（China Energy Engineering Group Jiangsu Electric Power Design Institute Co., Ltd, Nanjing 211100, China）
Abstract: Conductor selection is one of the vital technologies of large-span transmission lines, which has great significance to the project cost and the safe operation.This paper analyzed the current carrying capacity of ultra high strength steel cored aluminum alloy strands, and two kinds of ultra high strength steel cored aluminum alloy strands with different conductive materials, JLHA1 and NRLH2, are compared and analyzed. Moreover, this research systematically analyzed the influence of the conductive layer, materials of the stressed layer, different aluminum steel ratios, and the steel core strength of the ultra high strength steel cored aluminum alloy strand on the design of the selection of large-span conductors from aspects of transmission capacity, stress of aluminum part, and strength of steel cored. Furthermore, this study provides suggestions for the design of large-span conductors.
Key words: large-span transmission line; ultra high strength steel cored aluminum alloy strand; stress of aluminum part; aluminum steel ratio; strength of steel cored
參考文獻(xiàn)
[1] 華東電網(wǎng)有限公司. 華東電網(wǎng) 500 kV 大跨越輸電工程匯編[G]. 上海：《華東電力》編輯部，2007.
[2] 國(guó)家電網(wǎng)公司. 特高強(qiáng)鋼芯鋁合金絞線：Q/GDW 11275—2014[S]. 北京：中國(guó)電力出版社，2015：1.
[3] 黃欲成，陳池，汪峰，趙全江，柏曉路，文曉旭. 大跨越架空輸電導(dǎo)線鋼芯鋁股應(yīng)力分布特性研究[J] .三峽大學(xué)學(xué)報(bào)(自然科學(xué)版)，2016，38(4)：76-81.
[4] 鄭黎陽(yáng)，孫祖志. 鋁絞線和鋼芯鋁絞線的應(yīng)力分析[J]. 武漢水利電力大學(xué)學(xué)報(bào)，1997，30(3)：65-68.
[5] 張瑞永，趙新宇，李明，許志勇，吳鎖平，賈振宏. 輸電線路新型節(jié)能導(dǎo)線的推廣應(yīng)用[J] . 電力建設(shè)，2012，33(6)：89-92.
[6] 張慶. 輸電線路新型節(jié)能導(dǎo)線選型與技術(shù)經(jīng)濟(jì)比較分析[J]. 中國(guó)外資，2013(20)：385.
[7] 陽(yáng)隆富. 工程設(shè)計(jì)方案的經(jīng)濟(jì)比較——年費(fèi)用的計(jì)算[J]. 廣西電力工程，1996(3)：28-34.
[8] 能源行業(yè)電網(wǎng)設(shè)計(jì)標(biāo)準(zhǔn)化技術(shù)委員會(huì).110 kV～750 kV 架空輸電線路大跨越設(shè)計(jì)技術(shù)規(guī)程：DL/T5485—2013[S]. 北京：中國(guó)計(jì)劃出版社，2014：12.
[9] MORGAN V T . Electrical characteristics of steel-cored aluminum conductors[J].Proceedings of the Institution Electrical Engineers，1965，112(2)：325-334.
[10] ARNOLD A H M . The alternating-current resistance of tubular conductors[J].Journal of the Institution of Electrical Engineers，1936，78(473)：580-596.
[11] 張瑞永，趙新宇，陶禮學(xué). 架空導(dǎo)線的交流電阻計(jì)算方法對(duì)比[J]. 電線電纜，2014(4)：1-3.
