【摘要】：針對(duì)行波故障測(cè)距技術(shù)中行波檢測(cè)準(zhǔn)確性和行波波速對(duì)測(cè)距精度的影響,提出一種新的雙端行波故障定位方法。首先,介紹了變分模態(tài)分解(Variational Mode Decomposition,VMD)和Teager能量算子(Teager Energy Operator,TEO)的特點(diǎn),并將VMD與TEO相結(jié)合應(yīng)用于故障行波波頭的檢測(cè)。其次,在雙端行波故障測(cè)距原理的基礎(chǔ)上,根據(jù)故障行波的傳播路徑,推導(dǎo)出一種不受行波波速和線路實(shí)際長(zhǎng)度變化影響的行波故障測(cè)距新算法。該算法不需要檢測(cè)行波反射波的波頭,測(cè)距原理簡(jiǎn)單。最后,通過EMTDC仿真驗(yàn)證方法的正確性和準(zhǔn)確性。大量的仿真結(jié)果表明該方法行波波頭檢測(cè)效果較好,測(cè)距準(zhǔn)確度較高。
[Abstract]:Aiming at the influence of traveling wave detection accuracy and traveling wave velocity on location accuracy in traveling wave fault location technology, a new dual-terminal traveling wave fault location method is proposed. Firstly, the characteristics of variational mode decomposition (Variational Mode DecompositionVMD) and Teager energy operator (Teager Energy operator (TEO) are introduced, and the combination of VMD and TEO is applied to the detection of fault wave heads. Secondly, on the basis of the principle of two-terminal traveling wave fault location, a new traveling wave fault location algorithm is derived based on the propagation path of the fault traveling wave, which is independent of the variation of the traveling wave velocity and the actual length of the line. This algorithm does not need to detect the wave head of traveling wave reflection wave, and the principle of ranging is simple. Finally, the correctness and accuracy of the method are verified by EMTDC simulation. A large number of simulation results show that this method has good detection effect and high ranging accuracy.
【作者單位】： 新能源電力系統(tǒng)國(guó)家重點(diǎn)實(shí)驗(yàn)室(華北電力大學(xué));河北工程大學(xué)水電學(xué)院;
【基金】：中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(2014xs74)~~
【分類號(hào)】：TM75

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