Water level control method of steam generator in nuclear power system based on sarsa

Abstract

The present invention relates to the technical field of nuclear power system control, and provides a method for controlling the water level of a steam generator in a nuclear power system based on SARSA, including: Step 1: Designing a SARSA controller for controlling the water level of a steam generator in a nuclear power system: selecting the water level Part of the influencing factors and part of the control quantity are respectively used as the input and output of the SARSA controller, and the control objectives are set; Step 2: Separate interval divisions for the input and output parameters of the SARSA controller, and design reward rules; Step 3: Train the SARSA controller update the Q table; Step 4: If the training result does not meet the control target, adjust the parameters of the SARSA controller according to the training result, and go to Step 3; otherwise, save the Q table. The invention can simultaneously realize rapid, accurate and stable control of the water level of the steam generator, and realize that the water level controller of the steam generator has the ability of self-learning under variable working conditions and system characteristic decline.

Description

technical field [0001] The invention relates to the technical field of nuclear power system control, in particular to a method for controlling the water level of a steam generator in a nuclear power system based on SARSA. Background technique [0002] As a source of ship power, the nuclear power system needs to meet stable operation under various complex working conditions. As a key component of the primary and secondary circuits, the steam generator's stable operation is an important guarantee for the normal operation of the entire nuclear power system. The water level is an important indicator to measure the operating status and safety of the steam generator system, and must be kept within a safe range. A high water level will cause damage to the turbine blades in the secondary circuit, and a low water level will cause damage to the U-shaped tubes that complete the heat exchange or failure of the reactor heat dissipation. Therefore, it is necessary to design a steam gene...

AI Technical Summary

Problems solved by technology

[0003] The problem of steam generator water level control lies in false water level, small controllable range, rapid and accurate response of the controller, complex physical process, and changes in one parameter will cause chain changes in other parameters, etc.

The existing steam generator water level control methods mostly use PID control, active disturbance rejection control and other technologies. These technologies are difficult to properly solve the above problems, and cannot satisfy the three elements of fast, accurate and stable control systems at the same time, and do not have Self-adaptive learning ability under working condition and system characteristic decline

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