전력케이블 접속재 XLPE/EPDM 계면의 부분방전 특성 = Partial Discharge Characteristics of the XLPE/EPDM Interface in Power Cable Joint

다국어 초록 (Multilingual Abstract)

This paper describes the influence on partial discharge characteristics of defects at the model XLPE/EPDM interfaces of power cable joints. The defects of void and copper which could inadvertently be present at the joint interface. We measured ${\Phi}-n,\;{\Phi}-q$ patterns by a computer-aided partial discharge measuring system. Several parameters i, e, maximum discharge $q_{max}$ [pC], average discharge q [pC/cycle], and average angle of discharge ${\Theta}g$ [deg] were found to depend upon the defect type varying applied voltage. As the result of time evaluation, partial discharges are small different at copper defects, but is decreasing obviously about 20 minutes at void defect. It considered that difference of magnitude of total positive discharge of Q+ [pC] and total negative discharge of Q- [pC] is SPMD(swarming pulsive micro discharges).

참고문헌 (Reference)

1 유근양, "지중 케이블 접속재 시공" 18 (18): 40-, 2001

2 Ehara, Y., "“Effects of humidity on the degradation of insulating materials exposed to partial discharge”, Electrical Insulation and Dielectric Phenomena" IEEE 538-, 1994

3 B. Yazici, "Statistical pattern analysis of partial discharge measurements for quality assessment of insulation systems in high- voltage electrical machinery" 40 (40): 1579-, 2004

4 Tokunaga, S., "Partial discharge characteristics till, breakdown for XLPE cable joint with an artificial defect" 1206-, 2003

5 Uchida K., "Partial discharge and breakdown characteristics of various defects in XLPE cable joint" 115-B (115-B): 1185-, 1995

6 F. H. Kreuger, "Partial Discharge Detection in High-Voltage Equipment" Butterworths 52-, 1989

7 Kawakami, H., "Influence of swarming pulsive micro discharge on tree degradation" 979-, 2002

8 Nadolny, Z., "Effect of Mechanical Pressure and Silicone Grease on Partial Discharge Characteristics for Model XLPE Transmission Cable Joint" 297-, 1999

9 Wolter, K. D., "A study of the gaseous degradation products of corona exposed polyethylene" 17 (17): 248-, 1982

10 Cavallini, A., "A new approach to the diagnosis of solid insulation systems based on PD signal inference" 19 (19): 23-, 2003