基于仿真方法对矿井交流杂散电流产生机理分析

Analysis on the Generation Mechanism of AC Stray Current in Mine about Simulation Method

为降低井下交流杂散电流危害,从理论上分析了井下供电系统因三相电阻抗不对称产生交流杂散电流机理,利用计算机软件仿真模拟了高低压电缆交流杂散电流在屏蔽层与地线芯、金属网、接地极中不同平衡系数下的分布规律。仿真证明,低压电缆与金属网连接处、高压电缆与接地处应作为交流杂散电流防治重点,为矿井减小交流杂散电流提供了理论指导。

In order to reduce the harm of AC stray current in underground power supply system, the mechanism of AC stray current in underground power supply system due to asymmetric three-phase impedance was analyzed theoretically. The distribution law of AC stray current in shielding layer, wire core,metal net and grounding pole was simulated by computer software. The connection between low-voltage cable and metal network, high-voltage cable and grounding should be the focus of AC stray current prevention and control, which provides theoretical guidance for mine to reduce AC stray current.