基于TEV法的开关柜局部放电在线监测终端

摘要

Intellectualization,low cost and easy hot-line installation is the development direction of on-line partial discharge monitoring for switch cabinets of power distribution networks.This paper develops a portable on-line partial discharge terminal for switch cabinets.Based on the transient earth voltage method,the monitoring terminal realizes real-time display and human-computer interaction.It has wide universality,for it can work independently or can be expanded according to the number of monitored objects to complete networking on its own.We adopt ZigBee wireless ad hoc network technology to provide data upload channels so as to realize data communication with the monitoring computer at the station.%智能化、低成本、易带电安装是配电网开关柜局放在线监测的发展方向.设计了一种便携式开关柜局放在线监测终端.基于暂态地电压法,实现了实时显示和人机交互,可独立工作,也可根据监测对象数目扩展,自行组网,通用性强.采用ZigBee无线自组网技术,提供数据上传通道,实现与站内监控计算机的数据通信.