大区电网互联的几个重要问题  

PROPOSALS CONCERNING INTERCONNECTION OF REGIONAL POWER SYSTEMS

作　　者：徐博文[1] 

机构地区：[1]中国电力科学研究院,北京清河100085

出　　处：《电网技术》1999年第9期32-34,共3页Power System Technology

摘　　要：决定大区电网以直流互联的主要优点在于，两交流电网可以非同步运行；两网可以互相隔离，不传送短路功率，有利于再发展；大区之间的周边联网问题，一般都是较小容量的效益型联网，可以因地制宜，选择不同联网方式；采用或者有可能采用背靠背换流站时，需要考虑中长期规划；直流输电可以取代特高压交流输电方式，问题在于特高压的技术难点难以解决；与西北联网及其内部更高一级电压等级采用５００ ｋ Ｖ 问题；展望 ２１ 世纪电网发展的新技术；全国电网大面积互联的逐步形成。Meritorious factors of interconnecting regional power systems by HVDC: Two AC networks operating at non synchronism, no short circuit power transmitted between two AC circuits, for the benefit of further system development;Low power, short distance interconnection near the borders may select either AC or DC;Back to back DC transmission should be designed according to long term system planning; DC transmission will be used instead extra high voltage transmission;Voltage levels within north west power system and its interconnections with the outside regional power systems;The development of power system new technique in next century should be considered;Nation wide interconnection will be formed up step by step, according to long term system planning.

关 键 词：大区电网 直流输电 规划 电网互联 电力系统 

分 类 号：TM715[电气工程—电力系统及自动化] TM727