| 一起35kV变压器大修后试验分析与处理 |
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| 引用本文： | 丁常松,鲁华忠,周宏霞,方国芳,王辉.一起35kV变压器大修后试验分析与处理[J].安徽电力职工大学学报,2013(3):42-44. |
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| 作者姓名： | 丁常松 鲁华忠 周宏霞 方国芳 王辉 |
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| 作者单位： | [1]马鞍山供电公司,安徽马鞍山243000 [2]安徽省电力公司检修公司,安徽合肥230022 [3]寿县供电公司,安徽寿县232200 [4]霍山供电公司,安徽霍山237200 |
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| 摘 要： | 文章对一台35kV变压器进行大修后试验，在此过程中发现高压对低压及地绝缘电阻不合格。通过试验数据分析以及分解试验，最终确定是由高压绕组中性点引线触碰铁芯引线以及中性点套管瓷瓶的半导体层被破坏共同引起，打开变压器低压绕组检修手孔进行处理，避免了变压器本体吊罩检查。
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| 关 键 词： | 变压器 绝缘电阻 故障分析 处理 |
A Test Analysis and Processing for 35kV Transformer after Overhaul |
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| DING Chang-song,LU Hua-zhong,ZHOU Hong-xia,FANG Guo-fang,WANG Hui.A Test Analysis and Processing for 35kV Transformer after Overhaul[J].Journal of Anhui Electric Power College for Staff,2013(3):42-44. |
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| Authors: | DING Chang-song LU Hua-zhong ZHOU Hong-xia FANG Guo-fang WANG Hui |
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| Affiliation: | 1. Ma＇anshan Power Supply Company, Ma＇anshan 243000, China; 2. Maintenance Company of Anhui Electric Power Corporation, Hefei 230022, China; 3. Shouxian Power Supply Company, Shuoxian 232200, China; 4. Huoshan Power Supply Comoany. Huoshan 237200. China) |
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| Abstract: | This article is about a test of a 35kV transformer after major overhaul, and in this process it is found that the insulation resistance of high voltage to low voltage and ground is failure. Through experi- mental data analysis, and decomposition experiments, the cause is ultimately determined that the high voltage winding neutral point lead crosses the core leads and neutral bushing porcelain semiconductor lay- er is destroyed. Finally by opening the maintenance hand hole of the low voltage winding, the problem is solved, avoiding the transformer body hanging hood inspection. |
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| Keywords: | transformer insulation resistance failure analysis treatment |
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