电子器件2025，Vol.48Issue(1)：229-236,8.DOI:10.3969/j.issn.1005-9490.2025.01.037
核电厂棒控系统电源卡寿命评价技术研究
Research on Life Evaluation Technology of Power Supply Board in Nuclear Power Plant Rod Control System
摘要
Abstract
The structure principle of instrument control board of nuclear power plant rod control system is complex and the quality re-duction law is fuzzy.Generally,the fixed periodic replacement pre-maintenance strategy is adopted,which has high maintenance cost and poor reliability.A life evaluation technique for instrument control board is presented.Firstly,the circuit structure,principle analysis and module,device failure analysis are carried out.Then the accelerated aging test is performed for key sensitive devices.The perform-ance degradation parameters of the device are collected in the experiment,and a data-driven quality reduction model is established.Fi-nally,the circuit running simulation is conducted to characterize the device degradation as the overall performance degradation of the board.Combined with Monte Carlo simulation and 3σ criteria,the life of the board is evaluated.The research results of life evaluation of power supply board of rod control system show that the life evaluation technology is accurate and reliable.Besides,this technology can provide theoretical guidance for board replacement strategy and long-term operation and maintenance.关键词
仪控板卡/蒙特卡洛仿真/寿命评价Key words
instrument control board/Monte Carlo simulation/life evaluation分类
动力与电气工程引用本文复制引用
周宇,熊剑,汪亮,马一鸣,孔静..核电厂棒控系统电源卡寿命评价技术研究[J].电子器件,2025,48(1):229-236,8.基金项目
河北省自然科学基金项目(E2021202068) （E2021202068）
