Online management method for temporary control changes of nuclear power plant control system

Abstract

The invention belongs to the technical field of nuclear power plant control systems, and in particular to an online management method for temporary control changes of a nuclear power plant control system. The method comprises the following steps: 1) acquiring data, converting DCS configuration data into configuration text information, converting DCS function drawing from a CAD format file to a JPG image format; 2) establishing a signal mapping relation and a configuration data module state table; 3) establishing a data sheet of risks associated with instrumentation and control equipment, and determining a risk knowledge rule between the module state of software corresponding to instruments and an equipment state; 4) integrating the data and the drawing by using the signal mapping relation and the configuration data module state table as a relational model; 5) during change initiation, check and approval, prompting workers in respective links of change management the influence of the change on the control system; 6) enabling a user to inspect a field configuration data module state and to import the configuration data module state information inspection result into the system; and 7) designing a conflict detection module.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant control systems, and in particular relates to an online management method for temporary control changes of the nuclear power plant control system. Background technique [0002] At present, nuclear power plants generally use the distributed control system (DCS for short) to realize the control of nuclear power plants, because the DCS system undertakes most of the control functions of the whole plant, the configuration data of the entire DCS system is very large, and the DCS system will be comprehensively checked before leaving the factory. However, a certain number of defects in the DCS configuration may still be found during on-site commissioning and unit operation; during on-site commissioning and unit operation, control system design optimization or process system control changes are still required; The high convenience and high accessibility of the measures, there are a large number...

AI Technical Summary

Problems solved by technology

For the management and control of change documents, offline paper supplemented by electronic maintenance work orders is adopted, and manual management is basically the main way. The management efficiency is low, and the burden on the personnel in the change management position is relatively large.

[0005] (2) Temporary changes of multiple process systems may need to be executed or exist in the system at the same time, which brings great difficulty to work risk control. The current management method is difficult to prevent and control cross risks

[0006] (3) Changes lead to configuration changes in the system and module status changes that cannot be known by instrument control inspection personnel, and it takes a lot of time and cost for inspection personnel to confirm state deviations one by one

[0007] (4) The implementation of temporary mandatory orders cannot be effectively tracked, and it is difficult to trace when and which temporary mandatory orders were implemented in the system

[0008] (5) Programmed human error traps and high-risk operation links involved in software enforcement or change in the control system cannot be effectively identified, reminded and prevented

[0009] In view of the high frequency of temporary control changes during power plant commissioning and operation, the process management, document management and change history tracking of changes are difficult