对云南电网部分线路增容改造方案的探讨  

Study on the capacity-increasing transformation of partial transmission lines in Yunnan power grid

作　　者：杨坤池 王洪利 Yang Kunchi Wang Honli(Yunnan power grid plan research center, Kunming 650011 Yunnan power grid Dehong Power Supply Bureau)

机构地区：[1]云南电网有限责任公司电网规划研究中心,昆明650011 [2]云南电网有限责任公司德宏供电局,云南德宏678400

出　　处：《云南电力技术》2017年第4期130-132,共3页Yunnan Electric Power

摘　　要：针对目前云南电网内部分已建线路导线载流量不能满足规划发展要求的问题,提出了采用更换增容导线的改造方案,确定了增容改造允许温度及定位弧垂温度的取值。并根据相关计算结果分析,得出了铝包钢芯耐热导线的弧垂特性能满足增容要求,同时线路损耗增量可控制在合理水平的结论。Aiming at the current carrying capacity of the partial built transmission lines can＇ t meet the need of the planning development, the author puts forward the method of capacity-increasing transformation, determine the allowable temperature and controlled arc sag temperature. And according to the analysis of the calculation results, we have got a conclusion that the arc sag characteristic of al clad steel reinforced heat-resistant aluminum alloy stranded wire can meet the need of the capacity-increasing transformation, and the power losses of the transmission lines can be limited at a reasonable level.

关 键 词：增容改造 铝包钢芯耐热导线 允许温度 定位弧垂温度 

分 类 号：TM75[电气工程—电力系统及自动化]