Adani Electricity Mumbai Ltd (AEML) recently commissioned India’s first synthetic ester oil-filled 220kV, 125MVA capacity power transformer in its Mumbai transmission network.
Supplied by Siemens’ Kalwa works, the green transformer was commissioned in a record time of 15 days.
In a release, AEML said the transformer was commissioned at the 220kV Borivali EHV substation in north Mumbai. The commissioning was done in a record time of 15 days, and by taking all required safety measures in the current pandemic situation.
Better fire resistance
Unlike conventional mineral oil filled transformer, synthetic ester oil transformer has higher fire point (>300°C), low heat of combustion (30.8 MJ/kg). Moreover, it offers enhanced fire safety, better performance at higher temperature and prolonged life of Insulation paper, and consequently of the transformer itself.
Eco-friendly
Further, its oil has better biodegradability which is an environment friendly. Considering this, ester oil transformer is best suitable for city like installation. Along with that it has another additional feature such as resin impregnated paper (RIP) bushings, vacuum OLTC (on load tap changer), which improves reliability, significantly.
Supplied by Siemens
This synthetic ester oil-filled 220kV, 125MVA capacity power transformer was supplied by Siemens Ltd, Kalwa unit.
Mumbai network
This augmentation of transformation capacity at the Borivali EHV substation will strengthen the power transmission & distribution (T&D) infrastructure, to meet incremental load growth in and around Borivali area, maintain reliable/quality power supply and availability of transmission system at desired level.
Greener future
Speaking on the occasion AEML’s spokesman said, “The Installation of Ester oilbased Transformer once again underlines AEML’s commitment for greener future of the city. AEML is already committed to supply 30 per cent of total electricity in its licence area through renewable resources.”
Eight EHV substations
An integrated power utility with presence in generation, transmission and distribution in Mumbai, AEML’s transmission division operates eight 220kV extra high voltage (EHV) substations with an aggregate transformation capacity of 3,250 MVA Five out of these eight EHV substations are new-technology vertically designed, compact gas insulated switchgear (GIS) based EHV substations. AEML’s transmission network comprises around 572 ckm of 220kV lines. Meanwhile, for FY21, AEML registered 99.87 per cent system availability, which is above the norms set by Maharashtra Electricity Regulatory Commission (MERC).
Also See: Tata Power gives Mumbai country’s largest natural ester transformer
