Abstract
When no-load closing or the voltage recovers after external fault removal of transformer, the inrush current will be caused due to the saturation of iron core, which may lead to misoperation of relay protection device, overvoltage and damage of equipment insulation. It is necessary to find a method to restrain the inrush current harm of transformer. In this paper, Matlab / PSB is used to simulate the inrush current of three-phase transformer under the conditions of no-load switching on and external fault removal, and the simulation research is carried out by changing the switching angle method and changing the transformer connection group method to suppress the inrush current of transformer. The simulation results show that the simulation of inrush current and its suppression can be realized effectively by using Matlab / PSB, which provides the basis for the research of transformer protection algorithm.
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.
