Title :
Transient Electromagnetic Phenomena in the Secondary Circuits of Voltage and Current Transformers in GIS (Measurements and Calculations)
Author :
Miri, A. M. ; Stojkovic, Zeljko
Author_Institution :
University of Karlsruhe, Karlsruhe, Germany; University of Belgrade, Belgrade, Yugoslavia
fDate :
7/1/2001 12:00:00 AM
Abstract :
This paper presents numerical and experimental evaluations of the transient behavior of gas insulated substations (GIS). The electrical equivalent circuits chosen to represent the main components of GIS are implemented in the electro-magnetic transients program (EMTP). The effect of mutual couplings between phases are included in the model, which is important for analyzing a modem GIS, containing three phases in one encapsulation. With the help of this model the generation and propagation of transients inside GIS have been evaluated with regard to transient overvoltages in the secondary circuits of voltage and current transformers. The established model results have been successfully verified experimentally for a 123 kV GIS.
Keywords :
Current measurement; Current transformers; EMTP; Electromagnetic measurements; Electromagnetic transients; Equivalent circuits; Gas insulation; Geographic Information Systems; Power transformer insulation; Substations; Gas insulated substations; electromagnetic transient analysis; measurement; voltage and current transformers;
Journal_Title :
Power Engineering Review, IEEE
DOI :
10.1109/MPER.2001.4311477
