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http://dx.doi.org/10.5370/JEET.2013.8.1.011

Analysis of Magnitude and Rate-of-rise of VFTO in 550 kV GIS using EMTP-RV  

Seo, Hun-Chul (College of Information and Communication Engineering, Sungkyunkwan University)
Jang, Won-Hyeok (College of Information and Communication Engineering, Sungkyunkwan University)
Kim, Chul-Hwan (College of Information and Communication Engineering, Sungkyunkwan University)
Chung, Young-Hwan (Power & Industrial Systems PG, Hyosung Corporation)
Lee, Dong-Su (Power & Industrial Systems PG, Hyosung Corporation)
Rhee, Sang-Bong (Dept. of Electrical Engineering., Yeungnam University)
Publication Information
Journal of Electrical Engineering and Technology / v.8, no.1, 2013 , pp. 11-19 More about this Journal
Abstract
Very Fast Transients (VFT) originate mainly from disconnector switching operations in Gas Insulated Substations (GIS). In order to determine the rate-of-rise of Very Fast Transient Overvoltage (VFTO) in a 550 kV GIS, simulations are carried out using EMTP-RV. Each component of the GIS is modeled by distributed line model and lumped model based on equivalent circuits. The various switching conditions according to closing point-on-wave and trapped charge are simulated, and the results are analyzed. Also, the analysis of travelling wave using a lattice diagram is conducted to verify the simulation results.
Keywords
DS; EMTP-RV; Lattice diagram; Rate-of-rise; Travelling wave; Very fast transient overvoltage;
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