Estimation of time difference between partial discharge UHF signals using differential energy method

  • Ming Xiao Zhu
  • , Jian Yi Xue
  • , Jia Ning Zhang
  • , Jun Bo Deng
  • , Hai Bao Mu
  • , Guan Jun Zhang
  • , An Xiang Guo
  • , Xiao Wei Liu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Partial discharge (PD) site in high voltage power equipment can be located by solving the time difference equations. Estimating the time difference between PD signals with high accuracy is of great importance for accurate locating. This paper presents a time difference determining algorithm using cumulative energy function and differential energy method. The differential energy characterize the increase of cumulative energy, and the first significant peak of the differential energy is recognized as the arrival time. After that, a Monte Carlo statistics procedure is adopted to analyze the influence of noise level on the accuracy of time difference. The proposed estimation algorithm is examined with UHF signals acquired from four antennas in laboratory. The results indicate that the algorithm is effective to determine the time difference between UHF signals.

Original languageEnglish
Title of host publicationProceedings of the 2015 IEEE PES Asia-Pacific Power and Energy Engineering Conference, APPEEC 2015
PublisherIEEE Computer Society
ISBN (Electronic)9781467381321
DOIs
StatePublished - 12 Jan 2016
EventIEEE PES Asia-Pacific Power and Energy Engineering Conference, APPEEC 2015 - Brisbane, Australia
Duration: 15 Nov 201518 Nov 2015

Publication series

NameAsia-Pacific Power and Energy Engineering Conference, APPEEC
Volume2016-January
ISSN (Print)2157-4839
ISSN (Electronic)2157-4847

Conference

ConferenceIEEE PES Asia-Pacific Power and Energy Engineering Conference, APPEEC 2015
Country/TerritoryAustralia
CityBrisbane
Period15/11/1518/11/15

Keywords

  • differential energy
  • location
  • Partial discharge
  • time difference
  • UHF method

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