基于同步对称分量法的静止无功补偿装置  

STATIC VAR COMPENSATOR BASED ON THE METHOD OF SYNCHRONOUS SYMMETRICAL COMPONENT

作　　者：纪飞峰[1] 周荔丹[1] 姚钢[1] 陈陈[1] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海市徐汇区200030

出　　处：《中国电机工程学报》2005年第6期24-29,共6页Proceedings of the CSEE

基　　金：高等学校博士点基金项目(20030248043)。

摘　　要：该文提出了基于同步对称分量法的无功补偿导纳计算方法。该方法以电网三相正序电压为同步参考坐标,再利用旋转对称分量法可以方便地得到电网需要补偿的导纳值。文中提出的三相电压提取方法能有效地消除电网电压的畸变干扰,以电压为同步坐标的旋转对称分量法可消除电流中谐波的影响,从而可准确地计算出电网需要补偿的导纳值。基于该方法设计的静止无功补偿装置无需硬件锁相环,能够快速、准确地补偿对称/不对称负荷的无功功率,维持电压的稳定。采用 PSCAD 软件的仿真和实验结果证明,基于同步对称分量法的补偿导纳计算方法具有较好的效果。A new type of static var compensator (SVC) based on the method of synchronous symmetrical component is presented. The positive sequence voltage getting way introduced in this paper can eliminate the interference of source voltage distortion. With positive sequence voltage synchronous coordinate, the new method uses rolling symmetrical component method to obtain compensator admittance directly. The proposed SVC is simulated with PSCAD/EMTDC and a prototype based on this method is developed. The simulation and experimentation results verify that this type of SVC can get precise compensation result under the distortion of voltage and current, and it is fit for the var compensation to impactive, unbalance and low power factor loads.

关 键 词：静止无功补偿装置 对称分量法 同步 计算方法 不对称负荷 CAD软件 电网电压 提取方法 三相电压 无功功率 维持电压 导纳 再利用 锁相环 坐标 旋转 谐波 电流 

分 类 号：TM714.3[电气工程—电力系统及自动化] TM711