Abstract
Fast and reliable protection scheme is the key to ensure the safe operation of flexible DC grid. A longitudinal backup protection method based on the characteristics of traveling wave is proposed. The arrival simultaneity of forward and backward traveling waves under forward and backward DC faults, and the characteristics of the traveling waves are analyzed. The direction criterion is formed by using the characteristic that the backward traveling wave and the front traveling wave arrive at the same time. If the judgment results of the protection at both ends are forward faults, it can be determined as an internal fault. The protection at both ends only needs to transmit direction signal to form the longitudinal protection. Simulation results show that the protection scheme can accurately distinguish internal and external faults, and has a good performance to overcome transition resistance.
Sign-in/Register to access full text options 
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 callDisclaimer: 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.
