摘要
介绍了排管敷设方式的交联电缆载流量的理论计算,包括单根电缆,等负载等截面多根电缆,负载不等、线芯截面不同的电缆,部分电缆等截面、等负载,部分电缆不等负载、不同截面的4种情况下埋地排管敷设方式的电缆载流量计算公式,并与无锡供电公司排管敷设载流量试验结果相比较,理论计算值与试验值误差不超过7%,符合工程需要。
The paper introduced theoretical calculation of steady current-carrying capacity for XLPE cable of duct laying, including the cable current-carrying capacity calculation formula under 4 kinds of condition of duct laying, such as single cable; multi cable of equal load and equal section; the cable with different load and line core section; partial cables with equal load and equal section and partial cables with different load and line core section. The comparison with test result of current-carrying capacity for XLPE cable of duct laying in Wuxi Power Supply Co. shows that the error between theoretical calculation and test value does not exceed 7%, which accords with the needs of project.
出处
《电力设备》
2007年第9期6-11,共6页
Electrical Equipment
关键词
排管敷设
电缆
载流量
理论计算
温升
duct laying
power cable
current-carrying capacity
theoretical calculation
temperature rise
