Distributed Solar Integration Experiences - Utility Variable ...

The Author’s ExperiencesRelated to PV Fault Levels• In doing many projects, I have observed that fault currentproblems associated with PV in most cases are not an issuedue to the low currents injected by the inverter (about 1‐2per unit of rating).• In general, only the largest PV (or large PV aggregations) cancause enough fault current to even begin to worry currentimpacts (there are some special exceptions).• As PV capacity grows on a circuit, voltage problems usuallyarise well before fault currents become an issue. A circuitwithout voltage problems is not likely to have fault currentproblems due to PV.Prepared by Nova Energy Specialists, LLC 24