中国电机工程学报Issue(33)：5974-5982,9.DOI:10.13334/j.0258-8013.pcsee.2014.33.022
带电雨凇覆冰铝管起晕电压下降趋势研究
Research on the Decrease Trend in Corona Onset Voltage of Aluminum Conductor After Energized Glaze Icing
摘要
Abstract
Glaze icicles will grow on conductor surfaces and affect its corona onset voltage(COV). Although many researches on icing conductors have been done, they always neglect the fact that the energized icing and no lights have been thrown into decrease regularities of COV values. Therefore, the AC corona discharge tests of smooth conductors after icing were implemented in the Multifunction Climate Chamber while the UV imaging camera andI-U curve fitting were applied to measure and analyze COV values. The finite element models were established to research how the icicles affect electric field on conductor surfaces. Results show that glaze will reduce conductor COV significantly. Different glaze shapes lead to distinct COV values. Increasing the icing time will lessen COV values with the drop rate slowing down. Higher conductivity causes the decline of COV without changing glaze morphology. The sharper the icicles are, the more seriously the field distorted and the lower the COV values are. The results can provide references for selection and design of the transmission lines in glaze icing areas.关键词
铝管/带电覆冰/雨凇/起晕电压/电导率/紫外成像Key words
aluminum conductor/energized icing/glaze/corona onset voltage(COV)/conductivity/UV imaging分类
信息技术与安全科学引用本文复制引用
陈吉,蒋兴良,舒立春,胡建林,胡琴,郭裕钧..带电雨凇覆冰铝管起晕电压下降趋势研究[J].中国电机工程学报,2014,(33):5974-5982,9.基金项目
西南大学博士基金项目(SWU114100)；国家重点基础研究发展计划项目(973项目)(2009CB724502、2009CB724501)。Supported by PHD Research Program of Southwest University (SWU114100) （SWU114100）
The National Basic Research Program of China (973 Program)(2009CB724502,2009CB724501) （973 Program）
