Grid Stability Assessment of Emerging Power Systems with DFIG Wind Integration

Most electricity-generating plants today rely on fossil fuels that emit greenhouse gases and are a major contributor to global warming. Renewable energy sources such as wind power offer a sustainable alternative but can impact power system stability—particularly in developing grids. This study relies on a detailed case study model to investigate the impact of Doubly-Fed Induction Generator (DFIG)-based wind turbine generators (WTGs) on the transient stability of the Nigerian power system. Two scenarios were evaluated: (1) supplementing existing conventional generators with WTGs, and (2) replacing gas-fired generators (GFGs) entirely with WTGs. The most suitable connection points for each scenario were identified. Case study results indicate a 9% improvement in transient stability when WTGs supplement conventional generators, while replacing GFGs with WTGs led to a 9% reduction in stability. These findings underscore the need for appropriate inertial support or alternative stabilization measures during the transition to a high penetration of renewable energy in the Nigerian grid