【摘要】：輸電線路延綿數(shù)千里,傳統(tǒng)人工巡線方式查找雷擊故障點(diǎn)費(fèi)時(shí)費(fèi)力。因此基于非接觸式雷電流測(cè)量裝置,結(jié)合行波測(cè)距和小波包理論,提出了一種新型分布式雷擊故障定位方法。根據(jù)三相電流行波極性差異,提出了繞擊、雷擊避雷線和桿塔的雷擊類(lèi)型識(shí)別方法;針對(duì)繞擊情況,進(jìn)行了雷擊是否閃絡(luò)的判斷、雷擊區(qū)間范圍和閃絡(luò)側(cè)的確定,推導(dǎo)了不同監(jiān)測(cè)區(qū)間段內(nèi)線路雷擊點(diǎn)和閃絡(luò)點(diǎn)定位公式;利用小波包變換提取行波波前到達(dá)時(shí)間進(jìn)行定位計(jì)算。經(jīng)EMTP-ATP軟件仿真驗(yàn)證,該方法能準(zhǔn)確地進(jìn)行輸電線路雷擊故障定位,雷擊點(diǎn)和閃絡(luò)點(diǎn)定位誤差均0.4%,具有重要的應(yīng)用價(jià)值。
[Abstract]:Transmission lines extend thousands of miles, the traditional manual inspection method to find the lightning fault point takes time and effort. Based on the non-contact lightning current measuring device and combining the traveling wave location and wavelet packet theory, a new distributed lightning fault location method is proposed. According to the polarity difference of three-phase current traveling wave, the identification method of lightning strike type of lightning protection line and tower is put forward, and the judgement of whether lightning stroke flashes, the range of lightning strike interval and the determination of flashover side are carried out. The location formulas of lightning strike point and flashover point in different monitoring interval are derived, and the arrival time of traveling wave front is extracted by wavelet packet transform to calculate the location. The simulation of EMTP-ATP software shows that this method can accurately locate the lightning strike fault of transmission line, and the location error of lightning strike point and flashover point are both 0.4, which has important application value.
【作者單位】： 重慶大學(xué)輸配電裝備及系統(tǒng)安全與新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室;南京供電公司;云南電力試驗(yàn)研究院(集團(tuán))有限公司電力研究院;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973計(jì)劃)(2009CB724504) 國(guó)家自然科學(xué)基金(51177176) 云南電力公司科技基金(K-YN2012-200)~~
【分類(lèi)號(hào)】：TM863

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本文編號(hào)：2122761