| 覆冰交流输电线路保线电流及其影响因素分析 |
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| 引用本文： | 蒋兴良,林锐,张志劲,胡琴,孙才新.覆冰交流输电线路保线电流及其影响因素分析[J].电网技术,2009(19). |
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| 作者姓名： | 蒋兴良 林锐 张志劲 胡琴 孙才新 |
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| 作者单位： | 输配电装备及系统安全与新技术国家重点实验室(重庆大学); |
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| 基金项目： | 国家重点基础研究发展计划项目(973项目(2009CB724501); 重庆市科委自然科学基金计划资助项目(2008BB6157)~~ |
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| 摘 要： | 建立了导线覆冰过程的热平衡方程,同时考虑绞线几何外形及集肤效应对传热过程的影响,提出了基于焦耳热效应的输电线路导线保线电流计算公式,并采用Runge-Kutta算法对水滴运动轨迹进行模拟,得到碰撞系数这一关键参量值。仿真结果表明,保线电流是导线外径、导线电阻、表面几何外形等导线自身参数以及环境温度、风速、水滴中值体积直径、空气中液态水含量等大气参数的函数;得到了不同绞线在典型覆冰类型下的保线电流,与人工气候室的试验结果相吻合。将该模型的预测结果与其他模型进行了比较,进一步证明该模型的准确性。
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| 关 键 词： | 大气参数 覆冰 保线电流 运动轨迹 交流线路 |
Analysis on Anti-Icing Current and Its Impacting Factors for Ice-Coated AC Transmission Lines |
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| JIANG Xing-liang,LIN Rui,ZHANG Zhi-jin,HU Qin,SUN Cai-xin,Shapingba District,Chongqing ,China.Analysis on Anti-Icing Current and Its Impacting Factors for Ice-Coated AC Transmission Lines[J].Power System Technology,2009(19). |
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| Authors: | JIANG Xing-liang LIN Rui ZHANG Zhi-jin HU Qin SUN Cai-xin Shapingba District Chongqing China |
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| Affiliation: | JIANG Xing-liang,LIN Rui,ZHANG Zhi-jin,HU Qin,SUN Cai-xin(State Key Laboratory of Power Transmission Equipment & System Security and New Technology(Chongqing University),Shapingba District,Chongqing 400030,China) |
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| Abstract: | On the basis of analyzing the process of transmission line ice-coating, the thermal balance equation of this phenomenon is built, meanwhile the influences of geometric shape and skin-effect of steel-cored aluminum stranded wire on heat-transfer process are taken into account, and based on Joule heating effect the formula computing anti-icing current of transmission line is proposed.By use of Runge-Kutta algorithm the motion trajectory of water drop is simulated and the value of such a key parameter as colli... |
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| Keywords: | meteorological parameters icing anti-icing current motion trajectory AC transmission line |
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