多电平静止无功发生器主电路拓扑综述.pdfVIP

电工电气 (20 2 No.5) 多电平静止无功发生器主电路拓扑综述 多电平静止无功发生器主电路拓扑综述 1 1 2 3 黄河 ，韦永忠 ，金丽莉 ，王宝安 (1 江苏省电力公司，江苏 南京 210024；2 扬州供电公司，江苏 扬州 225009； 3 东南大学 电气工程学院，江苏 南京 210096) 摘 要： 静止无功发生器 SVG 能有效补偿无功功率，抑制谐波电流，提高电能质量。综述了多电 平 SVG 的主电路拓扑结构，介绍了基本多电平 SVG 和新型多电平 SVG 的主电路拓扑结构，指出在高压 大容量实用场合，采用二极管箝位型和级联型多电平结构的 SVG 装置应用较多，两相型 SVG 能够解决 电气化铁道牵引负荷带来的负序、谐波和无功等电能质量问题，而在基本多电平结构上进行改进的新 型多电平结构尚处于理论研究阶段，是未来研究重点。 关键词： 静止无功发生器；电能质量；拓扑结构；多电平 中图分类号：TM714.3 文献标识码：A 文章编号：1007-3175(2012)05-0004-05 Survey of Main Circuit Topologies of Multilevel Static Var Generator   2  HUANG He , WEI Yong-zhong , JIN Li-li , WANG Bao-an Jiangsu Electric Power Company, Nanjing 2 002, China; Yangzhou Power Supply Company, Yangzhou 225009, China; （1 2 3 School of Electrical Engineering, Southeast University, Nanjing 2 0096, China ） Abstract: The static var generator (SVG) can effectively compensate reactive power, suppressing harmonic currents and raising power quality. This paper summarized the main circuit topologies of multilevel SVG. Introduction was made to the basic multilevel SVG and the new type of main circuit topologies of multilevel SVG. It is pointed out that the SVG with multilevel structure of diode clamping or cascade connection was widely used in high-voltage and large-capacity practical situation. Two-phase SVG can solve problems of power quality, such as negative sequences, harmonics and reactive power caused by electrified rail traction, however, the new type of improved multilevel structure is still on the t