浅析并联大电缆敷设对电气系统的影响

Influence of the Parallel Connected Cable Laying on the Electrical System

通过介绍某项目工程总变电室试运行时发生的电缆发热及电流不平衡,以及同时发生的变电室控制信号波动较大的现象,分析其故障原因,对同相的2根大截面电缆并联敷设进行计算验算,提出切实可行的解决办法,详细讲解了同相并联的高压大截面电缆的电感值不平衡的原因以及对电气系统正常运行的影响。

This paper describes the heating of the cable and current imbalance occurs when the project transformer room commissioning,And the control signal in transformer room fluctuations a lot. The cause of the malfunction was analyzed,by checking and calculations to the two large cross-section cables laid in parallel which in same phase,a practical solution was proposed. And the reason of inductance imbalanced to the high voltage cables with large cross-section parallel phase was explained.