中国电力2011，Vol.44Issue(5)：34-37,64,5.
500kV断路器均压电容器介质损耗超标分析
Studies on hyper-scaling dielectric loss of grading capacitors of 500 kV breakers
何杰 1陈昱同 1吕永红 1王四保 1陈山中 1郭建宏 1吴怀玉 1李红喜 1吴斌 1宋晓琳1
作者信息
- 1. 山西省电力公司,长治供电分公司,山西,长治,046011
- 折叠
摘要
Abstract
To solve the problem of hyper-scaling dielectric loss of grading capacitors for 500 kV high voltage substation breakers under the test voltage of 10 kV, characteristics of the capacitors were analyzed and dielectric loss tests under a higher voltage more than 10 kV were conducted in a laboratory. The experimental data shows that the Garton effect existed in the capacitors is the cause for the problem. In addition to the high voltage and magnetic field interferences, a test with a normal voltage of 10 kV much lower than the rated voltage cannot reflect the real insulation condition of the capacitors. However, by raising test voltage or conducting the test under rated voltage, the influence of Garton effect can be eliminated, and the real insulation condition of capacitors in the normal working environment can be surveyed. This method may provide references for field tests and analyses of grading capacitors of 500 kV breakers.关键词
均压电容器/介质损耗/Garton效应/绝缘状况分类
信息技术与安全科学引用本文复制引用
何杰,陈昱同,吕永红,王四保,陈山中,郭建宏,吴怀玉,李红喜,吴斌,宋晓琳..500kV断路器均压电容器介质损耗超标分析[J].中国电力,2011,44(5):34-37,64,5.
