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| The Case on the Application of the Ultrasonic Method in the Internal Defect Detection of Tank-type Circuit Breakers |
| Tian Lin, Diao Yanping, Wang Jianwei, Wei Haijun, Sun Weimin |
| Jibei Maintenance Branch Company, Beijing 102488 |
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Abstract Based on the general principle of ultrasonic detection of partial discharge (PD), the basic characteristics of defects, such as corona discharge, suspended discharge and free metal particles are analyzed. The ultrasonic PD tests on the 500kV tank-type circuit breakers in the substations under the jurisdiction of one maintenance company show that the PD ultrasound signal of the 5031 A phase breaker in Jiangjia camp substation exceeds the standard seriously, and 100Hz relevance is obvious. Gas component analysis shows normal. The breaker internal shield is determined to appear loose or floating potential initially. After the disintegration of the circuit breaker, bolts were found loose. Then the thread locking agent was used and the PD ultrasonic signal is back to normal.
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Published: 09 December 2015
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Tian Lin,Diao Yanping,Wang Jianwei等. The Case on the Application of the Ultrasonic Method in the Internal Defect Detection of Tank-type Circuit Breakers[J]. Electrical Engineering, 2015, 16(12): 160-163.
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http://dqjs.cesmedia.cn/EN/Y2015/V16/I12/160
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[1] 王川波. 高压电气绝缘及测试[M]. 北京: 中国水利水电出版社, 1998.
[2] 戎琳. 局部放电超声信号仿真与评估技术研究[D]. 上海: 上海交通大学, 2011.
[3] 王伟, 冯新岩, 曲文韬, 等. 超声波法在GIS局部放电检测中的应用[J]. 电气技术, 2010(7): 38-41.
[4] T. Boczar, Identification of specific type of PD from acoustic emission frequency spectra, IEEE transactions on Dielectrics and Electrical Insulation[J]. 2001, 8(4): 598-606.
[5] 王永强, 张涛, 王慧君. 基于超高频和超声波的干式变压器局部放电检测与定位的研究[J]. 电测与仪表, 2013(10): 1-5.
[6] W. R. Rutgers and Y. H. Fu, UHF PD-Detection in a power transformer, Proceedings of 10th international symposium on high voltage engineering[J]. Montreal, August 219-222, 1997.
[7] 黎大健, 梁基重, 步科伟, 等. GIS中典型缺陷局部放电的超声波检测[J]. 高压电器, 2009, 45(1): 72-75. |
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2015, Vol. 16 
