未来高压直流电网发展形态分析_姚良忠.pdf

34 34 Vol.34 No.34 Dec.5, 2014 2014 12 5 Proceedings of the CSEE ©2014 Chin.Soc.for Elec.Eng. 6007 DOI 10.13334/j.0258-8013.pcsee.2014.34.001 0258-8013 (2014) 34-6007-14 TM 721 1 1 1 1 2 (1 100192 2() 100084) Pattern Analysis of Future HVDC Grid Development 1 1 1 1 2 YAO Liangzhong , WU Jing , WANG Zhibing , LI Yan , LU Zongxiang (1. China Electric Power Research Institute, Haidian District, Beijing 100192, China; 2. State Key Lab of Control and Simulation of Power Systems and Generation Equipments (Department of Electrical Engineering, Tsinghua University), Haidian District, Beijing 100084, China) ABSTRACT: The development of high voltage direct current (HVDC) grid is an effective approach to implement the large-scale long-distance power transmission, the large-scale renewable energy integration and accommodation, and the safe and stable operation of the interconnected AC grids. This paper reviewed the latest research progresses of DC transmission technologies, summarized the characteristics of DC grid, and discussed the current research status of DC grid. Then a typical DC/DC topology of HVDC grid considering the integration of large-scale renewable generations over different regions was proposed. The technical requirements of such a HVDC grid 0 was studied and refined accordingly. Furthermore, new types of key equipment, new control and protection technologies,