Hilbert-Huang变换及其在电力系统中的应用

摘要

HHT(Hilbert-Huang Transform) and the research on its end effect,mode mixing and sifting termination criterion are reviewed and the performance of HHT is discussed. Its present applications in power system are analyzed in detail,such as device fault detection and diagnosis,power system oscillations analysis, power quality analysis and load forecasting, and its future applications in power system are prospected. It is suggested that,the disadvantages of HHT can be solved by combining it with other methods,and according to the characteristics of power system,HHT will be more effectively applied in power system.%通过综述国内外Hilbert-Huang变换及其相关端点效应、模态混叠、筛分停止准则等问题的研究现状,讨论了该变换的特点.详细分析了Hilbert-Huang变换在电力系统设备故障检测与故障诊断、电力系统振荡分析、 电能质量检测和负荷预测等方面的应用现状.最后,对其在电力系统中的应用进行了展望,认为Hilbert-Huang变换可以联合其他方法克服本身缺点,并根据电力系统信号的特点,更有效地应用于电力系统.