In this paper, a comparison of power system frequency response is conducted for a simple modelled power system with primary frequency control being provided either by synchronous generators or by inverter-based Battery Energy Storage (BES) systems. Mathematical models of conventional governor and turbine are developed, representing conventional synchronous generator frequency control, and are used to illustrate system frequency response for a range of typical conventional generating units. A mathematical model of a power-electronics interfaced Li-ion BES system is developed and used to represent a non-synchronous inverter-based generator with primary frequency control capabilities. MATLAB/Simulink is used to build a model of a small power system, and simulations are carried out with at a range of typical conventional synchronous generating units with a nonsynchronous generating unit in the power system. The simulation results demonstrate that the BES can be used for primary frequency control providing a faster and better response. BES is also capable of almost eliminating frequency overshoot and reducing 70% of settling time while providing primary frequency control in power system with various types of conventional synchronous generating units and a nonsynchronous generating unit.
Funding
Australian Renewable Energy Agency
Australian National University
Tasmanian Networks Pty Ltd
History
Publication title
Proceedings of the 29th Australasian Universities Power Engineering Conference, AUPEC 2019
Pagination
1-6
ISBN
1728150434
Department/School
School of Engineering
Publisher
IEEE
Place of publication
New Jersey, United States
Event title
29th Australasian Universities Power Engineering Conference, AUPEC 2019