摘要
为实时掌握交联聚乙烯(XLPE)配电电缆的运行状态及其载流量,对电缆线芯温度的计算方法进行了研究。针对配电电缆敷设距离较短的特点建立了单芯电缆集中参数稳态等效热路模型,并推导出线芯温度计算公式,通过实验验证了计算方法的有效性,同时对考虑暂态过程的电缆线芯温度计算方法进行了讨论,为电缆运行状态的在线监测提供了参考。
To monitor the operation state and carrying capacity of XLPE cable, the method for calculation of XLPE ca- ble conductor temperature was studied in this paper. The lumped parameter steady-state equivalent thermal circuit model of single core cable was established according to the characteristic of short laying distance of power distribution cable and the formula of conductor temperature was derived, the validity of the method was verified by experiment. In the time,the method for calculation of conductor temperature considering the transient process was discussed,which can provide reference for on-line monitoring of operation status of cables.
出处
《华北电力技术》
CAS
2014年第4期8-11,17,共4页
North China Electric Power
基金
湖南省自然科学基金项目(2011JJ5027)
关键词
XLPE电缆
线芯温度
热路模型
暂态线芯温度
XLPE cable
cable conductor temperature
thermal circuit model
transient conductor temperature
