Right of Way ( ROW )
- The right of way is a strip of land where the transmission line is constructed, erected, operated and maintain.
- The transmission line is kept in the centre of right of way ( ROW ).
- The right of way clears all trees, structure and construction which interference the power lines.
- The maximum width of ROW is calculated by considering transmission line voltage, wind speed, sag, tower design, swing and other safety consideration.
- The ROW is as per guideline of Ministry of Environment and Forest. The ROW for different transmission line is given as below in India.
Transmission
Line Voltage
|
Right
of Way in Meters
|
11
kV
|
7
|
33
kV
|
15
|
66
kV
|
18
|
110
kV
|
22
|
132
kV
|
27
|
220
kV
|
35
|
400
kV S / C ( Single Circuit )
|
46
|
400
kV D / C ( Double Circuit )
|
46
|
±
500 kV HVDC
|
52
|
765
kV S / C ( Single Circuit With Delta Configuration )
|
64
|
765
kV D / C ( Double Circuit )
|
67
|
±
800 kV HVDC
|
69
|
1200
kV
|
89
|
- Only vertical Delta configuration of 400 kV S/C and Delta configuration of 765 kV S/C shall be permitted in the Forest Area.
- The following width clearance would be permitted for below each conductor or conductor bundle.
Transmission line
with bundle conductor
|
Width Clearance below
each conductor or Bundle conductor ( meter )
|
Up to 400 kV Twin
Bundle
|
3
|
400 kV Triple
Conductor
|
5
|
400 kV / ± 500 kV
HVDC / 765 kV Quadruple Bundle
|
7
|
± 800 kV HVDC / 765
kV Hexagonal Bundle
|
10
|
Minimum clearance between trees and transmission
Transmission Line
Voltage
|
Minimum Clearance Between
Transmission Line and Trees
|
11
kV
|
2.6
|
33
kV
|
2.8
|
66
kV
|
3.4
|
110
kV
|
3.7
|
132
kV
|
4.0
|
220
kV
|
4.6
|
400
kV
|
5.5
|
±
500 kV HVDC
|
7.4
|
765
kV D / C
|
9.0
|
±
800 kV HVDC
|
10.6
|
1200
kV
|
13
|
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