基于振动的超声波无线放电定位系统设计

Design of Ultrasonic Wireless Discharge Positioning System Based on Vibration

变电站GIS设备在绝缘耐压试验中若发生放电现象,需要整体拆卸或分段加压确定放电位置,导致工作人员检修时间长,甚至影响工程进度。设计了一套基于超声波的无线放电定位系统,该系统采用振动加速度传感器监测压力波的幅值和累加值确定放电位置,采用放电数据频谱分析确定故障类型。搭建252 k VGIS设备试验平台模拟三种典型放电故障,试验结果证实该系统能够迅速帮助现场人员确定放电位置及放电类型,减少设备维修时间,减轻人员工作量,加快工程进度。

If discharge occurs during the test,the overall disassembly or segmentation pressurization is required to determine the discharge position,resulting in long maintenance time for the staff and even affecting the progress of the project.This paper designed a set of vibration discharge positioning system adopting the vibration acceleration sensor to monitor the amplitude and accumulated value of the pressure wave to determine the discharge position.The fault type was determined by the spectrum analysis of the discharge data.The 252 kV GIS equipment test platform was built to simulate three typical discharge faults.The test results confirmed that the system can quickly help the field personnel to determine the discharge position and discharge type,which can reduce the maintenance time of the equipment,reduce the workload of the personnel,and speed up the project progress.