本文選題：UHVDC + 長距離輸電線路��； 參考：《高電壓技術(shù)》2017年07期

【摘要】：為解決長距離高壓直流(HVDC)輸電線路精確的故障測距問題,提出了一種基于多測點的行波測距方法。該方法是沿直流線路全線長范圍內(nèi)裝設(shè)以Rogowski線圈為核心的行波檢測單元,當(dāng)直流線路發(fā)生故障后,測距主站通過分析各個檢測點的故障行波波到時刻,實現(xiàn)故障區(qū)段的判別及錯標(biāo)時刻的剔除,并選其最鄰近的3個檢測點的波到時刻和其間對應(yīng)的線路長度來計算故障距離。結(jié)果表明:該測距計算無需引入經(jīng)驗波速和線路全長,可以緩解波速變化和線路全長不準(zhǔn)確所帶來的測距誤差。大量的測距仿真計算結(jié)果表明,通過多測點獲取的故障信息,可以提高長距離HVDC線路測距的精度和可靠性。研究結(jié)果證明了所提方法的有效性,可為特高壓直流(UHVDC)長距離輸電線路故障測距提供參考。
[Abstract]:In order to solve the problem of accurate fault location for long distance HVDC transmission lines, a traveling wave location method based on multiple measurement points is proposed. In this method, a traveling wave detection unit with Rogowski coil as the core is installed along the whole line of the DC line. When the DC line fails, the main station of the location arrives at the time by analyzing the fault wave of each detection point. The fault section can be judged and erased, and the fault distance can be calculated by selecting the wave arrival time and the corresponding line length of the three nearest detection points. The results show that the ranging error caused by the variation of the wave velocity and the inaccuracy of the line length can be alleviated without the introduction of the empirical wave velocity and the total length of the line. A large number of simulation results show that the accuracy and reliability of long distance HVDC line location can be improved by the fault information obtained from multiple measuring points. The results show that the proposed method is effective and can provide a reference for UHVDC long distance transmission line fault location.
【作者單位】： 昆明理工大學(xué)電力工程學(xué)院;國網(wǎng)河北省電力公司邢臺供電分公司;
【基金】：國家自然科學(xué)基金(51667010;U1202233;51267009) 云南省人培項目(KKSY20160428)~~
【分類號】：TM75

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相關(guān)期刊論文 前10條

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本文編號：2096159