本文選題：金屬氧化物避雷器 + 諧波電壓��； 參考：《電子測量與儀器學報》2017年10期

【摘要】：泄漏電流阻性分量是金屬氧化物避雷器(MOA)在線監(jiān)測的重要指標,傳統(tǒng)的容性電流補償算法并未考慮諧波電壓的作用,對監(jiān)測結(jié)果產(chǎn)生很大的誤差。為解決該問題,利用電壓過零時避雷器阻性電流與容性電流的關系求解避雷器晶介電容C,并推導了諧波電壓下的容性電流補償系數(shù)G,提出了一種金屬氧化物避雷器在線監(jiān)測的諧波電壓校正方法,有效降低諧波電壓對阻性電流提取的影響,提高避雷器阻性電流的提取精度。MATLAB仿真結(jié)果表明,通過MOA在線監(jiān)測諧波校正方法,避雷器晶介電容C、基波阻性電流分量i_(R1)、3次諧波阻性電流分量i_(R3)誤差均≤10%,有效地減小諧波電壓給監(jiān)測結(jié)果帶來的影響,降低了阻性電流提取的誤差,提高了避雷器在線監(jiān)測結(jié)果的準確性。
[Abstract]:Leakage current resistive component is an important index for on-line monitoring of metal oxide arresters (MOA). The traditional capacitive current compensation algorithm does not consider the effect of harmonic voltage and has great error to the monitoring results. To address the problem, Based on the relationship between the resistive current and capacitive current of the arrester over 00:00 voltage, the dielectric capacitance of the arrester crystal is solved, and the compensation coefficient G of capacitive current under harmonic voltage is derived, and a kind of harmonics for on-line monitoring of metal oxide arrester is proposed. Wave voltage correction method, Effectively reduce the influence of harmonic voltage on resistance current extraction, improve the precision of arrester resistance current extraction. MATLAB simulation results show that the harmonic correction method is monitored by MOA on-line. The crystal dielectric capacitance (C) of the arrester and the fundamental wave resistive current component I _ (1) / I _ (1) are all less than 10 ~ (th), which can effectively reduce the influence of harmonic voltage on the monitoring results and reduce the error of the current extraction. The accuracy of the on-line monitoring results of the arrester is improved.
【作者單位】： 南京信息工程大學氣象災害預報預警與評估協(xié)同創(chuàng)新中心;南京信息工程大學中國氣象局氣溶膠與云降水重點開發(fā)實驗室;
【基金】：國家自然科學基金(61671248,41605121) 江蘇省高校自然科學研究重大項目(15KJA460008) 江蘇省“六大人才高峰”計劃 江蘇省“信息與通信工程”優(yōu)勢學科資助
【分類號】：TM862
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本文編號：1886473