|
|
|
| Analysis and Treatment of Online Monitoring of a Defect in 500kV Transformer |
| Yang Chao |
| Guiyang Power Supply Bureau, Guiyang 550002 |
|
|
|
|
Abstract The analysis and treatment of online monitoring of a defect in 500kV transformer has been introduced in this paper. After the discovery of excessive hydrocarbon of transformer oil through the chromatography online monitoring device, overheat fault of transformer was figured out combined with offline oil test data, and emergency response measures were took. It was found after blackout HV test that non-excited tap changer had a bad connection. This problem caused the overheat of contact and excessive hydrocarbon. The workers dealt with the defect timely, and solved the fault in the early. Then a serious equipment accident has been avoided.
|
|
Published: 05 November 2014
|
|
|
|
[1] GB/T 7252—2001 变压器油中溶解气体分析和判断导则[S].
[2] 陈化钢. 电力试验预防性试验方法及诊断技术[M]. 北京：中国科学技术出版社, 2001.
[3] 徐明涛,杨清华. 典型变压器直流电阻缺陷的分析与诊断[J]. 高电压技术, 2008, 34(2): 419-421.
[4] 董其国. 电力变压器故障与诊断[M]. 北京：中国电力出版社, 2001. |
|
|
|
2014, Vol. 15 
