A study on distribution network planning with considering customer´s utilization of distributed generators

The paper proposes a new framework for distribution network planning, in order to obtain the maximum merit of utilities and customers under the condition of mass installed distributed generators (DGs). An objective function, which includes an ancillary service charge for cogeneration systems, is formulated to obtain maximum profits for customers, and the authors discuss the reduction of a customer´s energy costs for installation of DGs. On the other hand, an objective function, which includes an ancillary service charge for distribution network planning, is formulated to obtain maximum profits for utilities, and the authors discuss reduction of the utilities´ investment cost and distribution system loss for the installation of DGs. The authors also discuss the ancillary service rate under the consideration of cost effects for utilities and customers. The advantage of the proposed method is demonstrated through several numerical simulations by using example distribution systems.