Mithilfe eines kontinuierlichen Monitorings der Schlüsselgase in einem Transformator können sich anbahnende Defekte frühzeitig erkannt und geeignete Maßnahmen eingeleitet werden. Hierbei übernimmt die Gas-in-Öl-Analyse als weltweit anerkannte Methode zur Zustandsbewertung von Transformatoren eine wesentliche Schlüsselrolle. In einer Zeit, in der die optimale Verwertung von Ressourcen in den Vordergrund rückt, wird auch die Zustandsüberwachung elektrischer Betriebsmittel immer wichtiger. Furthermore, it describes the influence of the key gases investigated and the temperature dependence. This paper presents mathematically or experimentally determined values and compares them with the literature. Here, the Henry constants describe the concentration equilibrium at the phase interfaces and the diffusion coefficients describe the movement of the gas molecules dissolved in mineral oil. Various theories, which are based on the determination of physical and chemical material properties, can be used to describe these processes. The reason for this is that molecules always strive for equal distribution in a chemical-physical system. In free-breathing transformers, degassing or gas dissolving can occur over time, which may influence the interpretation basis of the DGA. This ability to plan maintenance measures may provide the key to cutting costs and increasing the overall system reliability. By continuously monitoring the key gases in a transformer, incipient faults can be detected at an early stage and suitable maintenance measures can be initiated.

The dissolved gas analysis (DGA), an internationally accepted method for the condition assessment of transformers, plays a key role in this respect. At a time when the optimal utilization of resources is becoming ever more important, the condition monitoring of electrical equipment is also becoming increasingly essential.

Duval triangle calculator