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題名 | Establishment and Analysis of High Efficient Power Transmission Line Model=高效能電力輸電線模型之建立與分析 |
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作者姓名(中文) | 余定中; | 書刊名 | 龍華科技大學學報 |
卷期 | 23 2007.09[民96.09] |
頁次 | 頁37-48 |
分類號 | 448.5 |
關鍵詞 | 線性內插法; pi電路修正; 積分時階; 電磁暫態模擬; Linear interpolation process; Pi-circuit correction; Integration time step; EMTP simulation; |
語文 | 英文(English) |
中文摘要 | 本文針對具有不同行進時間之理想輸電線提供一個新的方法,以解決其在即時電磁暫態模擬中所產生的問題。對電磁暫態模擬來說,於傳統具不同行進時間之架空線與電纜模型中,在計算某一時刻之數值時通常需應用到線性內插法來求得過去時刻之相關數據。本文將「pi電路修正」的觀念導入輸電線之模型中,使得在模域中輸電線每一模態之行進時間都相同,同時亦避免了線性內插法的使用。因此,在應用本文所提供之方法後,於即時之電磁暫態模擬中可使用較大的積分時階△t,而在不犧牲精確度的前提下,「pi電路修正」技術可以有效地節省下相當可觀的電腦模擬運算時間。 |
英文摘要 | This paper presented a time domain methodology to deal with the problem of different traveling times in the ideal line propagation for EMTP simulations. In traditional multiphase overhead line and cable models with different traveling times for the EMTP simulations, linear interpolation process was used to obtain the history information for current calculations. By introducing the concept of "pi-circuit correction" into EMTP models in this paper, it makes the traveling times of all modes identical to one another in the modal domain and avoids the usage of linear interpolation process. After using the proposed methodology, a much larger integration time step △t can be used in the EMTP simulations. Compared with the model using linear interpolation process, the proposed model shows good accuracy and shorter solution time. The algorithm presented in this paper results in considerable savings in computational time without sacrificing the accuracy, and therefore can improve and enhance the efficiency of the EMTP simulations. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。