Review of the Impacts of Distributed Generation on Distribution Protection

Distribution protection practices have undergone many changes in recent years due to higher penetration of distributed generation (DG) and advanced control systems on distribution systems. To help utilities prepare to meet these evolving challenges it is very useful to learn from the practices and experiences of others in the industry. Accordingly, EPRI has conducted a review of participating utilities to gather information on distribution protection practices. The ultimate goal of this review was to learn about existing protection practices and determine what lessons have been learned from experiences with protection of distribution systems with DG.