【摘要】：為研究輸電線路雷擊定位,結(jié)合工程實際需求,在非接觸式雷電流在線監(jiān)測系統(tǒng)基礎(chǔ)上建立了基于行波理論的新型輸電線路雷擊定位方法。該方法在傳統(tǒng)單端法、雙端法的基礎(chǔ)上進行改進,以不受波速影響。首先根據(jù)首波前到達時間和極性確定雷擊范圍;再通過分析反射波前極性,確定不同波前到達監(jiān)測點的依次順序;最后利用小波變換提取相應(yīng)波前到達時間進行定位計算。經(jīng)EMTP-ATP軟件仿真驗證,相比較傳統(tǒng)測距法而言,該研究提出的新型雷擊定位方法精確度更高,誤差均0.5%;同時改進型雙端法定位計算誤差均0.3%,比改進型單端法誤差更小,更適用于實際應(yīng)用。根據(jù)非接觸式輸電線路雷電流監(jiān)測系統(tǒng)獲得的實測數(shù)據(jù),進行了初步雷擊定位,進一步驗證了該方法的實用性。
[Abstract]:In order to study the lightning location of transmission lines, a new lightning location method based on traveling wave theory was established on the basis of non-contact lightning current on-line monitoring system. This method is improved on the basis of traditional single end method and double end method to avoid the influence of wave velocity. First, the lightning strike range is determined according to the arrival time and polarity of the first wave front; then the sequence of different wave front arrival points is determined by analyzing the reflected wave front polarity; finally, the corresponding arrival time of the wave front is extracted by wavelet transform to calculate the location. Compared with the traditional ranging method, the new lightning location method proposed in this paper has a higher accuracy than the traditional ranging method, and the errors are 0.5. At the same time, the error of the improved two-terminal method is 0.3, which is less than that of the improved single-terminal method, and is more suitable for practical application. Based on the measured data obtained from the non-contact transmission line lightning current monitoring system, the preliminary lightning location is carried out, and the practicability of the method is further verified.
【作者單位】： 云南電力試驗研究院(集團)有限公司電力研究院;重慶大學(xué)輸配電裝備及系統(tǒng)安全與新技術(shù)國家重點實驗室;
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃(973計劃)(2009CB724504) 國家自然科學(xué)基金(51177176) 云南電力公司科技基金(K-YN2012-200)~~
【分類號】：TM863

【參考文獻】

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本文編號：2377950