Resumen

DE CASTRO, Rosa  y  DIAZ, Horacio. ESTABILIDAD DE TENSIÓN EN EL CORTO PLAZO: FENÓMENO, ANÁLISIS Y ACCIONES DE CONTROL. Rev. Fac. Ing. - Univ. Tarapacá [online]. 2002, vol.10, pp.11-21. ISSN 0718-1337.  http://dx.doi.org/10.4067/S0718-13372002001000003.

This paper describes, analyses and simulates short-term voltage stability phenomenon. A didactic approach is used for the analysis, utilizing a small test system, providing a detailed description of the methodological procedures, as well as complete dynamic models of components and equipment used. The study of the short term dynamics of the system is done using Simulink. This implies considering the effect of different reactive control alternatives, such as the use of a capacitor bank, static voltage controller and a synchronous compensator. Besides, load shedding is applied to avoid voltage collapse. The dynamic analysis demonstrates that switching time of reactive power compensation is critical. In particular, the synchronous compensator dynamics is the best of the alternatives analysed, but this also represents a higher cost. On the contrary, the capacitor bank is a less expensive choice, but its effectiveness highly depends on the switching time. As for the load shedding, this is more effective, the sooner it is done. Better results are achieved when load shedding is applied to inductive engines.

Palabras clave : Voltage stability; reactive power compensation; dynamic simulation.

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