架空导线允许短时过负荷时间和载流量计算模型研究  

The Calculation Model of Allowable Short-Term Current Overload Time and Ampacity of Overhead Conductors

作　　者：夏云峰[1] 郑秋[2] 黄国飞[2] 党朋[2] 刘斌[2] 

机构地区：[1]广东电网公司东莞供电局,广东东莞523008 [2]上海电缆研究所,上海200093

出　　处：《电线电缆》2014年第5期35-38,共4页Wire & Cable

摘　　要：利用导线短时过负荷条件下的动态热平衡方程,在对导线增加电流负荷后,计算导线最高允许温度对应的允许过负荷时间,并以广东地区夏季典型气象条件为例,对比分析了不同规格的钢芯铝绞线(ACSR)最高允许温度、允许过负荷时间、载流量增量之间的规律。The dynamic thermal equilibrium equation was applied in the condition of short-term current overload of o- verhead conductors. The maximum allowable overload time corresponding to the maximum allowable temperature of conductors were computed, aider increasing the current load. The laws between the maximum allowable temperature, maximum allowable overload time and ampacity increment were analyzed, comparing different specifications of ACSR in the summer typical weather conditions of Guangdong Province as an example.

关 键 词：架空导线 短时过负荷 载流量 动态增容技术 

分 类 号：TM244.2[一般工业技术—材料科学与工程]