| 引用本文: | 王峰,张旭隆,何凤有,等.三电平静止同步补偿器内模控制研究[J].电力系统保护与控制,2014,42(9):96-102.[点击复制] |
| WANG Feng,ZHANG Xu-long,HE Feng-you,et al.Study on the internal mode control of three-level STATCOM[J].Power System Protection and Control,2014,42(9):96-102[点击复制] |
|
| 摘要: |
| 静止同步补偿器（STATCOM）用于电网动态补偿时，无功电流检测环节及电流控制器的设计对其补偿性能起着决定性的影响。在传统的FBD功率理论的基础上，对传统FBD检测法做出改进，引入电网虚拟磁链模观测器代替原有的锁相环对电网电压进行重构，提高了电网电压存在畸变时无功电流的检测能力，同时采用惯性环节代替了低通滤波器降低了检测系统的时延。在此基础上针对静止同步补偿器存在着非线性和强耦合的特性，提出一种基于内模控制原理和三电平空间矢量算法相结合的电流解耦控制方法，根据内模控制基本原理，设计了静止同步补偿器的双闭环内模控制器。基于Matlab/Simulink仿真平台，对改进型FBD无功电流检测方法和电流环内模解耦控制器进行了系统仿真分析，最后通过实验验证了控制方法的正确性和有效性。 |
| 关键词: 静止同步补偿器 内模控制 解耦 FBD 三电平 |
| DOI：10.7667/j.issn.1674-3415.2014.09.016 |
| 投稿时间：2012-09-19修订日期：2012-10-31 |
| 基金项目:中央高校基本科研业务费专项资金（2010ZDP01A10） |
|
| Study on the internal mode control of three-level STATCOM |
| WANG Feng,ZHANG Xu-long,HE Feng-you,ZHANG Xiao |
| (Department of Information and Electrical Engineering, Xuzhou Institute of Technology, Xuzhou 221111, China; School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou 221008, China) |
| Abstract: |
| When the static synchronous compensator (STATCOM) is used for grid dynamic compensation, reactive current detection aspects and current controller design play a decisive role. This paper, on the basis of the traditional FBD power theory, proposes an improved FBD detection method, and introduces the grid virtual flux mode observer to replace the original phase-locked loop to reconstruct the grid voltage, which improves the ability of detecting reactive current when grid voltage distortion occurs; at the same time, the inertial link is used to replace a low-pass filter to reduce the delay of the detection system. Considering the characteristics of nonlinear and strong coupling of static synchronous compensator, this paper proposes a current decoupling control method based on the internal model control principle and three-level space vector algorithm. Based on the basic principles of the internal model control, the double closed loop internal mode controller is designed for the static synchronous compensator. Based on Matlab / Simulink simulation platform, system simulation analysis of the improved FBD reactive current detection methods and the current ring mode decoupling controller is conducted, and the correctness and effectiveness of the control method is verified by experiments. |
| Key words: STATCOM internal mode control decoupling FBD three-level |
