摘要
结合蒙西电网几起大型电力变压器绕组故障的诊断过程及方法,分析认为仅凭油中溶解气体色谱分析试验、直流电阻试验或绕组频率响应特性试验往往不能作出正确的故障判断,提出了应结合绕组电容量试验、低电压下空载试验或短路阻抗试验,并对试验结果进行综合分析,方可达到准确判断绕组状况的见解。
By means of analysis instances of power transformer malfunctions in west Inner Mongolia network, the author find that diagnosis of gases dissolved in transformer oil, D.C resistance test are frequency response analysis test are impossible to correctly appraise power transformer malfunctions. To correctly estimate the condition of windings, the author put forword to combine winding capacitance test, no-load test under low voltage or D.C resistance test, with comperhensive analysis of test results to achieve the aim.
出处
《内蒙古电力技术》
2012年第3期46-49,共4页
Inner Mongolia Electric Power
基金
内蒙古自治区高等学校科学研究项目(X200931)
关键词
电力变压器
绕组故障
绕组电容量试验
空载试验
短路阻抗试验
power transformers
winding fault
winding capacitance test
no-load test
short-circuit impedance test
