本文選題：高壓直流輸電　切入點(diǎn)：線路　出處：《電力自動化設(shè)備》2017年04期 　論文類型：期刊論文

【摘要】：為了解決高壓直流輸電線路極間耦合引起的問題,提出了一種利用單極電氣量的故障選極方案。耦合特性分析發(fā)現(xiàn)線路極間耦合程度與電氣量的頻率有關(guān),且頻率越高則耦合作用越顯著。故障電氣量頻譜特性理論分析及仿真結(jié)果表明健全極電氣量中低頻信號含量遠(yuǎn)低于故障極。基于健全極與故障極低頻信號差異,提出了僅利用單極電氣量的故障極選擇方法,并給出了故障選極判據(jù)。仿真結(jié)果及現(xiàn)場錄波數(shù)據(jù)均驗(yàn)證了所提選極方法的可行性及有效性。
[Abstract]:In order to solve the problem caused by the coupling between poles of HVDC transmission lines, a fault pole selection scheme using unipolar electrical quantities is proposed. The coupling characteristics analysis shows that the coupling degree between the poles of the lines is related to the frequency of the electrical quantities. And the higher the frequency, the more significant the coupling effect is. The theoretical analysis and simulation results show that the low frequency signal content of the sound pole electric quantity is much lower than that of the fault pole. Based on the difference between the perfect pole and the fault extreme low frequency signal, A fault pole selection method using only unipolar electrical quantities is proposed and the criterion of fault pole selection is given. The simulation results and field recording data verify the feasibility and effectiveness of the proposed method.
【作者單位】： 西安交通大學(xué)電氣工程學(xué)院;中國電力科學(xué)研究院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51477131) 國家電網(wǎng)公司科技項(xiàng)目(XT71-15-049,SGSNKYOOKJJS1501564)~~
【分類號】：TM75

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