基于固有模態(tài)能量的配電網(wǎng)故障預(yù)警方法
毛厚鐘1，鄭敏楊2
（1 國網(wǎng)寧德供電公司，福建 寧德 352000；
2 福州大學(xué) 電氣工程與自動(dòng)化學(xué)院，福建 福州 350108）
摘 要：為提高電網(wǎng)供電可靠性，提出了一種故障預(yù)警方法，通過判斷故障類型，監(jiān)測(cè)出瞬時(shí)性故障時(shí)進(jìn)入預(yù)警，將母線零序電壓和各線路零序電流的監(jiān)測(cè)值進(jìn)行固有模態(tài)能量計(jì)算，超過預(yù)警值時(shí)發(fā)出警告，提示工作人員進(jìn)行檢修。經(jīng)仿真數(shù)據(jù)和實(shí)際數(shù)據(jù)計(jì)算驗(yàn)證，證明了該故障預(yù)警方法的可行性。
關(guān)鍵詞：配電網(wǎng)；選線；單相接地；故障預(yù)警
中圖分類號(hào)：TM711；TM726 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1007-3175(2016)08-0019-06
Distribution Network Fault Early Warning Method
Based on Intrinsic Mode Energy
MAO Hou-zhong1, ZHENG Min-yang2
（1 State Grid Ningde Electric Power Supply Company, Ningde 352000, China;
2 College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108, China）
Abstract: In order to improve the reliability of power supply, this paper presented a kind of fault early warning method. Through the judgment of fault type, instantaneous fault turned into the status of fault early warning. The zero sequence voltage and the zero sequence current of each line were input to calculate the intrinsic mode energy. If the value was more than the early warning value, the personnel were remaindered to examine and repair the module. After the calculation of simulation data and actual engineering data validation, this fault early warning method is proved to be feasible.
Key words: distribution network; line selection; single-phase grounding; fault alarm
參考文獻(xiàn)
[1] 陳文建.10 kV配電網(wǎng)單相接地故障選線定位方案的原理與實(shí)現(xiàn)[D]. 合肥：中國科學(xué)技術(shù)大學(xué)，2004.
[2] 劉浩宇. 中低壓配電網(wǎng)單相接地故障選線方法研究[J]. 科技創(chuàng)新導(dǎo)報(bào)，2010(11)：71-72.
[3] 尚爾發(fā)，李曉琦，楊德友，等. 基于HHT的中性點(diǎn)經(jīng)消弧線圈接地配電網(wǎng)故障選線研究[J]. 黑龍江電力，2009，31(2)：145-147.
[4] HUANG N E, SHEN Z, LONG S R, et al.The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis[C]//Proceedings of the Royal Society A Mathematical Physical Engineering Sciences，1998.
[5] 杜輝. 基于固有模態(tài)能量的暫態(tài)量選線方法研究[D]. 西安：西安科技大學(xué)，2013.
[6] PERERA N, RAJAPAKSE A D.Series-Compensated Double-Circuit Transmission-Line Protection Using Directions of Current Transients[J]．IEEE Transactions on Power Delivery，2013，28(3)：1566-1575.
[7] 王偉，焦彥軍. 暫態(tài)信號(hào)特征分量在配網(wǎng)小電流接地選線中的應(yīng)用[J]. 電網(wǎng)技術(shù)，2008，32(4)：96-l00.
