To regulate voltage level, the mechanical on-load tap-changer is a crucial series system of
the ultra-high-voltage converter transformer. Whether its motion is reliable throughout the …

This work presents an innovative application of Frequency Response Analysis (FRA) in
order to detect early degradation of Metal Oxide Surge Arresters (MOSAs). This technique …

The fault diagnosis of power transformers is a challenging problem. The massive
multisource fault is heterogeneous, the type of fault is undetermined sometimes, and one …

This paper presents an innovative concept for the online application of Frequency Response
Analysis (FRA). FRA is a well known technique that is applied to detect damage in electric …

Se describe la aplicación del análisis de respuesta al barrido de frecuencia (SFRA) como
herramienta de diagnóstico de fallas en dos autotransformadores de una subestación. A …

Reliability and long lifetime of on-load tap changers are very important issues for the power
transformers. In this work, a novel model switch is developed to simulate the switching …

Liberalization of the electricity market has forced the use of economic and efficient
maintenance techniques. Thus, it is necessary to extend the useful life of the facilities in a …

Frequency Response Analysis (FRA) is a well-known method approved and increases
interest in performing electric power utility tests. FRA has become a recognized technology …

This work proposes a multi-period expansion to the second-order cone programming
(SOCP) model of distribution grid optimal power flow (DOPF) with discrete control variables …

Este artículo presenta los resultados del Análisis de Respuesta al Barrido de Frecuencia
como método de diagnóstico del devanado terciario de un autotransformador que, desde …