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Business & Economy

BHEL develops, commissions India’s first Ultra High Voltage AC 1200 kV transformer

NetIndian News Network

New Delhi, February 6, 2012

The public sector Bharat Heavy Electricals Limited (BHEL) today said it had developed and successfully commissioned India's first 1200 kV Ultra High Voltage Alternating Current (UHVAC) transformer of 333 MVA rating.
A press release from BHEL said the country's first 1200 kV transmission line, the pinnacle of voltage levels in the world, has been charged from its 1200 kV UHVAC transformer at Bina in MP. 
"This is the first leap of the country towards excellence in UHVAC systems and the establishment of the first commercial 1200 kV transmission system in India is a rare accomplishment in the world," the release said.
According to it, the development of the 1200 kV UHVAC system will go a long way in enhancing the transmission efficiency from power hubs to distant load centres, which is a need of the country not only from the technical perspective and power demand-supply equation, but also from the point of view of a lower environmental impact due to a significantly lower Right of Way.
The release said the transformer had been developed, manufactured and successfully tested by BHEL entirely through in-house know-how. With this, India has joined a select band of countries in the world possessing this technology, it said.
It said the development of the transformer was the outcome of two years of rigorous research by the engineers of BHEL. 
"The technology for such leading-edge products is specific and available with very few manufacturers worldwide and is zealously guarded and not available for transfer. BHEL had to develop each facet of the technology through in-house R&D efforts to develop a product that is comparable to the best in the world. The transformer has been manufactured under a controlled environment using the contemporary, state-of-the-art manufacturing and testing facilities at the newly constructed transformer block in BHEL’s Bhopal plant to meet stringent quality requirements for operation of such transformers," it said.
The release said BHEL had signed an MoU with PowerGrid for development of this transformer which is also the largest equipment used in a sub-station. 
The 333 MVA, 1150/400/33 kV, single-phase, Auto Transformer has been installed in India's first experimental 1200 kV National Test Station at Bina (MP) being set up by PowerGrid. 
"This is a major mile stone for India towards self reliance in UHVAC transmission systems. Having introduced 765 kV as the highest transmission voltage, the country is aspiring to shift to 1200 kV voltage transmission networks during the XIIth plan period. A large network comprising 1200 kV transmission superhighways is being planned as part of the National Transmission Network," the release added.