Method and system for judging reliability of man-machine interface of digital control system through human factor reliability

Abstract

Disclosed is a method for judging the reliability of DCS man-machine interfaces through an HRA, comprising: using a plurality of man-machine interfaces in an associated digital control room during the processing of an accident as a plurality of nodes, connecting the plurality of nodes in sequence in accordance with the sequence of monitoring or operating the plurality of man-machine interfaces, and establishing a work-team response tree; using a human error type generated by monitoring or operating the nodes as a top node, using a human error mode as a middle-layer node, and using an error source of an action of personnel monitoring or operation as a bottom-layer node to establish a fault tree of a human error of the nodes; determining factors that influence the bottom-layer node and an influence probability of each factor, and computing the probability of the human error; and judging the reliability of the man-machine interfaces in accordance with an error probability value obtained by computing in step S3. The present invention systematically describes the relationship between the man-machine interface and the human error, can recognize the man-machine interface with a larger human error probability, and provides a basis for improving the man-machine interfaces of a digital master control room in a complex industrial system.

Description

technical field [0001] The present invention relates to the field of digital control of power plants, in particular to the field of digital control of nuclear power plants, in particular, to a method for judging the reliability of DCS (digital control system, digital control system) man-machine interface through HRA (human factor reliability analysis) ,system. Background technique [0002] In recent years, the safety evaluation of large-scale and complex industrial systems has increasingly considered the behavior and activities of people in the system. Human-system interaction is considered an important contributor to the safe operation of complex industrial systems. However, due to the numerous human behaviors and human-machine interfaces in complex industrial systems, how to consider and calculate the impact of human-machine interfaces in complex industrial systems on system security is a difficult point. [0003] The main personnel behavior of complex industrial system ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and system for judging the reliability of the DCS man-machine interface through HRA, which can significantly save a large amount of industrial safety costs, so as to solve the problem that the human factor reliability analysis technology in the existing man-machine interface has been unable Technical issues that reflect the impact of changes in the human-machine interface in the digital control room on personnel behavior

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