Abstract

This paper deals with a large-capacity self-commutated BTB(Back-To-Back) system rated at 50 MW for the purpose of power flow control between transmission networks. It focuses on the dynamic behavior of the BTB system during voltage sags such as a single-line-to-ground(1LG) fault. During the 1LG fault, a dc magnetic deviation occurs in the transformers used for the BTB system just after occurrence and restoration of the fault. It is indispensable to understand an amount of deviation because it may bring magnetic saturation as well as a large amount of magnetizing current to the converter-cells. This paper derives theoretical equations related to the deviation during the ILG fault. The theoretical analysis developed in this paper would make significant contributions to designing the transformers.

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.