Comparative Multi-objective Investigation of Radial and Ring Distribution System in the Presence of DGs

Paper in proceeding, 2021

Power distribution systems must have the potential to satisfy the needs of their customers, such as high reliability, low power loss, acceptable voltage profile, and exploitation of Distributed Generators (DGs). The distribution grids, generally, are operated in a radial mode in rural areas. Hence, there is one current direction in the radial systems; however, DGs lead to a bi-directional current. Additionally, the radial system has another limitation regarding the reliability of the system. Therefore, there is a need to change radial ones into ring distribution systems to optimize DGs' integrated capacity. In this paper, a redial distribution system is introduced, and afterward, the optimal ring distribution system by utilizing closed Circuit Breakers (CBs), which had been normally open, is implemented. The proposed method is effectively have been tested, and it enables ring distributed systems in the presence of DGs to have high reliability, low power loss, and acceptable voltage profile. The radial IEEE 33-bus system and a real 41 bus system have been evaluated, and in some cases, the benchmark system converted to a ring system with connecting DGs. In the end, the comparison of distribution systems has been investigated.