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http://dx.doi.org/10.5370/JEET.2016.11.6.1600

A Fault Analysis on AC Microgrid with Distributed Generations  

Shin, Seong-Su (Electric Association)
Oh, Joon-Seok (School of Electrical Engineering, Chungbuk National Univ.)
Jang, Su-Hyeong (R&D Lab. in LS Industrial Systems Co.)
Chae, Woo-Kyu (KEPCO Research Institute)
Park, Jong-Ho (School of Electrical Engineering, Chungbuk National Univ.)
Kim, Jae-Eon (School of Electriccal Engineering, Chungbuk National University)
Publication Information
Journal of Electrical Engineering and Technology / v.11, no.6, 2016 , pp. 1600-1609 More about this Journal
Abstract
As the penetration of different types of renewable energy sources (RES) and energy storage systems (ESS) increases, the importance of stability in AC microgrid is being emphasized. Especially, RES and ESS which are operated using power electronics have difference in output characteristics according to control structures. When faults like single-line-to-ground fault or islanding operation occur, this means that a fault should be interpreted in different way. Therefore, it is necessary to analyze fault characteristics in AC microgrid in case of grid-connected mode and standalone mode. In this paper, the fault analysis for AC microgrid is carried out using PSCAD/EMTDC and an overvoltage problem and the countermeasures were proposed.
Keywords
Microgrid; Distributed generation; Overvoltage; Distribution system; Islanding;
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