Indigenous development of 1200 KV UHVAC System -First in India

Indigenous development of 1200 KV UHVAC System -First in India
30.09.2010 03:48:54 Nksagar-Sagar Media -New Delhi,30 Sept 2010
Power grid is establishing a 1200 KV National Test station at Nina.It is unique collaborative efforts where leading manufacturers have joined hands with Power grid for indigenously developing the technology for transmitting power at 1200kV.

(live-PR.com) - 35 Electrical Equipment manufacturers in the ultra high voltage segment including 25 IEEMA members have activity collaborated with Power grid for design and development of the required 1200 KV equipment indigenously.

Few examples of such equipment successfully developed are Transformer,Circuit breakers,Isolators,insulators both procelain and polymers,Transmission Line Towers,Line Hardware and conductors etc.IEEMA has been actively coordinating with PGCIL in the implementation of


the indigenous development of electrical equipment required for setting up of 1200 kV Test station at Bina,M.P. PGCIL here is the primary mover.


1200 kV AC system is being envisaged as next transmission voltage to meet the long term power transfer requirement in the country. Ultra High Voltage (UHV) transmission schemes are driven by the need to transfer large amounts of electrical power from the generation resources to major load centres. This need is typical of large geographical regions with a strongly growing electrical power consumption in one part of the region and natural resources that are far away from the major load centres.

India is one of the most notable examples where in future several UHV systems at 1200 kV AC shall be needed to transfer large quantum of power from various generation
complexes in Chhattisgarh, Jharkhand, Orissa to load centres in Northern and Western regions. Starting from next 5-6 years, 1200 kV AC system in due course, is expected to emerge as main transmission level along with 800 kV, 6000MW HVDC integrated with National Grid at 765kV AC, 400kV AC supported by ± 500 kV HVDC NetworkIndian power system is poised to grow at an accelerated pace. Peak demand is expected to increase more than 500GW by 2026 and beyond from present level of about 105 GW for which installed capacity of about 685GW is required. To meet the long-term power transfer requirement by 2025 and beyond as well as optimal utilization of right of way, large capacity transmission corridors are being planned interconnecting the generating resources/pooling stations with load centers.

In this direction, next higher voltage level at 1200kV is being planned. 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.

The paper describes the considerations of specifications of the 1200 kV transformers for the Testing Station. These prototype transformers shall pose several challenges to designers and shall pave way for the futuristic commercial transformers for the 1200 kV UHVAC.
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