复合型链式STATCOM及其不对称运行能力研究  

Study on Compound Cascaded STATCOM and its Asymmetrical Operation Ability

作　　者：熊连松[1] 祝明华[1] 谢亦丰[1] 卓放[1] 

机构地区：[1]西安交通大学电气工程学院,陕西西安710049

出　　处：《陕西电力》2013年第8期10-14,55,共6页Shanxi Electric Power

基　　金：国家863资助项目(2012AA050206)

摘　　要：三相链式STATCOM有△型和Y型2种典型的联接型式,两者除了拓扑上的差异之外,在功能性、经济性、可靠性和技术实现上也有明显的差别。在对比分析两者优缺点的基础之上提出了一种复合型的链式STATCOM,并且从数学模型和物理意义2个方面分析了△型、Y型和复合型链式STATCOM三者之间的联系和区别,论证了复合型链式STATCOM在技术经济性上的比较优势。研究结果表明:复合型链式STATCOM结合了△型和Y型各自的优点,有效地回避了各自的缺点,在中高压不平衡补偿领域具有极高的推广应用价值。The existing 3-phase cascaded STATCOMs have two connection types, Y connection and A connection, which are very different from each other in the structure, functionality, reliability, economy and technical realization. Based on a comparative analysis of the merits and demerits of these two connection types, this paper puts forward a compound cascaded STATCOM. The internal relations and distinctions among the Y-connected, the A-connected and the compound cascaded STATCOM are revealed from two aspects of mathematical model and physical significance. Research results show that the compound cascaded STATCOM with comparative advantage in technology and economy has inherited the superiorities and overcame the shortcomings of the Y-connection and A-connection, which is worth popularizing in the field of high power and high voltage 3-phase unbalanced system.

关 键 词：复合型结构 三相不平衡 链式STATCOM 不对称运行能力 

分 类 号：TM714[电气工程—电力系统及自动化]