This paper proposes an effective control strategy for converter-interfaced energy storage systems to regulate simultaneously the frequency and its rate of change at the point of common coupling with the grid. The controller takes advantage of the fast response of CI-ESSs, and of the fact that the time frames of inertial response and primary frequency control are decoupled, allowing for an effective control capability the CI-ESS for both time frames after a disturbance. The performance of the proposed control is compared with the standard droop control and the popular virtual inertia provision. Simulation results, based on a modified version of the well-known WSCC 9-bus, 3-machine test system, indicate that the proposed control outperforms, for the scenarios considered, the other two control strategies.
Combined Frequency and RoCoF Control of Converter-Interfaced Energy Storage Systems
2019-06-10
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Improving Small-Signal Stability of Power Systems with Significant Converter-Interfaced Generation
BASE | 2020
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