Contains technology being developed in field of electrical power transmission in refined way leading to less ROW and reducing height of tower ie reduction in tower tonnage.

1. 9 June 2018 K R SURI 1
Composite

2. Central Grid
S
W
N
E
NE
NEW Grid
South
Grid
October 1991
East & North-East
synchronized
March 2003
West synchronized
With East & North-East
August 2006
North synchronized
with Central Grid
Five Regional Grids
Five Frequencies
Raichur-Sholapur
Inter-Regional Link commissioned
One Nation
One Grid
One Frequency
National Grid
One Nation - One Grid – One
Frequency
A long cherished dream turned into
reality
Dec’2013
South
synchronized
with
NEW Grid
Present inter-regional power transfer
capacity: 46,450MW
( target – xii plan – 72,000 mw

3. 1,88,000
CAPACITY (MW)
1713
3,30,000
9,30,000
NOV. 2017

4.  Started in 2008
 Developed in China due to
ROW
Developing Narrow base towers
Reducing load on tower ie Tonnage
 Grid of China describes it as
9 June 2018 K R SURI 4

5.  From 11kv to 66kv --- 2008
 220kv – Jiangsu,Xinjiang, China ----- 2012
 400kv D/C ----- 2015 --- UK
 500/800kv +/-(DC)--- Ningxing China --- 2015
 750kv --- Xinjing, China --- 2015
 1000kv – Mangolia -- 2015
9 June 2018 K R SURI 5

6.  Developed by SINTEX Plastics
 Up to 33kv for distribution systems like
 Flat/Straight/V Cross arms
 World Wide CHINA ---- Leader
Spain
France
Italy
Japan
9 June 2018 K R SURI 6

7. 9 June 2018 K R SURI 7

8.  Conventional method has issue of
swings in strings due to high winds.
This is mainly due to atmospheric changes ie
Global warming
9 June 2018 K R SURI 8

9. 9 June 2018 K R SURI 9

10. 9 June 2018 K R SURI 10

11. INSULATED CROSS ARMS

12.  Guano flashovers are caused by bird
droppings, which is very common in
Urban areas
Slaughter house
Municipal dumping yards
Bird nests
Birds laying eggs
9 June 2018 K R SURI 12

13. 9 June 2018 K R SURI 13

14. Eggs on Towers
9 June 2018 K R SURI 14

15. 9 June 2018 K R SURI 15

16. Development of multi circuit/voltage towers
 Reduce base width ie
Reducing Cantilever load
 Reduce height but keeping Ground
Clearance as per required.
 Less chance of lightening strikes
 Speedy Urban Development.
 Wild life Clearence
9 June 2018 K R SURI 16

17. Protection of Wild Life
50 mtr
9 - 25 mtr
4 - 5 mtr approx
QUTAB MINAR --- 73 mtrs
TOWERS ---- >> 100 mtrs

18. 9 June 2018 K R SURI 18

19. 9 June 2018 K R SURI 19
Upgraded 220kv

20. 220 KV S/C Chukha-Birpara line
Up gradation
upgraded with 400/220 KV multi-
circuit line in Jaldapara
Sanctuary without felling of
single tree

21. 9 June 2018 K R SURI 21

22. 9 June 2018 K R SURI 22

23. 9 June 2018 K R SURI 23

24. 9 June 2018 K R SURI 24

25. Partial
Total
9 June 2018 K R SURI 25

26. TESTING
9 June 2018 K R SURI 26

27.  Limitations in design of Angle locations.(max 8 deg.)
 Total/Partial Towers
 Life not assessed so far wrt Grd.Pollution
 Earth Quakes
 Protection against
Forest Fire Lightening
Holes in FRP
reduces strength
9 June 2018 K R SURI 27

28. 9 June 2018 K R SURI 28
220KV

29. 9 June 2018 29
220kV Tower - Economic Contrast
Shape & Structure Angle-steel Tower Composite Cross-arm Tower Contrast
General Module 2F3-SZ1 2F3-SZ1 /
Wire Number 2×LGJ-630/45 2×LGJ-630/45 /
Circuits Double circuits Double circuits /
Basic Wind Velocity（m/s） 27 27 /
Design Icing Thickness（mm） 10 10 /
Overall Tower Height（m） 49.7 44.5 -10.46%
Nominal Tower Height（m） 33 30 -9.09%
Width of Corridor（m） 11.2 9.6 -14.29%
Foot Distance（m） 8.28 7.35 -11.23%
Tower Weight（T） 13.66 12.57 -7.98%
Material Cost 14.4 14.39 0
Basic Cost 10.2 7.06 -30%
Total Cost 24.6 21.45 -12.8%
K R SURI
500KV (-) 16%

30. 9 June 2018 K R SURI 30