On the state estimation for Dynamic Power System

In this contribution we provide a simple and useful state estimation approach for a general class of non linear models that describe dynamic power systems. At first we show, through a small power network, that this class of systems is modeled by non linear differential-algebraic equations that we may always transform to a system of ordinary differential equations. After, we investigate a state estimator based on the EKF technique as well as the local stability analysis. High performances are illustrated through a simulation study applied on 3 and 5 buses test systems. References Shivakumar N. R. and Amit. 2008. A Review of Power System Dynamic State Estimation Techniques. In Power Syst. Technology and IEEE Power India Conf. , India. 1–6. Thabet A. et al. 2010. Power Systems Load Flow and State Estimation: Modified Methods and Evaluation of Stability and Speeds Computing. Int. Rev. of Electr. Eng. , 5,