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http://dx.doi.org/10.18770/KEPCO.2020.06.04.393

Electromagnetic Transient Program Modeling for Analysis of Switching Over-Voltage on Shunt Reactor  

Oh, SeungRyle (KEPCO Research Institute, Korea Electric Power Corporation)
Jun, InYoung (KEPCO Research Institute, Korea Electric Power Corporation)
Han, KiSun (KEPCO Research Institute, Korea Electric Power Corporation)
Kang, JiWon (KEPCO Research Institute, Korea Electric Power Corporation)
Publication Information
KEPCO Journal on Electric Power and Energy / v.6, no.4, 2020 , pp. 393-397 More about this Journal
Abstract
Shunt reactor, a facility for reactive power compensation, is switched several times a day depending on the load pattern. When the circuitbreaker opens the shunt reactor over-voltage is generated by several factors which degrade the insulating performance of internal parts of the circuit-breaker and cause severe voltage stress on the equipment in the power system. Transient phenomenon occurring during the switching of shunt reactor are available in laboratories that verify the performance of the circuit-breaker by simulating the power system. However, it is difficult to measure the transient phenomenon that occurs during actual operation in actual power system due to many limitations. Therefore, this paper deals with the modeling using EMTP to analyze the reignition and current chopping which causes more severe transient recovery voltage in the small inductive current breaking in actual power systems. In addition, this paper analyzes the main phenomenon that cause circuit-breaker failure in opening shunt reactor using EMTP model.
Keywords
Shunt Reactor; Reignition; Current Chopping; EMTP;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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