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This paper describes strategies for a future power transmission line interconnection route going toward South Korea in Northeast Asia (NEA). These interconnection routes can be selected depending on scenarios involving possible power transmission lines in NEA. In South Korea, the power capacity can compensate with reserve power by the utilization of seasonal load patterns for each country or by the construction of additional power plant in NEA for the future power shortages faced by the metropolitan areas or by the southeastern area of the South Korea. In this paper, strategies for future power system interconnection routs in Northeast Asia (NEA) are presented for various cases of power system interconnections. These routes consist of radial or loop power system interconnections shown on power system strategy maps in NEA.

In this paper, we present recent representative case studies about technical and economical considerations for the power system interconnection in Northeast Asia (NEA). These activities on interconnection between countries or areas in a NEA have been considered and presented from many sides including considering political and economical situations. In South Korea, recent studies of power system interconnection are trending toward specific technical and economical considerations for each of several scenarios. In this paper, strategies for future power system interconnection routs in Northeast Asia (NEA) are presented for various cases of power system interconnections, and include reliability studies, power flow studies on technical sides and economic feasibility studies.