Redundant control equipment, system and control method in digital instrument control system

Abstract

The invention belongs to the technical field of a digital instrument control system in a nuclear power station and provides a redundancy control equipment of the digital instrument control system, the digital instrument control system and a control equipment main / standby redundancy control method. The control equipment comprises a main control device and a standby control device, wherein the main control device is provided with a first controller and a first CPLD, the standby controller is provided with a second controller and a second CPLD, the first controller and the second controller are respectively provided with a fault determining unit, a fault state result is outputted to the first CPLD when the fault determination unit of the first controller determines that the main control device is in fault and the standby control device is not in fault, the main control device is set by the first CPLD to be in a fault state, the second CPLD is set to be in a main state when a fault state of the first CPLD is acquired by the second CPLD, and the standby control device becomes a main control device. The whole control equipment is advantaged in that a redundancy arbitration speed is faster, and reliability is higher.

Description

technical field [0001] The invention relates to a digital instrument control system in a nuclear power plant, in particular to a control device with redundant functions in the digital instrument control system, a digital instrument control system and a master-backup redundant control method for the control device thereof. Background technique [0002] As the key equipment of nuclear power plant, the digital instrument and control system, its main controller realizes complex calculation and control, so the redundant implementation of the controller is of great significance to improve the safety and reliability of the entire digital instrument and control system. In the early days, the active / standby redundancy schemes of controllers in various industries adopted software methods, which had the disadvantages of slow redundancy arbitration and large switching disturbances. With the development of technology, the active / standby redundancy schemes of controllers in other industrie...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of slow redundancy speed and large disturbance of active / standby switching in the digital instrument control system of nuclear power plants in the prior art, the present invention provides a redundant Control equipment with redundant functions in digital instrument control system with fast arbitration speed and non-disturbance switching, digital instrument control system and control equipment master-backup redundancy control method

Images