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Details van artikel 5 van 9 gevonden artikelen
| Titel: |
LOCAL STABILIZATION OF A SINGLE MACHINE SYSTEM USING THE DIRECT NYQUIST ARRAY METHOD |
| Auteur: |
Hamdan, A. M. A. Elabdalla, A. M. |
| Verschenen in: |
Electric power components & systems |
| Paginering: | Jaargang 23 (1995) nr. 1 pagina's 1-11 |
| Jaar: |
1995-01-01 |
| Inhoud: |
There is a need to recast the results concerning the power system stabilizertion the new language of geometric nonlinear dynamics. This will serve to give a better insight into the success of these devices, and it will also highlight their limitations. It is shown in this paper that the power system stabilizer problem stems from a subcritical Hopf bifurcation that occurs in a detailed model of a single machine infinite busbar system that includes a fast exciter. As such the problem is posed as a local stabilization problem of a nonlinear model. This explains the reason why a linear design works to stabilize the nonlinear model on the basis of Liaponov's theorem of stability. It also emphasizes the need to consider the global features of the system by considering the full nonlinear model. The direct Nyquist array is used as a design methodology for evaluating measurable signals in the linearized model. We demonstrate the effectiveness of speed deviation, electrical torque and line current for stabilizing the linear model. The line current signal has not been considered in the literature previously, except that we proposed its use for stabilizing subsynchronous resonance. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 5 van 9 gevonden artikelen
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