Resumen

GALLEGO LANDERA, Yandi; VALCARCEL ROJAS, Ángel; LIMONTE RUIZ, Alberto  y  MARINO RIVERO, Adis Perla. Modelling large grounding systems to evaluate transient voltages. Energética [online]. 2014, vol.35, n.3, pp.183-192. ISSN 1815-5901.

In generating plants and substations spacious grounding systems with complex configuration as part of the protection system against lighting, are required. The current caused by an atmospheric discharge can cause high voltages in the signal cables located near the grounding systems. These transient voltages may be the reason for the occurrence of false signals, which can cause malfunctioning and of electronic instruments. The knowledge of maximum elevation of voltage between the grounding systems and the remote ground is required to determine protection against lightning. This paper proposes a methodology to analyze the transient behavior of grounding grid. The technique is based on considering the different segments of the ground grid as elements of transmission lines. For modeling the grounding systems behavior in its transient state faster, the MATLAB-Simulink software was used. The results were validated by comparing them with models based on the electromagnetic field theory published in the literature

Palabras clave : transient behavior; transmission lines; protection against lighting; grounding systems.

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