Stage Fault Test of a Low Voltage Microgrid for Development of Protection Scheme

Author(s): Shi-Lin Chena*,Yen-Lin Chena, Yung-Ruei Changb, Chen-Min Chanb
a Electrical Engineering Department, Chung Yuan Christian University, Jhongli 32023, Taiwan
b Institute of Nuclear Energy Research, Longtan 32546, Taiwan
International Journal of Smart Grid and Clean Energy, vol. 1, no. 1, September 2012: pp. 116–121
ISSN: 2315-4462
Digital Object Identifier: 10.12720/sgce.1.1.116-121  

Abstract: One of the key elements of microgrid is protection system. To design the protection system for a 380 V microgrid, a stage fault test has been conducted in a microgrid test bed built at the Institute of Nuclear Energy Research (INER), Taiwan. The special feature of ground fault voltage of the 380 V microgrid is investigated in the test, based on which a protection scheme is proposed. This paper presents the INER microgrid test bed and the stage fault test conducted as well as the preliminary evaluation results of the proposed protection scheme.

Keywords: Microgrid, protection, stage fault test

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