Modeling and Simulation of Power System Stabilizer based on Model Reference Adaptive Control for Power System Stability Improvement

摘要

Power system stabilizer plays a vital role in a typical power system by improving the steady state stability margin and increasing the system positive damping thereby it enhances the stability of the system. Power system stabilizer can be designed to improve the dynamic stability of the power system and suppress the low frequency oscillations effectively, the importance of a PSS by analyzing a typical base case model with power system stabilizer and comparing the without a power system stabilizer. Apart from increasing steady state stability, use of Conventional power system stabilizer in power systems has drawbacks such as non-optimal damping and presence of noise ripples in power output. These drawbacks can be addressed by Model reference Adaptive controller (MRAC). Even though the stabilization time is less for CPSS compared to MRAC, the effect of low frequency oscillations reduction using MRAC takes precedence and is overshadowed by its drawbacks of high stabilization time. Lyapunov method is implemented while designing model reference adaptive control.