A Simplified Nonlinear State Estimator for Power Systems
نویسنده
چکیده
This paper presents a simplified nonlinear observer for power systems by exploring the special features of the nonlinear power system model. Rather than directly applying the existing nonlinear observer theory to the 6 order nonlinear power system model, the model is first decoupled into a 3 order nonlinear subsystem and a 3 order linear subsystem. Low order observers are designed for each subsystem separately. Simulation results show that the proposed observer scheme can estimate the state of a power system with good transient response and zero steady state error. Key-Words: Nonlinear observer, state estimation, power systems, single machine, infinite bus.
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