1. Single Phase and three Phase Distribution Substation
SEMINAR ON
Single Phase and three Phase Distribution Substation
P. Ashis Ku. Patra Regd. No Electrical Engg.

2. * Requirement of Substation * What is a Substation
Introduction:
* Requirement of Substation
* What is a Substation

3. Classification: 1. In accordance with the service a. Static
b. Converting
2. In accordance with the service voltage
a. Extra high voltage transmission Substation
b. Step-down or Distribution Substation
c. Industrial Substation
d. Substation for power factor correction

4. Classification contd.
3. In accordance with mounting a. Pole-mounted Substation b. Foundation-mounted Substation

5. POLE MOUNTED FOUNDATION MOUNTED

6. Selection and Location of Site for a Distribution Substation:
Availability of land
Accessible to public road
Away from chemical industries
Nearer to load center

7. Single phase Distribution Substation
Ratings: 25 kVA 11/0.433 kV 1.31/33.34 Amp Delta-Star Core type transformer % impedance voltage=4

8. RATING PLATE

9. Three phase Distribution Substation
Ratings 250 kVA 11000/433 V 13.12/333 Amp Delta-Star Core type transformer % impedance voltage=4.6

10. OVERALL VIEW OF THREE PHASE DISTRIBUTION SUBSTATION

11. Equipments for a distribution substation
Main Bus-Bar
Lightning Arrestor
Measuring kiosk (CT,PT)
Isolators(AB switch)
Horn Gap fuse
Rod gap Arrestor
Distribution Transformer
Control Cables

12. Equipments for a distribution substation Contd.
Circuit Breaker (MCCB)
Protective Relays
Control room
Earthing

13. MAIN BUS-BAR

14. LIGHTNING ARRESTOR

15. MEASURING KIOSK (CT,PT)

16. ISOLATORS(AB SWITCH)

17. HORN GAP FUSE

18. ROD GAP ARRESTOR

19. DISTRIBUTION TRANSFORMER

20. CONTROL CABLE

21. CIRCUIT BREAKER (MCCB)

22. EARTHING

23. References: OPTCL, Chandaka Electrical Power By J.B. Gupta

24. THANK YOU