Transformer Operational Principles, Selection and Troubleshooting

DESCRIPTION

Transformer are major components of electrical power systems. This course combines theoretical and practical aspects of transformer design, operation, maintenance and troubleshooting. The course emphasizes the importance of the magnetic properties of the core design on the transformer’s operational performance and electrical properties. It addresses economic trade-offs of transformer in real-world applications.

WHO SHOULD ATTEND

Electrical engineering professionals who need to update their knowledge, distribution system planners, maintenance managers, and power system consultants. The participants should have a basic understanding of power system operations, but do not necessarily have to be experts. Also, the engineers who are starting their career in the field of power in utilities, industrial or commercial plants and institutional complexes will benefit from this course.

SUMMARY OUTLINE

1. Basic Transformer Theory

Currents and magnetic fields
Air core transformer
The magnetic circuit
The B-H curve
Hysteresis, and eddy current losses
Iron or steel core transformer
Equivalent circuit of an iron core transformer
The practical transformer
Magnetizing currents and harmonics
Voltage considerations
Thermal considerations

2. Power Transformers

Rating and classifications
Short circuit duty
Efficiency and losses
Construction
Accessory equipment
Inrush current
Modern and future developments

3. Distribution Transformers

Construction
General transformer design
Transformer locations
Transformer losses
Performance
Transformer loading
Special tests
Protection
Economic application

4. Underground Distribution Transformers

Vault installations
Surface operable installations
Pad mounted distribution transformers

5. Dry Type Transformers

Dry type transformers

6. Transformer Connections

Polarity of single-phase transformers
Angular displacement of three-phase transformers
Three-phase transformer connections
Advantages and disadvantages of the Y-Y connection
The Y-delta and delta-Y connection
The Y-delta grounding bank
Zigzag connections
Comparisons of economy
Three phase banks using single phase transformers
Transforming two-phase voltages into three-phase voltages
The scott-connected connection
Autotransformers and three-winding transformers
Parallelling of transformers
Adjournment

7. Loading Power Transformers

Design criteria
Nameplate ratings
Other thermal characteristics
Thermal profiles
Temperature profiles
Temperature measurements
Predicting thermal response
Load cyclicality
Water in transformers under load
Voltage regulation
Loading recommendations

8. Auxiliary Equipment

Bushings types, standards, design parameters, and testing
Oil preservation systems
Cooling equipment
Temperature and oil level gauge

9. Load Tap Chargers (LTCs)

Design and applications of load tap changers
Rated characteristics and requirements for load tap changers
Selection of load tap changers
Maintenance of load tap changers
Refurbishment replacement of old LTC types

10. Transformer Selection and Application

Most economical transformer for your applicatio

11. Transformer Protection

Fuses and relays
Gas relays
Differential protection
Code requirements

12. Transformer Installation

Transformer installation
Sample transformer acceptance check list

13. Testing Transformers

Standards, and classification of tests
Sequence of tests
Voltage ratio and proper connections
Insulation condition
Dielectric withstand
Performance characteristics
Other tests
Adjournment

14. Maintenance and Troubleshooting

Sample operating and maintenance instructions
Preventative maintenance and predictive maintenance
Gas in oil analysis
Water in oil analysis
Drying techniques
Oil dielectric tests
Sample transformer maintenance checklist
Problem and failure investigations
Problem analysis after sever operating conditions where no failure is involved
Failure investigations

15. Power Transformer Equipment Standards and Processes

Major standards organizations
Process for acceptance of American National Standards
Relevant power transformer standards documents

16. On-Line Monitoring of Liquid-Immersed Transformers

Benefits
On-line monitoring systems
On-line monitoring applications
Concluding Remarks and Final Adjournment

COURSE SPEAKER

Teguh Santoso, Ir
Teguh Santoso experienced more than 26 years in Electrical.

COURSE METHODE

Presentation
Discuss
Case Study
Evaluation
Simulation

TIME & VENUE

Dafam Fortuna Hotel, Jl. Dagen 60 Malioboro Yogyakarta
06 – 09 January 2015
16 – 19 February 2015
09 – 12 Maret 2015
08 – 11 Juni 2015
16 – 19 November 2015
4 days – 08 am – 04 pm

COURSE FEE

IDR 7.000,000.00 per participant non residential

FACILITY

Module / Handout
Certificate
Souvenir
Training Kit

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Transformer Operational Principles, Selection and Troubleshooting