| Title |
A Method for Economically Determining an Interconnection Line of a Distributed Energy Resource in the Distribution Networks |
| Authors |
홍성혁(Seong-Hyeok Hong ); 진영규( Young Gyu Jin ); 김승완 ( Seung Wan Kim) |
| DOI |
https://doi.org/10.5370/KIEE.2019.68.8.951 |
| Keywords |
Distributed Energy Resource (DER); Distribution Line; Connection Cost; Renewable Energy |
| Abstract |
In line with the worldwide effort for reducing greenhouse gases, renewable-based distributed energy resources (DERs) connected to distribution networks have been increasing in Korea. Thus, the utility company of Korea should reinforce the distribution networks as soon as possible to effectively deal with the increased application of DER connection. However, this is a problem related to not only technical solutions but also enormous investment, such that it is necessary to devise an economical way. Therefore, in this study, we focus on the problem of selecting an interconnection line of a DER and propose a method for economically determining one in terms of the present value of investment cost. The analysis results with the proposed method show that, since the selection of an interconnection line depends on the growth rates of loads and generation and on the distance to the line, simply selecting the nearest line according to the current procedure may not be an economic decision. Further, it can be suggested from the results that some amendments to the current procedures might make the investment in the distribution networks more economically efficient from a long-term perspective. |