Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
권호 표지
DOI QR코드

DOI QR Code

Insulation Diagnosis of Gas-Insulated Switchgears by TEV Detection

TEV 검출에 의한 가스 절연 개폐기의 절연 진단

  • Kong, Jeong-Bae (Department of Electrical and Electronics Engineering, Korea Maritime and Ocean University) ;
  • Kil, Gyung-Suk (Department of Electrical and Electronics Engineering, Korea Maritime and Ocean University) ;
  • Kim, Sung-Wook (Power Asset Management Team, Hyosung Corporation)
  • 공정배 (한국해양대학교 전기전자공학과) ;
  • 길경석 (한국해양대학교 전기전자공학과) ;
  • 김성욱 ((주)효성 Power Asset Management팀)
  • Received : 2019.03.04
  • Accepted : 2019.04.01
  • Published : 2019.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

Transient earth voltage (TEV) signals propagate on metal surfaces when partial discharge (PD) occurs due to the deterioration of insulation performance in the operation of gas-insulated switchgears (GIS). A TEV sensor has advantages of high sensitivity and convenient installation for detecting PD defects. However, the TEV sensor depends on imports in domestic and detailed studies have not been conducted. In this study, a sensor was designed and fabricated by the TEV principle and its response characteristics were evaluated for detecting PD defects, which were simulated as protrusion on conductor (POC), protrusion on enclosure (POE), and free moving particle (FMP) defects. Finally, the PD-induced TEV signals were measured and phase-resolved partial discharge (PRPD) patterns were analyzed to identify the type of defect.

Keywords

JJJRCC_2019_v32n4_307_f0001.png 이미지

Fig. 1. TEV sensor.

JJJRCC_2019_v32n4_307_f0002.png 이미지

Fig. 2. Configuration of experimental setup for verifying the response characteristics.

JJJRCC_2019_v32n4_307_f0003.png 이미지

Fig. 3. Frequency spectrum of TEV sensor.

JJJRCC_2019_v32n4_307_f0004.png 이미지

Fig. 4. Result of response characteristics.

JJJRCC_2019_v32n4_307_f0005.png 이미지

Fig. 5. Configuration of experimental setup.

JJJRCC_2019_v32n4_307_f0006.png 이미지

Fig. 6. Electrode systems.

JJJRCC_2019_v32n4_307_f0007.png 이미지

Fig. 7. PD voltage pulse.

JJJRCC_2019_v32n4_307_f0008.png 이미지

Fig. 8. PD-induced TEV signal.

JJJRCC_2019_v32n4_307_f0009.png 이미지

Fig. 9. PRPD patterns.

References

  1. IEC Publication 60270, High-Voltage Test Techniques: Partial Discharge Measurements, 2010.
  2. CIGRE JWG 33/23/12, Insulation Co-Ordination of GIS: Return of Experience, on Site Tests and Diagnostic Techniques, Electra No. 176, 1998.
  3. S. M. Markalous, S. Tenbohlen, and K. Feser, IEEE Trans. Dielectr. Electr. Insul., 15, 1576 (2008). [DOI: https://doi.org/10.1109/TDEI.2008.4712660]
  4. G. Wang, H. E. Jo, S. J. Kim, S. W. Kim, and G. S. Kil, Measurement, 91, 351 (2016). [DOI: https://doi.org/10.1016/j.measurement.2016.05.033]
  5. B. H. Lee, S. H. Lee, and G. S. Kil, Proc. Conference of The Korean Institute of Electrical Engineers (KIEE, Seoul, Korea, 1994) p. 287.
  6. N. Davies, J.C.Y. Tang, and P. Shiel, Proc. 19th International Conference on Electricity Distribution (Elec. Dist., Vienna, Austria, 2007) p. 1.
  7. G. Wang, W. H. Kim, J. B. Kong, G. S. Kil, and H. K. Ji, Trans. Electr. Electron. Mater., 19, 195 (2018). [DOI:https://doi.org/10.1007/s42341-018-0037-5]