Evaluation and comparison of economical efficiency of HVDC and AC transmission

The present paper proposes a software prototype that evaluates and compares economical efficiency of HVDC and AC transmissions. An economic analysis of alternatives is performed to find an appropriate transmission line types during planning construction of transmission lines. This paper proposes a system that automates this process. This software is designed to process financial and technical data of HVDC and AC transmission project and calculate overall cost of them to find an economically efficient transmission lie type. Breakeven analysis and sensitivity analysis are introduced in the software to find an optimum condition of each project. The software calculates power loss from parasitic reactance at transmission lines and converts it into financial loss which is added to overall project cost. The software has been tested with sets of virtual project data and test results by using short and medium transmission line are introduced and compared in the present paper.