NDLI: Flashover performance of EHV station post insulators covered with ice

Content Provider	IEEE Xplore Digital Library
Author	Farzaneh, M. Farzaneh-Dehkordi, J. Zhang, J.
Copyright Year	2004
Description	Author affiliation: Quebec Univ., Chicoutimi, Que., Canada (Farzaneh, M.; Farzaneh-Dehkordi, J.; Zhang, J.)
Abstract	The icing performance of standard-shed-design porcelain insulators, with a dry arcing distance of up to 4.17 m, corresponding to full-scale Hydro-Quebec 735 kV substation insulators, was investigated. Artificial ice was formed at -12/spl deg/C in a climate room from supercooled water droplets produced by a set of pneumatic nozzles. The relationship between the maximum withstand voltage, V/sub WS/, and insulator length was determined. With an applied water conductivity of 30 /spl mu/S/cm and an ice thickness of 15 mm, measured on a rotating monitoring cylinder, flashover may occur at service voltage. Moreover, the V/sub WS/ of the ice-covered insulators tested increases non-linearly with an increase in insulator length. These results are of great importance for the design of EHV substation insulators used in cold climate regions.
Starting Page	37
Ending Page	40
File Size	313261
Page Count	4
File Format	PDF
ISBN	0780385845
DOI	10.1109/CEIDP.2004.1364183
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-10-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Flashover Insulation Substations Voltage Porcelain Ice thickness Conductivity measurement Rotation measurement Thickness measurement Monitoring
Content Type	Text
Resource Type	Article

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Modeling of Flashover on Ice-Covered Insulators with Multi Air Gaps

Effect of electrical test methods on dc flashover performance of ice-covered ceramic insulators

Electrical performance evaluation of EHV post insulators covered with ice under different air gap configurations

Dynamic modeling of AC multiple ARCS of EHV post station insulators covered with ice

Characterization of leakage current of a post station insulator covered with ice with various surface conductivities

Leakage Current and Flashover Performance of Iced Insulators

A simple method to assess ice built-up severity in EHV substations

AC flashover performance of polluted insulators covered with artificial ice at low atmospheric pressure

A review of AC/DC flashover characteristics of contaminated insulators covered with artificial ice

Flashover performance of EHV station post insulators covered with ice

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