Question

Explain what are the failures that occur in an electrical substation and its effects on the electrical system.

Answer 1

THERE ARE MANY REASONS FOR FAILURE IN SUBSTAION.SOME ARE MENTIONED HERE.

1. SINGLE PHASING DUE TO MAL-FUNCTION OF BREAKER.
2. SINGLE PHASE TO GROUND FAULT DUE TO TREE AND OTHER ENVIRONMENTAL EFFECTS.
3. CT AND PT FAILURE
4. UNDER GROUND CABLE FAILURE.
5. TRANSFORMER FAILURE.
6. SUBSTATION FAILURE DUE TO LIGHTENING.
7. FAULT DUE TO ANIMAL.
8. OVER HEAD LINE PRESENT IN SUBSTATION FAILURE.
9. INSULATOR FAILURE..
10. IMPROPER FUNCTION OF ISOLATOR.
11. SUBSTATION TRANSFORMER FAILURE.
12. BATTERY BANK FAILURE.
13. CIRCUIT BREAKER FAILURE.

THE RESULT FOR THE ABOVE PROBLEMS WILL BE FAILURE OF SUBSTAION.FOR MOST OF THE FAULT THE BREAKER WILL TRIP.