Reactor abnormal working condition diagnosis and control system

Abstract

The invention discloses a reactor abnormal working condition diagnosis and control system which comprises a fault diagnosis system, a fault decision-making system and an execution system. The fault diagnosis system comprise a signal-based traditional fault monitoring and diagnosis system and a PCA-BP neural network-based intelligent online fault monitoring and diagnosis system, and is used for carrying out state monitoring and diagnosis on real-time operation data of a reactor and determining detailed fault information. The fault decision-making system is used for analyzing the fault information, when the reactor shutdown signal is triggered, the reactor shutdown operation is automatically adopted to guarantee the operation safety of the reactor, and if the shutdown signal is not triggered, the fault diagnosis system judges fault information and the fault type accords with partial loop operation, a mode of rapid power reduction and partial loop operation is adopted to give a corresponding decision instruction. The execution system executes corresponding operation according to the corresponding decision instruction, and when the partial loop operation is needed, the power is rapidly and automatically reduced, and the accident loop and a steam generator are isolated. The maneuvering performance is improved, and the control effect of the reactor power is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of reactor control and fault diagnosis, and in particular relates to a reactor abnormal operating condition diagnosis and control system. Background technique [0002] Small reactors are widely used in the fields of ships, aviation, deep sea exploration, and regional power supply, and are important research directions, among which small pressurized water reactors are the most studied. According to the operating environment and task requirements, small pressurized water reactors need to have the ability to deal with abnormal conditions during operation. In the event of heat pipe damage, loss of flow accidents caused by coolant main pump failure, etc., in order to ensure the maneuverability of the nuclear power plant, the method of partial loop operation and power reduction can be adopted. [0003] How to effectively monitor the operating status of the reactor, carry out real-time fault diagnosis, implement p...

AI Technical Summary

Problems solved by technology

During this process, the rapid movement of the control rods is likely to cause large overshoot and fluctuations in power, which is not conducive to the smooth operation of the reactor.

Secondly, the manual tracking method requires rich experience of the operator. Human error is a hidden danger in operation and safety, and the control effect of manual tracking is not easy to be guaranteed.

In addition, if the traditional power control system is used for automatic control, considering that the controller parameters and structure are designed according to normal working conditions, it is not suitable for the time-varying and time-delay characteristics of abnormal working conditions

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