Research on Detection Method of Detection Sensors for 110 kV XLPE Cables

doi:10.3969/j.issn.1008-0198.2025.03.012

Abstract

Abstract: Aiming at the poor detection effect of traditional partial discharge (hereinafter referred to as PD) of high-voltage XLPE (cross-linked polyethylene) cables, an innovative built-in partial discharge(PD） signal detection device for high-voltage cables is proposed. By improving the structure of cable terminals and intermediate joints, a flange interface is reserved into the tailpipe area of these components for embedding a PD detection antenna, enabling accurate and effective detection of PD signals while avoiding damage to the cable body. With the detection antenna adopting a double-helix structure, precise collection, transmission, analysis, and processing of PD signals ar achieved. Through simulation and testing, the central frequency of the built-in PD detection antenna for 110 kV XLPE high-voltage cables with lengths ranging from 50 to 500 meters is determined to be 20 MHz. Test results demonstrate that the built-in PD detection sensor can effectively detect PD signals.

Key words: XLPE cable, partial discharge detection, antenna, frequency

CLC Number:

TM854

YU Ting, DUAN Xiaoli, LiU Sanwei, ZHONG Lipeng, Li Shaobin, WANG Feng. Research on Detection Method of Detection Sensors for 110 kV XLPE Cables[J]. Hunan Electric Power, 2025, 45(3): 84-88.

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