Manual on Transmission Lines

The Transmission sector in India has progressed by leaps and bounds in the past years. The length of transmission lines of rating 220 kV, 400 kV, 765 kV and HVDC is 2,92,000 circuit kms as on April 2014. The addition of transmission lines during 12th Plan and 13th Plan is expected to be about 1,10,000 ckt. kms and 1,30,000 kms respectively. Presently, India is the only country who has set up 1200 kV National Test Station, i.e., the highest voltage in the world. The credit for the same goes largely to the team of POWERGRID Engineers headed by Shri R.N. Nayak, CMD and also to the 35 manufacturers, who have contributed equipment and their services setting up the 1200 kV Test Station. Since, Transmission Lines are the vehicles for optimum transmission and utilization of power produced at Power Projects, yet these suffer from limitless insurmountable handicaps – Funds, Environment, Ecology, Proximity of Objects. Forests, Right of Way, Changing Hostile Terrains, Uncertainties of Wind, Temperature, Snow and Lightning, and above all requirements of Reliability, Security and Safety. Overcoming all these adversities, Transmission Lines have to deliver power to the consumers at minimum cost and with maximum reliability.