基于传输函数的VFTO下变压器绕组建模  

Modeling of the transformer windings under VFTO based on transfer-function

作　　者：谢庆[1] 梁贵书[1] 孙海峰[1] 王晓晖[2] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003 [2]河北省电力研究院,河北石家庄050021

出　　处：《华北电力大学学报（自然科学版）》2007年第1期5-9,共5页Journal of North China Electric Power University：Natural Science Edition

基　　金：河北省自然科学基金资助项目(503624)

摘　　要：提出了一种基于传输函数的VFTO下变压器绕组的建模方法。该方法首先由网络分析仪测量获得的变压器绕组散射参数推导出电压传输函数的表达式;然后通过矢量匹配法将电压传输函数进行有理式拟合,并采用Routh逼近对其进行阶数缩减;在此基础上应用网络综合理论进行了电路实现,得到了变压器绕组的集中参数电路模型。模型的仿真结果与实测结果吻合,证明了该方法的正确性。A modeling way of transformer windings under VFTO is presented based on transfer-functions in this paper. Firstly, the voltage transfer-functions are calculated from the S parameters which are measured by network analyzer. Secondly, the voltage transfer-functions are fitted with rational functions by vector fitting and then orderreduced by Routh approximation. Lastly, the resultant voltage transfer-functions are synthesized by lumped elements. The simulation results from the circuit are in good agreement with the measured. This shows that the method is correct.

关 键 词：VFTO 散射参数 矢量匹配法 Routh逼近 电路综合 

分 类 号：TM41[电气工程—电器]