Nonlinear Dielectric Response Characteristics of Damp Oil-Impregnated Pressboard Insulation and Application of H-W Model in Time-Frequency Conversion
Deng Yingxin1, Yang Lijun1, Yan Feidong2, Qin Zhen1, Li Wei1
1. State Key Laboratory of Power Transmission Equipment and System Security and New Technology Chongqing University Chongqing 400044 China; 2. Shandong Power Equipment Company Jinan 250000 China
Abstract In order to improve the low-frequency data acquisition efficiency of frequency-domain dielectric spectrum (FDS) for oil-paper insulation, the measured insulation is usually equivalent to a linear system, and the extended Debye model or Fourier transform is used to convert the time-domain data to low-frequency dielectric spectrum. However, when oil-paper insulation exhibits nonlinearity, the existing time-frequency domain conversion methods will cause large errors. In this paper, the influence of moisture on the nonlinear characteristics of the insulation is studied, and the time-frequency domain conversion effects of the extended Debye model and Fourier transform are verified. The results show that moisture will cause the nonlinear characteristic of oil-paper insulation. The two formal methods cannot be equivalent to non-linear insulation, and the conversion results have errors. Thus, Hammerstein-Wiener equivalent mathematical model is proposed. The results show that the model can well characterize the nonlinear characteristics of the dielectric response of oil-paper insulation, and its time-frequency domain conversion results also have higher precision.
Deng Yingxin,Yang Lijun,Yan Feidong等. Nonlinear Dielectric Response Characteristics of Damp Oil-Impregnated Pressboard Insulation and Application of H-W Model in Time-Frequency Conversion[J]. Transactions of China Electrotechnical Society, 2020, 35(21): 4609-4619.
[1] 杨丽君, 王松华, 郑含博, 等. 多频正弦电压激励的快速频域介质响应测试及波形参数优化方法[J]. 电工技术学报, 2018, 33(1): 175-184. Yang Lijun, Wang Songhua, Zheng Hanbo, et al.A fast frequency domain dielectric spectroscopy method under multisine voltage excitation and waveform parameters optimization[J]. Transactions of China Electrotechnical Society, 2018, 33(1): 175-184. [2] 蔡金锭, 叶荣, 陈汉城. 回复电压多元参数回归分析的油纸绝缘老化诊断方法[J]. 电工技术学报, 2018, 33(21): 5080-5089. Cai Jinding, Ye Rong, Chen Hancheng.Aging diagnosis method of oil-paper insulation based on multiple parameter regression analysis of recovery voltage[J]. Transactions of China Electrotechnical Society, 2018, 33(21): 5080-5089. [3] Saha T K.Review of time-domain polarization measurements for assessing insulation condition in aged transformers[J]. IEEE Transactions on Power Delivery, 2003, 18(4): 1293-1301. [4] 高竣, 廖瑞金, 王有元, 等. 基于扩展Debye模型的变压器油纸绝缘老化特征量研究[J]. 电工技术学报, 2016, 31(4): 211-217. Gao Jun, Liao Ruijin, Wang Youyuan, et al.Ageing characteristic quantities of oil-paper insulation for transformers based on extended Debye model[J]. Transactions of China Electrotechnical Society, 2016, 31(4): 211-217. [5] 杨丽君, 彭攀, 高竣, 等. 基于频域介电响应特征指纹的油纸绝缘受潮及老化状态区间识别[J]. 电工技术学报, 2018, 33(9): 2105-2114. Yang Lijun, Peng Pan, Gao Jun, et al.The range recognition of moisture and aging status of oil-paper insulation based on frequency domain dielectric response characteristic fingerprint[J]. Transactions of China Electrotechnical Society, 2018, 33(9): 2105-2114. [6] 张明泽, 刘骥, 齐朋帅, 等. 基于介电响应技术的变压器油纸绝缘含水率数值评估方法[J]. 电工技术学报, 2018, 33(18): 4397-4407. Zhang Mingze, Liu Ji, Qi Pengshuai, et al.Numerical evaluation method for moisture content of trans- former oil-paper insulation based on dielectric response technique[J]. Transactions of China Electro- technical Society, 2018, 33(18): 4397-4407. [7] 高竣. 基于介电指纹特征识别的变压器主绝缘老化与受潮状态评估研究[D]. 重庆: 重庆大学, 2017. [8] 张涛, 左倩, 任乔林, 等. 油纸绝缘非标准极化谱的中心时间常数提取[J]. 电机与控制学报, 2018, 22(8): 82-88. Zhang Tao, Zuo Qian, Ren Qiaolin, et al.Central time constant of nonstandard polarization spectrum of oil-paper insulation[J]. Electric Machines and Control, 2018, 22(8): 82-88. [9] Saha T K, Purkait P.Investigation of polarization and depolarization current measurements for the assessment of oil-paper insulation of aged transformers[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2004, 11(1): 144-154. [10] 贺德华, 蔡金锭, 黄云程. 基于等效电路参数特征量的油纸绝缘老化状态评估[J]. 电机与控制学报, 2017, 21(6): 44-49. He Dehua, Cai Jinding, Huang Yuncheng.Study on insulation condition of power transformer based on the equivalent circuit characteristic parameters[J]. Electric Machines and Control, 2017, 21(6): 44-49. [11] Zhao Haoxiang, Yang Li, Wen Jiaye, et al.Diagnosis of moisture content in oil-immersed paper based on dielectric loss with variable voltage at power frequ- ency[C]//International Conference on Dielectric Liquids, Roma, 2019: 1-4. [12] Sha Yanchao, Zhou Yuanxiang, Nie Dexin, et al.A study on electric conduction of transformer oil[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2014, 21(3): 1061-1069. [13] Yang Xu, Nielsen S, Ledwich G.Investigations of dielectric monitoring on an energised transformer oil- paper insulation system[J]. IET Science, Measurement & Technology, 2015, 9(1): 102-112. [14] 董明, 王丽, 吴雪舟, 等. 油纸绝缘介电响应检测技术研究现状与发展[J]. 高电压技术, 2016, 42(4): 1179-1189. Dong Ming, Wang Li, Wu Xuezhou, et al.Status and progress in study of dielectric response technology for oil-paper insulation[J]. High Voltage Engineering, 2016, 42(4): 1179-1189. [15] Koch M, Feser K, Reliability and influences on dielectric diagnostic methods to evaluate the aging state of oil-paper insulations[C]//International Con- ference on Advances in Processing, Testing and Appli- cation of Dielectric Materials, Wrocław, 2004: 1-7. [16] Ashkezari A D, Ma H, Saha T K, et al.Investigation of non-linearity in dielectric response measurements for transformer insulation diagnosis[C]//IEEE PES Innovative Smart Grid Technologies, Perth, 2011: 1-7. [17] Yang Lijun, Chen Junru, Wang Songhua, et al.Dielectric response measurement of oil-paper insu- lation based on system identification and its time- frequency-domain conversion method[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2018, 25(5): 1688-1698. [18] 杜林, 冉鹂蔓, 蔚超, 等. 基于扩展德拜模型的油纸绝缘受潮频域特征量研究[J]. 电工技术学报, 2018, 33(13): 3051-3058. Du Lin, Ran Liman, Yu Chao, et al.Study on frequency domain characteristics of moisture in oil- paper insulation based on extended Debye model[J]. Transactions of China Electrotechnical Society, 2018, 33(13): 3051-3058. [19] 陈晶. 一类非线性系统的参数辨识方法研究[D]. 江苏: 江南大学, 2013. [20] Godfrey K R.Introduction to non-binary signals in system identification[C]//International Conference on Control, Edinburgh, 1991: 161-166. [21] 艾余雄, 寇艳红. 一种基于FPGA的高斯白噪声发生器的设计与实现[J]. 遥测遥控, 2009, 30(6): 36-40. Ai Yuxiong, Kou Yanhong.Design and imple- mentation of a gaussian white noise generator based on FPGA[J]. Journal of Telemetry, Tracking and Command, 2009, 30(6): 36-40. [22] 谭建国. 泊松白噪声激励下的随机时滞系统的数值解及应用研究[D]. 天津: 天津大学, 2010. [23] Yang Lijun, Chen Junru, Jun Gao, et al.Accelerating frequency domain dielectric spectroscopy measurements on insulation of transformers through system identi- fication[J]. IET Science, Measurement & Technology, 2018, 12(2): 247-254. [24] Chittora P, Singh A, Singh M.Gauss-Newton-based fast and simple recursive algorithm for compensation using shunt active power filter[J]. IET Generation, Transmission & Distribution, 2017, 11(6): 1521-1530. [25] 何昆鹏, 王晨阳, 王晓雪. 基于高斯牛顿迭代的MIMU误差参数辨识[J]. 沈阳工业大学学报, 2015, 37(3): 318-323. He Kunpeng, Wang Chenyang, Wang Xiaoxue.Error parameter identification of MIMU based on Gauss- Newton iteration[J]. Journal of Shenyang University of Technology, 2015, 37(3): 318-323. [26] 朱德恒, 严璋. 高电压绝缘[M]. 北京: 清华大学出版社, 1992. [27] Levinson L M, Philipp H R.The physics of metal oxide varistors[J]. Journal of Applied Physics, 1975, 46(3): 1332-1341.
2020, Vol. 35 
