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A Case Study of Harmonic Resonance & Black Start in Weak Feed Power System
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 Title & Authors
A Case Study of Harmonic Resonance & Black Start in Weak Feed Power System
Park, Young-Chul; Lee, Eun-Seob; Son, Hyo-Soo; Lee, Seok-Hyun;
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 Abstract
In order to recover the power system during the wide power outage or power failure in the power plant, black start system should be properly operated without any problem. Especially power for black start in the geographically isolated areas of electric island is supplied from small emergency start-up generator, and loads are aux systems of gas turbines such as SFC(Static frequency converter). This paper introduces the international practices to overcome the voltage drop problem with harmonics of the system having the DC output such as SFC during black start in weak feed system and analyzes the relationship between house load inputs and harmonics. By varying the house load and input of power supply, this paper identified boundaries between weak feed and strong feed power. In order to verify the theory of stable condition in weak feed power system with DC output, house load is simulated using ETAP. Additionally MATLAB was used for harmonic analysis between the load inertia moment and non load inertia moment.
 Keywords
Weak feed power;Black start;Inertia moment;House load;Harmonic resonance;THD;
 Language
Korean
 Cited by
 References
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