Islanding tests near a mini hydro generating plant

In this paper, the authors present measurements taken while a mini hydro power plant and its adjoining load were islanded on a 25 kV distribution feeder. This was part of the acceptance tests carried out before commissioning. The frequency was allowed to vary from 56.3 to 64.5 Hz before the generation was tripped off. The authors also present the estimation of the moment of inertia of the generating system from these measurements.