Browsing by Author "Ariyo, Funso"

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    Investigation of the Damping of Electromechanical Oscillations Using Power System Stabilizers (PSS) in Nigerian 330 kV Electrical Network
    (Electrical and Electronic Engineering, 2012-08) Ariyo, Funso; Omoigui, Michael
    Abstract The study simulated the behaviour of power system stabilizer (PSS ) on automatic voltage regulator (A VR) and excitation s ystem. It also developed an algorithm to investigate the transient and dynamic stability of the power systems. This was with a view to providing informat ion of da mping rotor os cillations of s ynchronous generators. Three types of power systems were inves tigated: a single-machine-infinite-bus system with and without PSS, two generato rs conn ected to a load with various types of e xc itation controls and a multimachine powe r system typified by Nigerian 330-kV e lectrical network. Tabu-search technique was used to tune the PSS-parameters for a s ingle machine con nected to an infinite bus operating at three different loading conditions . The objective function allowed the selection of the stabilizer parameters to optimally place the closed-loop eigenvalues in the left-hand side of a vertical line in the complex s-plane. The effectiveness of this suggested technique was confirmed through eigenvalue analysis. Time-do main simulations were a lso carried out o n two generators connected to a load using MATLAB/Simu link. T wo types of PSS we re us ed for these simulat ions: generic and multiban d. The power sy stems were subjected to a balanced three-phas e fault (most severe fault). The inves tigation was further e xtended to Nigerian 330-kV electrical network