高湿度环境下特高压交流均压环电晕放电特性实测与仿真研究OA

The extreme weather conditions caused by power transmission from the west to the east have made the problem of corona discharge on ultra-high voltage fittings more prominent.In the southwest re-gions of China,the climate is characterized by high humidity,with relative humidity levels reaching up to 90％during the summer and consistently remaining above 50％throughout other seasons.The increased presence of water molecules in high-humidity environment enhances the probability of corona dischar-ges.Conventional ultra-high voltage equipment faces challenges in meeting the requirements of corona control in high-humidity conditions.Therefore,it is essential to investigate the corona discharge charac-teristics of corona rings in high-humidity environment.This study addresses the issue of the lack of a basis for voltage correction in visible corona tests of corona rings under humidity conditions exceeding 70％.We have established an adjustable humidity test platform with typical electrode configurations,conducted visible corona tests on corona rings under varying humidity conditions,and obtained the corona discharge characteristics of corona rings at different humidity levels.Additionally,we have performed simulation calculations and analyses of the electric field on the surface of the corona rings.Based on the experimental findings and simulation results in high-humidity environments,some methods are proposed for voltage correction and corona control of corona rings,providing a theoretical foundation and data sup-port for the design of corona-resistant corona rings in special environment.