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参考。
To monitoring the running state and carrying capacity of XLPE cable,the method for calculation of XLPE cable conductor temperature is studied in this paper. The lumped parameter steady-state thermal circuit model is established according to the characteristic of short laying distance of the power distribution cable and the formula of conductor temperature is derived,the effectiveness of the method is verified by experimental analysis. In the meantime,the method for calculation of conductor temperature considering the transient process is discussed,which can provide reference of on-line monitoring of running status of the cable.
出处
《东北电力技术》
2014年第3期1-3,17,共4页
Northeast Electric Power Technology
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
