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带电分闸220 V空载电缆的电弧电流暂态仿真研究
Arc Current Transient Simulation of Live Breaking 220 V Non-Loaded Cables

DOI: 10.12677/TDET.2020.91002, PP. 8-17

Keywords: 带电分闸，220 V空载电缆，电弧黑盒模型，电弧电流
Live Breaking, 220 V Non-Loaded Cables, Arc Black-Box Model, Arc Current

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Abstract:

为了研究带电分闸220 V空载电缆时断口产生电弧的暂态过程及其影响因素，本文首先建立了改进的电弧黑盒模型，在该模型的基础上，采用ATP？EMTP软件搭建了带电分闸220 V空载电缆仿真电路，研究了分闸初相角、电缆长度、导体层半径改变对电弧电流暂态过程的影响，仿真结果表明：电缆长度越长、导体层半径越大，分闸操作产生的电弧电流越大，而分闸初相角变化对电弧电流基本没有影响。通过本文的仿真研究，能够为带电分闸220 V电压等级的空载电缆线路提供一定的理论指导。
In order to study the transient process and influencing factors of electric arc produced by live breaking 220 V non-loaded cables, an improved arc black-box model is established in this paper. On the basis of this model, the simulation circuit of live breaking 220 V non-loaded cables is built by using ATP-EMTP software. The influence of the change of the opening initial phase angle, cable length and conductor layer radius on the transient process of electric arc current is studied. The simulation results show that the longer the cable length and the larger the radius of the conductor layer, the greater the arc current generated by the opening operation, and the change of the opening initial phase angle basically has no effect on the arc current. Through the simulation research in this paper, it can provide some theoretical guidance for live breaking the non-loaded cables with the voltage level of 220 V.

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