Comprehensive Eigenvalue-based Assessment of Rotor Angle Stability in Nigeria's 330 Kv Power Grid
Year: 2025
Type: article
Abstract: Rotor angle stability is a crucial aspect of reliable power system operation, especially in developing countries where grids are weakly interconnected and face rapid load fluctuations. This paper presents an in-depth small-signal stability assessment of the Nigerian 330 kV, 36-bus, 13-generator power network via a detailed linearized state-space model based on eigenvalue modal analysis. Three control scenarios; no controller, governor only, and combined governor with power system stabilizer (PSS)—are examined across incremental loads using nonlinear differential-algebraic equations linearized by Taylor series expansion. Governor + PSS control significantly improves damping, stabilizes critical eigenmodes, and ensures satisfactory settling times. This study identifies nodes requiring additional control tuning and offers insights applicable to similar developing grid systems
Authors: Akinnusimi, Jokojeje Rufus, Adenekan, Olujide Adeyinka, Akinleye, Temitope Grace, Saheed, Ademola Shittu
Institution: Moshood Abiola Polytechnic
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7083830099
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