使用里叶,短时间里叶,连续和离散波量变换来感知电源质量干扰
M S Priyadarshini1, Mohit Bajaj2,3,4,5, Lukas Prokop6
1Department of Electrical and Electronics Engineering, K. S. R. M. College of Engineering (Autonomous), Kadapa, 516005, India.
Scientific reports
|February 10, 2024
概括
这项研究比较了里叶,短时间里叶,连续波段和离散波段变换来分析电源质量干扰. 这些信号处理技术为电压和电流变化提供了不同的洞察力,有助于更好地监控电力系统.
科学领域:
- 电气工程 电气工程
- 信号处理 信号处理
- 电力系统 电力系统
背景情况:
- 恒定的电源供应和坚持电压范围对于电力公用事业来说至关重要,以防止设备故障.
- 电力质量 (PQ) 干扰,定义为电压或电流的变化,需要谨慎监控和管理.
- 信号处理方法对于分析电压干扰信号和在电力系统中检索重要信息至关重要.
研究的目的:
- 为了比较福里埃变换,短时间福里埃变换 (STFT),连续波段变换 (CWT) 和离散波段变换 (DWT) 在感知功率质量干扰方面的有效性.
- 使用MATLAB分析和可视化电源质量干扰.
- 为电力质量研究提供关于每个信号处理技术优缺点的见解.
主要方法:
- 使用富里埃转换来获取频率信息.
- 用于时间频率信息的雇员短时间里埃转换 (STFT).
- 应用连续波形变换 (CWT) 用于尺度-时间信号表示.
- 实现了离散波形变换 (DWT) 用于近似和细节系数,表示低频和高频.
主要成果:
- 使用基于MATLAB的可视化来比较每个转换的结果.
- 包括能量值和3D图表在内的比较分析阐明了结果.
- 该研究确定了每个信号处理技术在解释功率质量干扰方面的优缺点.
结论:
- 信号处理技术为理解电源质量干扰提供了多种领域.
- 转换的选择影响信号信息的解释,每个方法提供独特的见解.
- 研究结果有助于全面理解和实际应用信号处理用于电源质量分析.
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