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Tsallis小波包奇异熵与功率谱分析在电力谐波检测的应用

, PP. 193-199

Keywords: 电力系统,非广延性,小波熵,功率谱密度

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Abstract:

针对Shannon小波能量熵在电力谐波检测过程中的局限性,提出一种基于Tsallis小波包奇异熵与功率谱(PSD)分析结合的电力谐波检测新方法。从Shannon熵和Mallat算法理论入手,论证Shannon小波能量熵在电力谐波复杂度表征及频率辨析中存在的不足。在分析Tsallis熵与Shannon熵的区别与联系的基础上,将Tsallis非广延熵理论和小波包算法结合,构造具有非广延性的Tsallis小波包奇异熵。根据Tsallis小波包奇异熵对电力谐波复杂度的表征结果,对谐波信号进行分段PSD分析。理论分析及仿真结果证明该方法在正确表征电力谐波复杂度的同时,能对电力谐波的具体频率和功率进行具体量化。

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