西南水电送华东多送出多馈入直流系统稳定控制策略  

System Stability Control Strategy for Multi-Send & Multi-Infeed HVDC Project from Southwest Hydropower Stations to East China Power Grid

作　　者：郭小江[1] 卜广全[1] 马世英[1] 申洪[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192

出　　处：《电网技术》2009年第2期56-61,共6页Power System Technology

摘　　要：定义了多送出多馈入直流系统(multi-send & multi-infeed DC,MS-MIDC),分析了此类系统的特点及问题。从MS-MIDC角度出发,研究了利用静止无功补偿器(static var compensator,SVC)和调相机提高西南水电送华东MS-MIDC系统稳定性的动态无功补偿方案。针对MS-MIDC系统中各直流系统相互支援方便的优势,提出了利用直流系统过负荷能力和频率调制功能实现直流系统间协调控制,改善了系统在严重故障下稳定水平。仿真计算结果验证了所提控制策略的有效性。The definition of multi-send ＆ multi-infeed DC （MS-MIDC） system is given in this paper, and the features and existing problem of this kind of system are analyzed. From the viewpoint of MS-MIDC system, to enhance the stability of MS-MIDC project from hydropower stations in Southwest China to East China power grid a scheme of dynamic reactive power compensation through both static vat compensator （SVC） and synchronous condenser is researched. Considering the superiority of easy to implement mutual support among HVDC systems within this MS-MIDC project, it is proposed to utilize both overload capability and frequency modulation function of HVDC systems to realize the coordinated control among HVDC systems to improve the stability level of the project under serious faults. Simulative calculation results verify the effectiveness of the proposed control strategy.

关 键 词：多送出多馈入直流(MS-MIDC) 特高压直流(UHVDC) 安全稳定 

分 类 号：TM712[电气工程—电力系统及自动化]