Characterizing impedance profiles for leakage currents from HV insulators on wooden poles

Sokolowski, P and Yu, X 2016, 'Characterizing impedance profiles for leakage currents from HV insulators on wooden poles', IEEE Transactions on Dielectrics and Electrical Insulation, vol. 23, no. 3, 7534611, pp. 1338-1346.


Document type: Journal Article
Collection: Journal Articles

Title Characterizing impedance profiles for leakage currents from HV insulators on wooden poles
Author(s) Sokolowski, P
Yu, X
Year 2016
Journal name IEEE Transactions on Dielectrics and Electrical Insulation
Volume number 23
Issue number 3
Article Number 7534611
Start page 1338
End page 1346
Total pages 9
Publisher IEEE
Abstract In this paper, the impedance characteristic profiles of wooden power poles altering the leakage current from high voltage (HV) insulators are investigated to better understand the role of wood in leakage current signatures. A comparison with past research shows the capacitive components of a pole's impedance have previously been ignored, however, has little effect on using an impedance value for effective resistance. Examining the impedance properties of typical Copper Chromium Arsenate (CCA) impregnated wood for 66 kV distribution poles shows dangerous conductance properties of wood at this voltage, providing an explanation for these poles catching fire at triple the rate of 22 kV distribution poles. After a systematic investigation of wood used for poles, a preliminary impedance characteristic of wooden poles in Victoria, Australia is established for the first time, where the pole is weathered, CCA impregnated and operating at 22 kV under both dry and wet weather conditions.
Subject Electrical and Electronic Engineering not elsewhere classified
Keyword(s) Failure analysis
Fires
Impedance measurement
Insulation
Leakage currents
Poles and towers
Resistance
Surface treatment
DOI - identifier 10.1109/TDEI.2015.005578
Copyright notice © 2016 IEEE.
ISSN 1070-9878
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