摘要
提出一种新的信号分析算法,得到一个二维线性常系数微分动力系统,给出该系统的解的解析表达式,说明该系统的暂态是一致渐近稳定的,稳态具有良好的幅值频率响应及频率选择特性。分析系统参数对稳态性能和暂态性能的影响,给出稳态和暂态频率响应。通过调整2个系统参数,可实现任意频点和任意带宽的线性滤波器。通过仿真,用该算法实现锯齿波跟随、基波提取和谐波分析、间谐波分析、电压峰值检测、电压闪变检测,并研究算法对输入信号频率偏移的鲁棒性。
A new algorithm for real-time signal analysis in power system is presented, which is a two-dimension linear ordinary dynamic system. The analytic solution of this system is brought forward. The system is uniformly asymptotically stable in transient state, while has accurate response and good fiequency selection in stable state. The effects of parameters on performances in transient and stable state, with response curve of frequency response, are provided. A linear filter of arbitrary frequency with arbitrary bandwidth can be available by adjusting two parameters. The simulations of this algorithm are enumerated in following instances： track of saw-tooth wave, fundamental and total harmonic analysis, inter-harmonic detection, peak detection, and detection of flicker of voltage. The response to offset of input frequency is also illustrated.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2009年第1期94-99,共6页
Proceedings of the CSEE
关键词
线性滤波器
谐波/间谐波分析
峰值检测
闪变
检测
鲁棒性
linear filter
harmonic/inter-harmonic analysis
peak detection
flicker detection
robustness
