Metro will be ‘power'ful

Namma Metro will run smoothly even if the roads below are engulfed in darkness. Reach 1, which is slated to be inaugurated on October 20, will receive uninterrupted power supply from two 66-kV feeders.

According to senior officials of Bangalore Electricity Supply Company (BESCOM), power will be supplied from two grids — 220 kV Hoody Power Station and 220 kV HAL Power Station. Two dedicated lines (66 kV) have been drawn and another 66 kV station has also been set up at the Byappanahalli Metro station. Here, the 66 kV line will be converted to 33 kV and power will be supplied to all stations through the viaduct for traction. This is through 750 volts DC third rail system, different from that of Delhi Metro which is powered by 25 kV overhead cables.

The third rail technology provides electric power to a train through an inverted “U” shaped insulated conductor placed alongside the track. The metro train is powered by a connector that slides along the third rail.

Back-up power

All six stations have back-up power generators. Bangalore Metro Rail Corporation Ltd. (BMRCL) Managing Director N. Sivasailam said that Namma Metro will run as long as there is power in either of the two grids.

BESCOM Managing Director P. Manivannan said that in case of power failure on one (power) grid, power can be supplied from the other. “It is highly unlikely that both grids will develop faults at the same time,” he said.

Mr. Manivannan said that supplying five MW would not be a problem for the power utility. “The consumption of power by the various technology parks in the city is more [than the requirement of BMRCL now],” he said.

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Printable version | Mar 6, 2021 3:09:46 PM |

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