基于瞬时无功理论与伏安特性的静止无功补偿器控制系统及应用  

Static Var Compensator Control System Based on Instantaneous Reactive Power Theory and U-I Characteristic and Its Application

作　　者：桂卫华[1] 张定华[1,2] 阳春华[1] 王卫安[2] 

机构地区：[1]中南大学信息科学与工程学院,湖南长沙410083 [2]变流技术国家工程研究中心,湖南株洲412001

出　　处：《信息与控制》2009年第5期608-612,共5页Information and Control

基　　金：国家863计划资助项目(2006AA05Z248);国家973计划资助项目(2002CB312200)

摘　　要：为在抑制电压波动、补偿三相不平衡和提高功率因数的同时减小静止无功补偿器的容量,提出了一种基于瞬时无功理论和分段式伏安特性电压控制相结合的集成控制策略.利用瞬时无功理论快速计算提高了补偿器的响应速度,同时利用分段式伏安特性的电压控制扩大了其补偿范围、改善了系统的稳态性能.两者通过专家规则集成控制补偿系统的无功功率,这既提高了响应速度,也拓展了控制范围,减小了安装容量和运行损耗.在冷水江钢厂950mm热轧线的应用验证了其可行性和有效性.In order to suppress voltage fluctuation, compensate three phase unbalance, improve power factor and decrease the capacitance of static var compensator （SVC） simultaneously, an integrated control method with instantaneous reactive power theory and voltage control based on piecewise voltage-current characteristic is put forward. Fast calculation based on instantaneous reactive power theory enhances the response speed of SVC, and voltage control based on piecewise voltagecurrent characteristic ensures the good stable characteristic and expands the compensation range of SVC, which are combined by expert rules to control the compensatory reactive power. It not only increases the response speed and expands the control range, but decreases the installed capacity and operation loss of SVC. The system is put into operation in the rolling mill system of LengShuiJiang 950 mm steel plant. The effectiveness and feasibility are proved.

关 键 词：集成控制 伏安特性 静止无功补偿器 瞬时无功功率 比例积分 轧机 

分 类 号：TM714[电气工程—电力系统及自动化]