India Commissions Pole-I of World's Largest Multi-Terminal ±800 kV UHVDC Power Transmission Link

[anant_s]

It's good that India joins UHV transmission, it's essential for long distance transmission and can help to optimize location planning of power plants.

Regarding the choice of UHV, the installed 800 kV UHVDC of ABB is a fair option. In the future India may consider a mixed use of this and the 1000 kV UHVAC of SGCC. Despite 1000 kV UHVAC could be more expensive in construction, planners can evaluate on a case-by-case scenario, subject to requirements of different cases.

With economy of scale, if India also adopts the UHVAC like China, Brazil, costs may be driven down. Russia is also a potential user.

Well here in India, they are mostly planning HVDC for Intergrid connects as it provides an inherent advantage of seamlessly connecting two different frequency grids.
EHVAC will probably be for very large capacity power parks coming in (like 4000 MWe Ultra Mega Thermal and planned 6000-10000 MWe Coastal Nuclear Parks at Jaitapur, Kovadda and Bhavnagar).

 

[Providence]

Heard there have been 1200KV UHVDC lines as well ?
Electrical Monitor :: India steps up to 1,200kv

 

[Echo_419]

Power Grid commissions first power transmission express highway
The corridor will connect northern states with north eastern region

The state owned Power Grid Corporation of India completed the construction and started power supply in its first 'Power Transmission Express Highway' or the longest HVDC power transmission corridor connecting northern states with north eastern region. The corridor would facilitate to and fro power supply as per seasonal demand and supply position.

The transmission systems are enabler for vibrant Electricity Market to transfer cheap power to deficit regions and development of Renewable Energy. The average per unit price of energy trading in the market has gone down to less than Rs. 3 per kWhr from the peak of Rs. 8 per kWhr few years back. The reduction in market price of energy has enabled merit order in operation of generators.

The corridor would help transmission of 6,000 Mw of power. However, currently, around 1,700 Mw of power flow is taking place. Power Grid executives said that the line would help in future for managing the supply of large scale hydro power, infirm renewable-based power and would connect power transaction done with Bhutan, Bangladesh and Nepal.

The 1,750 km HVDC line traverses through 3 regions, 4 states and around 40 rivers. This massive line consists of 7000 locations. Power Grid said that this high capacity transmission link is the world's largest multi-terminal 800kV HVDC Project, which comprises of 3,000 Mw HVDC terminals each at Biswanath Chariyali & Alipurduar and a 6000 Mw terminal at Agra.

The company is building two more such corridors connecting Chhatisgarh with Haryana and Tamil Nadu respectively are under construction.

"With the operation of this link, North East can get access to cheaper power from Chattisgarh/Jharkhand during low hydro generation and Surplus hydro generation of North Eastern Region shall now find market in rest of India," said R N Nayak, CMD, Power Grid.

S K Soonee, CEO of POSOCO, the power system manager said the direct interconnection of north eastern region with the national grid will be a major boost for hydro power development in North East, Sikkim and Bhutan. "HVDC system would enhance the security & stability of the grid and also reduce the transmission losses," he said.

North Eastern Region together with Sikkim and Bhutan has a large hydro generation potential to the tune of 65,000 MW. Power Grid said the evacuation of this enormous amount of hydro potential needs about 12-15 high capacity transmission corridors each of 5,000-6,000 Mw capacity, keeping in view constraints of right of way in Chicken Neck Area. Out of four feasible corridors in the Chicken Neck Area, one corridor was picked up for implementation by Power Grid for NER development, said the company.

Source:- Power Grid commissions first power transmission express highway | Business Standard News

Is anybody even reporting this ?

 

[anant_s]

Is anybody even reporting this ?

After Northern Grid Failure a couple of years ago, Powergrid has silently built up a very impressive capacity and it is now upgrading its old lines to increase capacity and reliability. But as always they are silent workers who prefer to do their work in same way as oxygen in air does. You only realize its importance when its not there.

 

[mpk1988]

This was long due.

 

[danger007]

Credits @anant_s

World's largest power producers -

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I know this project from very beginning. ... we paid site visits and sort of studies for this project. .. all i can say we have bright future ahead...

 

[cloud_9]

So this means Assam will get more power with less cost?

More like "Assam or NE will get power from NR during winter months".

 

[Sri]

Great News, This project was long pending along with interlinking of grids, Was there when this was proposed some 20 years back.
Been to Chicken neck many times, India needs to look for alternative solutions like buying land from Bangladesh etc, as its really getting crowded there. (Oil lines, railway lines, power lines, roads etc)

 

[cirr]

This is nothing to shout about。

India has got a long way to go。As a matter of fact，India can hardly be considered over 2 inches from the starting block of what will turn out to be a 1000-mile journey。

So calm down guys and get back to work。

 

[Echo_419]

After Northern Grid Failure a couple of years ago, Powergrid has silently built up a very impressive capacity and it is now upgrading its old lines to increase capacity and reliability. But as always they are silent workers who prefer to do their work in same way as oxygen in air does. You only realize its importance when its not there.

Indeed these are the unsung heroes of India

This is nothing to shout about。

India has got a long way to go。As a matter of fact，India can hardly be considered over 2 inches from the starting block of what will turn out to be a 1000-mile journey。

So calm down guys and get back to work。

You should 1st read about how much criticism modi gets from the Domestic media,before saying that.

 

[Chanakya's_Chant]

Heard there have been 1200KV UHVDC lines as well ?
Electrical Monitor :: India steps up to 1,200kv

Yes but it is UHVAC not UHVDC and it will be operational by 2017-18 for commercial operations.
India to have world’s highest power transmission line | Business Line

The world’s highest voltage level, 1200kV UHVAC sub-station is located at Bina in Madhya Pradesh for its pilot project. The project involves a unique Public Private Partnership (PPP) model, where all the UHV equipments have been developed indigenously by a consortium of 35 Indian power equipment manufacturers in association with POWERGRID, who provided the necessary resources and basic system design & specifications. The private manufacturers have created suitable facilities to design & manufacture 1200 kV equipments for the test station.
World’s Highest Voltage Level 1200 kV AC Sub- Station dedicated to the Nation