Online Estimation of Power System Inertia Using Dynamic Regressor Extension and Mixing

Johannes Schiffer (1) , Petros Aristidou , Romeo Ortega (2)

1 School of Electronics and Electrical Engineering
2 L2S - Laboratoire des signaux et systèmes

The increasing penetration of power-electronic-interfaced devices is expected to have a significant effect on the overall system inertia and a crucial impact on the system dynamics. In future, the reduction of inertia will have drastic consequences on protection and real-time control and will play a crucial role in the system operation. Therefore, in a highly deregulated and uncertain environment, it is necessary for transmission system operators to be able to monitor the system inertia in real time. We address this problem by developing and validating an online inertia estimation algorithm. The estimator is derived using the recently proposed dynamic regressor and mixing procedure. The performance of the estimator is demonstrated via several test cases using the 1013-machine ENTSO-E dynamic model.

Keywords: Power system inertia; power system dynamics; power system stability; low-inertia systems; parameter estimation

Domains: Automatic Control Engineering; Automatic

Johannes Schiffer, Petros Aristidou, Romeo Ortega. Online Estimation of Power System Inertia Using Dynamic Regressor Extension and Mixing. IEEE Transactions on Power Systems, 2019, 34 (6), pp.4993 - 5001. ⟨10.1109/tpwrs.2019.2915249⟩. ⟨hal-02419404⟩