Detection and Improvement of Power Quality Disturbances using Wavelet Transform with Noise-Suppression Method
Journal Title: INTERNATIONAL JOURNAL OF ENGINEERING TRENDS AND TECHNOLOGY - Year 2012, Vol 3, Issue 4
Abstract
Recently power quality has become one of the most important issues in modern power industry. The origin of events which affect quality of power is mainly electromagnetic transients, harmonic distortion in addition to voltage sag, swell, flicker, and other power quality disturbances that proliferate in modern electric power grids. The WT is offering a large variety of potential bases, where optimization can be further performed.In the WT applications the process often confuses the transient signals and the noises ride on the signals. Consequently, the threshold is difficult to give in detecting the existence of transient signals. To eliminate the difficulty of distinguishing the signals from the noises existing in the Wavelet Transform Coefficients (WTCs) of the signals, a denoising algorithm is presented to suppress the noise riding on the signals. To further improve the disturbance detection rate by more effectively discriminating the signals from the noises after the DWT, a spatial-correlationbased noise-suppression algorithm is proposed in this paper.This work describes the techniques of correcting the supply voltage sag, swell in a distributed system. At present, a wide range of very flexible controllers, which capitalize on newly available power electronics components, are emerging for custom power applications. Among these, the distribution static compensator is the most effective devices. A D-STATCOM injects a current into the system to correct the voltage sag, swell. Comprehensive results are presented to assess the performance of device as a potential custom power solution.
Authors and Affiliations
N. V. H. Ravikumar1 ,Dr. CH. Sai Babu2 , K. Durga Syam Prasad3
Keywords
Related Articles
- EP ID EP156524
- DOI -
- Views 129
- Downloads 0
Comparison Of Compressive Strength Of Medium Strength Self Compacted Concrete By Different Curing Techniques
In this paper variation in compressive strength of medium strength, self-compacted concrete with 3 different curing techniques is discussed. Initially several trials were carried out for mix design of medium streng...
Optimization of Tribological Performance of Al6061T6/15% SiC/15% Al2O3/10% Graphite HMMC using Taguchi Method and Grey Relational Analysis
Optimization of tribological performance parameters of Al-6061T6 alloy reinforced with SiC, (Al2O3) 15% and graphite particulates of weight percentage of 10%. The wear and frictional properties of the hybrid metal matrix...
A Class Based Approach for Medical Classification of Chest Pain
This paper focuses on class based data mining algorithm and their use in medical applications. Data mining techniques have been used in medical research for many years and have been known to be effective. In order...
Thermal and Structural Analysis of Disc Brake for Different Cut Patterns
The thermal performance & heat dissipation of brake disc is based on aerodynamic characteristics of flow though brake disc holes. In this project, the cooling performance of two wheeler brake disc is analyzed by usin...
Analytical Performance of LDPC Codes with OC in the Presence of Interferers
Optimum Combining (OC) with Low Density Parity-check (LDPC) code improves the performance of overall system (LDPC-OC) by providing additional coding gain. Using Gaussian approximation (GA) approach the bit error rate of...