分布式参数输电线路电磁暂态分析新方法(英文)  

A Novel Electro-Magnetic Transient Analysis Method for Distributed Parameter Transmission Lines

作　　者：哈恒旭[1] 谭雨珍[1] 薄志谦[2] 

机构地区：[1]山东理工大学,山东淄博255049 [2]阿海珐输配电有限公司英国分公司

出　　处：《南方电网技术》2009年第4期20-25,共6页Southern Power System Technology

基　　金：The National Natural Science Foundation of China (50707002);Shandong Educational Department Foundation (J06B06)~~

摘　　要：根据函数逼近原理,输电线路的电报方程可以整理为一组正交基的线性组合。文章采用Daubechies正交基,经过投影变换,映像到与依赖于时间变量的和建立在确定架构的函数空间,与输电线路的电压和电流相关的微分方程被转换为代数矢量方程。从而,建立起每一单元的投影等效模型,然后可以在投映域中对输电系统的暂态进行计算。利用EMTP仿真验证了所建议的方法。According to the approach criterion, the telegraph equation of transmission lines can be approximated with the linear combination of a certain set of orthogonal basis, for example, the set of the Danbechies wavelet. With projection to the Daubechies basis, a function space relates to time variable over a given resolution is mapped, and the differential equations related to the voltage and current of transmission line are transfurmed to algebraic vector equations. As a result the projected equivalent models of each unit can be obtained. Then, the transients of the transmission system can be computed in the projection domain. The proposed method is validated with EMTP simulation tests.

关 键 词：电磁暂态分析方法 输电线路 投影变换 

分 类 号：TM744[电气工程—电力系统及自动化] TM77