Published

2015-01-01

Development of a system for detecting and locating damaged insulator strings with signals collected at substations

Desarrollo de un sistema para detección y localización de cadenas de aisladores dañadas a partir de señales registradas en subestaciones

DOI:

https://doi.org/10.15446/ing.investig.v35n1.41832

Keywords:

insulator strings, transmission line, neural network, current transformer (en)
cadenas de aisladores, línea de transmisión, redes neuronales, transformador de corriente (es)

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Authors

  • Renato Massoni Capelini Universidade Federal de Itajubá

This paper presents a novel technique for remotely identifying and locating of damaged insulator strings based on an analysis of noise signals recorded on the ground connection of current transformers installed on transmission line substations. Damaged insulators usually present electrical surface activity. Surface and corona discharges may result in the generation of high frequency signals that can travel through the transmission line conductors, which are recorded by a data acquisition system. Each signal generated by the surface or corona discharge has a unique signature. This signature changes according to the position of the source, i.e., the damaged string along the line, which enables the association between the signal signature and the location of the string along the line. A method proposed to achieve this association is discussed in this paper as well as the tools and tests carried out during its development. An innovative way for capacitive coupling, which reduce detection system implementation costs is presented

Este artículo presenta una nueva técnica para la identificación y la localización remota de las cadenas de aisladores dañadas basadas en el análisis de las señales de ruido registradas en la conexión a tierra de los transformadores de corriente instalados en subestaciones de línea de transmisión. Aisladores dañados suelen presentar actividad eléctrica superficial que pueden resultar en la generación de señales de alta frecuencia que pueden viajar a través de los conductores de la línea de transmisión y ser registrados por un sistema de adquisición de datos. Cada señal generada por la descarga superficial o corona tiene una firma única. Esta firma cambia con la posición de la fuente (aislador dañado) a lo largo de la línea, lo que hace posible la asociación entre la firma de la señal y la localización de la cadena a lo largo de la línea. Un método propuesto para lograr esta asociación se analiza en este trabajo, así como las herramientas y pruebas llevadas a cabo durante el desarrollo. Se utiliza una forma innovadora de acoplamiento capacitivo, lo que reduce los costos de implementación del sistema de detección.

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How to Cite

Development of a system for detecting and locating damaged insulator strings with signals collected at substations. (2015). Ingeniería E Investigación, 35(1), 43-48. https://doi.org/10.15446/ing.investig.v35n1.41832
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Copyright (c) 2015 Renato Massoni Capelini

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