单相电流对三芯钢带铠装电缆载流量试验结果影响程度的研究  

Effect of Single-phase Current on the Current-carrying Capacity of Three-core Steel Armoured Cable

作　　者：牛海清[1] 张群峰[2] 游勇[1] 赵继光[2] 张尧[1] 

机构地区：[1]华南理工大学电力学院,广州510640 [2]广东电网公司佛山供电局,广东佛山528000

出　　处：《绝缘材料》2014年第2期89-92,共4页Insulating Materials

摘　　要：采用剥掉铠装层通以单相电流模拟三芯钢带铠装电缆通以三相电流,将敷设于电缆沟中的完整电缆段和剥掉铠装层电缆段串联加载不同的电流进行载流量试验,对比研究了两者的温度;根据电磁场理论,计算了载流量试验中的铠装损耗。按照IEC载流量计算标准,研究了铠装损耗对载流量影响的程度。研究表明,三芯铠装电缆加载单相电流时的铠装损耗不可忽略,但对载流量的影响不超过4%,且偏保守。The current-carrying capacity of three-core cable with and without steel armour layed in cabletrench was tested through applying different single-phase current, and their temperature was compared.The loss induced by armour of the test cable was calculated according to electromagnetic field theory.The effect of loss induced by armour on the current-carrying capacity was studied according to IECstandard of current-carrying capacity. The results show that the loss induced by armour of the three-corecable can’t be neglected when applying single-phase current, and the current-carrying capacity decreasesby about 4%, which is acceptable.

关 键 词：钢带铠装三芯电缆 单相电流 铠装损耗 载流量试验 

分 类 号：TM247[一般工业技术—材料科学与工程] TM206[电气工程—电工理论与新技术]