ABB books $900m power transmission order in Indiaby Daniel Canty on Dec 27,
2011
addthis_pub = 'itpservices';
An ABB transformer.
ABB has booked an order worth more than $900 million from Power Grid
Corporation of India Ltd., to deliver an ultrahigh-voltage direct current
(UHVDC) transmission system. The link will supply hydropower from mountainous
northeast India to the populous region of Agra in central India, 1,700
kilometers away.
Northeast India has abundant hydropower resources scattered over a large area,
while the load centers are often located thousands of kilometers away. India
plans to create pooling points in the region to collect electricity generated
from several hydropower stations and transport it across power superhighways to
major urban load centers.
The UHVDC link, operating at 800 kilovolts (kV) will have a converter capacity
of 8,000 megawatts (MW), the highest ever built. When operating at full
capacity, it will have the means to supply electricity to 90 million people
based on current figures for average national consumption.
The system will be the world’s first multi-terminal ultrahigh-voltage link and
will have three converter stations. Two “sending” stations will convert power
from alternating current (AC) to DC for transmission over a single power line
and deliver electricity to a third, “receiving” station in Agra where it will
be converted back into AC for distribution to end users. The power link will
pass through the so called "chicken neck area"; a very narrow patch of land (22
km wide x 18 km long) in the state of West Bengal, which borders Nepal and
Bangladesh. Using ultrahigh-voltage transmission, helps to minimize losses and
improve efficiency. The deployment of a multi-terminal solution as compared to
running separate power links, brings considerable cost reductions.
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