Different approaches to grounding resistance. Calculation for thin wire structures at low frequency energization

Faleiro Usanos, Eduardo; Asensio Madrid, Gabriel; Denche Castejon, Gregorio; Garcia Puertas, Daniel y Moreno Mohino, Jorge (2014). Different approaches to grounding resistance. Calculation for thin wire structures at low frequency energization. "IJECS. International Journal of Electrical & Computer Sciences", v. 14 (n. 4); pp. 25-32. ISSN 2077-1231.

Descripción

Título: Different approaches to grounding resistance. Calculation for thin wire structures at low frequency energization
Autor/es:
  • Faleiro Usanos, Eduardo
  • Asensio Madrid, Gabriel
  • Denche Castejon, Gregorio
  • Garcia Puertas, Daniel
  • Moreno Mohino, Jorge
Tipo de Documento: Artículo
Título de Revista/Publicación: IJECS. International Journal of Electrical & Computer Sciences
Fecha: Agosto 2014
Volumen: 14
Materias:
Palabras Clave Informales: Low frequency current energization; Electromagnetic analysis; Grounding grids; Grounding resistance; Method of moments.
Escuela: E.T.S.I. Diseño Industrial (UPM)
Departamento: Ingeniería Eléctrica, Electrónica Automática y Física Aplicada
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The present paper deals with the calculation of grounding resistance of an electrode composed of thin wires, that we consider here as perfect electric conductors (PEC) e.g. with null internal resistance, when buried in a soil of uniform resistivity. The potential profile at the ground surface is also calculated when the electrode is energized with low frequency current. The classic treatment by using leakage currents, called Charge Simulated Method (CSM), is compared with that using a set of steady currents along the axis of the wires, here called the Longitudinal Currents Method (LCM), to solve the Maxwell equations. The method of moments is applied to obtain a numerical approximation of the solution by using rectangular basis functions. Both methods are applied to two types of electrodes and the results are also compared with those obtained using a thirth approach, the Average Potential Method (APM), later described in the text. From the analysis performed, we can estimate a value of the error in the determination of grounding resistance as a function of the number of segments in which the electrodes are divided.

Más información

ID de Registro: 35820
Identificador DC: http://oa.upm.es/35820/
Identificador OAI: oai:oa.upm.es:35820
URL Oficial: http://www.ijens.org/Vol_14_I_04/144604-5858-IJECS-IJENS.pdf
Depositado por: Memoria Investigacion
Depositado el: 18 Jun 2015 08:29
Ultima Modificación: 18 Jun 2015 08:32
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