| Hilbert-Huang变换在电力系统暂态信号分析中的应用 |
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| 引用本文： | 聂永辉,高磊,唐威.Hilbert-Huang变换在电力系统暂态信号分析中的应用[J].电力系统及其自动化学报,2009,21(4). |
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| 作者姓名： | 聂永辉 高磊 唐威 |
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| 作者单位： | 东北电力大学教务处,吉林,132012;中国电力科学院系统所,北京,100092;山东电网公司烟台电业局,烟台,265500 |
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| 摘 要： | 以一种全新的非线性信号分析方法——Hilbert-Huang变换(Hilbert-Huang transform,HHT)为基础,将其应用于电力系统暂态信号方面的研究。该方法利用经验模态分解法EMD(empirical mode decompo-sition)将暂态信号分解成有限个固有模式函数IMF(intrinsic mode function),从而根据Hilbert变换求出每一个固有模式函数瞬时频率和瞬时幅值,对电力系统暂态信号进行分析。仿真和实例分析结果均表明,该方法具有很强的自适应能力,应用于电力系统暂态信号分析方面具有可行性、有效性。
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| 关 键 词： | Hilbert-Huang变换 电压闪变 局部放电 暂态信号 |
Application of Hilbert-Huang Transform on Analysis of Transient Signal in Electric Power System |
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| NIE Yong-hui,GAO Lei,TANG Wei.Application of Hilbert-Huang Transform on Analysis of Transient Signal in Electric Power System[J].Proceedings of the CSU-EPSA,2009,21(4). |
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| Authors: | NIE Yong-hui GAO Lei TANG Wei |
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| Affiliation: | 1.Academic Administration;Northeast DIanli University;Jilin 132012;China;2.Xitong Institution;China Electric Power Research Institute;Beijing 100092;3.Yantai Power Supply Bureau;Shandong Electric Net Company;Yantai 265500;China |
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| Abstract: | On the basis of a novel nonlinear signal processing method called Hilbert-Huang transform,this paper studies the power system transient signal in electric power system.The transient signal can be decomposed into a finite number of intrinsic mode functions by the empirical mode decomposition.Then the instantaneous parameter and frequency of each IMF will be acquired according to Hilbert transform.The results of simulation indicate the method is feasible and effective. |
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