Download - CSEB - Copy
-
7/30/2019 CSEB - Copy
1/18
Disha Institute Of Management And Technology
PresentationOn
Vocational Training(Session 25-may-12 to 24-june-12)
Topic:- 132KV/33KV Sub-StationIn
Chhattisgarh State Power Transmission Co. Ltd.
From:Chhattisgarh State Electricity Board
(Gudhiyari, Raipur, C.G.)
-
7/30/2019 CSEB - Copy
2/18
Chhattisgarh State Electricity Board(CSEB)CHHATTISGARH STATE POWER AND TRANSMISSION
COMPANY LTD(CSPTCL)
132 KV SUB-STATION
-
7/30/2019 CSEB - Copy
3/18
Single Line Diagram:-
http://localhost/var/www/apps/conversion/tmp/scratch_10/Name%20of%20the%20symbols.pptx -
7/30/2019 CSEB - Copy
4/18
TRANSFORMER:
A transformer is a staticpiece of apparatus bymeans of which electricpower in one circuit istransformed into electricpower of the same
frequency in anothercircuit.
-
7/30/2019 CSEB - Copy
5/18
Specification of Transformer: -
Continuous rating MVA = 32/40
Numbers of unit = Two(2 nos)
Phase = 50Hz
Frequency = 132/33 kv
Normal voltage ratio at no load = Star/Delta
Connections = nyno
Vector group = +5% to 15% of132 KV in 1.25% step
Tapping range = TypeSN /50012/350/300/16-0CRT male
Details of C.T. = (1) H.V. WTI C.T. single core ring type, 10VA ratio 205.8/1.8
class-5, fitted inside HV bushing current in 2V terminals.
(2) L.V. WTI C.T. single core ring type 10VA Ratio:- 6.99/1.8
amps class-5, fitted inside L.V. bushing current in 2V terminal.
-
7/30/2019 CSEB - Copy
6/18
Cooling = ONAN/ONAF
Terminal arrangement = (1) H.V. 145KV/1250 amps, 650 BIL 300 BCT OIP
condenser bushing with arching hours. Coverage
distance:- 1300mm.
(2) L.V. 52KV/1250 amps, 250 BIL 100 BCI OIP
condensers bushing with arching hours. Creep agedistance: - 1300.
(3) H.V. N & L.V. N 52KV/1250 amps 250BIL ,
100 BCT OIP condenser bushing without arching
hours. Creep age distance:- 1300mm.
Total weight of transformer = 73500Kg
Weight/quantity of oil = 15000Kg/16900 liters (for first filling)
Untangling weight = 41000Kg (core & winding with cover)
Transport weight = 50000Kg (gas filled)
-
7/30/2019 CSEB - Copy
7/18
CURRENT TRANSFORMER
Current transformers are used for
reducing or stepping down A.C.
current from higher value to lover
for measurement protection or
control
Types of Current Transformer:
1. Ring type C.T. or window type C.T
2. Mounded Resin C.T
-
7/30/2019 CSEB - Copy
8/18
VOLTAGE TRANSFORMER
Voltage transformers are used for protection
and measurement. Accordingly they are
either measuring type or protective type
voltage transformers. They may be either
single or three phases. The primary of
voltage transformer is connected directly
to power circuit between phase and ground
depending upon rated voltage and
application.
-
7/30/2019 CSEB - Copy
9/18
Po
werTran
sformer
Transformer is a static
electromagnetic machine
which transforms alternating
current from one A.C. voltage
at same frequency & at the
same apparent power from one
winding via common magnetic
core.
-
7/30/2019 CSEB - Copy
10/18
Use And Application of Power Transformer:
GENERATION
TRANSMISSION
DISTRIBUTION
RECTIFIER PLANTS
-
7/30/2019 CSEB - Copy
11/18
CIRCUITBR
EAKER:
It is an automatic devicecapable of making andbreaking an electric circuitunder normal & abnormalcondition such as shortcircuit.
-
7/30/2019 CSEB - Copy
12/18
TYPES OF CIRCUIT BREAKER:
1. Air circuit-breaker miniature circuit breaker (ACB).
2. Oil circuit-breaker tank type or bulk oil (OCB).
3. Minimum oil circuit-breaker (MOCB).
4. Air blast circuit-breaker (ABCB).
5. Sulfur hexafluoride circuit-breaker (single pressure or double pressure).
6. Vacuum circuit-breaker (VCB).
-
7/30/2019 CSEB - Copy
13/18
Relay:
A relay is an electrically operated switch.
Relays are used where it is necessary to
control a circuit by a low-power signal
or where several circuits must be
controlled by one signal. Relays were
used extensively in telephone
exchanges and early computers to
perform logical operations
-
7/30/2019 CSEB - Copy
14/18
Isolator Isolator can be rewritten as
isolator is a manually operatedmechanical switch whichseparates a part of theelectrical power systemnormally at off load condition.
-
7/30/2019 CSEB - Copy
15/18
Lightning Arrester A lightning arrester is placed
where wires enter a structure,preventing damage toelectronic instruments withinand ensuring the safety ofindividuals near them.Lightning arresters, also calledsurge protector.
-
7/30/2019 CSEB - Copy
16/18
Wave Trap It is used to trapping the high
frequency communicationsignals sent on the line fromthe remote substation anddiverting them to thetelecom/teleprotection panelin the substation control room.Line trap also is known as
Wave trap
-
7/30/2019 CSEB - Copy
17/18
Presented By:
-
7/30/2019 CSEB - Copy
18/18