Abstract
Distributed resources (DR) can be a source of overvoltage problems for the electric power system if care is not exercised in the design and interface of the DR equipment. Conversely, DR may be adversely impacted by overvoltage conditions that originate on distribution feeders during faults, switching events, or as a result of lightning. Use of the appropriate DR grounding, interface transformer winding, proper switching methods, anti-island protection settings, lightning surge protection, and equipment voltage withstand ratings can help reduce the chance that either the DR or the utility system will be adversely impacted by overvoltages. This paper reviews the overvoltage issues associated with the application of DR on power systems and recommends approaches for prevention of problems.
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