Impact of load characteristics on transmission cost allocation

摘要

In today's deregulated electricity market, all decisions related to pricing of network usages are based on the economic aspect, which has increased competitions among market participants. Every market participants are to be recognized with regard to their involvement in energy exchange. Thus, development of a fair, reliable, feasible and efficient pricing model has become an important issue. A large percentage of total cost of power system operation is contributed by the cost of transmission channels. Practical power system consists of various types of loads; such as commercial, residential and industrial etc. These loads are generally nonlinear in nature and can affect the cost of transmission and its allocation up to a significant extent. In view of this, in this paper, an attempt has been made to investigate the effect of these load characteristics on transmission cost and its allocation. In this paper, the Optimum Transmission Cost (OTC) problem is formulated as an Optimal Power Flow (OPF) problem and solved using Artificial Bee Colony (ABC) algorithm. Further, the allocation of OTC is carried out through shapley value technique of Cooperative Game Theory (CGT). Modified IEEE 14 bus power system network is considered as test system and programs are developed in MATLAB. Simulated results show that the cost of transmission incurred to most of the loads increases with the increase in the load nonlinearity.