光纤Bragg光栅在变压器振动监测中的测点选择  

Research of fiber Bragg grating in the transformer monitoring for measuring point selection

作　　者：李凯[1] 赵振刚[1] 蔡陈[1] 李英娜[1] 谢涛[1] 梁仕斌 彭庆军 李川[1] 

机构地区：[1]昆明理工大学信息工程与自动化学院,云南昆明650500 [2]云南电力试验研究院(集团)有限公司,云南昆明650217 [3]云南电网有限责任公司电力科学研究院,云南昆明650217

出　　处：《光学技术》2015年第4期318-321,共4页Optical Technique

基　　金：国家自然科学基金项目(KKGD201203004);云南省应用基础研究计划项目(2013FZ021);昆明理工大学人才培养基金资助项目(KKSY201303044)

摘　　要：为了实现对变压器振动的状态监测,需要选择有效位置布置测点。变压器主要由铁芯、绕组构成,并由夹具固定,在工作状态下产生振动,尤其在共振时振动过大会造成绕组及铁芯变形,从而导致运行故障。通过有限元分析,建立绕组及铁芯-绕组模型,得到绕组前三阶固有频率,分别为1749.1 Hz、1760.8 Hz、1911.3Hz,铁芯-绕组模型前三阶固有频率分别为70.807Hz、142.59Hz、163.73Hz,同时得到相应振动波形及谐响应曲线。通过分析可知,在进行铁芯-绕组整体振动监测时应将测点置于变压器顶端,而针对绕组监测时应将变压器置于绕组中部。In order to achieve the state monitoring of transformer vibration, it is need to select the effective positions to arrange for measuring points. Consisting mainly of iron cores and windings of the transformers are fixed by fixture, and it can cause vibrations in working conditions, especially when the resonance appeared, which causes excessive vibration. This vibration will cause the deformation of windings and iron cores, which will result in operational failure. Windings and iron core-winding models are established, and first three natural frequencies of the winding model are got, which are I749. 1Hz,1760. 8Hz,1911.3Hz, while the iron cores-winding model are 70. 807Hz,142. 59Hz,163. 73Hz, through finite element analysis. Besides, the corresponding vibration waveform and harmonic response curve can be received. Analysis shows that, during the iron core-winding model＇s overall vibration, measurement points should be monitored at the top of the transformer, while winding model, the sensors should be placed in the middle of the transformer

关 键 词：光学测量 光纤BRAGG光栅 铁芯-绕组 测点 有限元分析 

分 类 号：TN25[电子电信—物理电子学]