Fault resistance and soil resistivity influence on the impedance based methods for locating faults. a comparative analysis

The influence of the soil resistivity and the fault resistance is considered in this paper where a comparison of a well defined impedance based method for locating faults is presented. Tests were performed in a real power distribution system, using soil resistivity measurements and a range of fault resistances commonly found in such systems. According to the results in a 34kV power distribution system, it is notice that the soil resistivity models which best represents the real systems are those which give better results in the fault location. Additionally, the higher the fault resistance is, the lower the performance index is, showing the influence of this variable. Finally, the influence of the soil resistivity in the distance estimation in such faults where the zero sequence current is different from zero is also analyzed in this paper

• Autores: Mora Flórez, Juan José; García Osorio, Germán; Pérez-Londoño, Sandra Milena
• Tipo de recurso: Article of journal
• Fecha de publicación: 2010
• Institución: Universidad Nacional de Colombia
• Repositorio: Universidad Nacional de Colombia
• Idioma: spa
• OAI Identifier: oai:repositorio.unal.edu.co:unal/37588
• Acceso en línea: https://repositorio.unal.edu.co/handle/unal/37588; http://bdigital.unal.edu.co/27672/
• Palabra clave: Fault location; fault resistance; impedancebased methods; soil resistivity.
• Rights: openAccess
• License: Atribución-NoComercial 4.0 Internacional