三相导线-相间间隔体系直流融冰热特性有限元及脱冰动力响应分析

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (1) : 138-144.

论文

祝贺1，廖汉梁1，张仁奇2，刘城1

作者信息 +

Finite element analysis of DC ice-melting thermal characteristics and deicing dynamic response in a 3-phase conductor interphase interval system

ZHU He1, LIAO Hanliang1, ZHANG Renqi2, LIU Cheng1

Author information +

文章历史 +

摘要

为研究输电线路导线直流融冰非对称运行特性，以LGJ-400/50输电导线为研究对象，建立不同运行条件下的输电导线实体模型，采用COMSOL软件探究不同覆冰厚度对导线温度分布的影响，并对不同环境温度和不同风速对导线中心点温度变化进行分析，得到脱冰时刻导线温度作为初始条件施加，应用ANSYS LS-DYNA PrepPost非线性结构动力学模型，建立实际运行过程三相导线-相间间隔体系有限元模型，分析导线体系直流融冰非对称脱冰动力响应。结果表明，在采用不同融冰方案工况下，不同脱冰相数下导线体系最大脱冰跳跃高度不同，三相导线-相间间隔导线体系在融冰过程中相比单导线脱冰情况具有非对称性，依据间隔棒布置条件对导线体系脱冰动力响应影响规律，能够优化导线相间距进而保证直流融冰过程安全运行。

Abstract

For the study of transmission line conductor dc asymmetric operation characteristic of melting ice, with transmission conductor LGJ - 400/50 as the research object, and establish a transmission wire entity model under different operating conditions, using COMSOL software to explore the influence of different ice thickness on the conductor temperature distribution, and the different environment temperature and different wind speed on the center conductor temperature change is analyzed, The wire temperature at the deicing time was applied as the initial condition, and ANSYS LS-DYNA PrepPost nonlinear structural dynamics model was used to establish the finite element model of three-phase wire-phase interval wire system in the actual operation process, and analyze the dynamic response of asymmetric deicing in DC melting of the wire system. The results show that the maximum deicing jump height of the wire system varies with the number of deicing phases under the conditions of different deicing schemes. The deicing situation of the three-phase wier-phase interval wire system is asymmetric compared with that of the single wire in the process of deicing. According to the influence rule of spacer rod arrangement on the dynamic response of the wire system, The phase spacing of conductor can be optimized to ensure the safe operation of DC melting process.

导出引用

祝贺1，廖汉梁1，张仁奇2，刘城1. 三相导线-相间间隔体系直流融冰热特性有限元及脱冰动力响应分析[J]. 振动与冲击, 2024, 43(1): 138-144

ZHU He1, LIAO Hanliang1, ZHANG Renqi2, LIU Cheng1. Finite element analysis of DC ice-melting thermal characteristics and deicing dynamic response in a 3-phase conductor interphase interval system[J]. Journal of Vibration and Shock, 2024, 43(1): 138-144

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