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A renewable energy management system has been proposed in this study to provide the highly effective control of PV smart inverters to enhance the utilization of solar energy and to prevent the overvoltage problem for distribution system with high penetration of PV systems. The real power generation by each PV system connected in the distribution feeder is determined according to the installation capacity. the hourly solar irradiation forecasting and the PV panel temperature. An impact analysis software has been embedded in the REMS system. which will retrieve the attributes of distribution components from the facility database to build the network topology of study feeder and generate the input data files for impact analysis. The decision making for the control of PV inverters has been derived to adjust the power factor setting and real power generation curtailment for the PV system when the service voltage exceeds the operation constraint. To verify the accuracy of the impact analysis due to PV integration and to demonstrate the effectiveness of the proposed REMS. a rooftop PV system with capacity of 352 kWp has been selected for field testing and computer simulation. It is found that the voltage variation at the PCC after the control of power factor and real power curtailment by the smart inverters is very consistent with the results of impact analysis of PV system integration.
