Reduction of Generator Rotor Oscillations using Artificial Intelligence

Vol.2 No.2

Year: 2008

Issue: Oct-Dec

Title: Reduction of Generator Rotor Oscillations using Artificial Intelligence   

Author Name: A. Jeevanandham, K. Thanushkodi   

Synopsis:   

A classical lead-lag power system stabilizer is used for demonstration in this paper. Three machines connected to infinite bus system is considered. The stabilizer parameters are selected in such a manner to damp the inter area and rotor oscillations. The problem of selecting the stabilizer parameters is converted in to a simple optimization problem with an eigen value based objective function and it is proposed to employ tabu search and simulated annealing for solving optimization problem. The objective function allows the selection of the stabilizer parameters to optimally place the closed-loop eigen values in the left hand side of the complex s-plane. The tuning results of various combinations of machines are compared. The effectiveness of the stabilizer tuned using the suggested technique, in enhancing the stability of power system. Stability is confirmed through eigen value analysis and simulation results.