Combined Frequency and RoCoF Control of Converter-Interfaced Energy Storage Systems⁎. Issue 4 (2019)

• Record Type: Journal Article
• Authors: Ortega, Álvaro; Milano, Federico
• Is Part Of: IFAC-PapersOnLine. Volume 52:Issue 4(2019)
• Page Start: 240
• Page End: 245
• Publication Date: 2019
• Subjects: Frequency control -- rate of change of frequency (RoCoF) -- converter-interfaced energy storage system (CI-ESS) -- battery energy storage -- distributed energy resource (DER); Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2019.08.198
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: This paper proposes an effective control strategy for converter-interfaced energy storage systems (CI-ESSs) 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.