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題 名 | A Review of Methods for Calculation of Frequency-dependent Impedance of Overhead Power Transmission Lines=架空輸電線頻變阻抗計算方法之評論 |
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作 者 | 王耀諄; 劉士傑; | 書刊名 | Proceedings of the National Science Council : Part A, Physical Science and Engineering |
卷 期 | 25:6 2001.11[民90.11] |
頁 次 | 頁329-338 |
分類號 | 448.35 |
關鍵詞 | 架空輸電線; Carson's method; Complex depth of earth return; Finite element method; Frequency-dependent impedance; |
語 文 | 英文(English) |
中文摘要 | 本文評論計算架空輪電線頻變阻抗的三種主要方法:卡森法、複數深度法及有限元素法。本文除了討論這三種方法的理論基礎與數學模型,對這三種方法演進的歷史軌跡也略加著墨。 作者並以一 500 仟伏的架空輸電線為例,比較三種方法的計算結果。比較的結果顯示,複數深度法幾乎在所有的情況下都可以替代卡森法而不致引起太大的誤差;有限元素法雖然使用上較為複雜,計算時間也最長,但是可以計算在任何實際地形情況下的輸電線阻抗,可說是最具潛力的一種方法。 |
英文摘要 | This paper reviews the three most commonly used methods for calculation of frequency-dependent impedance of overhead transmission lines: Carson's method, the complex depth of earth return method and the finite element method. The historical path along which these methods were developed is also reviewed. This is followed by an illustrative example that compares the frequency-dependent impedances of a 500 kV transmission line calculated using the tree methods. It is concluded that the complex depth of earth return method can, in most cases, replace Carson's method without impairing the calculation accuracy, and that the finite element method, though more complicated and computationally more cumbersome, is capable of treating problems resulting from practical geometric allocation of transmission conductors and is a promising method for use in the near future. |
本系統中英文摘要資訊取自各篇刊載內容。