Title :
Comparison of system impedance estimating methods
Author :
Liu, Bohan ; Jia, Ke
Author_Institution :
Dept. of Electr. & Electron. Eng., GGIMER Group, Univ. of Nottingham, Nottingham, UK
Abstract :
This paper introduces and compares three impedance estimation techniques: FFT, PSD and CWT. The impedance of proposed system is calculated by using the injected step current transient and the measured voltage response. Both steady and noisy situation is simulated by Matlab/Simulink and the characteristics of each impedance analyzing method are demonstrated by the achieved impedance results.
Keywords :
electric impedance measurement; fast Fourier transforms; wavelet transforms; CWT; FFT; Matlab; PSD; Simulink; impedance estimation method; injected step current transient; voltage response measurement; Continuous wavelet transforms; Impedance; Impedance measurement; Noise measurement; Power measurement; Power systems; Time frequency analysis; CWT; FFT; Impedance estimation; PSD;
Conference_Titel :
Advanced Power System Automation and Protection (APAP), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-9622-8
DOI :
10.1109/APAP.2011.6180788
