特重冰区特高压直流孤立档导线脱冰动力响应参数预测模型

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (12) : 221-231.

论文

特重冰区特高压直流孤立档导线脱冰动力响应参数预测模型

张立光1,2，滕宇3，董松昭1,2，王炜1,2，李占岭1,2，高英博3，严波3

作者信息 +

Dynamic response parameters prediction models of isolated-span conductor lines in ultra-heavy ice zones after ice-shedding

ZHANG Liguang1,2,TENG Yu3,DONG Songzhao1,2,WANG Wei1,2,LI Zhanling1,2,GAO Yingbo3,YAN Bo3

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文章历史 +

摘要

特重冰区特高压直流线路导线覆冰设计厚度达60 mm~80 mm，多采用孤立档。本文针对特重冰区特高压直流六分裂导线，建立有限元模型，模拟研究不同档距、高差比、覆冰厚度、脱冰率和风速条件下孤立档导线脱冰动力响应，并分析其响应特征。给出导线冰跳高度包络线、有风情况下导线脱冰后横向摆幅参数和纵向不平衡张力的定义。结合利用数值模拟结果建立的数据集和BP(back propagation)神经网络机器学习算法，建立以档距、高差比、覆冰厚度、脱冰率和风速为输入，导线冰跳高度包络线、最大横向摆幅、最小横向摆幅、脱冰前平衡位置、孤立档两端纵向不平衡张力为输出的预测模型，为特重冰区特高压直流线路塔头设计提供依据。

Abstract

The design ice thickness for the ultra-high voltage DC lines in ultra-heavy ice zones may arrives at 60 mm~80 mm, and isolated-span lines are usually employed. In this paper, the finite element models of the ultra-high voltage DC lines in ultra-heavy ice zones are set up, the dynamic responses of the lines with different span length, elevation difference ratio under different ice thickness, ice-shedding rate and wind speed are numerically simulated, and the dynamic response characteristics are analyzed. The conductor jump height envelop, transverse swing amplitude and axial unbalanced tension are defined. Combining the numerical simulations and the BP neural network algorithm, the prediction models for the dynamic response parameters with span length, elevation difference ratio, ice thickness, ice-shedding rate and wind speed as input are established. The prediction models provide instruction for the tower head design of the ultra-high voltage DC lines in ultra-heavy ice zones.

导出引用

张立光1, 2, 滕宇3, 董松昭1, 2, 王炜1, 2, 李占岭1, 2, 高英博3, 严波3. 特重冰区特高压直流孤立档导线脱冰动力响应参数预测模型[J]. 振动与冲击, 2024, 43(12): 221-231

ZHANG Liguang1, 2, TENG Yu3, DONG Songzhao1, 2, WANG Wei1, 2, LI Zhanling1, 2, GAO Yingbo3, YAN Bo3. Dynamic response parameters prediction models of isolated-span conductor lines in ultra-heavy ice zones after ice-shedding[J]. Journal of Vibration and Shock, 2024, 43(12): 221-231

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