静止无功补偿器多目标统一控制方法  

Unified Controller of Multiple Objects for Static Var Compensator

作　　者：方璐[1] 罗安[1] 徐先勇[1] 李琪[1] 方厚辉[1] 涂春鸣[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南省长沙市410082

出　　处：《中国电机工程学报》2010年第19期106-113,共8页Proceedings of the CSEE

基　　金：国家自然科学基金项目(60774043);湖南省科技厅计划项目(2009FJ3036;2008FJ3112)~~

摘　　要：针对静止无功补偿器(static var compensator,SVC)补偿配电网负荷引起的电压波动、功率因数较低和负序电流问题,提出一种多目标统一控制器。它主要由功率因数闭环–负序电流补偿前馈控制支路和SVC安装点电压闭环–负序电流补偿前馈控制支路组成,两条控制支路可依据补偿目标自动切换。对功率因数闭环控制设计了模糊PI控制器,可依据滞环环宽对功率因数进行粗调及细调;对SVC安装点电压闭环控制采用最优非线性PI控制算法。建立了被控对象SVC的控制模型。工业应用结果不仅证明了本文理论分析及所提多目标统一控制方法的正确性和有效性,还对SVC在工程应用上的产品化起到一定的借鉴作用。Due to the voltage fluctuation, low power factor and negative phase sequence （NPS） current caused by loads of distribution network, at where the static vat compensator （SVC） was used to solve those power quality problems. A multiple objects unified controller was proposed. The proposed control method was composed of two control parts. One control branch was closed-loop control of power factor and NPS current compensation feedforward control, another control branch was closed-loop control of bus voltage at the point of common coupling （PCC） and NPS current compensation feedforward control. Two control branchs could be automatically determined by compensation objects. The fuzzy-Pl controller was design for closed-loop control of power factor, and was used to coarsely adjust or finely adjust the power factor by hysteresis loop width. The optimal nonlinear PI controller was proposed for closed-loop control of PCC voltage. The control model of SVC was also established. Industrial application results not only verify the validity of the proposed control strategies and research contents, but also perform the function of reference in SVC engineering application and apparatus production.

关 键 词：静止无功补偿器 功率因数 电压波动 负序电流 补偿 多目标统一控制 

分 类 号：TK228[动力工程及工程热物理—动力机械及工程]