基于指令电流检测的DSTATCOM仿真研究  

Simulation Study on the DSTATCOM of Command Current Detection

作　　者：侯圣语 Hou Shengyu

机构地区：[1]日照港股份有限公司动力分公司

出　　处：《变频器世界》2021年第5期83-87,共5页The World of Inverters

摘　　要：配电网静止同步补偿器(DSTATCOM)是柔性交流输电系统(FACTS)的核心设备,能够解决诸如系统低功率因数、电网谐波污染、电压波动与闪变、三相系统不平衡等电能质量问题。本文研究的DSTATCOM以二极管中点箝位式三电平逆变器为主电路结构,在系统平衡情况下建立了三电平DSTATCOM的数学模型,并实现解耦。然后,研究了基于指令电流检测的电流状态反馈解耦控制方法,并进行仿真验证。仿真研究表明,基于指令电流检测的电流状态反馈解耦控制方法对提高系统功率因数是行之有效的。Distribution Static Synchronous Compensator(DSTATCOM)is a flexible AC transmission system(FACTS)devices in the core,which is a very good solution to many power quality problems,such as low power factor,harmonic pollution,voltage fluctuation and flickerjhree-phase voltage unbalance.Thus,this thesis mainly focuses on a DSTATCOM based on a three-level neutral-point clamped converter.The decoupling Mathematical model of three-level DSTATCOM in balanced situation is established.Then,current state feedback decoupling control based on the command current detection is studied and simulated.The simulation results show that the method can realize its compensation functions.

关 键 词：无功补偿 三电平DSTATCOM 电力状态反馈解耦 MATLAB仿真 

分 类 号：TM461[电气工程—电器]