基于多信息融合的故障电弧保护系统的应用研究

Study on Application of Arcing Protective System Faults Based on Multiple Information Fusion

在以故障电弧弧声、弧光、短路电流为表征信息的基础上,提出了一种新的电弧保护方案。以发生燃弧之前的弧声为判据,建立了故障电弧预警机制;以燃弧伴生信号弧光、短路电流为判据,建立了故障电弧的报警机制。实验表明,该系统可以对开关柜的故障电弧起到双重保护作用。

This paper mentioned a new method for the monitor system of arcing fault information of sound arc, arc based on the characterization and short-circuit current. The process of arcing fault protection was separated in two stages. First, arcing sound appeared before it burning, the system sent out early warning at once. If the fault was not precluded in time, then arcing light and short-circuit current would occur, meanwhile the system would send out warning. Second, the experimental platform was created, and its av^rag~ amplitude frequency spectrum was calculated. The wave peak of arcing light and short-circult current were detected, and appropriate threshold values were established by experiment. Experiment proves that the system can do double protection to arcing fault.