Need to revise switched capacitor controls on feeders with distributed generation

This paper addresses the need to review switched capacitor settings on radial distribution feeders prior to installing distributed generation (DG). Bringing a DG on line without conducting an analysis may result in over-voltages or capacitors switching OFF, depending of the type of controls. A simple case of a feeder with a single DG and switched capacitor with different controls is examined in detail, and is illustrated with a numerical example. The analysis alerts electric distribution engineers to review and reset capacitor switching preset values, if necessary, prior to DG installation.