Abstract
The aim of this paper is to present a grounding system modeling using a circuit network synthesized from its frequency response. This circuital representation allows simulating the grounding system in EMTP/ATP program considering its frequency dependent effects. Also, any electrical component may be included in the simulation, such as power system equipments or electronic devices.
The frequency response was obtained by means of both an electromagnetic model based on the moments method (MM) and a hybrid electromagnetic model (HEM). The results were compared with previous works and field measurements, finding a good agreement.
I. INTRODUCTION
THE transient behavior of grounding system influences greatly the performance of electrical systems under fault conditions. This fact has led the authors to present a modeling technique which represents the characteristic of the grounding system for a wide frequency range.
In the last years the research program on Acquisition and Analysis of Signals PAAS-UN is involved in grounding systems studies with the aim of getting more accurately models that represents the behavior of those systems when they are subjected to transients. Traditionally these studies have been conducted using modeling techniques which are restricted to low frequencies ranges and fixed geometries. In this work the authors present a novel technique based on circuit synthesis whose behavior is highly accurate for a wide frequency range.
