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Details van artikel 160 van 197 gevonden artikelen
| Titel: |
SOLUTIONS INCORPORATING MAGNETIC HYSTERESIS TO THE SUBHARMONIC PROBLEM IN POWER SYSTEMS |
| Auteur: |
Shobair, Ahmed I. A. Chowdhury, Badrul H. |
| Verschenen in: |
Electric power components & systems |
| Paginering: | Jaargang 17 (1989) nr. 6 pagina's 315-328 |
| Jaar: |
1989 |
| Inhoud: |
One possibility of taking care of the subharmonics in high speed protection is to filter the fundamental frequency components from the fault transients and use them for fault detection and discrimination. This is correct only if the phases and amplitudes of fundamental components during and post-subharmonic periods remain the same in transient waveforms. An attempt is therefore made to establish this aspect by a detailed study of a typical electrical network presenting subharmonics. The Dual Input Describing Function is adopted to show the subharmonic boundaries and the influence of system parameters on subharmonic oscillations. Magnetic hysteresis is incorporated in the analysis. A fifth order nonlinearity and one-third subharmonic are assumed. The theory could be easily extended to any order of nonlinearity and to any subharmonic frequency and also to a combination of subharmonics. The analysis gives a set of nonlinear algebraic equations. These equations are solved by Newton's technique using a digital computer. The solution gives a direct indication of the system susceptibility to subharmonics. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 160 van 197 gevonden artikelen
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