Advancements in Dissolved Gas Analysis: Data Quality
Data quality is essential for effective dissolved gas analysis. Trend evaluation and accurate assessment of short-term changes require accuracy and low measurement variability of gas data – so data quality problems must be recognized and dealt with before any DGA interpretation is attempted. Learn more about common data quality issues in this short article from… Continue reading
Advancements in Dissolved Gas Analysis: CO/CO2 Ratio
When conducting dissolved gas analysis, the detection of carbon oxide gases indicates a deterioration of paper insulation within the transformer. Find out more about how the ratio of these gasses can be used to help assess possible issues within the transformer in this short article from Electricity Today Magazine.
Advanced Moisture Assessment for Transformers
Moisture assessment is a complex topic for when it comes to high-voltage transformers. It’s difficult to interpret the water content of oil or paper insulation by looking at individual dissolved water measurements or time-series data, and increases in water solubility due to aging of oil make it risky to rely on relative saturation calculated from… Continue reading
Advancements in Dissolved Gas Analysis: NEI & Gassing Events
Normalized energy intensity (NEI), a fault energy index based on the standard heats of formation of fault gases, provides a useful way to look at fault severity. Check out this short article by Dr. Zachary Draper and Dr. Jim Dukarm from Electricity Today Magazine on how NEI can be used to assess and track faults… Continue reading