电测与仪表2017，Vol.54Issue(19)：54-58,101,6.
基于紫外成像的高海拔分裂导线电晕起始特性研究
Study on corona onset characteristics of bundle conductors in high altitude area based on equivalent spot area
摘要
Abstract
The corona onset characteristic in high altitude areas is one of the important contents of the research on co-rona characteristics of bundle conductors .Ultraviolet imager is a non-contact discharge detection instrument , the coro-na characteristics of LGJ-720 bundle conductors in the UHV corona cage has been executed through UV (ultraviolet) imaging are measured in this paper .The experiment of corona characteristics on 6*LGJ-720 bundle conductors under the conditions of dry , wet and rain separately were carried out in the UHV test site in Ping ' an of Xining City , and the UV images of corona discharge were obtained .In this paper , the UV image processing algorithm has been improved based on the previous one .The small spot is classified using clustering and graph cuts , the small spot near the main spot and with high gray value is considered to the effective spot while the ones away from the main spot to be interfer -ence.The optimized algorithm of filtering according to each spot position and gray value is established .The relation-ship between voltage and equivalent UV spot area under different meteorological conditions has obtained .Corona onset voltage has obtained through tangent line method , which could provide a reference for the selection of UHV conductors only considering corona onset voltage .关键词
特高压电晕笼/高海拔/电晕/等效光斑面积Key words
UHV corona cage/high altitude/corona/equivalent spot area分类
信息技术与安全科学引用本文复制引用
刘云鹏,周广洋,黄世龙,陈少帅,张重远..基于紫外成像的高海拔分裂导线电晕起始特性研究[J].电测与仪表,2017,54(19):54-58,101,6.基金项目
国家电网公司科技项目(SGYHT/14-JS-188) （SGYHT/14-JS-188）
