一种高效接地故障泄漏电流检测系统设计

A Highly Efficient Detection System of Leakage Currents of Grounding Faults

设计了一种接地故障泄漏电流检测算法及系统。利用脉宽直流技术模拟现场输电状态,对故障的特征、数据状态进行分析和智能判别,提高配网线路故障的处理水平和查找速度。同时建立数学模型,快速、有效地协助工作人员对输电线路进行故障处理。使用该检测系统后,2020~2022年之间故障排查平均用时约为4 h,送电一次成功率为69%。

This work explored the realization of a detection algorithm and system for leakage currents of transmission lines grounding faults.The system employed the technique of pulse width modulated DC power supply to imitate the scene of transmission.The fault features and data status were analysed and determined intelligently so that the process standard and the lookup speed of transmission fault could be increased.Meanwhile the mathematic model was created to deal with the transmission fault quickly and effectively with the worker.The use of the system achieved an average time of fault diagnosis of 4 hours from 2020 to 2022 and a first-attempt success rate of 69%.