India's first digital substation gets one bay commissioned

Alstom T&D India has successfully commissioned one bay of a 220 kV substation in Gujarat with its patented Optical Instrument Transformer.

This first of its kind installation in India uses Alstom's range of COSI products manufactured at Phoenix, USA, locally supported by Alstom's Instrument Transformer unit in Hosur and Substation Automation Solution unit in Pallavaram in the state of Tamil Nadu.

The COSI range enables the digitalisation of currents and voltages signals through Optical Ethernet Connectivity, enhancing accuracy, significantly reducing the use of copper cables and strengthening the reliability of the system, a company statement said today.

It will also facilitate current Transformer sizing calculations. Being SCADA ready, it brings Smart Grid Intelligence to the substation by allowing operational data exchange with the network dispatch centre, The installation is simplified due to its light weight and requires less maintenance.

Commenting on the commissioning, Rathin Basu, Managing Director, Alstom T&D India said: "With this new and improved COSI range of Optical Instrument Transformers, Alstom Grid is leading Innovation in India.

"Alstom uses COSI-CT - a digital substation solution - to support the development of Smart Grids, allowing India's emerging power grids to deliver more energy with greater flexibility in a more complex environment," said Rathin Basu, Managing Director, Alstom T&D India.

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