• 作者： 黃慶連; 葉進純; 林清一; 鄭建隆
• 作者服務機構： 成功大學電機工程研究所
• 中文摘要： 當三相變壓器起始激能時，由於鐵心的磁通過飽和的現象，將造成過電流之暫態現象，它會引起保護電驛系統的誤動作，所以，對三相變壓器之激磁暫態電流的特性，值得去加以研究，因此，若能提出一數學模式來準確地加以預測暫態電流，則對系統的操作與保護會很有幫助。本文乃延伸自單相變壓器的方法，提出一簡單的數學模式，來探討三相變壓器過電流之暫態現象。對於三相變壓器不同的結構，如繞組的連接方式及負載狀況，均有詳加討論。最後，經比較測量值與模擬值，來驗證所提方法可以很簡單且有效地應用於三相變壓器組與外鐵式變壓器。
• 英文摘要： Measurements of transient inrush currents in three-phase transformers offer important data for powersystem operation and protection. Because three-phase transformers are more widely used in industrialapplications than are single-phase transformers, the inrush current of the three-phase transformer is worthyof investigation. Therefore, a method for accurately predicting transient inrush currents is useful in systemoperation and protection. This paper proposes a simple method, extended from single-phase transformers,to investigate three-phase transformer inrush currents Various structures of three-phase transformers,including winding connections and loading conditions,are discussed. The simulation results are comparedwith experimental results.The proposed method is simple and effective for transformer banks and a shell-type (five-limb) transformer.
• 中文關鍵字： transient; inrush current analysis; three-phase transformer; simulation; experiment
• 英文關鍵字： --