Performance Comparison of Power Quality Evaluation Using Advanced High Resolution Spectrum Estimation Methods
Journal Title: IOSR Journals (IOSR Journal of Electrical and Electronics Engineering) - Year 2017, Vol 12, Issue 1
Abstract
Most of the conventional methods of power quality assesment in power systems are almost exclusively based on Fourier Transform that suffer from various inherent limitations. First limitation of an FFT based method is that of frequency resolution, whereas the second limitation is due to no coherent signal sampling of the data which proves itself as a leakage in spectrum domain. These two performance limitations of FFT or similar methods are particularly troublesome when analyzing short data records. To overcome from this problem, high regulation spectrum estimation methods can be used where resolution problem is not found. In this thesis, high resolution methods, such as MUSIC, root MUSIC and ESPRIT are discussed that use a different approach to spectral estimation; instead of trying to estimate the power spectral density (PSD) directly from the data, they model the data as the output of a linear system driven by white noise, and then attempt to estimate the parameters of that linear system. Detail Matlab simulations are carried out in order to investigate the performance of MUSIC, Root MUSIC and ESPRIT methods in estimating amplitude, power (squared amplitude) and frequency estimation of synthetic power signal both in clean and noisy conditions. Using mean square error (MSE) as the evaluation criterion, the variation of amplitude, power (squared amplitude) and frequency estimation are shown with respect to data sequence length and SNR and their influences on MSE are compared for the different methods as mentioned above.
Authors and Affiliations
Md. Ziaul Hoque, Md. Raju Ahmed
Keywords
Related Articles
- EP ID EP389009
- DOI 10.9790/1676-1201015767.
- Views 126
- Downloads 0
Six Phase Induction Motor Modelling For Submarine Application
Research in electrical machine design is tilting towards multiphase systems, due its numerous advantages. As the quest for energy efficient systems increases, research in this regard also increases. Mostly in the area of...
Adaptive Cruise Control for vechile modelling using MATLAB
This paper proposes the P, PI, PID, IPDcomparison and analysis for full range of Adaptive Cruise Control System (ACC). ACC is the facultative cruise control for the vehicles that automatically adjusts the vehicle speed t...
Analysis and comparison of different PV technologies for determining the optimal PV panels- A case study in Mohammedia , Morocco.
This study focuses on the analysis and comparison of three different photovoltaic technologies of silicon module: Amorphous silicon (a-Si), polycrystalline silicon (pc-Si) and monocrystalline silicon (mc-si) with 2 KWp f...
Water Wave Optimization Algorithm for solving Thermal Unit Maintenance Scheduling
Maintenance scheduling of generating units is considered one of the vital power system problem for providing power in a reliable and economic way. In order to improve the overall availability of the generating units, cha...
Modeling And Simulation of Loads Into Existing Distribution Network System Using MATLAB/Simulink
This paper presents the detail model of load and other devices in distribution network systems (DNS). Simulation and modeling is done using MATLAB/Simulink software package. The proposed model is user friendly and can be...