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Study of Morlet Complex Wavelet Based Phasor Estimation Algorithm for Traction Line
Author(s): 
Pages: 108-113
Year: Issue:  2
Journal: TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY

Keyword:  相量估算Morlet复小波故障测距牵引网;
Abstract: 牵引网故障前后稳态相量幅值和相位的估算对测距的精度有着至关重要的影响.提出了基于Morlet复小波的相量估算算法,由于采用具有较好频率特性的Morlet复小波,因此该算法的稳定性优于传统傅里叶算法,同时不受整次、非整次谐波及非周期衰减分量的影响,相量估算精度高,鲁棒性强.进一步讨论了各参数对算法性能的影响以及参数选择方法.最后将该算法应用于牵引网典型故障电流工频相量的提取,仿真分析表明其计算精度高,可充分满足测距的要求,因此有很高的工程实用价值.
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