Coordination control of PV inverters for load transfer operation of distribution feeders with high penetration of PV installation

This paper presents the dispatch of reactive power compensation and real power curtailment of PV systems to prevent the over voltage violation when load transfer between distribution feeders is executed. The voltage sensitivity factors of reactive power injection at all PV buses are derived according to the configuration of distribution network. The Advanced Distribution Automation System (ADAS) issues the control command to each PV inverter for adjustment of PV power generation according to the sensitivity coefficients and PV installation capacity so that the ancillary service of voltage support can be provided by all PV systems in a fairer manner. The practical Taipower distribution feeders are selected for computer simulation to verify the effectiveness of the proposed control method to mitigate the voltage violation problem for the operation of load transfer between distribution feeders with high penetration of PV installation.