| 摘要: |
| 静止无功发生器(Static Var Generator ，SVG)多采用双闭环PI控制。这种控制方式下，SVG启动瞬间会产生过大的冲击电流。分析了冲击电流产生的原因，在此基础上，设计直流电压逐步升高和电容能量外环控制相结合的方法，以降低冲击电流。通过Matlab/Simulink仿真对此方法进行仿真研究。最后，通过研制的SVG实验平台，对设计的方法进行实验验证。仿真和实验结果表明，该方法能够有效抑制启动冲击电流，SVG装置能够精确地补偿负载所产生的无功功率。 |
| 关键词: 启动 冲击电流 直流电压 电容能量 静止无功发生器(SVG) |
| DOI：10.7667/PSPC151200 |
| 投稿时间：2015-07-12修订日期：2015-08-11 |
| 基金项目:河南省控制工程重点学科开放实验室资助项目(KG2011-06) |
|
| Inhibition of start-up inrush current of static var generator |
| AI Yongle,WANG Wei |
| (College of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454003, China) |
| Abstract: |
| Dual closed-loop PI control is always used for SVG. On this occasion, SVG is easy to generate inrush current during start-up period. This paper analyzes the cause of inrush current''s generating. Therefore, a method that combines with the DC voltage increasing through step be step and capacitor energy outer loop control is designed to reduce magnitude of the inrush current. The simulation model of SVG is established in Matlab/Simulink to verify the proposed method. Finally, an experimental prototype of parallel SVG is developed to verify the method. The results from the simulation and experiment show that this method can effectively restrain the start-up inrush current and the SVG device can accurately compensate the reactive power generated by loads. |
| Key words: start-up inrush current DC voltage capacitance energy static var generator (SVG) |
