EPRI Funded Research

The 1st EPRI funded research project "Transformer Insulation Behaviour During Overload" commenced at Monash University in 1994. Since then the project has been renewed continuously. Prior to the current stage four other stages of activity have taken place from 1994 to 2003

The aim of the EPRI-Monash research is to provide practical aids to industry in evaluation of conditions of insulation of operating transformers.

The following is a brief summary of the key outcomes of the EPRI work to date:

• Numerous experimental studies conducted and research results published;
• The Transformer Moisture Monitor (TMM) software application was developed. EPRI issues licenses on the use of the software worldwide;
• The Water-in-Oil Solubility Test was developed. EPRI issues licenses on the use of the test worldwide;
• A procedure for Moisture Assessment and Ranking of Power Transformers on the Basis of Moisture Contamination was developed and available for practical use;
• Effects of moisture, temperature and change in clamping pressure on the Frequency Response Analysis (FRA) signatures were studied;
• The Transformer Moisture Assessor (TMA) Excel workbook passed the design stage and is being tested;
• The Transformer Dryout Monitor (TDM) software application was implemented;
• A new algorithm considering a combined effect of temperature, moisture and oxygen on ageing of a transformer paper-oil insulation system was formulated and is currently under development