新型热铸铜覆钢复合金属材料在变电站接地系统中的应用研究 *

doi:10.11985/2021.01.011

电气工程学报 ›› 2021, Vol. 16 ›› Issue (1): 77-82.doi: 10.11985/2021.01.011

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新型热铸铜覆钢复合金属材料在变电站接地系统中的应用研究 ^*

李扬森¹(), 张成炜²(), 柳松³(), 王鹏飞²

1.国网福建省电力有限公司福州 350003
2.国网福建省电力有限公司经济技术研究院福州 350012
3.中国电建集团福建省电力勘测设计院有限公司福州 350003

收稿日期:2020-08-28 修回日期:2021-01-27 出版日期:2021-03-25 发布日期:2021-03-25
作者简介:李扬森,男,1983年生,高级工程师。主要研究方向为输变电工程设计与施工。E-mail：703359503@qq.com
张成炜,男,1992年生,硕士。主要研究方向为电力系统分析。E-mail：alex191x@163.com
柳松,男,1989年生,硕士。主要研究方向为输变电工程设计。E-mail：fzuliusong@163.com
基金资助:
* 国网福建省电力有限公司科技项目“福建省沿海地区变电站防腐蚀、锈蚀技术研究与应用-1”资助项目(52130N190001)

Research on the Application of New Hot Cast Copper Clad Steel Composite Metal Material in Substation Grounding System

LI Yangsen¹(), ZHANG Chengwei²(), LIU Song³(), WANG Pengfei²

1. State Grid Fujian Electric Power Co., Ltd., Fuzhou 350003
2. State Grid Fujian Economic Research Institute, Fuzhou 350012
3. Powerchina Fujian Electric Power Engineering Co., Ltd., Fuzhou 350003

Received:2020-08-28 Revised:2021-01-27 Online:2021-03-25 Published:2021-03-25

摘要/Abstract

摘要：

阐述了变电站接地系统的原理及其重要性,针对国内外接地系统材料选择进行分析,归纳总结几种常用接地材料的优缺点,论证了变电站接地系统的基本条件;提出一种新型热铸铜覆钢复合金属材料,在高于1 150 ℃的高温无氧环境下,将液态铜通过独特热熔连铸技术铸在钢芯上,再经过特定的加工工艺,不仅具有良好的热稳定性能、过流能力和耐腐蚀性能,还具有极好的硬度和柔软度;以实际变电站接地工程为载体,从全寿命周期的角度分析其优越的经济特性能,并对其在电力系统接地中的进一步广泛应用研究提出建议。

关键词: 铜覆钢, 复合金属, 变电站, 接地系统, 全寿命周期

Abstract:

Firstly, the principle and importance of substation grounding system are discussed. Secondly, selections of grounding system materials both in domestic and overseas are analyzed. The advantages and disadvantages of several common grounding materials are summarized and concluded, the basic conditions of substation grounding system are demonstrated. Thirdly, a new hot cast copper clad steel composite metal material is presented, of which the liquid copper is cast on the steel core through the unique hot melt continuous casting technology in the high temperature of over 1 150 ℃ without oxygen environment, and then made through the specific processing technology, with not only good thermal stability, flow capacity and corrosion resistance, but also excellent hardness and softness. Fourthly, taking practical substation grounding project as the carrier, the superior economic characteristics are analyzed from the perspective of the whole life cycle. Last but not the least, some suggestions are put forward on its further extensive application in power system grounding.

Key words: Copper clad steel, composite metal, substation, grounding system, life cycle

中图分类号:

TM63
TM862

李扬森, 张成炜, 柳松, 王鹏飞. 新型热铸铜覆钢复合金属材料在变电站接地系统中的应用研究 ^*[J]. 电气工程学报, 2021, 16(1): 77-82.

LI Yangsen, ZHANG Chengwei, LIU Song, WANG Pengfei. Research on the Application of New Hot Cast Copper Clad Steel Composite Metal Material in Substation Grounding System[J]. Journal of Electrical Engineering, 2021, 16(1): 77-82.

图/表 4

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图2

表1

表2

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材料类型	铜绞线 (120 mm²)			热铸铜覆钢(φ=14 mm,铜层厚度=0.8 mm)		热镀锌扁钢 (50 mm×8 mm)
材料类型	水平		接头	水平	接头	水平	接头
数量/(米/个)	1 800	120		1 800	120	1 800		400
单价/元	110	120		70	120	30		10
总价/×10³元	212.4			140.4		58.0
寿命/年	50			50		10
综合成本/×10³元	212.4			140.4		290.0
综合成本比较(%)	151			100		207

材料类型	纯铜材料	热铸铜覆钢材料	热镀锌钢材
柔软度	硬度小,柔软度强,基本无弹性	硬度适中,柔软度较强,基本无弹性	硬度大,弹性强
热稳定系数c	210	179	70
电阻率/×10^-8 (Ω·m)	1.72	4.00	9.78
过流能力	好	适中	差
施工便利性	施工简单	施工简单	效率低
使用寿命 (耐腐蚀性)	>50年	>50年	≤10年

新型热铸铜覆钢复合金属材料在变电站接地系统中的应用研究 ^*

Research on the Application of New Hot Cast Copper Clad Steel Composite Metal Material in Substation Grounding System

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