Reliable electrical power supply by DGS for unbundled power quality services

The authors propose a new electrical power delivery system named FRIENDS (Flexible, Reliable and Intelligent Electrical eNergy Delivery System). FRIENDS is a new concept of power distribution system which can realize unbundled power quality services under de-regulated conditions. In order to realize FRIENDS, a system network configuration of FRIENDS itself must be developed. For unbundled power quality services, and especially for reliable power supply, the authors propose a new algorithm to create a network of FRIENDS. The proposed method is based on the tabu search method, and can find the least cost network configuration of FRIENDS under the constraint that no overloads exist in multiple fault cases