A New Digital Filter for Identification of Symmetrical Components in Power System
| Autor: | A. K. Al-Othman, K. M. El-Naggar |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Engineering
State-space representation business.industry Mechanical Engineering Energy Engineering and Power Technology Particle swarm optimization Symmetrical components Electric power system Three-phase Control theory Line (geometry) Electronic engineering Electrical and Electronic Engineering business Digital filter Block (data storage) |
| Zdroj: | Electric Power Components and Systems. 35:153-168 |
| ISSN: | 1532-5016 1532-5008 |
| DOI: | 10.1080/15325000600891101 |
| Popis: | This article presents a novel algorithm for identifying and measuring the symmetrical components of three phase voltage or current waveforms in electrical power systems. The problem is formulated as an estimation problem and presented in state space form. A particle swarm optimization (PSO) is employed to minimize the error associated with the estimated parameters. The proposed algorithm is used to estimate the positive, negative and zero components of unsymmetrical waveforms. Application of the proposed algorithm has been conducted on various test cases, among which a practical simulated power system has been implemented in Simulink using its power system block set. Various abnormal scenarios were carried out (such as line to ground, line to line to ground, as well as unbalanced load) in order to create realistic situation of unsymmetrical waveforms. Different factors affecting the identification process, such as data window size, sampling frequency, and the number of samples, are studied. Effec... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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