变压器空载合闸振动信号递归图分析  

Recursive graph analysis of transformer no load closing vibration signal

作　　者：张勇 李勇 杨应昊 陈冰冰 马宏忠[2] ZHANG Yong;LI Yong;YANG Yinghao;CHEN Bingbing;MA Hongzhong(Nanjing Power Supply Branch,State Grid Jiangsu Electric Power Company,Nanjing 210000;College of Energy and Electrical Engineering,Hohai University,Nanjing 210000)

机构地区：[1]国网江苏省电力公司南京供电分公司,南京210000 [2]河海大学能源与电气学院,南京210000

出　　处：《电气技术》2021年第8期34-38,共5页Electrical Engineering

基　　金：国网江苏省电力有限公司重点科技项目(J2020042)。

摘　　要：充分分析变压器振动信息中包含的状态信息是目前变压器研究中的一个重要课题。传统的频域分析方法忽略了某些信号的频率信息。结合桥梁等建筑领域的经验,本文利用相空间重构技术和定量递归图方法基于振动时间序列恢复原来振动系统的响应特性。在此基础上,利用主成分分析方法量化变压器的振动稳定性,并与典型平稳信号进行对比。实验结果表明,本文提出的稳定性评价方法确实反映了变压器的稳定性。It is still an important subject to analyze the state information in the vibration information of transformer.The traditional frequency domain analysis method ignores the frequency information of some signals.Combined with the experience of bridges and other construction fields,the response characteristics of the original vibration system are restored based on vibration time series by using phase space reconstruction technology and quantitative recursive graph method.On this basis,the vibration stability of the transformer is quantified by using principal component analysis,which is compared with typical stationary signals.The experimental results show that the proposed stability evaluation method can reflects the stability of the transformer.

关 键 词：变压器 空载合闸 递归图 相空间重构 

分 类 号：TM41[电气工程—电器]