A study on structural damage of power cable jacket under external impact
YANG Shiying1，ZHU He1，HE Wen2，YU Xin3，YUAN Ming1
1.Graduate School, Northeast Electric Power University, Jilin 132012, China;
2.Dongguan Power Supply Bureau of Guangdong Power Grid Co., Ltd., Dongguan 523000, China;
3.Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510000, China
It is common for cable jackets to be damaged due to cable construction and other power grid construction.Most of the damage is structural damage, and there is currently a lack of information on cable sheath structure damage.Infrared spectroscopy is an efficient and fast modern analytical technique that uses detectors to detect light through a cable sample (XLPE), identifying sample structure and composition information.X-ray diffraction techniques are often used to characterize the crystallization information of polyethylene and to determine the stress on the sample.Structural damage caused structural dynamic parameter changes, and the frequency response function curvature was used as the cable sheath damage diagnosis factor.The results show that the content of three by-products in the XLPE samples damaged by external force was different from that in the undamaged areas.The magnitude of the stress is related to the change in the interplanar spacing.The damage location and the curvature value of the perfect frequency response function were observed through experiments to determine the damage location.
杨世迎1，祝贺1，何文2，余欣3，袁鸣1. 外部冲击下电力电缆护套结构性损伤研究[J]. 振动与冲击, 2020, 39(24): 122-127.
YANG Shiying1，ZHU He1，HE Wen2，YU Xin3，YUAN Ming1. A study on structural damage of power cable jacket under external impact. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(24): 122-127.
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