Abstract

Lithium-ion battery energy storage system (LiBESS) is widely used in the power system to support high penetration of renewable energy. To analyse its characteristics, this paper develops an electromagnetic transient model for representing its dynamics in either normal operation or fault conditions. Firstly, the lithium-ion battery model is established to reflect its external characteristics as well as to estimate the state of charge. Then, the different control strategies in normal integration and fault conditions are identified. The fault-ride-through strategy and negative sequence control strategy are activated during fault conditions to ride through the fault and avoid the double-fundamental-frequency (100Hz) fluctuation in the dc bus voltage. In addition, the chopper circuit is incorporated to safeguard the dc bus capacitor from breakdown probably caused by the high dc bus voltage. Finally, the effectiveness of the proposed method is verified with time-domain simulations under either normal or faulting scenarios.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.