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¿Qué tipos de análisis de aceite para transformadores existen?

Asked: September 26, 2024 at 3:20 pm by Telmo Jove
  • This topic has 1 reply, 2 voices, and was last updated 1 year, 2 months ago by Rómulo Viña Ferrández.

Answers

  • September 26, 2024 at 3:36 pm by Rómulo Viña Ferrández

    El análisis de aceite en transformadores es una práctica esencial para evaluar la salud y el rendimiento del equipo eléctrico. Existen varios tipos de análisis que permiten detectar problemas incipientes y planificar el mantenimiento preventivo. Los principales tipos son:

    Análisis de Gases Disueltos (DGA): Este es uno de los análisis más críticos, ya que detecta gases como hidrógeno, metano, etileno y acetileno, que se generan por la degradación del aceite y los materiales aislantes. Cada gas puede indicar diferentes tipos de fallas internas, como sobrecalentamiento, descargas parciales o arcos eléctricos.

    Prueba de Rigidez Dieléctrica: Mide la capacidad del aceite para resistir descargas eléctricas bajo condiciones controladas. Un valor bajo puede indicar la presencia de contaminantes o degradación del aceite.

    Contenido de Humedad: Determina la cantidad de agua presente en el aceite. La humedad reduce la capacidad aislante del aceite y puede causar corrosión en los componentes internos del transformador.

    Índice de Acidez: Evalúa el nivel de ácidos formados por la oxidación del aceite. Un alto índice de acidez puede degradar los materiales aislantes y afectar el rendimiento del transformador.

    Viscosidad: Mide la fluidez del aceite, lo cual es importante para su correcta circulación y capacidad de enfriamiento. Cambios en la viscosidad pueden indicar contaminantes o degradación del aceite.

    Presencia de Partículas y Sedimentos: Detecta contaminantes sólidos que pueden obstruir los conductos de enfriamiento y reducir la eficiencia del transformador.

    Análisis de Color y Olor: Aunque menos cuantitativos, cambios en el color y el olor del aceite pueden ser indicadores visuales de degradación o contaminación.

    Estos análisis permiten un monitoreo integral del estado del aceite y, por ende, del transformador, facilitando la detección temprana de problemas y asegurando un funcionamiento seguro y eficiente del equipo eléctrico.

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