中北大学学报（自然科学版）2019，Vol.40Issue(3)：198-205,8.DOI:10.3969/j.issn.1673-3193.2019.03.002
覆冰塔线体系爆破除冰后的动力响应分析
Dynamic Response Analysis of Iced Tower-Line System Due to Blasting Deicing
曹咏弘 1薛凯允 1苗琳琳 1李海涛 1关学锋 1张建军 1李国平1
作者信息
- 1. 中北大学 理学院, 山西 太原 030051
- 折叠
摘要
Abstract
Based on the finite software ABAQUS, the de-icing response of a icing 220 kV single circuit transmission tower-line system was simulated.The variable density method was used to simulate the inertial effect of ice without shedding, and the shedding of ice was realized by changing the inertial acceleration.The influence of line types, locations of de-icing spans, locations of de-icing sites, de-icing rates and de-icing orders of conductors and ground wires on dynamic effects of tower-line system were analyzed.The safe solutions of deicing were given for single ground wire and conductor, and the safe solutions of simultaneous deicing and step-by-step deicing were also given for double bundled conductors.The results show, when the span length is 300 meters, that terminal de-icing once method with initial de-icing rate less than 20％ should be selected for single conductor, and with initial de-icing rate less than 30％for single ground wire, and for double bundled conductors, that the middle de-icing method with initial de-icing rate less than 10％ and terminal de-icing method with initial de-icing rate less than30％should be selected, and when the step-by-step de-icing method is used in the same span, temporary spacers are needed for the de-iced conductors, and the de-icing rate is needed to reduce stepwise, and the de-icing rate is needed to reduce when conductors have different heights.关键词
输电线路/脱冰/覆冰/动力响应/有限元Key words
transmission line/ice shedding/icing/dynamic response/finite element分类
信息技术与安全科学引用本文复制引用
曹咏弘,薛凯允,苗琳琳,李海涛,关学锋,张建军,李国平..覆冰塔线体系爆破除冰后的动力响应分析[J].中北大学学报（自然科学版）,2019,40(3):198-205,8.
