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JEET, Vol. 13, No. 1, January 2018
A Stable Black-Start Strategy for a Stand-Alone DC Micro-Grid
Jae-Eon Kim
Area A - Electric Power Engineering
Abstract Unlike an AC system, a DC system does not cause problems with synchronization, stability, reactive power, system losses, and cost. However, more research is still required for the application of DC Systems. This paper proposes a stable black-start strategy for a stand-alone DC micro-grid, which consists of an energy storage system, photovoltaic generator, wind-turbine generator, diesel generator, and DC loads. The proposed method is very important for avoiding inrush current and transient overvoltage in the power system equipment during restoration after a blackout. PSCAD/EMTDC software was used to simulate, analyze, and verify the method, which was found to be stable and applicable for a stand-alone DC micro-grid.
Keyword LVDC,DC Distribution,DC micro-grid,Blackout,Black-start,Restoration,PSCAD/ EMTDC
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