有载调压开关的故障分析
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摘要
对220kV某变电站2号主变压器有载调压开关动作特性试验中出现的分接开关切换示波波形正常,但A相单数组连接的过渡电阻偏大现象进行了分析。并结合现场实际检查结果论证,总结出有载调压开关切换波形连贯时,不代表该试验合格。还应确定同类电阻阻值无较大差距,两者结合才能最终确认该设备能否投运。
In the action characteristic test of on-load voltage regulating switch of No.2 main transformer in a 220 kV substation that the switching oscillographic waveform of tap changer is normal, but the transition resistance connected by single array of phase A is lager is analyzed. And combined with the actual inspection results of the site to demonstrate.It is concluded that when the switching waveform of the regulating switch is consistent, it does not mean that the test is qualified, and that the resistance value of the same kind of resistance does not exist a big difference. Only when both of them are up to standard can the equipment be finally confirmed to be in operation.
In the action characteristic test of on-load voltage regulating switch of No.2 main transformer in a 220 kV substation that the switching oscillographic waveform of tap changer is normal, but the transition resistance connected by single array of phase A is lager is analyzed. And combined with the actual inspection results of the site to demonstrate.It is concluded that when the switching waveform of the regulating switch is consistent, it does not mean that the test is qualified, and that the resistance value of the same kind of resistance does not exist a big difference. Only when both of them are up to standard can the equipment be finally confirmed to be in operation.
引文
[1]束龙,谢齐家,周凯,张致,孙光宝.1000 kV避雷器诊断性试验分析[J].湖北电力,2018,42(02):1-4.
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[8]姚海明,马宏忠,袁小军.基于DSP的变压器有载分接开关故障诊断的研究与设计[J].科技信息(学术研究),2007(28):13-14.
[2]洪祥,马宏忠,高鹏,陈楷,王春宁.基于EEMD的有载分接开关触头松动故障诊断[J].华电技术,2012,34(01):12-15+76.
[3]张惠峰,马宏忠,陈凯,王春宁,高鹏.基于振动信号EMD-HT时频分析的变压器有载分接开关故障诊断[J].高压电器,2012,48(01):76-81.
[4]SIMAS E F,ALMEIDA L A L,LIMA A C.Vibration monitoring of onload tap changers using a genetic algorithm.Proceedings of 2005 IEEE Instrumentation and measurement Technology Conference[C].Ottawa,Canada:IEEE,2005:2288-2293.
[5]方跃航.变压器有载分接开关故障诊断原因浅析[J].变压器,2011,48(6):62-65.
[6]RIVAS E,BURGOS J C,GARCIA-PRADA JC.Condition Assessment of power OLTCby vibration analysis using wave-let transform[J].IEEE Transactions on Power Delivery,2009,24(2):687-694.
[7]赵伟松.有载调压变压器分接开关故障诊断[J].云南电力技术,2012,40(04):31-35.
[8]姚海明,马宏忠,袁小军.基于DSP的变压器有载分接开关故障诊断的研究与设计[J].科技信息(学术研究),2007(28):13-14.