基于负荷侧电流采集的变压器故障监测报警装置设计

Design of Current Collection and Fault Alarm Device on Load Side of Transformer

为了提高变压器运行的安全性,避免由于变压器跳闸而影响线路正常运行,设计一种变压器负荷侧电流采集故障报警装置,对变压器故障进行监测。采用电流传感器,实时采集低压侧电流储存在储存器内,并设置太阳能充电板储存电能;设计操作系统模块、协议开发平台以及应用模块分析电表的电量故障,并进行故障报警。针对电流采集装置常见的断相、失流、失压这3种故障问题,设计实验并验证了设计的变压器负荷侧电流采集故障报警装置可及时把故障发送到检修部门,捕获故障时间基本保持在1 s左右,在有效地提高变压器故障监测工作效率的同时,还能提高故障监测的精准度。能够避免配电变压器事故的发生,减少因变压器跳闸而产生的线路故障,为配电线路的运行安全提供技术支持与安全保障。

In order to improve the safety of transformer operation and avoid affecting the normal operation of the line due to transformer tripping,a transformer load side current acquisition fault alarm device was designed to monitor the transformer fault.The current sensor was used to collect the current at the low-voltage side in real time and store it in the memory,and the solar charging panel was set to store electric energy.The operating system module,protocol development platform and application module were designed to analyze the power failure of the meter and give a fault alarm.Aiming at the three common fault problems of phase failure,current loss and voltage loss of the current acquisition device,the experiment was designed and verified that the transformer load side current acquisition fault alarm device designed could send the fault to the maintenance department in time,and the fault capture time was basically maintained at about 1 s.The device can not only effectively improve the efficiency of transformer fault monitoring,but also improve the accuracy of fault monitoring.It can timely avoid the occurrence of distribution transformer accidents,reduce line faults caused by transformer tripping,and provide technical support and safety guarantee for the operation safety of distribution lines.