本文選題：行波 + 單相接地故障��； 參考：《中國電機工程學報》2016年08期

【摘要】：識別第2個反向行波來自于故障點反射波還是對端母線反射波是單端行波測距和行波測距式距離保護的關鍵。基于輸電線路單相接地故障的交叉透射現(xiàn)象,提出一種不受線路兩側母線結構影響的識別第2個反向行波的新方法。首先利用初始行波與第2個反向行波進行初步測距,判定故障區(qū)域;然后根據(jù)故障區(qū)域確定第2個反向行波的特征波對;最后根據(jù)第2個反向行波與其特征波對的極性關系判斷第2個反向行波的來源,若第2個反向行波與特征波對的極性相同,則為來自故障點的反射波;若極性相反,則為來自對端母線的反射波。大量EMTP仿真驗證了所提方法的可行性和有效性。
[Abstract]:The identification of the second reverse traveling wave from the fault point reflection wave or the opposite end bus reflection wave is the key to single end traveling wave location and traveling wave location type distance protection. Based on the cross-transmission phenomenon of single-phase grounding fault of transmission lines, a new method for identifying the second reverse traveling wave is proposed, which is independent of the bus structure on both sides of the transmission line. First, the initial traveling wave and the second reverse traveling wave are used to determine the fault area, and then the characteristic wave pair of the second reverse traveling wave is determined according to the fault area. Finally, according to the polarity relationship between the second reverse traveling wave and its characteristic wave pair, the source of the second reverse traveling wave is determined. If the polarity of the second reverse traveling wave and the characteristic wave pair is the same, it is the reflected wave from the fault point; if the polarity is opposite, Then the reflected wave from the opposite end bus. A large number of EMTP simulations verify the feasibility and effectiveness of the proposed method.
【作者單位】： 電力系統(tǒng)及發(fā)電設備控制和仿真國家重點實驗室(清華大學電機系);
【基金】：國家自然科學基金重大國際合作項目(51120175001)~~
【分類號】：TM862

【相似文獻】

相關期刊論文 前2條

1 徐青山;陳錦根;唐國慶;;計及模速差異與雜散電容的反向行波辨識[J];高電壓技術;2007年09期

2 ;[J];;年期

，

本文編號：1827100