Transformer Operational Principles, Selection & Troubleshooting

introduction
Transformer Operational Principles, Selection and Troubleshooting training seminar will explore important aspects of power transformers. Power and distribution transformers are among the most important and most expensive components of power systems; their failure can be very costly and dangerous for other major equipment and personnel alike besides imposing extraordinarily high costs on the electrical installation. The utilization of oil-filled and dry-type transformers are increasingly visible due to their outstanding characteristics
With increasing demand in electrical power and reduction of carbon footprint, new innovative and intelligent transformers have emerged. With the digitalization of substation operations, electrical power transmission and distribution has been more efficient.
OBJECTIVES
By the end of this training course, participants will be able to:
• Describe the various classifications and types of transformers
• Appreciate the importance of transformer maintenance
• Reduction of carbon footprint by installing new generation power transformers
• Classify the transformer cooling methods
• Recognize the merits of transformer designs
Course Outline
DAY 1
• General Classification and Types of Transformers
• Transformer Windings, Interconnection of Windings and Tertiary Windings
• Parallel Operation of Transformers and Paralleling Requirements
• Standards for Transformers, Types and Requirements
• Oil-filled and Dry-type Transformers
• Ability to Withstand Short Circuit, Impedance Percentage and Sound Level
DAY 2
• Transformer Oil, Characteristics, Oil Oxidation and Breakdown Voltage
• Effect of Oil Expansion, Breathing Action, Buchholz Relay, Explosion Vents
• Instrument Transformers
• Transformers for Industrial Applications
• Internal and External Cooling of Transformers
• On Load Tap Changer Functionalities
DAY 3
• Thermal Performance and Cyclic Rating of Transformers
• Transformer Winding and Core Construction
• Introduction of Smart Transformers
• Ester Base Oils for New Generation Transformers
• Sound and Noise Levels in Transformers
• Gas Insulated Transformers

DAY 4
• Transformer Protection Systems
• Earth Fault and Over-current Protection of Distribution Transformers
• Transformer Components Maintenance
• Condition-based Maintenance for Transformers
• Special Transformer Test and Diagnostic Instruments
• Remote Monitoring of Transformers

DAY 5
• Troubleshooting Transformer Faults
• Site Acceptance Tests
• Transformer Routine Tests
• Measurement of Winding Resistance and Voltage Ratio
• Sweep Response Frequency Analysis and Tan Delta Tests
• Manufacturer and Transformer Type Tests
• Partial Discharge Tests and Accuracy of Test Reports
• Wrap-up Session, Questions and Answers