DISTRIBUTION SYSTEM ANALYSIS CONSIDERING PHOTOVOLTAIC GENERATION WITH OPTIMAL CONTROL OF INVERTER POWER FACTOR
Distributed Generation (DG) is very convenient, because it can delay or even avoid load reinforcing investments in distribution networks. In particular, we can mention the Photovoltaic Generation (PV), which is currently growing quickly and it is available all over the planet. With this large increase, it is necessary to worry about the control of technical losses in the network and the voltage levels at each bus. The goal of this research is to find the optimal adjustment for the Power Factor (PF) in the PV inverters, which minimizes the technical losses and improves the voltage profile. To solve the problem, an Optimal Power Flow (OPF) was modeled considering the hourly variations of load and PV power availability. The equations were modeled in AMPL software and the Knitro solver was used. The algorithm was tested on a 10/34-bus system and the results are presented for the systems operating with several PV configurations and it is demonstrated that the optimal control of the PF is more efficient if compared to others PV inverters operating mode.