Tata Builds Submersible Power Substation to Ease Congestion in Delhi

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Power utility Tata Power Delhi Distribution Limited, which supplies electricity to over 7 million people in North Delhi, has installed a “first-of-its-kind” submersible power substation in Gujranwala Town, New Delhi, to augment the power infrastructure of its operational area.

In collaboration with Toshiba Transmission & Distribution Systems (India) Pvt. Ltd., Tata Power has installed a 630KVA submersible transformer under the parking space of its substation building.

“Load growth in a city like Delhi is almost a vertical curve and there is space crunch for installation of new substations. During such times, the supply is affected & electrical equipment gets damaged due to water ingress, hence restoration of power supply takes longer time. A submersible duty transformer would be an ideal solution for these emergency situations for reliable network and will also prove beneficial in coastal areas where storm, flood etc. disrupt the power supply,” the company said.

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The transformer is equipped with temperature and pressure sensors for monitoring and planning maintenance activities. The equipment is suitable for water submersion duty. Smart meter with Digital Input/ Output has been installed for monitoring the load and raising alerts in case of an issue. The 11kV supply for transformer is fed through Ring Main Unit having special relay which controls the switching and automatic tripping under abnormal network conditions. All this along with the robust technology make it low maintenance and capable of withstanding extreme weather conditions, claims Tata.

Mr. Ganesh Srinivasan, CEO, Tata Power-DDL said, “As a utility of the future, we are constantly focussed at innovating and becoming future ready. This utility installation of submersible power station will not only further strengthen our network but also ensure reliable power supply to our consumers in all times.”

According to Tata, its technology can function even upon complete submersion into water and is particularly useful in today’s time when metro cities are facing steep load growth and space crunch due to urbanization.

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“This transformer can be easily installed under the multilane main roads, service roads, public parks, building parking, basements, and public parking places. Hence it is virtual zero space installation, as the top surface can be used for general purpose application like walk ways, roads, parks etc,” the company said.