本文選題：桿塔 + 故障定位�。� 參考：《電力系統(tǒng)自動(dòng)化》2014年05期

【摘要】：為解決傳統(tǒng)基于行波自然頻率的單端故障測(cè)距方法在單相或遠(yuǎn)距離故障時(shí)測(cè)距精度不高的問題,提出了一種基于行波自然頻率的桿塔故障定位新方法,該方法對(duì)主自然頻率辨識(shí)精度不敏感,具備較好的抗差性能,提高了單相或遠(yuǎn)距離故障情況下的測(cè)距效果。通過辨識(shí)線路兩端故障電流中的主自然頻率值,并根據(jù)行波主自然頻率值與故障距離間的倒數(shù)關(guān)系,由線路兩端的主自然頻率值之比,確定故障距離占線路全長的比例。仿真結(jié)果表明,所述方法故障定位精度高、穩(wěn)定性好,定位結(jié)果不受季節(jié)、弧垂變化及故障距離和故障類型的影響,利于實(shí)際現(xiàn)場(chǎng)中故障位置的查找。
[Abstract]:In order to solve the problem that the accuracy of single terminal fault location based on traveling wave natural frequency is not high in single phase or long distance fault location, a new method of pole and tower fault location based on traveling wave natural frequency is proposed. This method is insensitive to the identification accuracy of the main natural frequency and has better robust performance. It improves the location effect in the case of single phase or long distance fault. By identifying the main natural frequency of the fault current at both ends of the line and according to the reciprocal relation between the main natural frequency of the traveling wave and the fault distance, the proportion of the fault distance to the total length of the line is determined by the ratio of the main natural frequency value at the two ends of the line. The simulation results show that the method has high accuracy and good stability, and the location results are not affected by season, sag variation, fault distance and fault type, which is conducive to finding fault location in actual field.
【作者單位】： 武漢大學(xué)電氣工程學(xué)院;深圳供電局有限公司;
【分類號(hào)】：TM753

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本文編號(hào)：2086875