Power system stabilizer based on robust H2 controller

The design of robust H₂ power system stabilizer to improve the dynamic performance of the power system is proposed. The effectiveness of the proposed power system stabilizer is validated by a simple power system composed of a synchronous generator connected to an infinite bus-bar through a transmission line. The bounds of power system parameters are determined over a wide range of operating conditions. The results proved the robustness and power of the proposed H₂ stabilizer in terms of fast damped response with less settling time. The digital simulation results show that the proposed robust H₂ - PSS can achieve good performance over a wide range of operating conditions. Moreover, a comparison between power system responses at variety of operating points using the PSS based on linear quadratic regulator LQR approach and the proposed robust H₂-PSS is carried out.