A Novel Index for the Assessment of Distribution System Performance with the Integration of Renewable Energy Sources

This paper introduces a TPI (Total Performance Index) to evaluate the operations of a distribution system with Renewable Energy Sources (RES). This TPI includes multi-criteria evaluation components such as voltage deviation, harmonic distortion, and power losses to measure system's efficiency and stability. The IEEE 13-bus radial distribution system is transformed into a microgrid, and several simulations are carried out with different RES integration levels. The findings show that partial integration of RES improves voltage stability and reduces power losses, while full integration damages efficiency by introducing harmonic distortions, demonstrates the need for further study’s advanced mitigation techniques and optimal placement of RES to increase efficiency of the system outlined. The primary goal was to evaluate the operation of the recorded load distribution systems integrated with RES For that purpose, the issues related to harmonics of those systems were studied.