采用柔性直流输电优化河南电网运行的前瞻性研究  

Prospective Study of Henan Power Grid Optimized Operation With VSC-HVDC

作　　者：安军[1] 柴旭峥[1] 王骅[1] 

机构地区：[1]国网河南省电力公司,河南省郑州市450052

出　　处：《电网技术》2016年第1期86-91,共6页Power System Technology

摘　　要：为了保证河南电网在互联电网大发展背景下的安全稳定高效运行,分析了河南电网作为特高压交直流混联典型受端电网在未来运行中面临的主要问题。结合柔性直流输电技术的优势特性和发展趋势,并针对河南电网的实际情况,设计了线路扩容、增加输电断面线路和采用背靠背柔性直流输电技术等4个技术方案。通过仿真计算和对比分析可知,采用背靠背柔性直流输电技术的方案在满足输送能力要求的同时,还能够减小系统短路电流水平,提高系统稳定性,平抑功率振荡。In order to guarantee stable and efficient operation of Henan power grid under background of bulk power grid interconnection, main challenges in power system operation are analyzed considering Henan power grid as typical receiving-end grid of hybrid UHV AC/DC power grid. With technical advantages and development prospect of voltage source converter based high voltage direct current（VSC-HVDC）, solution schemes are proposed for these challenges. Based on actual operation and developing conditions of Henan power grid, four technological schemes are designed： improving transmission line capacity, adding transmission section lines, developing back-to-backVSC-HVDC converter station, etc. According to simulation and comparative analysis of four possible technical schemes, advantages of VSC-HVDC schemes are obvious in decreasing short-circuit current, improving power grid stability and diminishing power oscillation with enough transmission capability in future operation of Henan power grid.

关 键 词：电网运行 VSC-HVDC 潮流控制 短路电流 电网稳定性 

分 类 号：TM721[电气工程—电力系统及自动化]