Power Grid Corporation of India Ltd (PGCIL) commissioned a 400 kV digital substation in Malerkotla, Punjab, on December 16, 2020. Additionally, this is India’s first fully digital substation, achieved by retrofitting the existing conventional Malerkotla substation (commissioned in 1992) with full digital technology. Such retrofitting also makes PGCIL one of the few power utilities in the world to do so.
Also, PGCIL is developing its first fully digital 200 kV greenfield substation at Chandigarh. Currently, the factory acceptance test (FAT) is complete, with commissioning tests being underway. Link to the news: https://www.tndindia.com/pgcil-commissions-indias-first-400kv-fully-digital-substation/