Chaos Elimination in Power System Using Synergetic Control Theory

Abstract

This paper puts forward the power system stability under investigation. Power system stability is critical for reliable and safe operation of the network and the protection of the power system elements. Maintaining the voltage level within normal range and the robustness against the disturbances that may lead to chaotic oscillation which finally may cause system bus voltage collapse and angle divergence. The observation of bifurcation and chaotic oscillations are analyzed for a wide range of parameters variations with the help of Lyapunov exponent, Lyapunov spectrum, and bifurcation diagram. Based on the aforementioned analysis, a robust synergetic controller design is achieved based on static synchronous compensator STATCOM and energy storage facilities to maintain the load bus voltage at the rated level and restore the synchronous operation. Simulation results confirm the effectiveness and the robustness of the proposed control scheme.