一起有载切换开关故障引起的110 kV 变压器运行事故原因分析
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摘要
基于一起110 kV变压器的有载切换开关故障,对其进行油色谱分析、短路阻抗、绕组变形、绕组直流电阻和有载分接开关切换时间和动作顺序试验,结合吊罩检查,分析出了事故原因及过程,并且针对事故提出了预防性措施。
The switching process of on-load tap changer(OLTC) is introduced. The oil color spectrum analysis, short-circuit impedance, winding deformation, winding DC resistance and the switching time and action sequence of on-load tap changer are tested based on the fault of on-load tap changer of a 110 kV transformer. The cause and process of the accident are analyzed according to those test results combined with the inspection of hanging cover, and a new preventive detection method and new organizational measures are given for the accident.
The switching process of on-load tap changer(OLTC) is introduced. The oil color spectrum analysis, short-circuit impedance, winding deformation, winding DC resistance and the switching time and action sequence of on-load tap changer are tested based on the fault of on-load tap changer of a 110 kV transformer. The cause and process of the accident are analyzed according to those test results combined with the inspection of hanging cover, and a new preventive detection method and new organizational measures are given for the accident.
引文
[1] Wang C,Lu L,Ma H,et al.Diagnosis for Loose Switching Contact Fault of On-load Tap-changer in Transformer[C]// China International Conference on Electricity Distribution,IEEE,2010:1-6.
[2] Erbrink J,Gulski E,Smit J,et al.Experimental Model for Diagnosing On-load Tap Changer Contact Aging with Dynamic Resistance Measurements[C]// The International Conference and Exhibition on Electricity Distribution,IET,2009:1-17.
[3] 杜瑞红.变压器有载分接开关特性测试系统的研究[D].保定:华北电力大学,2007.
[4] 李建明,梁作德,李琪.一起由开关故障引起的变压器短路事故的分析计算[J].变压器,2016,53(12):72-75.
[5] 黄志明.110 kV变压器有载开关吊检研究[J].军民两用技术与产品,2016(8):140.
[6] 杨义军.主变压器有载分接开关故障原因分析及处理[J].变压器,2012,49(9):73-74.
[7] 赵敏,刘立,别长报,等.一起110 kV变压器有载分接开关放电故障分析与处理[J].变压器,2014,51(8):64-66.
[8] 国家电网公司.输变电设备状态检修试验规程:Q/GDW 168-2008[M].北京:中国电力出版社,2008.
[9] 杨军亭,彭鹏,温定筠,等.一起变压器有载分接开关事故分析[J].变压器,2016,53(2):64-66.
[10] Caccese V,Mewer R,Vel S S.Detection of Bolt Load Loss in Hybrid Composite/Metal Bolted Connections[J].Engineering Structures,2004,26(7):895-906.
[2] Erbrink J,Gulski E,Smit J,et al.Experimental Model for Diagnosing On-load Tap Changer Contact Aging with Dynamic Resistance Measurements[C]// The International Conference and Exhibition on Electricity Distribution,IET,2009:1-17.
[3] 杜瑞红.变压器有载分接开关特性测试系统的研究[D].保定:华北电力大学,2007.
[4] 李建明,梁作德,李琪.一起由开关故障引起的变压器短路事故的分析计算[J].变压器,2016,53(12):72-75.
[5] 黄志明.110 kV变压器有载开关吊检研究[J].军民两用技术与产品,2016(8):140.
[6] 杨义军.主变压器有载分接开关故障原因分析及处理[J].变压器,2012,49(9):73-74.
[7] 赵敏,刘立,别长报,等.一起110 kV变压器有载分接开关放电故障分析与处理[J].变压器,2014,51(8):64-66.
[8] 国家电网公司.输变电设备状态检修试验规程:Q/GDW 168-2008[M].北京:中国电力出版社,2008.
[9] 杨军亭,彭鹏,温定筠,等.一起变压器有载分接开关事故分析[J].变压器,2016,53(2):64-66.
[10] Caccese V,Mewer R,Vel S S.Detection of Bolt Load Loss in Hybrid Composite/Metal Bolted Connections[J].Engineering Structures,2004,26(7):895-906.