TITLE:
Experimental Study on the Cyclic Ampacity and Its Factor of 10 kV XLPE Cable
AUTHORS:
Xiaoliang Zhuang, Haiqing Niu, Junfeng Wang, Yong You, Guanghui Sun
KEYWORDS:
XLPE Cable; Experiment; Cyclic Ampacity; Software
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.4B,
November
18,
2013
ABSTRACT: The load varies periodically, but the peak current of
power cable is controlled by its continuous ampacity in China, resulting in the
highest conductor temperature is much lower than90℃,
the permitted long-term working temperature of XLPE. If the cable load is
controlled by its cyclic ampacity, the cable transmission capacity could be
used sufficiently. To study the 10 kV XLPE cable cyclic ampacity and its factor, a
three-core cable cyclic ampacity calculation software is developed and the
cyclic ampacity experiments of direct buried cable are undertaken in this
paper. Experiments and research shows that the software calculation is correct
and the circuit numbers and daily load factor have an important impact on the
cyclic ampacity factor. The cyclic ampacity factor of 0.7 daily load factor is
1.20, which means the peak current is the 1.2 times of continuous ampacity. If
the continuous ampacity is instead by the cyclic ampacity to control the cable
load, the transmission capacity of the cable can be improved greatly without
additional investment.