|
|
|
| Diagnosis and Treatment of Low Temperature OverHeat Fault in 35kV Station Transformer |
| Cheng Guanji |
| Guangzhou Bureau, CSG EHV Power Transmission Company, Guangzhou 510000 |
|
|
|
|
Abstract The total hydrocarbon content of a 35kV station transformer in Baoan Staion of Gui-Guang II HVDC is excessive. Through the oil chromatographic analysis, it is diagnosed as low temperature overheat fault. And then through hanging core examination method, this paper diagnose that the fault reason is more than one grounding points on the clamping piece and the grounding points on the clamping piece being unreliable. The improvement measures are presented to solve the problem of fault. Finally the fault is effectively solved. At the same time, this paper offers daily maintenance suggestions and preventive suggestions for the transformer, which the clamping piece of is not extended the lead of ground point from tank to grounding board located in the bottom.
|
|
Received: 18 August 2015
Published: 18 August 2015
|
|
|
|
| Cite this article: |
|
Cheng Guanji. Diagnosis and Treatment of Low Temperature OverHeat Fault in 35kV Station Transformer[J]. Electrical Engineering, 2015, 16(8): 60-64.
|
|
|
|
| URL: |
|
http://dqjs.cesmedia.cn/EN/Y2015/V16/I8/60
|
[1] 杨城. 变压器常见内部故障及处理[J]. 河北工程技 术高等专科学校学报, 2009(4): 45-46, 54.
[2] 庞海龙, 涂明涛, 刘鹏. 一起变压器突发过热故障的发现、查找及消除[C]. 上海: 2009年全国输变电设备状态检修技术交流研讨会论文集, 2009: 711-715.
[3] GB/T 7252—2001. 变压器油中溶解气体分析和判断导则[S]. 北京: 中国标准出版社, 2004.
[4] 黄晓春, 王天一. 变压器过热故障的原因及查找[J]. 变压器, 2011, 48(8): 66-69.
[5] 李明, 潭亚娟, 张帅. 变压器内部潜伏性故障的分析和判断实例[J]. 变压器, 2011, 48(2): 74-75.
[6] 陈晓林. 220kV变压器夹件多点接地故障的分析与处理[J]. 电气传动自动化, 2013, 35(1): 53-55.
[7] 王海涛, 万正喜. 500kV变压器铁芯夹件接地电流超标的分析与处理[J]. 中国电业（技术版）, 2013(2): 12-15.
[8] 张志奎, 刘强, 许岩峰. 一起220kV变压器夹件接地故障及处理[J]. 变压器, 2013, 50(10): 后插1-后插2.
[9] 熊前刚, 李开相, 霍凌. 一起500kV变压器夹件多点接地的分析处理[J]. 贵州水力发电, 2011, 25(5): 74-75, 81.
[10] 谢荣斌, 马文磊, 薛静, 等. 变电站变压器铁心多点接地故障分析与处理[J]. 南方电网技术, 2007, 1(1): 85-87.
[11] 杨新春, 周宝健, 张华强. 500kV主变压器两次夹件多点接地故障的分析处理[J]. 变压器, 2013, 50(7): 72-73.
[12] 吴冷, 毛宏智, 周建军. 色谱回归分析法在变压器过热故障诊断处理中的应用[J]. 高压电器, 2011, 47(9): 117-120. |
|
|
|
2015, Vol. 16 
