基于Simulink的STATCOM的控制仿真研究  

Study on Control System About STATCOM Based on Simulink

作　　者：肖坤[1] 赵彩虹[1] 肖露 张迈[1] 郑舒[1] 

机构地区：[1]南京师范大学电气与自动化工程学院,江苏南京210042 [2]邯郸市水利水电勘探设计院,河南邯郸056000

出　　处：《南京师范大学学报（工程技术版）》2011年第4期6-11,共6页Journal of Nanjing Normal University(Engineering and Technology Edition)

摘　　要：从静止同步补偿器(STATCOM)的基本结构和工作原理出发,对参考电流检测方法进行了介绍,利用虚拟对称三相系统的合成电压矢量形成旋转坐标系的基本思想,在瞬时无功功率理论基础上对id-iq检测方法进行了改进,STATCOM系统的控制策略为电流间接控制,采用双环控制,外环控制为直流侧电容电压控制,内环控制采用电流控制,调制方法采用PWM调制.运用MATLAB/Simulink仿真工具建立了STATCOM的仿真模型,仿真了在恒定感性负载、在恒定容性负载和负载由感性到容性变化的情况.仿真结果表明,设计的STATCOM控制系统在恒定负载下具有良好的补偿效果,并且在负载性质发生变化以及突加负载和突甩负载情况下具有较快的动态响应速度和良好的跟踪能力,验证了所述控制方法的正确性和有效性.In the present thesis, special attention is firstly paid to basic structure and working principles of STATCOM operation, introducing the detected method of reference current, using composite voltage vector of virtual symmetric three-phase system to form rotating coordinate system. The id - iq test method was improved based on the Instantaneous reactive power theory, and the control strategy of STATCOM system is current indirect control. It adopts double loop control. Outer loop control is capacitance of DC voltage cotrol. Inner loop control is current control. The thesis creates the simulation model of STATCOM using MATLAB/Simulink simulation tool. It simulates the situations in constant in- ductive load, inductive load changes, the constant capacitive load and the load changing from the inductive to capaci- tive. Simulation results show that the control system of STATCOM has good compensative effect in constant load, and has excellent transient stability in changing load and sudden adding or sudden rejecting load. Control method described in this article demonstrates the correctness and The simulation results prove the correctness and effectiveness of the control strategy.

关 键 词：无功补偿 电流间接控制 瞬时无功功率理论 MATLAB仿真 静止同步补偿器 

分 类 号：TM761[电气工程—电力系统及自动化]