PD diagnosis on medium voltage cables with oscillating voltage (OWTS)

Frank Petzold, Mikhail Zakharov

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

5 Scopus citations

Abstract

Detecting, locating and evaluating of partial discharges (PD) in the insulating material, terminations and joints provides the opportunity for a quality control after installation and preventive detection of arising service interruption. A sophisticated evaluation is necessary between PD in several insulating materials and also in different types of terminations and joints. For a most precise evaluation of the degree and risk caused by PD it is suggested to use a test voltage shape that is preferably like the same under service conditions. Only under these requirements the typical PD parameters like inception and extinction voltage, PD level and PD pattern correspond to significant operational values. On the other hand the stress on the insulation should be limited during the diagnosis to not create irreversible damages and thereby worsening the condition of the test object. The paper introduces an Oscillating Wave Test System (OWTS), which meets these mentioned demands well. The design of the system, its functionality and especially the operating software are made for convenient field application. Field data and experience reports will be presented and discussed. This field data serve also as good guide for the level of danger to the different insulating systems due to partial discharges.

Original languageEnglish
Title of host publication2005 IEEE Russia Power Tech, PowerTech
DOIs
StatePublished - 2005
Externally publishedYes
Event2005 IEEE Russia Power Tech, PowerTech - St. Petersburg, Russian Federation
Duration: 27 Jun 200530 Jun 2005

Publication series

Name2005 IEEE Russia Power Tech, PowerTech

Conference

Conference2005 IEEE Russia Power Tech, PowerTech
Country/TerritoryRussian Federation
CitySt. Petersburg
Period27/06/0530/06/05

Keywords

  • Aged cables
  • Oscillating voltage
  • PD extinction voltage
  • PD faults
  • PD inception voltag
  • PD pattern
  • PD-mapping
  • Partial discharge (PD) measurement

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