内蒙古电力技术2024，Vol.42Issue(2)：61-67,7.DOI:10.19929/j.cnki.nmgdljs.2024.0026
变电站非承流结构金具异常发热缺陷模拟分析
Simulation Analysis of Abnormal Heating Defects of Non-Current Carrying Structure Fittings in Substation
摘要
Abstract
In response to a special heating defect of substation connecting fittings,this paper analyzes the common heating defects of this type of structure,and simulates the generation process of this special defect based on MATLAB software.Taking the fault of jumper conductor clamper as an example,it is assumed that the contact resistance value Rj1 at the fault line clamp varies between 0.001 Ω and 0.8 Ω,with a resistance change step size of 0.005 Ω,and the effective value of the operating current is 280 A.The simulation results show that when a fault occurs at a certain point of the clamp,as the resistance value changes,the heating power Pj1 at that point first increases and then decreases,while the thermal power Pl1 of the connection fittings on the gate-type frame of the outgoing line shows a monotonic increasing trend,finally showing that Pl1 is much greater than Pj1.Simulation verification shows that under specific fault parameters,the actual fault location may cause heating in other areas,while its own heating phenomenon may not be obvious.In this regard,a separate classification method for this type of defect and a tracking treatment method for this type of fault are proposed,providing technical ideas for the treatment of heating faults in fittings in the same type of station.关键词
变电站/发热缺陷/连接金具/电流致热/接触电阻Key words
substation/heating defect/connecting fittings/current induced heating/contact resistance分类
动力与电气工程引用本文复制引用
王英杰,陈波,刘琦,谢明佐,于鲜莉,赵子建,王磊..变电站非承流结构金具异常发热缺陷模拟分析[J].内蒙古电力技术,2024,42(2):61-67,7.基金项目
内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司青年科技人员支持计划项目"蒙西地区一次设备典型电流致热缺陷成因识别与运维策略研究"(2023-QK-08) （集团）
