基于振动分析法的变压器在线监测  

On-line Supervision of transformer monitoring based on vibration analysis method

作　　者：傅坚[1] 

机构地区：[1]上海市电力公司超高压输变电公司,上海200063

出　　处：《上海电力》2011年第1期36-38,共3页Shanghai Electric Power

摘　　要：文章研究了变压器的振动原理,提出了变压器振动简化模型。基于现场试验数据,用最小二乘法进行参数拟合,得到振动模型参数,可作为指纹参数,由任意时刻电压、电流幅值计算求得变压器振动幅值,根据与实际振动信号幅值相比较,判断变压器故障与否。实践证明,该方法预估的变压器振动信号具有很高精确度,在变压器在线监测绕组与铁心状态中有良好的应用前景。The vibration theory for transformers was analyzed,and the simplified transformer vibration model was proposed.The least-squres method was used for parameter fitting from field measured data to get the vibration model parameters as the fingerprint parameter to calculate the vibration amplitude from the voltage and current magnitudes at any time.The calculated amplitude was then compared with actual vibration amplitude to judge transformer faults.Practice showed that the predicted transformer vibration signals obtained are accurate.

关 键 词：变压器 振动 在线监测 最小二乘法 

分 类 号：TM406[电气工程—电器]