中国电机工程学报2024，Vol.44Issue(24)：9796-9810,中插24,16.DOI:10.13334/j.0258-8013.pcsee.231467
基于序贯Monte Carlo模拟法的MMC系统可靠性分析和维修优化
Reliability Analysis and Maintenance Optimization of MMC System Based on Sequential Monte Carlo Simulation Method
摘要
Abstract
Existing research on the reliability analysis of modular multilevel converters(MMC)considering maintenance is constrained by the complex structure of the system.Typically,due to this complexity,the model of the MMC system is simplified,making it difficult to directly establish a system-level reliability model.Consequently,these simplified models can only provide the reliability of system.In the context of considering preventive maintenance,current studies often presume that system repairs restore components to their original,new reliability levels,while overlooking the consequences of diminished reliability in unreplaced components on future maintenance efforts.Based on sequential Monte Carlo simulation,this paper conducts quantitative reliability assessment of the MMC system,which closely resembles practical engineering scenarios.The influence of preventive maintenance strategy and bridge arm redundancy strategy is considered.A system-level simulation-based reliability modeling method for MMC,considering preventive maintenance,is proposed.Various system-level reliability metrics are obtained through this approach.Building upon this foundation,a method for determining the optimal maintenance interval is presented,which is developed with cost and downtime as optimization objectives,and the optimal maintenance periods for different replacement strategies(block replacement strategy and age replacement strategy)are determined by exhaustively searching for the corresponding optimization objectives.Finally,the system-level reliability levels and optimal maintenance periods for MMC systems with different redundancy are determined through practical examples.关键词
序贯蒙特卡洛模拟法/可靠性建模/定期维修/模块化多电平换流器Key words
sequential Monte Carlo simulation/reliability modeling/periodic maintenance/modular multilevel converter(MMC)分类
信息技术与安全科学引用本文复制引用
郝加兴,郝全睿,丁磊..基于序贯Monte Carlo模拟法的MMC系统可靠性分析和维修优化[J].中国电机工程学报,2024,44(24):9796-9810,中插24,16.基金项目
国家重点研发计划项目(2018YFB0905800).National Key R&D Program of China(2018YFB0905800). （2018YFB0905800）
