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Información tecnológica

versión On-line ISSN 0718-0764

Resumen

CORREA, Rosa E  y  COLLADO, Joaquín. Instability of Voltage in Power Systems. Inf. tecnol. [online]. 2006, vol.17, n.6, pp.147-155. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642006000600022.

The objective of the present study is to take advantage of the periodic nature of voltages and currents, and consider unbalanced loads in carrying out an improved dynamic analysis of voltage in power systems. The dynamic analysis of the voltage stability has been based on reduced models which use Park's transformation. The result is a biphasic model of a synchronous generator for which it is supposed there is balanced load and non-periodic signals. For this, a periodic model of a synchronous generator was selected. This model allowed experimentation with more "natural" loads such as resistances, inductors, and switched inductors which represent the controllers of modern motors. Resonance in the presence of commutated loads was detected with the support of V-P curves, and adverse effects were demonstrated in the power system in the presence of unbalanced loads.

Palabras clave : voltage instability; harmonics; non linear systems; resonance.

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