基于信息融合技术的小电流接地故障选线技术应用

Technical Application of Small Current Grounding Fault Line Selection Based on Information Fusion Technology

目前电力系统中应用的小电流接地选线装置,由于采用选线原理比较单一,而实际电网接地故障状况复杂,仅利用故障信号某一方面特征构造的单一选线方法具有片面性。文中分析了原接地选线装置应用现状,介绍了利用信息融合技术将多种选线方法互补融合策略原理生产的小电流接地选线装置,该装置经过在沧州供电公司挂网运行,选线效果良好。扭转了公司多年以来小电流接地选线装置准确率不高、运行不可靠的现状,提高了系统的稳定性。

Because the route selection principle is unitary, and the actual condition of power grid grounding fault is complex, the single line selection method of fault signal＇s one aspect of the characteristic structure is one-sidedness, in small current grounding line selection device of electric system. On the basis of characteristics of original grounding line selection method, this paper introduces the small current grounding fault line selection device based on information fusion technology. After running in network, the effect of line slection is good, which reverses the situation of low accuracy of small current grounding line selection device and unreliable operation in our company,and improves the system stability.