| 金具对大截面导线握力的影响因素 |
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| 引用本文： | 万建成,刘胜春,刘臻,孙宝东,牛海军. 金具对大截面导线握力的影响因素[J]. 电力建设, 2012, 33(6): 84-88 |
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| 作者姓名： | 万建成 刘胜春 刘臻 孙宝东 牛海军 |
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| 作者单位： | 中国电力科学研究院 |
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| 基金项目： | 国家电网公司科技项目（SGKJJSKF[2008]480号） |
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| 摘 要： | 锦屏—苏南±800 kV特高压直流线路采用了液压式接续金具和耐张线夹，金具的握力应不小于95% RTS。900 mm2大截面钢芯铝绞线是4层铝股结构，而且JL/G3A-900/40导线铝钢比较大。研究了金具对大截面导线握力的影响因素，结果表明压接造成的单线强度损失是客观存在的，导线的铝钢比、单线强度是影响金具握力的主要因素。
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| 关 键 词： | 900 mm2大截面导线 压接保留率 单线强度 铝钢比 |
| 收稿时间： | 2011-11-24 |
Influence Factors of Fitting on Grip Strength of Large Cross- section Conductor |
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| WAN Jiancheng , LIU Shengchun , LIU Zhen , SUN Baodong , NIU Haijun. Influence Factors of Fitting on Grip Strength of Large Cross- section Conductor[J]. Electric Power Construction, 2012, 33(6): 84-88 |
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| Authors: | WAN Jiancheng LIU Shengchun LIU Zhen SUN Baodong NIU Haijun |
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| Affiliation: | (China Electric Power Research Institute, Beijing 102401, China) |
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| Abstract: | Jinping-Sunan ＋ 800 kV UHV DC line uses hydraulic splicing fitting and strain clamp, and the grip strength of fitting should be more than 95 % RTS. Because 900 mm2 large cross-sections ACSR was 4-layer aluminum stranded structure, especially the aluminum/steel ratio of JL/G3A- 900/40 conductor was larger, this paper mainly studied the influence factors of fitting on the grip strength of large cross-section conductor. The result shows that there is a wire strength loss caused by crimping, which is the main influence factor, as well as aluminum/steel ratio. |
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| Keywords: | 900 mm2 large cross -section conductor crimping retention rate wire strength aluminum/steel ratio |
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