Journal ArticleDOI
Partial discharge factory test requirements and in-field partial discharge testing of medium voltage cables
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TLDR
In this paper, the authors present partial discharge testing of medium voltage cables and conclude that failure history of the cable, in conjunction with an analysis of the PD site, should be part of the utility engineer's decision-making process.Abstract:
This article presents partial discharge testing of medium voltage cables. Utility engineers are faced with decision on whether to replace some of the older cables in their underground distribution systems. Today, measurement of PD at voltages above 1 Vg on extruded cables more than fifteen years old may not indicate that the cables have developed PD due to in-service aging. Removal of these cables based solely on PD measurements may not be warranted. Failure history of the cable, in conjunction with an analysis of the PD site, should be part of the utility engineer's decision-making process.read more
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Journal ArticleDOI
A Novel Localization Method of Partial Discharge Sources in Substations Based on UHF Antenna and TSVD Regularization
TL;DR: A novel method based on the UHF antenna and the truncated singular value decomposition (TSVD) regularization method that can accurately locate the PD source is developed and verified by theoretical verification and field tests.
Proceedings ArticleDOI
A Novel Variable-frequency Resonant System for Partial Discharge Detection of XLPE Cables
TL;DR: In this paper, a variable-frequency resonant system using Equivalent Pulse Width Modulation, Time Domain Elimination and Time Domain Reflection (TDR) is presented for the withstand test as well as PD detection test.
Proceedings ArticleDOI
An Improved Variable-Frequency Series Resonant System for PD Detection of MV Power Cables Based on DAC Technology
TL;DR: In this paper, an improved variable-frequency series resonant (ACRF) system was proposed for partial discharge detection of medium voltage (MV) power cables, which is a combination of the ACRF system and the damped AC (DAC) system.
Journal ArticleDOI
On-Line Partial Discharge Detection on Transformer Cable Sealing Ends in Singapore's Transmission Network
TL;DR: In this paper , the authors present several unique practical case studies on successful partial discharge detection derived from transformer cable sealing ends in Singapore's transmission network, which are valuable for field condition monitoring engineers.
Book ChapterDOI
Neural Network Model for Evaluating Thermofluctuation Processes in Cable Systems Using a Multi-stage Forecasting Method
TL;DR: In this article, a neural network was developed to assess the throughput, calculate and forecast the core temperature of a power cable line (PCL) in real-time based on data from a temperature monitoring system, and taking into account changes in the current load of the line.