Advancements in Dissolved Gas Analysis: Risk Assessment
In this short article from Electricity Today, Drs. Draper and Dukarm describe what modern statistics can say about transformer risk assessment, once steps have been taken to improve DGA interpretation (as outlined in previous articles).
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 Electricity Today.
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 dissolved-water measurements based on the assumption that the oil is like new. Check out this article by Dr. Oleg Roizman of Intellpower and our own Dr. Jim Dukarm to find out how a thermodynamic approach to assessment of water in transformers can solve these problems.
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 for better transformer maintenance.
Advancements in Dissolved Gas Analysis: Accounting for Gas Loss
Gas loss within a transformer can hide serious problems for dissolved gas analysis results. Check out this short article by Dr. Zachary Draper and Dr. Jim Dukarm from the High Voltage Electrical Testing special edition of Electricity Today Magazine on how gas loss can be taken into consideration in dissolved gas analysis interpretation to improve overall results.
Progress in Transformer Dissolved-Gas Analysis
Join Dr. Jim Dukarm as he describes how physical chemistry and advanced statistics are breathing new life into transformer DGA. This article describes important advances like the use of fault energy indices and reliability statistics, and also provides an example that shows how these advances can improve fault detection and provide new risk assessment information.
Major Utility Implements Innovative Approach to Transformer Health Assessment
Find out how a major US utility is already using Reliability-based DGA to help identify and focus on at-risk transformers so they can implement an effective strategy to maintain and replace them as needed.
Delta-X Research Named 2019 Company of the Year for Asset Management Solution Providers
Delta-X Research has been named the number one Asset Management Solution Provider of 2019 by Utilities Tech Outlook Magazine. This Company of the Year award is part of the Magazine’s annual compilation of the Top 10 Asset Management Solution Providers.