基于FTA法的变压器故障分析  

Transformer Faults Analysis Based on FTA

作　　者：杨淑英[1] 赵凯[1] 

机构地区：[1]华北电力大学电气工程学院,保定071003

出　　处：《电力系统及其自动化学报》2007年第3期96-99,共4页Proceedings of the CSU-EPSA

摘　　要：针对引起变压器故障的原因,采用FTA法,对大型电力变压器的各种故障进行分析,并对变压器各分系统的故障原因进行了统计计算。分析表明,变压器线圈的故障率和故障概率为最大,分接开关的故障率也较高。将FTA法应用于电力变压器可靠度分析,结果显示,变压器的工作可靠度可从0.6提高到0.9,平均无故障率时间可从25年提高到30年以上。研究结论可为大型电力变压器的设计、制造和检修提供理论依据。This paper adopts FTA method to analyze large-sized transformer faults and accomplishes the statistic on failure reasons of transoformer subsystems. Results show that the coil failure rate and its probability are maximal,and the tap switch failure rate also stays at a high level. Applying FTA method to reliability analysis of electric power transformer ,it is proved that transformer reliability can be improved from 0. 6 to 0. 9 and mean time to failure from 25 years to more than 30 years. The conclusion obtained provides a theoretical basis for the design ,production and repair of large-sized transformer.

关 键 词：变压器 故障分析 故障树 故障树分析 

分 类 号：TM411[电气工程—电器]