导　　师： 许伯强;冀增华

学科专业： 0852

授予学位： 硕士

作　　者： ;

机构地区： 华北电力大学

摘　　要： 电力变压器的故障诊断对电力系统的安全运行意义重大，而振动监测作为一种非电量检测方法，能够准确反映出变压器器身的松散程度，为变压器的检修提供指导。本文结合电力变压器的组成结构，对变压器振动机理进行了深入研究，根据变压器绕组、铁芯振动在振幅、频率方面的不同，确定了与振动相关的监测量、特征值，并确定了变压器振动在线监测系统，基于MATLABT模糊逻辑功能设计出智能评估系统，从而实现对变压器不同相及各相的绕组、铁芯振动状态进行定位、定性及定量评价。通过对振动监测及评估系统进行试验，确定了该方法的正确性和有效性。 The fault diagnosis of power transformer is very important in power system. Thenthe vibration monitor is a differ method from electrical measure method, it could giveexpression to the incompact grade of transformer’s main body, and offer instructs totransformer maintenance. This paper studied and analyzed the method of vibration,according as the distinctness of swing and frequency between winding and core, thispaper designed the online monitor system base on vibration. Base on fuzzy logic functionthis paper designed the intelligence evaluation system. And then, the system realized theevaluation about vibration headstream’s position and scale. Finally, using theexperimentation of the power transformer, the results show that the system of monitorand evaluation is right and feasible.

关 键 词： 电力变压器 振动 在线监测 智能评估 模糊逻辑

分 类 号： [TM41]

领　　域： [电气工程]