电工技术学报2012，Vol.27Issue(10)：13-19,7.
局部放电下微水对SF_6分解组分的形成及其影响规律
Formation Mechanism and Influence Rules of Trace Levels H_2O on SF-6 Characteristic Decomposition Components Under Partial Discharge
摘要
Abstract
Among the influence factors of SF6 decomposition under partial(PD) discharge,H2O is the most significant one which affects its decomposed components,component concentration as well as the rate of gas generating.However,the influence regularity and the mechanism are still unclear recently.In this paper,SF6 decomposition testing apparatus is exploited and the experiment to simulate the influence of different H2O on the SF6 decomposition under PD is conducted in 48 hours.Gas chromatograph technology is used to detecting the content of the decomposed components and the influence regularity of H2O on SF6 characteristic decomposed components under PD is finally obtained.The study indicates that the increase of the H2O content will inhibit the generation of CF4 and CO2 while CO2 concentration is higher than CF4;H2O will promote both the generation of SO2F2 and SOF2 firstly and inhibit them afterwards,yet the promoting effect and inhibition effect on SOF2 is much stronger than SOF2.Besides,when H2O content is in low condition,the concentration ratio of SO2F2 and SOF2((SO2F2)/(SOF2))will gradually decrease along with the increasing time of partial discharge;when H2O is relative high,the concentration ratio will gradually increase instead.Thus,H2O must be taken into consideration while using characteristic decomposed components of SF6 to diagnose electrical equipment fault.关键词
局部放电/六氟化硫/组分分析/水分/分解组分Key words
Partial discharge/SF6/composition analysis/H2O/decomposed components分类
信息技术与安全科学引用本文复制引用
唐炬,裘吟君,曾福平,袁静帆,张晓星..局部放电下微水对SF_6分解组分的形成及其影响规律[J].电工技术学报,2012,27(10):13-19,7.基金项目
国家重点基础研究发展计划（973计划） （）
优秀博士论文基金（200749）资助项目 （）
