JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2012, Vol. 42 ›› Issue (4): 126-131.

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On-line partial discharge monitoring system for XLPE power cable


SUI Hui-bin1, LI Jing-qiang2, YANG Xiao-juan2, ZHANG Cun-ming2, XU Bin2, YAN Yan2, LIU Chang-zheng2, XU Wen2   

  1. 1. School of Electrical Engineering, Shandong University, Jinan 250061, China;
     2. Jining Power Supply Company, Jining 272100, China
  • Received:2012-02-13 Online:2012-08-20 Published:2012-02-13

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Abstract:

Partial discharge occurred in the cross-linked polyethylene (XLPE) power cable is a serious factor to the power supply reliability of cables and power system. Based on the measuring principle of the current transformer, a Rogowski coil based partial discharge monitoring system for XLPE power cable online monitoring system was proposed. The high frequency electromagnetic coupling sensor was studied, the parameters related to measurement sensitivity were identified, and the Rogowski coil parameters for XLPE power cable partial discharge was determined by experiment. The structure of partial discharge monitoring device and the on-line partial discharge monitoring system based on optical communication cable were designed in detail. The test was carried out on a certain operating cables in a substation. The monitoring data analysis showed the effectiveness of the proposed on-line partial discharge monitoring system for XLPE power cable.

Key words:  cross-linked polyethylene(XLPE) cable, cable joint, partial discharge, Rogowski coil, condition based maintenance

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