华中电网的直流紧急功率支援问题  

Research on Emergency DC Power Support in Central China Power Grid

作　　者：段瑶[1] 陈龙[2] 张步涵[1] 王丹[1] 

机构地区：[1]强电磁工程与新技术国家重点实验室(华中科技大学),湖北省武汉市430074 [2]上海市电力公司,上海市金山区200540

出　　处：《电网技术》2012年第2期104-108,共5页Power System Technology

基　　金：国家自然科学基金项目(50807020)~~

摘　　要：研究了1 000 kV交流特高压试验示范线建成后,直流输电调制对华北—华中互联电网运行安全稳定的作用。分析了直流紧急功率支援的机制以及实现方法,并对华中电网内直流系统发生双极闭锁故障时,华北—华中互联电网和特高压交流输电通道承受故障冲击的能力及系统的安全稳定水平进行了仿真分析。通过一回直流双极闭锁故障时,华中电网中4回直流输电线路之间紧急功率支援的仿真研究结果表明,采用直流输电系统紧急功率支援对保持互联系统稳定性和供电可靠性具有良好的效果。The impact of HVDC power transmission modulation on security and stability of Central China power grid interconnected with North China power grid after the building up of 1000kV AC demonstration project is researched. The mechanism and implementation of emergency DC power support are analyzed and the simulation analysis on the ability of both interconnected power grid and UHVAC transmission line to bear the failure impact and the security and stability level of the whole system under the bipolar blocking occurred in HVDC system within Central China power grid is performed. Simulation results of emergency DC power support among four circuits of HVDC transmission lines within Central China power grid under bipolar blocking occurred in one circuit of HVDC transmission line show that it is efficient for keeping stability and reliability of power supply of interconnected power grid to adopt emergency DC power support within HVDC power transmission system..

关 键 词：直流输电 紧急功率支援 特高压交流 电力系统 稳定与安全 

分 类 号：TM71[电气工程—电力系统及自动化]