基于滑模控制的SVG无功补偿控制策略研究  

Study on Control Strategy of SVG Reactive Power Compensation Based on Sliding Mode Control

作　　者：刘海舰[1] 曾庆军[1] 赵冰冰[1] 魏月[1] 申兆丰[1] 

机构地区：[1]江苏科技大学电子信息学院,江苏镇江212003

出　　处：《电力电容器与无功补偿》2017年第1期55-60,共6页Power Capacitor & Reactive Power Compensation

基　　金：江苏省科技支撑计划项目(BE2012146);镇江市重点研发计划项目(GY201503)

摘　　要：静止无功发生器(static var generator,SVG)是当今先进的无功补偿装置,但他具有强非线性、强耦合性以及工程设计难以实现等特点,而且在实际工程应用中,补偿装置容易受元器件参数的变化及外界的扰动,影响到装置的无功补偿效果。本文以dq坐标系下的数学模型为基础,提出了一种新型的静止无功发生器双闭环控制策略,其中电压外环采用滑模控制,电流内环采用前馈解耦控制策略。经Matlab/Simulink搭建系统的仿真模型,仿真结果表明,该控制策略设计思路新颖、明确,便于实现,而且控制系统具有较强的鲁棒性和动态性能。Static var generator（SVG）is presently the most advanced reactive power compensation device.However,it has such features as strong nonlinearity,strong coupling and difficult realization in engineering design and,furthermore,in the practical engineering application,the compensation device is easy to be influenced by the parameters of the elements and external disturbance and therefore the reactive power compensation result of the device is affected. In this paper,a novel double closed-loop control strategy of a SVG is proposed with the mathematic model under dq coordinate system as base,in which voltage outer loop is controlled by sliding model and current inner loop by feed-forward decoupling control strategy. The simulation model of the system is built by Matlab/Simulink and it is shown by the simulation result that the control strategy is novel,clear and easy to achieve in the design concept,and the control system has strong robustness and dynamic performance.

关 键 词：静止无功发生器(SVG) 滑模变结构控制 鲁棒性 仿真 

分 类 号：TM761.12[电气工程—电力系统及自动化]