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Partial Discharge Characteristics and Localization of Void Defects in XLPE Cable

XLPE 케이블에서 보이드 결함의 부분방전 특성과 위치추정

  • Park, Seo-Jun (Department of Electrical and Electronics Engineering, Korea Maritime and Ocean University) ;
  • Hwang, Seong-Cheol (Department of Electrical and Electronics Engineering, Korea Maritime and Ocean University) ;
  • Wang, Guoming (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)
  • Received : 2017.01.18
  • Accepted : 2017.03.29
  • Published : 2017.04.30

Abstract

Research on condition monitoring and diagnosis of power facilities has been conducted to improve the safety and reliability of electric power supply. Although insulation diagnostic techniques for unit equipment such as gas-insulated switchgears and transformers have been developed rapidly, studies on monitoring of cables have only included aspects such as whether defects exist and partial discharge (PD) detection; other characteristics and features have not been discussed. Therefore, this paper dealt with PD characteristics against void sizes and positions, and with defect localization in XLPE cable. Four types of defects with different sizes and positions were simulated and PD pulses were detected using a high frequency current transformer (HFCT) with a frequency range of 150kHz~30MHz. The results showed that the apparent charge increased when the defect was adjacent to the conductor; the pulse count in the negative half of the applied voltage was about 20% higher than that in the positive half. In addition, the defect location was calculated by time-domain reflectometry (TDR) method, it was revealed that the defect could be localized with an error of less than1m in a 50m cable.

References

  1. E. Peschke, R. von Olshausen (1999) Cable Systems for High and Extra-High Voltage, Pirelli, Berlin, pp. 24-26.
  2. M.S. Naidu, V. Kamaraju (1995) HighVoltage Engineering, McGraw-Hill, USA, pp. 333-337.
  3. D.W. Park, C.Y. Park, J.S. Choi, G.S. Kil, et al. (2009) Evaluation on insulation performance of traction motors for a hybrid vehicle by partial discharge measurement, Journal of the Korean Society for Railway, 12(2), pp. 249-253.
  4. C.F.F.C. Cunha, A.T. Carvalho, M.R. Petraglia, A.C.S. Lima (2015) A new wavelet selection method for partial discharge denoising, Electric Power Systems Research, 125, pp.184-195. https://doi.org/10.1016/j.epsr.2015.04.005
  5. H.A. Illias, M.A. Tunio, A.H. A. Bakar, H. Mokhlis, et al. (2016) Partial discharge phenomena within an artificial void in cable insulation geometry: experimental validation and simulation, IEEE Transactions on Dielectrics and Electrical Insulation, 23(1), pp.451- 459. https://doi.org/10.1109/TDEI.2015.005155
  6. International Electrotechnical Commission (2006) High-Voltage Test Techniques - Partial Discharge Measurements, IEC 60270.
  7. N.H. Malik, A.A. Al-Arainy, M.I. Qureshi (1998) Electrical Insulation in Power System, Marcel Dekker, New York, pp. 21-186.
  8. G.M. Wang, H.E. Jo, S.J. Kim, S.W. Kim, G.S. Kil (2016) Measurement and analysis of partial discharges in SF6 gas under HVDC, Measurement, 91, pp.351-359. https://doi.org/10.1016/j.measurement.2016.05.033
  9. A. Rodrigo Mor, P.H.F. Morshuis, P. Llovera, V. Fuster, et al. (2016) Localization techniques of partial discharges at cable ends in offline single-sided partial discharge cable measurements, IEEE Transactions on Dielectrics and Electrical Insulation, 23(1), pp. 428-434. https://doi.org/10.1109/TDEI.2015.005395
  10. F. Puletti, M. Olivieri, A. Cavallini, G. C. Montanari (2005) Localization of partial discharge sources along HV and MV cable routes, International Power Engineering Conference, Singapore, pp.1-6.