Switchgear and Protection Course: Lecture 21a - Basic Concept of Differential Protection

Course Lessons

1. 1- Switchgear and Protection Course: Lecture 0 - Course Overview
2. 2- Switchgear and Protection Course: Lecture 1 - Introduction to Electrical Switchgear
3. 3- Switchgear and Protection Course: Lecture 2 - Introduction to Overcurrent Devices
4. 4- Switchgear and Protection Course: Lecture 3a - Introduction to Fuse
5. 5- Switchgear and Protection Course: Lecture 3b - Fuses Coordination in Power System
6. 6- Switchgear and Protection Course: Lecture 3c - Effect of Ambient Temperature on Fuse Performance
7. 7- Switchgear and Protection Course: Lecture 4 - Introduction to Circuit Breakers
8. 8- Switchgear and Protection Course: Lecture 5a - Low Voltage Circuit Breakers: Overview
9. 9- Switchgear and Protection Course: Lecture 5b - Miniature Circuit Breaker (MCB)
10. 10- Switchgear and Protection Course: Lecture 5c - Molded Case Circuit Breaker (MCCB)
11. 11- Switchgear and Protection Course: Lecture 5d - Air Circuit Breaker (ACB)
12. 12- Switchgear and Protection Course: Lecture 5e - Residual Current Device (RCD)
13. 13- Switchgear and Protection Course: Lecture 6a - High Voltage Circuit Breakers: Overview
14. 14- Switchgear and Protection Course: Lecture 6b - Types of High Voltage Circuit Breakers
15. 15- Switchgear and Protection Course: Lecture 7 - Recloser
16. 16- Switchgear and Protection Course: Lecture 8 - Sectionalizer
17. 17- Switchgear and Protection Course: Lecture 9a - Isolator
18. 18- Switchgear and Protection Course: Lecture 9b - Surge Arrester
19. 19- Switchgear and Protection Course: Lecture 9c - Wave Trap
20. 20- Switchgear and Protection Course: Lecture 9d - ATS and UPS
21. 21- Switchgear and Protection Course: Lecture 10a - Power System Protection: Overview
22. 22- Switchgear and Protection Course: Lecture 10b - Faults in Power System
23. 23- Switchgear and Protection Course: Lecture 10c - Power System Protection Components
24. 24- Switchgear and Protection Course: Lecture 10d - Requirements for Protection Systems
25. 25- Switchgear and Protection Course: Lecture 10e - Protection of Power System Equipment
26. 26- Switchgear and Protection Course: Lecture 11 - Introduction to Instrument Transformers
27. 27- Switchgear and Protection Course: Lecture 12a - Current Transformer: Overview
28. 28- Switchgear and Protection Course: Lecture 12b - Equivalent Circuit of Current Transformer
29. 29- Switchgear and Protection Course: Lecture 12c - Current Transformer Saturation
30. 30- Switchgear and Protection Course: Lecture 12d - Differences between Metering & Protecting CTs
31. 31- Switchgear and Protection Course: Lecture 12e - Numerical Examples on CT Performance
32. 32- Switchgear and Protection Course: Lecture 13 - Voltage Transformer
33. 33- Switchgear and Protection Course: Lecture 14a - Basics of Relay
34. 34- Switchgear and Protection Course: Lecture 14b - Protection Zones
35. 35- Switchgear and Protection Course: Lecture 14c - Primary and Backup Protection
36. 36- Switchgear and Protection Course: Lecture 15 - Overcurrent Relays
37. 37- Switchgear and Protection Course: Lecture 16a - Setting Rules of Inverse Time Overcurrent Relays
38. 38- Switchgear and Protection Course: Lecture 16b - Examples on Inverse Time Overcurrent Relays Setting
39. 39- Switchgear and Protection Course: Lecture 17a - Introduction to Transmission Lines Protection
40. 40- Switchgear and Protection Course: Lecture 17b - Discrimination Methods in Radial Feeder Protection
41. 41- Switchgear and Protection Course: Lecture 17c - Numerical Example for Radial Feeder Protection
42. 42- Switchgear and Protection Course: Lecture 18a - Need for Directional Protection
43. 43- Switchgear and Protection Course: Lecture 18b - Protection of Parallel Feeders
44. 44- Switchgear and Protection Course: Lecture 18c - Protection of Systems with Two Sources
45. 45- Switchgear and Protection Course: Lecture 18d - Protection of Ring Main Feeder
46. 46- Switchgear and Protection Course: Lecture 19a - Distance Protection: Overview
47. 47- Switchgear and Protection Course: Lecture 19b - Basic Concept of Distance Protection
48. 48- Switchgear and Protection Course: Lecture 19c - Protection Zones of Distance Relay
49. 49- Switchgear and Protection Course: Lecture 19d - Numerical Examples on Distance Protection
50. 50- Switchgear and Protection Course: Lecture 19e - Distance Relay Types and Characteristics
51. 51- Switchgear and Protection Course: Lecture 19f - Examples on Distance Relay Types and Characteristics
52. 52- Switchgear and Protection Course: Lecture 20a - Transformer Faults
53. 53- Switchgear and Protection Course: Lecture 20b - Transformer Classes and Protection Schemes
54. 54- Switchgear and Protection Course: Lecture 21a - Basic Concept of Differential Protection
55. 55- Switchgear and Protection Course: Lecture 21b - Actual Behavior of Differential Scheme
56. 56- Switchgear and Protection Course: Lecture 21c - Percentage Differential Relay
57. 57- Switchgear and Protection Course: Lecture 21d - Differential Protection of Three Phase Transformer
58. 58- Switchgear and Protection Course: Lecture 21e - Restricted Earth Fault Protection
59. 59- Switchgear and Protection Course: Lecture 21f - Transformer Mechanical Protection
60. 60- Switchgear and Protection Course: Lecture 22 - Generator Protection
61. 61- Switchgear and Protection Course: Lecture 23 - Motor Protection
62. 62- Switchgear and Protection Course: Lecture 24 - Bus Protection
63. 63- Switchgear and Protection Course: Lecture 25 - Conclusion