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Gawde Y.,The Tata Power Company Ltd | Joshi S.,The Tata Power Company Ltd | Bhonslay C.,The Tata Power Company Ltd | Chorghade P.,The Tata Power Company Ltd
Water and Energy International | Year: 2016

Gas Insulated Switchgear (GIS) is becoming a necessity in urban areas around the world due to non-availability of land for conventional air insulated switchyards/switchgear. Lower maintenance costs and higher levels of safety are offsetting the high initial cost for these GIS. If good quality of equipment and workmanship are ensured during commissioning, GIS gives satisfactory performance all through its life. Usually a trouble free 20 to 25 years of service is ensured. After this, replacement of certain components and overhaul are required. For trouble free long operational performance, most important aspects are accurate design, precise testing and commissioning of the GIS. Paper describes design features of Tata Power GIS installations, its experiences in design improvements and testing & commissioning of the GIS. Tata Power has also gained expertise through their large experience in GIS for rendering services to other clients for GIS testing such as EHV testing, PD measurements, Control system for last twenty years. Paper also covers some of its experiences while rendering services to other utilities. © 2016 Central Board of Irrigation and Power. All rights reserved.


Kini M.V.,The Tata Power Company Ltd | Murlikrishna T.,The Tata Power Company Ltd | Tupe P.,The Tata Power Company Ltd | Sankpal V.,The Tata Power Company Ltd | Umak K.,The Tata Power Company Ltd
Water and Energy International | Year: 2015

In the recent past, failures of few new as well as old Power Transformers have been experienced in Tata Power System. In view of substantial increase in failure of Power Transformers, detailed study of these failures were carried out along with system studies, operation and maintenance practices, design review etc. to obtain sustainable solutions to minimize transformer failures, which will lead to reliable & safe power supply to customers. This paper presents findings from the detailed study and recommendations to minimize recurrence of power transformer failures. Some of the technical cum administrative approaches are also discussed enabling Asset Manager to derive necessary justifications for life cycle management of Power Transformers (Design, Operation & Maintenance, Renovation and Modernization-repairs, overhauls, rewinding and replacement strategy). © 2015, Central Board of Irrigation and Power. All rights reserved.

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