Controller to enable the enhanced frequency response services from a multi-electrical energy storage system
journal contributionposted on 2018-11-16, 13:56 authored by Francisco Sanchez, Joshua Cayenne, Francisco Gonzalez-LongattFrancisco Gonzalez-Longatt, Jose L. Rueda
The increased adoption of renewable energy generation is reducing the inertial response of the Great Britain (GB) power system, which translates into larger frequency variations in both transient and pseudo-steady-state operation. To help mitigate this, National Grid (NG), the transmission system operator in GB, has designed a control scheme called Enhanced Frequency Response (EFR) specifically aimed at energy storage systems (ESSs). This paper proposes a control system that enables the provision of EFR services from a multi-electrical energy storage system (M-EESS) and at the same time allows the management of the state of charge (SOC) of each ESS. The proposed control system uses a Fuzzy Logic Controller (FLC) to maintain the SOC as near as possible to the desired SOC of each ESS while providing EFR. The performance of the proposed controller is validated in transient and steady-state domains. Simulation results highlight the benefits of managing the SOC of the energy storage assets with the proposed controller. These benefits include a reduced rate of change of frequency (ROCOF) and frequency nadir following a loss of generation as well as an increase in the service performance measure (SPM) which renders into increased economic benefits for the service provider.
- Mechanical, Electrical and Manufacturing Engineering
Published inIET Generation, Transmission Distribution
CitationSANCHEZ, F. ... et al, 2018. Controller to enable the enhanced frequency response services from a multi-electrical energy storage system. IET Generation, Transmission & Distribution, 13 (2), pp.258-265.
Publisher© Institution of Engineering and Technology
- AM (Accepted Manuscript)
Publisher statementThis work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/
NotesThis paper is a postprint of a paper submitted to and accepted for publication in IET Generation, Transmission & Distribution and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at the IET Digital Library.