Abstract
Live working in substation is of importance to ensure the reliability of power system. Minimum approach distance and complex gaps are key parameters for safety of workers and electric equipment in substation. The discharge characteristic curves corresponding to four working gap configuration in substation, such as equalpotential personnel-grounding structures, equipotential personnel-adjacent phase bus, live phase bus-working personnel-grounding structures, live phase bus-working personnel-adjacent phase bus were obtained by the switching impulse discharge test in this article. Combined with overvoltage level of 220 kV typical substation design scheme, the minimum working electrical minimum approach distances were calculated : phase to ground safe distance 1.2 m, phase to phase safe distance 2.1 m, and a safe distance, phase to ground complex gaps 1.3 m, phase to phase complex gaps 2.2 m. The minimum approach distances comply with relevant regulations for 220 kV substation working by comparative analysis.
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.
