浙江电力

2021, v.40;No.302(06) 71-76

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特高强度钢芯高强度耐热铝合金绞线在大跨越增容改造工程中的应用
Application of a High-strength Heat Resistant Aluminum Alloy Stranded Conduct with Ultrahigh-strength Steel Core in Long-span Capacity Expansion Projects

齐敦金,王克银,许彦
QI Dunjin,WANG Keyin,XU Yan

摘要(Abstract):

围绕夹江大跨越工程增容目标,依据原线路的设计条件,考虑跨越夹江弧垂和线路防雷导地线间距要求等因素,结合国内一些大跨越工程导线选型情况,对JNRLH2/G5A-360/80特强钢芯高强耐热铝合金绞线、 JNRLH2/G4A-360/100特强钢芯高强耐热铝合金绞线、 JLRX/T-400/65碳纤维复合芯铝绞线等3种导线进行比选论证。推荐JNRLH2/G4A-360/100特强钢芯高强耐热铝合金绞线用于夹江大跨越工程增容改造,可节省大量工程投资,缩短停电时间,方案经济合理。同时,为做好导线微风振动防治工作,进行了导线自阻尼试验和防振锤功率特性试验分析,为夹江大跨越工程的跨越档、锚线档提供了合理的防振方案。
Centered on capacity increase of Jiajiang long-span project, the paper, in view of design conditions of the original lines, sags of the long span and wire clearance requirements of lightning protection grounding and conductor selection for long span projects in China, compares and demonstrates JNRLH2/G5 A-360/80 ultrahigh-strength heat resistant aluminum alloy stranded conductor, JNRLH2/G4 A-360/100 ultrahigh-strength heat resistant aluminum alloy stranded conductor and JLRX/T-400/65 carbon-fiber composite core aluminum stranded conductor. The JNRLH2/G4 A-360/100 ultrahigh-strength heat resistant aluminum alloy stranded conductor is recommended to Jiajiang long-span capacity expansion project. The scheme is economical and rational on account of saving massive project investment and curtailing outage duration. For prevention and treatment of aeolian vibration of conductors, an internal damping test and vibration damper power performance test were conducted to present a rational vibration prevention scheme for crossing spans and anchor line spans.

关键词(KeyWords): 大跨越;增容改造;特强钢芯高强耐热铝合金绞线;防振方案
long span;capacity expansion;ultrahigh-strength core heat resistant aluminum alloy conductor;vibration prevention scheme

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(52077215);; 国网江苏电力公司科技项目(J2020047)

作者(Author): 齐敦金,王克银,许彦
QI Dunjin,WANG Keyin,XU Yan

DOI: 10.19585/j.zjdl.202106011

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