Voltage rise produced by solar PV r

Voltage rise produced by solar PV resources in a distribution feeder is a result of offsetting the loads in the feeder by PV generation. Without PV, voltage would drop along the feeder as shown in Fig. 1(b) for a simple redial feeder shown in Fig. 1 (a). With PV, if all loads are perfectly balanced by PV generations at each point of connection, then ideally no active power would flow through the feeder and voltage profile would be nearly flat as in Fig. 1(c). However, if the PV generation exceeds feeder loads, especially at furthest end of the feeder, then power flows back from feeder to the upstream network and this causes the voltage to rise, as shown in Fig. 1(d). In this scenario,, voltage rise occurs due to the surplus power at the PCC of each PV connection.