CIGRE India Journal
Year : 2012, Volume : 1, Issue : 2
First page : ( 10) Last page : ( 18)
Print ISSN : 2250-0081. Online ISSN : 2250-009X.

Design & development of 1200kv transmission line and sub-station insulator Hardware Fittings, Clamps & Connectors

Agarwal H.K., Mukherjee K., Pal A.K., Barua P.

Supreme & Co. Pvt. Ltd, Kolkata, India

Online published on 11 December, 2012.

Abstract

1200 kV Power Transmission System being indigenously developed in India under the aegis of PGCIL. So far, highest voltage at which the power is transmitted as 765 kV/800 kV Quad lines. The existing 400 kV line can transfer about 600 MW power, 800 kV line can do between 1,200 MW. In case of 1200 kV Octagonal Bundle Conductor Transmission line the Power carrying capacity increase three folds as compared to 765 kV Quad Lines.

There is growing need for evacuation of large amount of power efficiently to distant load centers while reducing ROW requirements per mw of transmitted power and to cater to this need PGCIL has initiated steps to implement 1200 kV Transmission line. Configuration for trial line is eight bundled conductors bersimis/moose both double circuit and single circuit. Special consideration w.r.t. design, manufacturing & testing of (a) Insulator Hardware fittings (b) Conductor and earthwire accessories and (c) clamps and connectors & substation's were required and our experience in development of these modules are being shared.

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