Method for allocating distributed control system signals of nuclear power plant

Abstract

The invention relates to a method for allocating distributed control system signals of a nuclear power plant. The method is used for allocating signals between insecure digital control system cabinets of the nuclear power plant. The method comprises the following steps of: first dividing the whole nuclear power plant into a plurality of functional groups on the basis of a power production process flow; then regulating each functional group according to project nodes, organizing a system required by each node, and closely allocating system signals related to the same node in each functional group; and finally performing cabinet signal allocation according to equipment redundancy, and scattering control and monitoring signals of the same system according to a process loop. Function processing requirements during signal allocation are met, a problem about a project progress is also solved, the equipment redundancy is combined, the availability and reliability of the system are improved, and the method has high practical value and economic value.

Description

technical field [0001] The invention relates to a method for distributing signals of a distributed control system of a nuclear power plant, which is used for signal distribution between cabinets of the non-safety level digital control system of the nuclear power plant. Background technique [0002] Although the digital instrument control system has already been maturely applied in other thermal power, petrochemical and other fields, the digital application of nuclear power plants is still in its infancy. In the process of transforming from analog technology to digital technology, it is not just a simple equipment update, but must be considered in combination with the characteristics of nuclear power plants in order to give full play to the advantages of digital technology. The process flow of nuclear power plants is complex and the amount of signals is large. In the face of a large number of signals, how to allocate them reasonably should fully consider the following charact...

AI Technical Summary

Problems solved by technology

This allocation method has clear boundaries, relatively independent functions, and a single external interface

However, this method does not consider the project schedule in the design stage. Due to the long design and construction cycle of nuclear power plants and the long cycle of equipment design and manufacturing, it is often impossible to provide the equipment needed on site according to the ideal schedule. If this issue is not considered in advance, It may be found in the actual project that only a few system functions are urgently needed on site, but it involves the manufacture and supply of a large number of cabinets, which brings corresponding burden and difficulty to the subsequent project implementation stage, and even affects the overall construction of the project cycle

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