基于近似熵和混沌振子的电力谐波检测与估计

王慧武; 于宁; 丛超

王慧武,于宁,丛超.基于近似熵和混沌振子的电力谐波检测与估计[J].电测与仪表,2016,53(18):.
WANG Hui-wu,YU Ning,CONG Chao.Detection And Estimation of The Harmonics in Power System By Using Approximate Entropy and Chaotic Oscillator[J].Electrical Measurement & Instrumentation,2016,53(18):.

基于近似熵和混沌振子的电力谐波检测与估计

Detection And Estimation of The Harmonics in Power System By Using Approximate Entropy and Chaotic Oscillator

DOI：

中文关键词: 电力系统谐波检测参数估计混沌振子近似熵

英文关键词:power system harmonics detection parameters estimation chaotic oscillator approximate entropy

基金项目:

作者中文名	作者英文名	单位
王慧武	WANG Hui-wu	哈尔滨电工仪表研究所
于宁	YU Ning	国网大连供电公司
丛超	CONG Chao	哈尔滨电工仪表研究所

摘要点击次数: 2001

中文摘要:

本文首次尝试将近似熵测度与基于混沌振子的信号检测方法相结合,以解决电力系统谐波检测与估计领域现存的技术难题。通过理论分析和仿真研究,证明了适应步长型间歇混沌振子的系统输出近似熵值,只与待测信号的频率有关,而且不同相态下的系统输出近似熵值具有明显差异,进而提出了一种采用近似熵测度的适应步长型间歇混沌振子,并说明了此方法对电力系统谐波、间谐波检测和频率估计的适用性。在此基础上,还对一种基于Duffing系统的正弦信号幅值和相位同步估计方法进行了改进,降低了原方法的复杂度并提高了实时性,并用以实现对谐波和间谐波的幅值、相位同步高精度估计。

英文摘要:

In order to solve the technology problems in the field of power system harmonics detection and estimation, this paper attempts to combine the approximate entropy measure and the chaotic oscillator firstly. Basing on the theoretical analysis and the simulation research, this paper proved that the output approximate entropy of the adaptive-step-length intermittent chaotic oscillator is just relevant to the frequency of the signals to be detected. Furthermore this paper proposed the intermittent chaotic oscillator with the approximate entropy measurement, and described the applicability ofSthis new method to the harmonics detection. Besides improve a synchronization estimation method of the amplitude and phase, make the method complexity lower and the real-time performance better.

查看全文查看/发表评论下载PDF阅读器

关闭