中国电机工程学报Issue(9)：2342-2350,9.DOI:10.13334/j.0258-8013.pcsee.2015.09.030
微H2O对过热故障下SF6分解特性的影响及校正
Influence and Correction of Trace H2O on SF6 Decomposition Characteristic Under Partial Over-thermal Fault
摘要
Abstract
ABSTRACT:Since trace H2O can directly affect SF6 decomposition characteristic under overheating fault, it is important to study trace H2O which has the significant effect on diagnosis results in-depth and master its influence regularity, so as to correct the diagnosis results accurately and establish perfect SF6 overheating decomposition database when the gas analysis method is used to determine the severity and development trend of overheating fault in SF6 electrical equipment. In this paper, the local high temperature was simulated to make SF6 decompose on the designed SF6 thermal decomposition experimental system. Gas chromatograph and chromatography-mass spectrometry were used to measure the SF6 overheating decomposed components under different H2O concentrations quantitatively, so as to obtain the influence characteristics and regularities of trace H2O on characteristic components and characteristic ratios and determine the correction methods eventually. Results show that H2O has significant effect on the effective gas rate of SF6 thermal decomposition components, and the influence regularities are not identical. However, both the effective gas rate of each characteristic component and the characteristic ratio c(SOF4+SO2F2)/c(SOF2+SO2) have a good relationship with H2O concentration, thus they can be used as the characteristics of overheating fault diagnosis through the relevant correction.关键词
SF6/局部过热性故障/过热分解/微量水分/产气速率/特征比值Key words
SF6/partial over-thermal fault/over-thermal decomposition/trace H2O/formation rate/characteristic ratio分类
信息技术与安全科学引用本文复制引用
唐炬,曾福平,孙慧娟,姚强,侯兴哲..微H2O对过热故障下SF6分解特性的影响及校正[J].中国电机工程学报,2015,(9):2342-2350,9.基金项目
国家重点基础研究发展计划项目(973项目)(2009CB724506)；国家自然科学基金项目(51177181)；中央高校基本科研业务费专项资金(CDJXS12150001)。 The National Basic Research Program of China(973 Program)(2009CB724506) （973项目）
Project Supported by the National Natural Science Foundation of China(51177181) （51177181）
Fundamental Research Funds for the Central Universities (CDJXS12150001) （CDJXS12150001）
