An operating procedure for the detection, identification, and location of partial discharge in cast-resin dry-type transformers

Chien Yi Chen, Ching Chau Su, Jia Bin Wang, Cheng Chi Tai, Jiann Fuh Chen, Shih Shong Yen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The detection and location of partial discharge (PD) in cast-resin dry-type transformers using the acoustic emission (AE) method is very difficult: the sound in filled epoxy is highly attenuated and is easily interfered with external sound sources. In addition, there is no operating procedure for the detection, identification and location of PD in cast-resin dry-type transformers up to present. In this paper, we used a waveguide and a specially designed AE-sensor pair to overcome the shortcomings of the AE method. Test results indicate that the two techniques used not only greatly improve the sensitivity but also increase the reliability of the AE measurement system. In a practical case using the proposed techniques, the winding with PD was found in a high-voltage transformer, and further analysis was carried out to restrict the scope of PD to two points which are bilaterally symmetrical about the waveguide. An operating procedure for detection, identification and localization of PD is developed based upon the techniques described.

Original languageEnglish
Title of host publication2011 7th Asia-Pacific International Conference on Lightning, APL2011
Pages581-585
Number of pages5
DOIs
Publication statusPublished - 2011 Dec 1
Event2011 7th Asia-Pacific International Conference on Lightning, APL2011 - Chengdu, China
Duration: 2011 Nov 12011 Nov 4

Publication series

Name2011 7th Asia-Pacific International Conference on Lightning, APL2011

Other

Other2011 7th Asia-Pacific International Conference on Lightning, APL2011
CountryChina
CityChengdu
Period11-11-0111-11-04

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry

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    Chen, C. Y., Su, C. C., Wang, J. B., Tai, C. C., Chen, J. F., & Yen, S. S. (2011). An operating procedure for the detection, identification, and location of partial discharge in cast-resin dry-type transformers. In 2011 7th Asia-Pacific International Conference on Lightning, APL2011 (pp. 581-585). [6110193] (2011 7th Asia-Pacific International Conference on Lightning, APL2011). https://doi.org/10.1109/APL.2011.6110193