基于隧道磁阻传感器的GIS隔离开关双确认系统设计

为实现高压隔离开关分合闸位置的精确测量,文中基于隧道磁电阻效应的磁感应原理设计了一套GIS隔离开关分合闸位置监测系统,实现GIS隔离开关分合闸状态的精确判别,与传统辅助开关接点构成隔离开关分合闸位置的非同源位置"双确认"判据,为一键顺控操作提供辅助判别支撑,满足变电站设备操作安全可靠性要求.试验证明,文中设计的系统具有...

Design of Dual Confirmation System for GIS Disconnect Switches Based on Tunnel Magnetoresistive Sensors

In order to realize the accurate measurement of high-voltage disconnecting switch breaking and closing position,a GIS disconnecting switch breaking and closing position monitoring system based on the magnetic induction principle of tunnel magnetoresistance effect was designed in this paper,which realized the accurate discrimination of GIS disconnecting switch breaking and closing status and constituted a double confirmation of the non-homologous position of disconnecting switch breaking and closing position with the traditional auxiliary switch contact.The system provided auxiliary discriminative support for one-key control operation and met the requirements of safety and reliability of substation equipment operation.The test proves that the system designed in this paper has good stability,accuracy and reliability,and plays a certain role in promoting the engineering implementation of one-key smooth control operation in substations.