Suzhou Electric Appliance Research Institute
期刊號: CN32-1800/TM| ISSN1007-3175

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混合線路故障測距新方法的研究

來源:電工電氣發(fā)布時間:2016-03-14 15:14 瀏覽次數(shù):4

混合線路故障測距新方法的研究 

邱宇青 
福建福清核電有限公司,福建 福清 350300 
 

摘 要:為解決應(yīng)用固有頻率測距法存在難以準(zhǔn)確提取固有頻率主成分的問題。提出了利用聚類經(jīng)驗?zāi)P头纸?EEMD)來實現(xiàn)故障測距的方法,利用EEMD進(jìn)行信號分解,對相關(guān)分量進(jìn)行頻譜分析和主成分提取,進(jìn)行故障測距計算。仿真分析表明,該方法可較好地解決混合線路故障測距時存在的頻譜混疊問題,實現(xiàn)較高精度的故障定位。
關(guān)鍵詞:混合線路;故障測距;固有頻率;頻譜混疊;EEMD方法
中圖分類號:TM755 文獻(xiàn)標(biāo)識碼:A 文章編號:1007-3175(2015)04-0023-04


Study on New Method of Fault Location for Hybrid Transmission Lines 

QIU Yu-qing 
Fujian Fuqing Nuclear Power Co., Ltd, Fuqing 350300, China 
 

Abstract: It is difficult to accurately extract main components of natural frequencies when the method based on natural frequencies used. This paper proposed to use the ensemble empirical mode decomposition (EEMD) method to realize fault location, decomposing the signals in EEMD, analyzing the spectra of the related components, extracting the main components and carrying out fault location calculation. The simulation analysis shows that the method could well solve the spectra aliasing problem in fault location, realizing fault location in high precision.
Key words: hybrid transmission line; fault location; natural frequencies; spectra aliasing; ensemble empirical mode decomposition algorithm


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