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| Research on icing four-split wire-induced de-icing algorithm based on CR method |
| Received:June 18, 2023 Revised:August 03, 2023 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20230618002 |
| KeyWord:quad bundle conductors ice-shedding induce effect sub-conductor dynamic response |
| Author | Institution |
| 鲁佳帛 |
重庆交通大学 土木工程学院, 重庆 ;重庆交通大学 省部共建山区桥梁及隧道工程国家重点实验室, 重庆 |
| 王家林 |
重庆交通大学 土木工程学院, 重庆 |
| 吕中宾 |
国网河南电力公司电力科学研究院, 郑州 |
| 黄瞻 |
重庆交通大学 土木工程学院, 重庆 |
| 范理 |
重庆交通大学 土木工程学院, 重庆 |
| 伍川 |
国网河南电力公司电力科学研究院, 郑州 |
| 刘小会 |
重庆交通大学 土木工程学院, 重庆 |
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| Abstract: |
| In order to more realistically and quickly simulate the induced de-icing process of ice-coated and split conductors,this paper develops a beam element calculation program based on the Corotational method,which can quickly and accurately simulate the large-displacement geometrically nonlinear problem of spacers.The beam element is degenerated into a rod element,which can quickly and accurately calculate the large-scale motion of the ice-coated wire space,and the reliability of the method is verified by an example.Finally,the judging criterion of the ice-coated shedding acceleration is defined,and the finite element model of the ice-coated four-split conductor induced de-icing is established.According to the finite element model,the de-icing jump height and variation law of each sub-conductor under different ice thickness,initial de-icing position and critical acceleration are studied.The results show that:the induced de-icing effect of different sub-conductors will produce different ice jump effects,which are close to 1.25 times of the non-induced de-icing mode;the induced effect caused by the lower sub-conductor is much larger than that of the upper sub-conductor;thicker or the closer the initial deicing position is to the midpoint,the smaller the critical acceleration,and the greater the induced effect.The simulation results in this paper can provide a reference for the design of transmission lines in heavy ice areas,and the simulation method proposed in this paper can provide a new research idea for the simulation of deicing and deicing of split conductors. |
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