Case study on the integration of a non-utility induction generator to the Hydro-Quebec distribution network

This paper investigates the influence of different factors (such as load and capacitive compensation levels, load and turbine dynamic behaviors, machine parameters) on induction generator self-excitation phenomena and related overvoltages, resulting from a fault and/or an unwanted network disconnection. Simulations are performed on a 25 kV distribution network related to an actual project of integration of a nonutility induction generator to the Hydro-Quebec power system. The paper presents the analysis of the results, as well as the derived guidelines for the determination of new relay settings and integration criteria for the Hydro-Quebec distribution network