考慮線路長度變化的T型線路行波測距
發(fā)布時間：2018-10-30 21:05
【摘要】：針對現(xiàn)有的T型行波故障測距算法不能適應(yīng)線路長度變化的問題,提出一種新的T型線路行波故障測距算法。該算法在T型線路故障測距方法的基礎(chǔ)上,利用三端計算故障發(fā)生的絕對時刻或者波速的大小關(guān)系來判斷故障是否發(fā)生在某一支路上,進(jìn)而計算故障點(diǎn)的距離�？紤]到線路長度變化的影響,給出了T節(jié)點(diǎn)附近故障時可能造成誤判的距離范圍。分支判別判據(jù)與測距表達(dá)式都充分用到了三端測量數(shù)據(jù),并在一定程度上消除了弧垂和線路長度變化對其帶來的誤差。EMTP仿真結(jié)果表明,該方法正確,且克服了線路長度變化的影響。
[Abstract]:Aiming at the problem that the existing T-type traveling wave fault location algorithms can not adapt to the variation of line length, a new T-type traveling wave fault location algorithm is proposed. Based on the fault location method of T-type line, the algorithm calculates the absolute time of fault occurrence or the relationship of wave velocity between three terminals to determine whether the fault occurs on a certain road, and then calculates the distance of fault point. Considering the influence of the line length variation, the range of the possible misjudgment distance caused by the fault near T node is given. Both the branch discrimination criterion and the ranging expression are fully used in the three-terminal measurement data, and the error caused by the sag and the variation of the line length is eliminated to some extent. The EMTP simulation results show that the method is correct. It overcomes the influence of line length variation.
【作者單位】： 華北電力大學(xué)電氣與電子工程學(xué)院;冀北電力公司檢修分公司;
【基金】：中央高�；究蒲袠I(yè)務(wù)費(fèi)專項資金資助項目(2014xs74)~~
【分類號】：TM75
[Abstract]:Aiming at the problem that the existing T-type traveling wave fault location algorithms can not adapt to the variation of line length, a new T-type traveling wave fault location algorithm is proposed. Based on the fault location method of T-type line, the algorithm calculates the absolute time of fault occurrence or the relationship of wave velocity between three terminals to determine whether the fault occurs on a certain road, and then calculates the distance of fault point. Considering the influence of the line length variation, the range of the possible misjudgment distance caused by the fault near T node is given. Both the branch discrimination criterion and the ranging expression are fully used in the three-terminal measurement data, and the error caused by the sag and the variation of the line length is eliminated to some extent. The EMTP simulation results show that the method is correct. It overcomes the influence of line length variation.
【作者單位】： 華北電力大學(xué)電氣與電子工程學(xué)院;冀北電力公司檢修分公司;
【基金】：中央高�；究蒲袠I(yè)務(wù)費(fèi)專項資金資助項目(2014xs74)~~
【分類號】：TM75
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 束洪春,司大軍,葛耀中,陳學(xué)允;T型輸電線路電弧故障測距時域方法研究[J];電工技術(shù)學(xué)報;2002年04期
2 董新洲,葛耀中,徐丙垠,陳平,李京;利用GPS的輸電線路行波故障測距研究[J];電力系統(tǒng)自動化;1996年12期
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