小电流接地系统馈线单相接地故障定位新装置

A New Device for Single-phase Grounding Fault Location of Distribution Feeders in Small Current Neutral Grounding System

研究了一种基于信息融合模糊推理,利用GSM网络的小电流接地系统馈线单相接地故障定位装置。该装置基于融合电流注入和零序电流幅值比较原理,应用模糊理论来实现定位,由主机、分支机和通信模块三部分构成。主机和分支机之间通过通信模块来实现通信,而通信模块采用了GSM网络的先进技术。与传统的定位装置相比,该装置故障定位准确性高,适用于复杂树形电网。

Based on information fusion and fuzzy reasoning, a new device for single-phase grounding fault location of distribution feeders in small current neutral grounding system is developed by using GSM （global system for mobile communication） network. The device using the fuzzy system integrates current injection theory with zero-sequence current range comparison to realize fault location. Mainframe, embranchment and communication module are the three parts of the device. The communication between mainframe and embranchment is achieved by GSM network. As compared with traditional fault location devices, the proposed system is accurate in fault location and applicable to complex tree networks.