Abstract

As the important part of future AC/DC hybrid distribution networks, maintaining the voltage stability of DC microgrid is very important for the safe operation of the distribution network. Based on Brayton-Moser's mixed potential theory, this paper first studies the large disturbance stability of a DC microgrid with constant power load. Then, the stability criterion of the analytic form of the system under large disturbance is obtained, which the effects of parameters such as AC side inductance, resistance, controller control parameters, and constant power load power values on the system stability are taken into account. According to the criterion, a stability control strategy for energy storage system is proposed. This strategy can avoid the unnecessary switching between the master and slave source, ensure the system stable under large disturbances and help the system quickly return to the stable state. The criterion and stability control strategy are simple and can be easily implemented. Simulation results demonstrate that the stability criterion and the control strategy are effective.

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.