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1. 1200KV ULTRA HIGH VOLTAGE TRANSMISSION
SYSTEM
SEMINAR REPORT ON
By :- Prannaya Kumar
Giri
Binay Prasad Giri

2.  Indian power sector is growing at an accelerated pace . In a bid to further boost the
transmission capacity of the country, India has moved towards Ultra High voltage (UHV)
transmission level.
 India has adopted 1200 KV ultra high voltage (UHV) AC system to power transfer over a
large geographical area.
 To develop 1200 kV AC Transmission System and associated equipment indigenously, a
joint initiative is taken by POWERGRID, CPRI and Equipment Manufacturers to set up a
1200 kV Testing Station and an experimental line at BINA in Madhya Pradesh.
INTRODUCTION

3. INDIAN POWER SYSTEM - PRESENT
 Installed Capacity: 147GW
 Peak Demand: 109 GW
 Transmission Grid Comprises:
 765kV Lines - 1600 ckt. km
 400kV Lines - 76,000 ckt. km
 220/132kV Lines - 115,000 ckt. km
 HVDC bipoles - 3 nos.
 HVDC back-to-back - 7 nos.
 NER, ER, NR & WR operating as
single grid of 100 GW
 SR Grid – 40 GW
 Inter-regional capacity : 18,700 MW
NER
ER
NR
WR
SR
ANDAMAN&
NICOBAR
LAKSHADWEEP

4. BALIMELA
KOLHAPUR
UJJAIN
PONDA
SR
CHANDRAPUR
NAGJHARI
BELGAUM
WR
GWALIOR
U.SILERU
1000
MW
RAIPUR
VINDHYACHAL
KORBA
KOTA
MALANPUR
AURAIYA
AGRA
NR
GORAKHPUR
BALIA
PURI
SAHU
500
MW
ER
BUDHIPADAR
GAZUWAKA
MW
1000
ROURKELA
TALCHER
DEHRI
SALAKATI
MUZAFFARPUR
PATNA
BARH
SASARAM
BIHARSHARIFF
BIRPARA
MALDA
NER
BONGAIGAON
M'SARAI/A'BAD
RANCHISIPAT
Inter-Regional Capacity-18700 MW
NATIONAL GRID-EXISTING
Eastern
Region
Western
Region
Southern
Region
Northern
Region
North-
eastern
Region
6330
MW
1260
MW
2990M
W
3630
MW
1720
MW
2120
MW
NATIONAL GRID - PRESENT

5. WHY WE ARE GOING TO 1200KV
TRANSMISSION
 Need for ultra high voltage (UHV) transmission level power over large distances
without any fault.
 Economical transmission of large amount of power.
 Stabilization of the power system to withstand large generation and transmission
outages.
 Limitation of the number of transmission line in order to reduce environmental
impact and land use.

6. 1200 KV NATIONAL TEST STATION
 Two 1000 MVA 1200/400/33 kv auto
transformers
 Two 1200kv & 400kv bays
 One 1200kv line single circuit (about 1.1
km long)
 One 1200kv line double circuit line (about
0.8 km long)

7. (THE SINGLE LINE DIAGRAM OF THE TEST STATION )
 The portion marked with red colour is 1200kV Test Station.

8. 1200kV AC TRANSMISSION LINE TECHNICAL PARAMETERS
(The outcome of field tests to be conducted at test station at Bina.)
 1 p.u= 978kv(1200*1.41/1.732)

9. TECHNICAL PARAMETERS OF 1200kV
EQUIPMENTS
For manufacturers various parameters as worked out for individual equipment:-
 Basic Technical Parameters.
 Circuit Breaker.
 Current Transformer.
 Capacitive Voltage Transformer.
 Surge Arrester.
 Transformer.
 ISOLATOR (Knee type/ vertical break / HDB).
 Insulator Strings.
 Disc Insulators & Hardware.

10. BASIC TECHNICAL PARAMETERS:-

11. (1200KV CIRCUIT BREAKERS)
CIRCUIT BREAKER:-

12. CURRENT TRANSFORMER:-

13. CAPACITIVE VOLTAGE TRANSFORMER:-

14. SURGE ARRESTER:-
The Surge Arrester is four (4) column ZnO type and its technical parameters are as given below :
(850KV, 4 COLUMN SURGE ARRESTERS)

15. TRANSFORMER:-

16. ISOLATOR (KNEE TYPE/ VERTICAL BREAK / HDB):-

17. DISC INSULATORS & HARDWARE:-

18. INSULATOR STRINGS:-

19. TRANSMISSION LINE DATA
SINGLE CIRCUIT HORIZONTAL CONFIGURATION :-
(OCTAGONAL BUNDLE CONDUCTOR)
(CONDUCTOR CONFIGURATION SINGLE CIRCUIT)

20. LINE DATA FOR DOUBLE CIRCUIT VERTICAL CONFIGURATION:-
(CONDUCTOR CONFIGURATION DOUBLE CIRCUIT )

21. TRANSMISSION CAPACITY OF DIFFERENT LINE

22. BENEFIT OF 1200 kV UHV POWER
TRANSMISSION Reduction in the current.
 Reduction in the losses.
 Reduction in volume of conductor material required.
 Decrease in voltage drop & improvement of voltage regulation.
 Increase in Transmission Efficiency.
 Increased power handling capacity.
 The no. of circuits & the land requirement reduces as transmission voltage increases.
 The total line cost per MW per km decreases considerably with the increase in line voltage.

23. (382 K.M 1200KV WARDHA- AURANGABAD TRANSMISSION LINE)
0
100
200
300
400
500
600
700
2007 2012 2022
Year
GW
Installed Capacity
Demand(Peak)
Inter Regional Capacity
FUTURE DEMAND & IMPLEMENTATION OF 1200KV
UHV AC TRANSMISSION

24.  Reactive power management for 1200kv AC system is an important aspect which require
detail analysis for suitable static and dynamic reactive compensation .
 In order to transmit bulk power over long distances that generation station to load center
1200 kv UHV is normally the most cost efficient alternative.
 India now has an open field to demonstrate its prowess on building commercial 1,200kv
lines.
 Establishment of a 1200kv ac test station at BINA is under progress.
CONCLUSION

25.  Agarwal H. K.Mukharji, A.K. Pal and P.Barua,” design and development of 1200KV transmission
line and substation insulation hardware fittings clamps& connectors”, CIGRE India journal vol.1
issue 2, pp.10-18, 2012.
 R.N. Nayak etal, Power Grid Corporation of India, “Integration of 1200kV AC systems for future
Indian Grid”, IEC/CIGRE Beijing, China, July.2007.
 M.G.Unde and B.E. Kushare, “Analysis of Electro magnetic Fields of 1200kV UHV-AC
Transmission Lines “. Unpublished.
 Second International Symposium on Standards for Ultra High Voltage Transmission 1200kV
Transmission System and Status of Development of Substation Equipment/ Transmission Line
Material in India R.N.Nayak ,M.C.Bhatnagar , B.N.De.Bhowmick, R.K.Tyagi . Power Grid
Corporation of India Limited, India.
REFERENCES