Fault Characteristics of Distributed Solar Generation with Super Conducting Fault Current Limiter
Keywords:
Distributed Energy Resources, Zero Sequence Currents, Dominion Energy, Super Conducting Fault Current Limiter, Fault ResponseAbstract
There are no negative or zero sequence currents present in inverter-based distributed energy resources (DERs). A thorough understanding of DER's fault characteristics is essential for fault investigation and relay configuration. While DER models have been extensively studied, there have been few studies examining DER's fault behaviour during real fault occurrences. Dominion Energy's reported fault incidents are examined in this article. To demonstrate that real DER fault responses may vary from prior understandings, fault magnitudes, angles and sequence components are analyzed. Additionally, the conductor's resistance is increased during faults by a Super Conducting fault current limiter (SFCL) linked in series with DER. There is a side-by-by-side comparison with and without the SFCL to highlight the fault characteristics.
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