电力系统保护与控制2012，Vol.40Issue(8)：1-9,9.
变电站故障诊断的时间不确定性问题研究
Research on temporal uncertainty of substation fault diagnosis
摘要
Abstract
According to temporal uncertainty of substation fault diagnosis, a fuzzy Petri nets with temporal membership(TM-FPN) is proposed to construct the fault diagnosis model of substation. Fuzzy timestamp and weighted mathematical expectation are used to calculate temporal distribution of fault signals. Then, a kind of weighted variance is applied to analyze the discrete degree of signal groups. The next is that calculating the temporal membership of the lowest discrete degree group. Finally, this paper adopts weighted fuzzy reasoning to carry out fault diagnosis. The simulation experiment indicates that TM-FPN can effectively deal with temporal uncertainty of substation fault diagnosis, and can be used to analyze quantitatively the influence of temporal distribution, temporal interval and repeated signals on fault diagnosis results.关键词
变电站/故障诊断/Petri网/时间不确定性/时间隶属度Key words
substation/ fault diagnosis/ Petri net/ temporal uncertainty/ temporal membership分类
信息技术与安全科学引用本文复制引用
佘维,郭金叶,李江林,姬波,叶阳东..变电站故障诊断的时间不确定性问题研究[J].电力系统保护与控制,2012,40(8):1-9,9.基金项目
国家自然科学基金(60773048) （60773048）
国家重点实验室开放课题基金(RCS2009K003) （RCS2009K003）
湖南省教育厅科学研究课题(09C1257) （09C1257）
