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Frequency response of synchronous generators and battery energy storage systems: a comparative study

Amin, MR, Negnevitsky, M ORCID: 0000-0002-5130-419X, Franklin, E ORCID: 0000-0002-8146-2770 and Naderi, S ORCID: 0000-0003-2868-2966 2020 , 'Frequency response of synchronous generators and battery energy storage systems: a comparative study', paper presented at the 29th Australasian Universities Power Engineering Conference, AUPEC 2019, 26-29 November 2019, Fiji.

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Abstract

In this paper, a comparison of power systemfrequency response is conducted for a simple modelled powersystem with primary frequency control being provided either bysynchronous generators or by inverter-based Battery EnergyStorage (BES) systems. Mathematical models of conventionalgovernor and turbine are developed, representing conventionalsynchronous generator frequency control, and are used toillustrate system frequency response for a range of typicalconventional generating units. A mathematical model of apower-electronics interfaced Li-ion BES system is developedand used to represent a non-synchronous inverter-basedgenerator with primary frequency control capabilities.MATLAB/Simulink is used to build a model of a small powersystem, and simulations are carried out with at a range of typicalconventional synchronous generating units with a nonsynchronous generating unit in the power system. Thesimulation results demonstrate that the BES can be used forprimary frequency control providing a faster and betterresponse. BES is also capable of almost eliminating frequencyovershoot and reducing 70% of settling time while providingprimary frequency control in power system with various typesof conventional synchronous generating units and a nonsynchronous generating unit.

Item Type: Conference or Workshop Item (Paper)
Authors/Creators:Amin, MR and Negnevitsky, M and Franklin, E and Naderi, S
Keywords: frequency control, battery energy storage, conventional, non-conventional, rate-of-change of frequency
Journal or Publication Title: Proceedings of the 29th Australasian Universities Power Engineering Conference, AUPEC 2019
Publisher: IEEE
DOI / ID Number: 10.1109/AUPEC48547.2019.211850
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