Abstract
In this paper, the switching surge risks on the low-voltage auxiliary system of the frequent start-stop plant are evaluated based on switching surge simulations, field measurements, and the investigation of a heavy damage case. First of all, modeling and switching surge voltage simulations by the Alternative Transient Program (ATP) of the Electromagnetic Transient Program for an actual plant are presented, where the switching surge voltages produced by the operation of load switches and source breakers of the low-voltage auxiliary system are simulated with respect to switch-close and switch-open operations with different switching modes, and different power-supply sources are considered. Then, the field measurement of switching surge voltages for a load circuit of an auxiliary system is implemented by the fast transient recorder; therefore, the ATP simulation correctness is verified. Finally, the affections of the switching surge voltages on insulation failure of equipment and the extended risks are evaluated by the comparisons between the results of simulation and measurement and the recommendations of the IEEE standard, and the investigation result of an actual heavy damage case. With the conduction of the evaluation, the enhanced measures for switching surge protection are proposed.
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.
