Analysis of Equivalent Circuit of Oil-Paper Insulation Transformer Relaxation Response and Aging Evaluation
Cai Jinding1, Liu Yongqing1, Cai Jia2
1.College of Electrical Engineering and Automation Fuzhou University Fuzhou 350108 China 2.Supplies Sub-Company State Grid Fujian Provincial Electric Power Co.Ltd. Fuzhou 350103 China
Abstract：A judgment method for the polarization branches number of the equivalent circuit of oil-paper insulation equipment is proposed.The differential dielectric spectroscopy method is applied to gradually decomposing the measured return voltage curves.In this way,all the sub-lines which are implicit in the internal relaxation response of the return voltage curves could be presented.Then the polarization branches number of extended Debye model is judged by the number of sub-lines.Results show that the more aging seriousness of the transformer oil-paper insulation is,the more numbers of the polarization branches and the higher relaxation polarization will be.The value of the relaxation polarization is small when the oil-paper insulation is in good condition.Otherwise,the value is greater.The proposed method is an effective way to evaluate the oil-paper aging using the equivalent circuit of relaxation response.
蔡金锭, 刘永清, 蔡嘉. 油纸绝缘变压器极化等效电路分析及其老化评估[J]. 电工技术学报, 2016, 31(15): 204-212.
Cai Jinding, Liu Yongqing, Cai Jia. Analysis of Equivalent Circuit of Oil-Paper Insulation Transformer Relaxation Response and Aging Evaluation. Transactions of China Electrotechnical Society, 2016, 31(15): 204-212.
[1] Jota P R S,Islam S M,Jota F G.Modeling the polarization spectrum in composite oil/paper insulation systems[J].IEEE Transactions on Dielectrics and Electrical Insulation,1999,6(2):145-151. [2] 田杰,段绍辉,许昊,等.温度及老化状态对油纸绝缘时域介电响应特性影响的实验研究[J].中国电机工程学报,2012,32(增1):69-75. Tian Jie,Duan Shaohui,Wu Hao,et al.Experiment research on effects of temperature and aging state on time domain dielectric response charateristics of oil-impregnated pressboard insulation[J].Proceedings of the CSEE,2012,32(Z1):69-75. [3] 林燕桢,蔡金锭.恢复电压极化谱特征量与油纸绝缘变压器微水含量关系分析[J].电力系统保护与控制,2014,42(5):148-153. Lin Yanzhen,Cai Jinding.Analysis of the relationship between the characteristics of the return voltage polarization spectrum and micro water content of oil-paper insulation transformer[J].Power System Protection and Control,2014,42(5):148-153. [4] Saha T K,Yao Z T.Experience with return voltage measurements for assessing insulation conditions in service-aged transformers[J].IEEE Transactions on Power Delivery,2003,18(1):128-135. [5] 唐盼.基于极化去极化电流法的变压器油纸绝缘状态研究[D].上海:上海交通大学,2012. [6] 杨雁,杨丽君,徐积全,等.用于评估油纸绝缘热老化状态的极化/去极化电流特征参量[J].高电压技术,2013,39(2):336-341. Yang Yan,Yang Lijun,Xu Jiquang,et al.Characteristic parameters for assessing aging condition of oil-paper insulation by polarization/depolarization current[J].High Voltage Engineering,2013,39(2):336-341. [7] 郑君亮,江修波,蔡金锭.去极化电流解谱分析油纸绝缘等效电路参数研究[J].电力系统保护与控制,2014,21(7):54-58. Zheng Junliang,Jiang Xiubo,Cai Jinding.Research on spectrum analysis of the depolarization current to identify the parameter of oil-paper insulation equivalent circuit[J].Power System Protection and Control,2014,42(21):54-58. [8] 江修波,黄彦婕,赖祥生.改进蚁群算法及其在变压器绝缘介质响应电路参数计算中的应用[J].高电压技术,2011,37(8):1982-1988. Jiang Xiubo,Huang Yanjie,Lai Xiangsheng.Improved ant colony algorithm and its application in parameter identification for dielectric response equivalent circuit of transformer[J].High Voltage Engineering,2011,37(8):1982-1988. [9] 林智勇,蔡金锭.变压器等效电路参数变化对极化谱的影响分析[J].电子测量与仪器学报,2014,28(3):292-298. Lin Zhiyong,Cai Jinding.Analysis for influence of transformer equivalent circuit parameters change on polarization spectrum[J].Journal of Electronic Measurement and Instrumentation,2014,28(3):292-298. [10]张涛,蔡金锭.应用极化谱分析油纸变压器绝缘纸板水分含量的研究[J].电工电能新技术,2009,28(4):46-49. Zhang Tao,Cai Jinding.Research on mositure content analysis of insulation pressboard in oil-paper transformer using polarization spectrum[J].Advanced Technology of Electrical engineering and Energy,2009,28(4):46-49. [11]李安娜,蔡金锭.油纸绝缘等效电路参数辨识与老化评估[J].电力科学与技术学报,2014,3(1):48-53. Li Anna,Cai Jinding,Equivalent circuit parameter identification and aging assessment for oil-paper insulation[J].Journal of Elecric Power Science and Technology,2014,3(1):48-53. [12]任磊,陈祥光,刘春涛.基于小波变换的时域介电谱分析及其应用[J].物理学报,2009,58(3):2035-2041. Ren Lei,Chen Xiangguang,Liu Chuntao.Analysis and application of time domain dielectric spectroscopy based on wavelet transform[J].Acta Physica Sinica,2009,58(3):2035-2041. [13]李景德,曹万强,李向前,等.时域介电谱方法及其应用[J].物理学报,1996,45(7):1225-1230. Li Jingde,Cao Wanqiang,Li Xiangqian,et al.Time domain dielectric spectroscopy method and its application[J].Acta Physica Sinica,1996,45(7):1225-1230. [14]金维芳.电介质物理学[M].北京:机械工业出版社,1995 [15]李景德,雷德铭.电介质材料物理和应用[M].广东:中山大学出版社,1992. [16]彭积成,蔡金锭.变压器油纸绝缘老化状态的探讨[J].高压电器,2015,51(5)132-138. Peng Jicheng,Cai Jinding.Study on the aging condition of transformer oil-paper insulation[J].High Voltage Apparatus,2015,51(5)132-138. [17]邹阳,蔡金锭.油纸绝缘变压器时域极化谱特性实验分析[J].电工技术学报,2015,30(12):307-313. Zou Yang,Cai Jinding.Experimental analysis on time-domain polarization spectrum of oil-paper insulation transformer[J].Transactions of China Electrotechnical Society,2015,30(12):307-313. [18]刘捷丰,廖瑞金,吕彦冬,等.电力变压器油纸绝缘含水量定量评估的时域介电特征量[J].电工技术学报,2015,30(1):212-219. Liu Jiefeng,Liao Ruijin,Lü Yandong,et al.Time domain dielectric characteristics for quantitative assessment of moisture content in transformer oil-paper insulation[J].Transactions of China Electrotechnical Society,2015,30(1):212-219. [19]廖瑞金,刘捷丰,杨丽君,等.电力变压器油纸绝缘状态评估的频域介电特征参量研究[J].电工技术学报,2015,30(6):247-254. Liao Ruijin,Liu Jiefeng,Yang Lijun,et al.Investigation on frequency domain dielectric characteristics for condition assessment of transformer oil-paper insulation[J].Transactions of China Electrotechnical Society,2015,30(6):247-254. [20]张涛.基于回复电压特征量的变压器油纸绝缘状态诊断研究[D].福州,福州大学,2010.
2016, Vol. 31 
