链式多电平静止无功发生器的研究

Research on cascade multi-level static var generation

电力系统无功补偿装置可以改善电压质量,降低线路损失。利用静止无功补偿装置实现动态无功补偿的研究是目前电力电子学科中比较活跃的研究领域之一。首先简要介绍了链式多电平静止无功发生器的发展背景,其次介绍了SVG的基本原理,即从系统吸收无功功率或给系统提供无功功率,接着介绍了链式多电平SVG的优点并给出了它的结构,搭建基于saber的采用SVPWM算法的链式7H桥的SVG模型,并给出仿真结果和分析。

Reactive power compensation may improve voltage quality and reduce the loss. The research on compensating reactive power using static compensation device is one of the most active areas in power system subject of the line. This paper firstly introducd the background of cascade multi-level static var generation, then it introduced the basic principles of SVG, absorbing reactive power from the system or applying reactive power for the system after that it introduced the advantages of cascade multi-level SVG and its structure was given. At last ,it built cascade 7 H-bridge SVG model used SVPWM algorithm on saber, it gave the simulation results and anlysis.