Analysing the performance of distribution power system with photovoltaic integration and static var compesation

Abstract The connection of photovoltaic (PV) plants to the existing electricity transmission and distribution networks (DN) is no longer a novelty but a daily development and modernization of the existing network. This electrical network was not initially built for this purpose, but in order to meet the growing energy demand, it must also cope with the connection of renewable energy sources (RES), mainly PV plants. This study examines how combining PV plants and static variable compensation (SVC) affects the DN’s stability and power quality (PQ). Geographical location and physical space dictate the actual network taken into consideration for connecting PV plants, while the voltage stability index (VSI) has been employed for SVC. From the analysis, it was seen that when these two technologies are coordinated to work together, they have a reduction in active losses by 72% and reactive by 29% compared to the real base case. Additionally, the voltage rises and becomes as close to the nominal voltages as possible while the lines overload decreases by 50%. These two technologies also affect the reduction of VSI compared to the base case by showing the support in voltage stability. The distribution system operator (DSO) might use these findings as a starting point when making plans for a new, diverse, and altered network.