Nuclear power plant equipment fault early warning analysis method and system based on dynamic simulation model

Abstract

The invention discloses a nuclear power plant equipment fault early warning analysis method and system based on a dynamic simulation model. The system comprises a nuclear power station real-time / historical database which is used for providing basic parameters needed by the dynamic simulation model during normal operation; the dynamic simulation model built based on a nuclear power station total range analog machine, wherein the dynamic simulation model is used for providing reference parameter values of all monitoring equipment; a real-time data collection center which is used for measuring the real-time operation parameter values of all monitoring equipment; and a dynamic early-warning analysis platform which is used for inputting the real-time operation parameter values of all monitoring equipment and the corresponding reference parameter values into a trend early-warning model, carrying out the dynamic early-warning analysis of all monitoring equipment through employing a comprehensive early-warning analysis strategy in the trend early-warning model, and starting early-warning for the monitoring equipment which is determined to be fault equipment through the comprehensive early-warning analysis strategy. The method and system can recognize the fault equipment in a nuclear power plant in advance during operation and start early-warning, so as to prevent the fault equipment from being damaged further, thereby avoiding an accident happening to the nuclear power plant, and improving the operation efficiency of the nuclear power plant.

Description

technical field [0001] The invention belongs to the field of nuclear power plant equipment monitoring, and more specifically, the invention relates to a nuclear power plant equipment failure early warning method and system based on a dynamic simulation model. Background technique [0002] The operating status of nuclear power plant equipment is of great significance to the normal operation and production of the entire nuclear power plant. On the one hand, when key equipment fails, it may have a major impact on the entire system and other related equipment, causing unplanned outages, reducing production efficiency, and may even cause related emissions to exceed standards. On the other hand, due to the limitation of the production environment, the key equipment of nuclear power plants generally requires high temperature and high pressure, corrosion resistance, radiation resistance and other characteristics, which determines the characteristics of high manufacturing cost, high ...

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Problems solved by technology

[0004] Among them, the technical defect of the high-low line alarm method is that the alarm is only triggered when the fault measurement point reaches the early warning line. At this time, the fault information is relatively obvious, and the equipment damage is already serious. It cannot detect abnormal equipment in advance, so it cannot guarantee nuclear power. Safe and stable operation of the plant

The technical defect of the early warning method based on the mechanism model is: on the one hand, this method needs to linearize the system. With the development of modern mass production, the structure of modern equipment, especially the key equipment of nuclear power, tends to be more complex and the degree of coupling becomes more and more complicated. The higher the value, the method of using the mechanism model will cause the accuracy of the model to be low and the error will increase

On the other hand, the cost of modeling is high, and it is easily disturbed by the noise of the site environment

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