industry, and in particular relates to a design method for optimal PID parameters of a closed-loop control system of a nuclear power plant. Background technique [0002] With the development of China's nuclear power technology, the requirements for the safety and reliability of nuclear power operation have gradually increased, and higher requirements have been put forward for the degree of automation of process control in nuclear power plants. This requirement includes control safety, reliability and stability. , which also includes the accuracy of the control results. There are many closed-loop control systems in the nuclear power plant system, and the closed-loop PID control method is adopted to ensure the automatic, safe and stable operation of the related systems of the nuclear power plant. [0003] In the previous project design, setting the PID param...

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Problems solved by technology

For the Hualong No. 1 nuclear power plant designed by us, the PID parameter setting of the closed-loop control system is a very important link in the design process. If there is no certain theoretical basis and calculation basis, the PID parameters should be debugged during the commissioning and operation of the nuclear power plant. setting, it increases the workload of on-site personnel and the risk of system instability

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