One of the most important electromagnetic systems today is the electrical transformer. The robustness, range of operation energy density and simplicity associated with the relatively long life make the transformer a unique component in the Electrical Power Transmission and Distribution Systems.
As an owner of transformers you are faced with the challenge of how to minimize downtime and maximize life expectancy of your valuable asset. With budget restraints, knowing how to prioritize your transformer testing and maintenance expenditures is crucial. This transformer testing and maintenance course will review what traditional and new maintenance testing procedures should be utilized by transformer owners. We will also look at the latest developments in transformer design, construction. Many electric utilities and large industrial, commercial and institutional owners of medium and large power transformers are beginning to develop their own "Life Cycle Transformer Management" programs.
Our Electrical Transformer design, testing and maintenance course will deal with many of the technical and economic issues dealing with a) The Screening Process to prioritize the transformer fleet; b) Transformer Condition Assessment of individual transformers, and c) Life Cycle Decisions: retire, refurbish, replace, relocate.
Students will learn
- The principle of operation of the transformers
- Types of transformer core: one phase; 3 phase; Autotransformer
- Most important and typical applications;
- Sizing of a transformer for a specific application;
- How to calculate the main parameters based on equivalent schematic
- Factors that affect the proper operation of the Power and Distribution Transformers
- Connection Diagrams of primary and secondary winding; Y; Delta and Zigzag
- Special transformers for low power: Current and Voltage-Autotransformers; Special Core construction and special winding diagrams
- Relay Protection for Power and Distribution Transformers
- Buckholtz Gas relay Protection and indication
- Paralleling Backup Power transformers
- Voltage transients during operation
- Surge arrestors required
- Coordination of the BIL with the rest of the System
- Thermal Stress and normal limits
- Forced ventilation and oil circulation
- Overload Capability of Power transformers
- Installation conditions for specific application
- Off Load and On Load tap changer
- Testing the dry type Power Transformers
- Testing Oil Cooled Power transformers
- On Power and Off Power Oil Test
