Ground Fault Protection of Microgrid Interconnection Lines Using Distance Relay with Residual Voltage Compensation
2021 74th Conference for Protective Relay Engineers (CPRE)(2021)
摘要
Protection of utility feeders that supplies an ungrounded/impedance-grounded Microgrids (MGs) or Distributed Energy Resources (DERs) is a challenging task, especially for Single-Line-to-Ground (SLG) faults. Normally, the interconnection line can be protected using: (i) a Direct Transfer Trip (DTT) from the utility station and/or (ii) an over-voltage relay (59G) energized by a broken-delta potentia...
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关键词
Phase measurement,Impedance measurement,Voltage transformers,Protective relaying,Surge protection,Microgrids,Impedance
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