电网技术2016，Vol.40Issue(4)：1012-1017,6.DOI:10.13335/j.1000-3673.pst.2016.04.005
基于精确隐性故障模型的输电系统连锁故障风险评估
Risk Assessment of Transmission System Cascading Failure Based on Accurate Hidden Failure Model
摘要
Abstract
In this paper, hidden failure of protective relay is investigated and existing hidden failure model was improved. Based on the model, cascading failure risk caused by hidden failure was assessed. Firstly, according to different probabilities of misoperation caused by different hidden failures, hidden failures were categorized in detail. Then hidden failure probability model was established. Secondly, Markov protection model changing with environment and load flow was presented. Markov protection model was based on confidence rule base. Then accurate hidden failure model was established by combining probability model with Markov model. Thirdly, a cascading model with three assessment indexes including probability, structure and energy loss was developed. Finally, based on IEEE-118 system, comparison between traditional hidden failure model and the proposed hidden failure model showed that the proposed model is more realistic and its assessment result is more reliable.关键词
隐性故障模型/继电保护系统/连锁故障/风险评估/置信规则库Key words
hiddenfailure model/protectiverelay system/cascadingfailure/risk assessment/confidence rule base分类
信息技术与安全科学引用本文复制引用
薛士敏,孙文鹏,高峰,李永丽,李仲青..基于精确隐性故障模型的输电系统连锁故障风险评估[J].电网技术,2016,40(4):1012-1017,6.基金项目
国家高技术研究发展计划(863计划)项目(2015AA050102)；国家自然科学基金资助项目(51577129，51207103)；国家电网公司大电网重大专项资助项目(SGCC-MPLG028-2012)；天津市自然科学基金资助项目(14JCYBJC21000)。Project Supported byNationalHighTechnologyResearchand Development of China (863Program)(2015AA050102), and National Natural Science Foundation of China(51577129，51207103) （863计划）
