Mitigation of Lightning Flashover from Tree to Medium Voltage Aerial Cable Using Shield Wire
Mitigation of Lightning Flashover from Tree to Medium Voltage Aerial Cable Using Shield Wire
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DOI：
10.1109/tpwrd.2016.2585104
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发表时间：
2017-08
影响因子：
4.4
通讯作者：
M. Omidiora;M. Lehtonen
中科院分区：
文献类型：
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作者：
M. Omidiora;M. Lehtonen
本文通过实验室试验和数字模拟，研究了中压架空电缆的防雷性能。通过一系列的实验室试验，对屏蔽和非屏蔽架空电缆的雷电危害进行了实际检验，确定了屏蔽线防护的必要性。为了进行仿真研究，利用替代瞬态程序-电磁瞬态程序（ATP-EMTP）及其对控制系统特性的瞬态分析建立了数字模型。利用所建立的数字模型对架空电缆的雷电闪络过电压特性进行了评估。评估是通过考虑直接雷击在木杆，信使电线，和附近的树木。根据试验和仿真结果，提出了改善架空电缆耐雷性能的实用建议。这项研究提供了可能的解决方案，对架空电缆的雷击闪络，感应过电压和直接雷击，这可能会提高电力的可靠性和可用性的客户保护。
This paper presents the performance and protection of medium-voltage (MV) aerial cables against lightning faults by means of laboratory experiment and digital modeling. With the series of laboratory tests, practical examination of lightning hazard to shielded and unshielded aerial cables is conducted, and the need for shield wire protection is established. For the purpose of simulation studies, digital models are developed by using Alternative Transient Program-Electromagnetic Transient Program (ATP-EMTP) and its transient analysis of control system features. The performance of lightning flashover overvoltage on shielded and unshielded aerial cable is evaluated with the developed digital models. The evaluation is made by considering a direct lightning strike on wooden poles, messenger wires, and nearby trees. Based on the experimental and simulation results, practical recommendations are proposed for improvement in lightning performance of aerial cables. This study offers possible solutions for the protection of aerial cables against lightning flashover, induced overvoltage, and direct lightning strike, which may improve electricity reliability and availability to customers.