its very usefull for electrical engg students.

1. WELCOME
FRIENDS

2. KANAHIYA LAL
B-TECH (ELECTRICAL)
5th SEM

3. INTRODUCTION ABOUT SUBSTATION
An electrical substation is a subsidiary
station of an electricity generation,
transmission and distribution system where
voltage is transformed high to low or the
reverse using transformers. Electric power may
flow through several substations between
generation plant and consumer, and may be
changed in voltage in several steps.

4. CLASSIFICATION OF SUB-STATION
GENERATING SUB-STATION
GRID SUB-STATION i.e 400KV,220KV,132KV & 66KV
DISTRIBUTION SUB-STATION i.e 33KV & 11KV
(POLE MOUNTED)

5. PARTS OF SUB-STATION
SWITCH YARD
CONTROL ROOM
BATTERY ROOM

6. SWITCH YARD

7. PARTS OF SWITCH YARD
1. INCOMMING LINE
2. TOWER
3. LIGHTENING ARRESTER (L.A)
4. WAVE TRAP
5. C V T (CAPACITIVE VOLTAGE TRANSFORMER)
6. PLCC(POWER LINE CARRIER COMMUNICATION)
7. C T
8. P T
9. ISOLATER

8. 10.CIRCUIT BRAKER
11. BUS-BAR
12.POWER TRANSFORMER
13.RELAYS
14.CAPACITOR BANK

9. INCOMMING LINE & TOWER

10. LIGHTENING ARRESTER(L.A)
LIGHTENING ARRESTER

11. WAVE TRAP
WAVE TRAP

12. CAPACITIVE VOLTAGE
TRANSFORMER

13. C.T & P.T

14. ISOLATERS

15. CIRCUIT BRAKERS

16. BUS-BAR

17. POWER TRANSFORMER

18. CAPACITOR BANK (33 KV)

19. CONTROL ROOM

20. CONTROL PANNEL 132/33 KV
TRANSFORMER

21. CONTROL PANNEL FOR 11KV
FEEDER

22. BATTERY ROOM

23. BATTERY

24. BATTERY CHARGER &
DISTRIBUTION BOARD