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Inicio Revista Iberoamericana de Automática e Informática Industrial RIAI Atributos Relevantes para el Diagnóstico Automático de Eventos de Tensión en ...
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Vol. 10. Núm. 1.
Páginas 73-84 (enero - marzo 2013)
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4487
Vol. 10. Núm. 1.
Páginas 73-84 (enero - marzo 2013)
Artículo
Open Access
Atributos Relevantes para el Diagnóstico Automático de Eventos de Tensión en Redes de Distribución de Energía Eléctrica
Relevant Attributes for Voltage Event Diagnosis in Power Distribution Networks
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4487
Victor Barrera Núñeza,
Autor para correspondencia
vbarrera@eia.udg.edu

Autor para correspondencia.
, Ronald Velandiab, Fredy Hernándezb, Joaquim Meléndeza, Hermann Vargasb
a Instituto de Informática y Aplicaciones, Universitat de Girona, Campus Montilivi, 17003, Girona, España
b Escuela de Ingeniería Eléctrica, Electrónica y Telecomunicaciones, Universidad Industrial de Santander, Carrera 27 Calle 9, Bucaramanga, Colombia
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Resumen

En este trabajo se aborda el diagnóstico de eventos o perturbaciones de tensión registradas en subestaciones de distribución. La aparición de dichos eventos se debe a causas diversas que van desde faltas en la red, el arranque de motores de inducción, energización de transformadores y conmutación de bancos de capacitores. Se propone la caracterización de estos eventos de tensión a partir de atributos extraídos directamente de la forma de onda, y que se relacionan con los fenómenos físicos asociados tanto con las causas de los eventos, como con su localización relativa respecto del punto de medida. Se ha estudiado la relevancia de dichos atributos mediante un análisis estadístico de la varianza (MANOVA). Los atributos más relevantes se han utilizado para la obtención de reglas de clasificación mediante algoritmos de aprendizaje automático. Los resultados fueron obtenidos empleando datos de 484 eventos reales y 38 eventos simulados.

Palabras clave:
Análisis estadístico
Calidad de la potencia eléctrica
Atributos
Eventos de tensión
Sistema basado en reglas
Abstract

This paper focuses on diagnosis of voltage events collected in power distribution networks. Fault networks, induction motor starting, transformer energization and capacitor bank switching cause voltage events. A characterization of voltage events using attributes directly extracted from the voltage and current waveforms is done in this paper. The used attributes are highly related with the event root-cause as well as the relative location of the event source with respect to the measurement point. The relevance of each attribute has been assessed applying a statistical analysis of variance (MANOVA). The most relevant attributes have been used as input to rule-extraction algorithms in order to extract classification rules. The results were obtained using 484 real-world and 38 synthetic voltage events.

Keywords:
Statistical analysis
power quality
attributes
voltage sag event
rule based system
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