Five years ago, dissolved gas analysis (DGA) was like getting a blood test at your annual physical. The transformer expert drew a sample of oil once every three to six months, sent it to the lab for analysis, and then anxiously waited for the results.
Dissolved Gas Analysis (DGA) is one of the most important monitoring tools power utility companies can embrace. As the new realities of power usage are more demanding than ever, ensuring the health of power transformers becomes more challenging. However, DGA on its own doesn't provide an answer to the monitoring needs of the modern power facility. Relying on DGA without addressing its limitations can be as disastrous as not having DGA at all.