Transformer Design: Part 1

1. Unit 1: Transformer Design: Part 1
Session-2/36
Numerical and Methods of cooling of transformer
Dr. Anand.V.Satpute
(Associate Professor)
Electrical Engineering Department,
MMCOE, Pune

2. Outline:
A. Attendance
B. Review of the previous session
C. Learning Outcomes of the session
D. Content
E. Student’s evaluation
F. Preparation for next session
G. Wrap up

3. B. Review of previous session:
• Heating and Cooling curve.
• Heating and Cooling time constant
• Insulation class and Dissipation factor

4. C. Learning Outcomes of the session:
• Cooling methods of Transformer
• Calculation of Heating and Cooling Time constant

5. D. Content:
Content Learning /
Methodology
Faculty
Approach
Typical Student
Activity
Skill/
Competency
Developed
Basics of transmission line PPT, Experimentation
Explain Understand
Critical Thinking -
Observation
Classification of Transmission lines
PPT Explains, Guides Remember
Critical Thinking –
Observation
Performance analysis of Single
phase short transmission lines Chalk Board, PPT,
Demonstration
Explain Listen
Critical Thinking –
Observation
Performance analysis of three
phase short transmission lines Chalk Board, PPT Explain Listen
Critical Thinking –
Inference

6. Material Comparison

7. Methods of Cooling

8. Methods of Cooling

9. Oil Natural Air Natural (ONAN) Cooling

10. Oil Natural Air Forced (ONAF) Cooling

11. Oil Forced Air Forced (OFAF) Cooling

12. Oil Forced Water Forced (OFWF) Cooling

13. Numerical

14. Numerical

15. Numerical

16. Numerical

17. Numerical

18. E. Student’s evaluation
Questions
1. List out Cooling methods as per transformer capacity.

19. • Types and constructional features of core and
windings used in transformer.
F. Preparation for Next Session:-

20. G. Wrap Up
In this lecture we have learned
∙ Necessity of cooling in transformer
∙ Different types of cooling methods used in transformer.
∙ Equations used to calculate Heating and Cooling time constant