Abstract ― This paper discusses green power distributed
generation (DG) sources (of 10 MW or less), which are
connected to the utility system at the distribution level, and
their impact on distribution system reliability. Distribution
circuits are designed to supply radial loads. Therefore, the
introduction of green generation can result in: redistribution of
fault and load currents on the feeder circuit, overvoltage and
ferroresonance, plus a possible loss of protection system
coordination—all of which can result in customer outages. The
paper also discusses the specific reliability and protection
issues in interconnecting green power generators to utility
systems to mitigate the above cited reliability issues.
Index Terms ― Green power, DG, interconnection protection,
islanding, ferroresonance, IEEE 1547
Abstract ― This paper discusses green power distributed
generation (DG) sources (of 10 MW or less), which are
connected to the utility system at the distribution level, and
their impact on distribution system reliability. Distribution
circuits are designed to supply radial loads. Therefore, the
introduction of green generation can result in: redistribution of
fault and load currents on the feeder circuit, overvoltage and
ferroresonance, plus a possible loss of protection system
coordination—all of which can result in customer outages. The
paper also discusses the specific reliability and protection
issues in interconnecting green power generators to utility
systems to mitigate the above cited reliability issues.
Index Terms ― Green power, DG, interconnection protection,
islanding, ferroresonance, IEEE 1547
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