The scoping study of Kazakhstan-China-Republic of Korea power interconnection

Electric interconnection is an essential trend for future large-scale development and utilization of renewable energy.China has proposed the concept of Global Energy Interconnection to realize the clean utilization of energy through the interconnection of power grids and optimize the allocation of global energy resources.This study proposes the Kazakhstan-China-Republic of Korea networking scheme,analyzing the characteristics of power supply and demand in these countries.Based on the regional economic analysis and power development,four interconnection schemes are proposed utilizing UHVDC technology.Accordingly,existing problems and favorable factors are fully considered.The investment analysis of±1100 kV and±800 kV lines,configuration scheme of the converter station,and investment estimation of four interconnection schemes are given.