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| TRANSMISSION WING -
AN OVERVIEW |
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| Organization |
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| The transmission
wing of the TNEB is headed by Chief
Engineer/ Transmission at Chennai - 2, with 5 circles
headed by SEs/GCC at Chennai, Salem, Coimbatore, Trichy
and Madurai. |
Grid
status:
|
| Voltage |
Sub-stations
(Nos) |
Transformers
Capacity
(MVA) |
| 400 KV |
5 |
1660 |
| 230 KV |
40 |
6390 |
| 110 KV |
374 |
10120 |
| 66 KV |
73 |
600 |
| 33 KV |
328 |
2680 |
| Total |
820 |
21450 |
|
| Voltage |
EHT lines
(kms.) |
Voltage |
Capacitor
Banks (MVAR) |
| 230 KV |
5988 |
110 KV |
895.3 |
| 110 KV |
10823 |
33 KV |
302.8 |
| 66 KV |
2756 |
22 KV |
295.2 |
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|
11 KV |
912.0 |
| Total |
19567 |
Total |
2405.3 |
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| Programme for 1999-2000 |
- Sub-stations
: 60 nos.
- Lines :
750 kms.
- Capacitor
banks: 300 MVAR
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| The main activities are, |
- Preparing annual
T&D plan.
- Procurement
of all materials like, towers, conductors, power
transformers, breakers etc.,
- Erection
of 66 KV, 110 KV and 230 KV lines.
- Erection
of 33 KV, 66 KV, 110 KV and 230 KV sub-stations.
- Erection
of 11, 22, 33, 110 KV capacitor
banks.
- Erection
of additional power transformers in existing
sub-stations.
- Enhancing
of power transformer capacities in existing
sub-stations.
- Attending
to repairs of
power transformers, breakers etc.,
- Extension
of 110 KV, 230 KV supply to
new industries.
- Deposit
Contribution Works.
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| Budget |
| Rs. 310 crores for 99-00 |
| Staff: |
| The staff strength is
2665 including 350 officers. |
| The main issues
are |
- Land
acquisition is becoming more
and more difficult.
- Problems
in getting way leave
is increasing.
- 50 new
sub-stations are added every
year to meet the increasing demand.
- Funding:
Every year the T&D
project is funded by the Board, ADB/PFC and REC .
- IX plan
:305 sub-stations, around 4074 ckt.kms. of EHT
lines and 3646 MVAR of capacitor banks are
sanctioned.
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| Key on-going T&D projects are, |
- Thanjavur
230/110 kv ss
- Pudukottai
230/110 kv ss
- Tuticorin
Sipcot 230/110 kv ss
- Alundur
230/110 kv ss
- Manali
230/110 kv ss
- Acharapakkam
230/110 kv ss
- Samayapuram
230/110 kv ss
- Myladuthurai
230/110 KV SS
- Vinnamangalam
230/110 kv ss
- Mettur-Gobichettipalayam
230 KV line
- Pudukkottai-Thanjavur
230 KV line
- PUSHEP-Arasur
230 KV line
- GIS
Substations:Seven wells 110/33 kv ss
- High court
110/33 kv ss
- Nandanam(Jogithottam)
110/33 kv ss
230 KV &
120 KV evacuation schemes may have to be programmed for
the following IPPs depending on the actual coming up of
the projects:
- P.P.Nallur
GTPP (330 MW)
- Neyveli
Zero Unit (250 MW)
- Samalpatti
DEPP (106 MW)
- Samayanallur
DEPP (106 MW)
- North
Chennai TPP (1050 MW)
- Tuticorin
CCGT (103 MW)
- Ennore
CCGT (103 MW)
- Baganur
CCGT (103 MW)
- Hosur DEPP
(53 MW)
Total cost of
the above schemes comes to around Rs.165 Crores.
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| T&D Expenditure: |
- 94: Rs.
113 Crores
- 1994-95 :
Rs. 127 Crores
- 1995-96 :
Rs. 278 Crores
- 1996-97 :
Rs. 333 Crores
- 1997-98 :
Rs. 327 Crores
- 1998-99 :
Rs. 303 Crores
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| Number of sub-stations added year
wise. |
| VOLT |
1993-94 |
1994-95 |
1995-96 |
1996-97 |
1997-98 |
1998-99 |
| 33 KV |
6 |
15 |
39 |
15 |
29 |
27 |
| 66 KV |
3 |
1 |
16 |
1 |
6 |
- |
| 110 KV |
15 |
21 |
55 |
24 |
22 |
31 |
| 230 KV |
3 |
2 |
- |
3 |
3 |
2 |
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Transmission
line length (in circuit kms.) added year wise:
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|
VOLT |
1993-94 |
1994-95 |
1995-96 |
1996-97 |
1997-98 |
1998-99 |
| 33 KV |
4.6 |
9.729 |
4.0 |
18.83 |
14.5 |
12.0 |
| 66 KV |
36.65 |
-- |
16.8 |
36.803 |
13.2 |
-- |
| 110 KV |
162.89 |
166.24 |
373.42 |
529.48 |
365.8 |
440.7 |
| 230 KV |
78.19 |
186.55 |
-- |
38.614 |
96.9 |
180.5 |
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