中国电力2018，Vol.51Issue(4)：61-66,6.DOI:10.11930/j.issn.1004-9649.201611028
非运行状态电容式电压互感器绝缘体系生物降解分析
Analysis of the Impact of Microbial Degradation on the Insulation System of the Offline Capacitive Voltage Transformer
王杰 1苏长华 1吴晓辉 2张力 1胡仕红 1兰新生1
作者信息
- 1. 国网四川省电力公司电力科学研究院,四川 成都 610023
- 2. 国网四川省电力公司,四川 成都 610023
- 折叠
摘要
Abstract
To improve the safety of the capacitor voltage transformer (CVT) operation, it is necessary to study why the amount of the gas contents such as CH4, H2and CO2in the oil-paper insulation system of the offline CVT increases . The microorganism growing experiment in the oil-paper insulation system of the CVT is conducted by using the methods of natural inoculation, artificial inoculation and high-temperature sterilization. The microbial degradation products and their amounts are determined with the gas chromatograph, the micro water detector and some other equipments. The microorganism species are identified with the molecular biological method, and the degradation characteristics of the insulation system are analyzed. The results show that the H2O , acids, CH4, H2, and CO2are produced during the microbial degradation in the oil-paper insulation system and the components are the same as those found in in the insulating oil of the offline CVT Also, an inflection point of decrease is observed in the gas component increasing process. Four spherical anaerobic microorganism species are detected by microscopic observation and biological identification. It is concluded that the bio-degradation of the oil-paper insulation system of the CVT has two stages, the multi-microbial degradation and anaerobic methane fermentation. The CH4, H2and CO2are the characteristic gas produced from the degradation.关键词
电容式电压互感器/绝缘油/绝缘纸/微生物/降解Key words
CVT/insulating oil/insulating paper/microorganisms/degradation分类
信息技术与安全科学引用本文复制引用
王杰,苏长华,吴晓辉,张力,胡仕红,兰新生..非运行状态电容式电压互感器绝缘体系生物降解分析[J].中国电力,2018,51(4):61-66,6.
