【摘要】：車載式局部放電超高頻檢測(cè)裝置能夠?qū)Τㄩ_式變電站內(nèi)所有高壓設(shè)備進(jìn)行局部放電監(jiān)測(cè)與定位,及時(shí)排除故障,維持電網(wǎng)安全穩(wěn)定運(yùn)行。針對(duì)超高頻局部放電檢測(cè)定位準(zhǔn)確度低的難點(diǎn),提出了復(fù)小波變換濾波降噪結(jié)合高階累積量的敞開式變電站局部放電超高頻信號(hào)定位算法,在保留信號(hào)的幅值和相位特征下最大程度去除噪聲干擾,基于仿真分析了結(jié)合高階累積量計(jì)算了局部放電信號(hào)的時(shí)延,結(jié)果表明該方法有效提高了時(shí)延的計(jì)算準(zhǔn)確度及定位準(zhǔn)確性。現(xiàn)場(chǎng)應(yīng)用表明該方法能有效計(jì)算超高頻信號(hào)的時(shí)延,對(duì)局部放電位置實(shí)現(xiàn)空間定位,具有較強(qiáng)的可靠性與實(shí)用性。
[Abstract]:The vehicle-borne partial discharge ultra-high frequency (UHF) detection device can monitor and locate all the high voltage equipments in the open substation, remove the faults in time, and maintain the safe and stable operation of the power network. Aiming at the difficulty of low localization accuracy in UHF PD detection, a novel UHF location algorithm based on complex wavelet transform filter combined with high order cumulants is proposed. With the amplitude and phase characteristics of the reserved signal, the noise interference is removed to the maximum extent. Based on the simulation analysis, the delay of partial discharge signal is calculated by combining the high-order cumulant. The results show that this method can effectively improve the accuracy of time delay calculation and location. The field application shows that this method can effectively calculate the time delay of UHF signal and realize the spatial location of partial discharge. It has strong reliability and practicability.
【作者單位】： 廣東電網(wǎng)公司電力科學(xué)研究院;武漢銳特星科技有限公司;
【分類號(hào)】：U463.6;TM76

【參考文獻(xiàn)】

相關(guān)期刊論文 前5條

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本文編號(hào)：2197176