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Insulation system diagnosis in power transformers using DGA analysis and Megger DC
Diagnóstico de sistemas de aislamiento en transformadores de potencia utilizando análisis DGA y pruebas Megger DC
DOI:
https://doi.org/10.15446/ing.investig.103210Keywords:
insulation, correlation, chromatography, maintenance (en)aislamiento, correlación, cromatografía, mantenimiento (es)
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Dissolved gas chromatography (DGA) analysis and Megger DC insulation tests are performed to diagnose the condition of a power transformer. In this context, the objective of this study is to assess whether there is a relationship between both types of tests. To this effect, a database with DGA and Megger DC test protocols is analyzed, using the theory of variable correlation as well as current DGA techniques. The results allow stating that there is indeed a relationship between both tests under specific conditions. Therefore, the DC isolation status of a transformer can be estimated via DGA tests.
Los análisis por cromatografía de gases disueltos (DGA) y las pruebas de aislamiento Megger DC son realizados para diagnosticar el estado de un transformador de potencia. En este contexto, el objetivo de este estudio es evaluar si existe una relación entre ambos tipos de pruebas. Para ello, se analiza una base de datos con protocolos de pruebas DGA y Megger DC, utilizando la teoría de correlación de variables y las técnicas actuales de DGA. Los resultados permiten afirmar que sí existe una relación entre ambas pruebas bajo condiciones específicas. Por lo tanto, se puede estimar el estado de aislamiento DC de un transformador a partir de pruebas DGA.
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Copyright (c) 2024 Juan Sebastian Juris Zapata, Iván Camilo Durán Tovar, Josimar Tello Maita, Agustin Marulanda Guerra
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