| 基于小波滤波和跟踪微分器的介质损耗因数检测方法 |
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| 引用本文： | 李天云,范夕庆,汪剑波,余志飞.基于小波滤波和跟踪微分器的介质损耗因数检测方法[J].电网技术,2011(4). |
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| 作者姓名： | 李天云 范夕庆 汪剑波 余志飞 |
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| 作者单位： | 东北电力大学电气工程学院; |
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| 摘 要： | 提出了一种新的介质损耗因数检测方法,将电压与电流信号经过小波滤波得到基波分量,利用跟踪微分器求得电压的一阶微分信号,再根据电压信号、电流信号和电压一阶微分信号计算介质损耗因数。仿真结果表明:该算法物理意义明确、计算简单、测量结果精确,可用于介质损耗因数的离线测量与在线监测。
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| 关 键 词： | 小波滤波 跟踪微分器 介质损耗因数 线性拟合 |
A Method to Detect Dielectric Loss Factor Based on Wavelet Filtering and Tracking Differentiator |
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| LI Tianyun,FAN Xiqing,WANG Jianbo,YU Zhifei.A Method to Detect Dielectric Loss Factor Based on Wavelet Filtering and Tracking Differentiator[J].Power System Technology,2011(4). |
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| Authors: | LI Tianyun FAN Xiqing WANG Jianbo YU Zhifei |
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| Affiliation: | LI Tianyun,FAN Xiqing,WANG Jianbo,YU Zhifei(School of Electrical Engineering,Northeast Dianli University,Jilin 132012,Jilin Province,China) |
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| Abstract: | In this paper a new method to detect dielectric loss factor is given,which applies wavelet filtering to voltage and current signals to obtain their fundamental components,then tracking differentiator is used to attain first-order differential of voltage signal,finally,according to voltage signal,current signal and first-order differential of voltage signal the dielectric loss factor can be calculated.Simulation results show that the proposed algorithm possesses determinate physical meaning,the calculation i... |
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| Keywords: | wavelet filtering tracking differentiator dielectric loss factor linear fitting |
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