Work

Section Locating of Water-tree Degraded Cable by Measuring Residual Charges Induced by Induced Voltage Pulses

Year: 2024

Type: article

Abstract: To establish a novel section locating technique for a water-tree degraded 22 kV cross-linked polyethylene (XLPE) cable that is included in another undegraded cables, we measured a reflected injection pulse at the impedance mismatch which is dependent on water trees. The injection pulse was propagated into cables to be measured, and the measured arrival times of reflected pulses containing residual charges due to water trees were varied depending on the locations of water-tree degraded cables. The section locating was achieved by using arrival time of the reflected pulse.

Source: IEEJ Transactions on Fundamentals and Materials

DOI: 10.1541/ieejfms.145.23

Authors: Koki Watanabe, Tatsuya Sakoda, Akira Takahashi, Naoyuki Negishi, Kazunori Miyazaki

Institutions: University of Miyazaki, TEPCO (Japan)

Language: English

Topic: High voltage insulation and dielectric phenomena

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: green

Funder: Japan Society for the Promotion of Science