Planning of distribution systems with predominantly distributed generation

This paper presents a study of distribution system planning assuming a high penetration of distributed generation. Based on a power supply system with typical consumer structures, three scenarios with different levels of decentralization are defined. For these scenarios feasible networks are developed and discussed by a technical analysis. It is shown that the decentralized generation makes it possible to simplify the design of the electrical network and leads to higher power system reliability. In particular the isolated operation of different network configurations is important to realize a high reliability of power supply. Finally, an economical comparison of the developed structures is given.