NHPC Limited
Online published on 26 October, 2017.
This paper details the experience of successful restoration of 4 nos. 70 MW vertical shaft hydro generators in an underground power house which was flooded during flash floods occurred in Uttarakhand in the year 2013. The generating units were under deposition of heavy silt and dirt and were restored with the original stator core and windings by adopting well defined dry out procedures.
