抄録
In this paper, we propose a calculating method of regional transmission capacity pricing based on the interconnection of Independent Power Producers (IPPs) to reflect the proximity of the demand site and to allocate transmission capacity cost. In our model, economic load dispatching (ELD) and power flow calculation are integrated to evaluate regional transmission cost. First of all, in the ELD process, the output of utility's generator and IPPs are determined by the law of equal incremental fuel cost under the total system load demand. Then, power flow of each transmission line in the power system is obtained by the DC method using these generation outputs. Finally, the transmission capacity cost and price are estimated by the proposed allocation rule that reflects the proximity of the demand site and the improvement of reserve margin in the network. The results of case studies show that our proposed method can be applied to the quantification of factors unrelated to cost such as demand side proximity when purchasing from IPPs. We confirmed that our proposed method is a candidate for actual implementation.
