基于微分解谱的油纸绝缘多弛豫频温机理与归一化研究

doi:10.19595/j.cnki.1000-6753.tces.240328

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Abstract In order to investigate the impact of temperature on the frequency domain dielectric spectrum of oil-paper insulation and to develop an effective frequency-temperature normalization method to mitigate test temperature errors induced by various environmental factors, this study employs a first-order differential mapping of the real part of the complex capacitance to categorize three types of relaxation intervals. It integrates the Kramers-Kronig(K-K) transform and the derivative equations of the Arrhenius model to examine the mechanism of multiple relaxation frequencies and temperature. Additionally, it proposes a frequency-temperature normalization approach to restore dielectric mapping at standard temperature.
Aiming at the frequency domain dielectric testing of oil-paper insulation in the frequency domain of the mechanism is not clear, the insulation medium contains different relaxation between the activation energy difference is significant, resulting in the use of a single activation energy for the frequency and temperature shifting of the "master curve" method will cause a large error and other issues, this paper carries out the oil-paper insulation frequency and temperature mechanism and the study of the normalization. The following operations are carried out for the frequency domain dielectric data measured at two different temperatures, firstly, the K-K transformation is carried out on the real and imaginary parts of the complex capacitance data, and the geometric capacitance and conductivity contributions at different temperatures are normalized and fitted, and then, by means of the first-order differentiation of the real part of the polarized complex capacitance, the frequency point at the peak of the differentiation spectral line, the frequency point at the nearly temperature-independent peak dominated by high-frequency dipole polarization, are taken out as benchmarks to divide the low-frequency frequency and the high-frequency frequency. The low and middle frequency bands are then deconvolved to separate the different relaxations and calculate their relaxation time constants and relaxation activation energies. Finally, the characteristic quantities of the two sets of test data are brought into the Arrhenius derivative equation to obtain the frequency-temperature shift factor of each component, and then the frequency shift is performed to restore the frequency-domain dielectric spectra at the standard temperature.
Through the analysis of actual experimental data, the effectiveness of the method is proven, leading to the following conclusions: (1) Unlike the traditional "master curve" method, the temperature normalization strategy proposed in this paper provides a rigorous explanation of the frequency-temperature mechanism. The normalization strategy, based on the analysis of the variability of multi-relaxation activation energies, is an effective approach to achieve high-precision correction of the maps. (2) The activation energies of the low-frequency relaxation region, the middle-low-frequency region, and the high-frequency relaxation region are obviously different. Among them, the activation energies of the middle and low-frequency relaxation regions also differ, showing a trend of gradually decreasing with increasing frequency. (3) The strategy proposed in this paper has good applicability to samples with different insulation aging states. At the same time, it is found that the activation energy for relaxation decreases with the degree of aging. This indicates that the sensitivity of various relaxation processes to aging conditions is not uniform, providing a solid theoretical foundation for future studies on diagnosing insulation aging.

Key words： Oil paper insulation microdisintegration spectrum relaxation activation energy frequency domain dielectric method frequency-temperature normalization

Received: 03 March 2024

PACS:	TM85
	TM411

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	Zou Yang
	Huang Yu
	Fang Menghong
	Yao Yujia
	Jin Tao

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Zou Yang,Huang Yu,Fang Menghong等. Study on the Mechanism and Normalization of Multi-Relaxation Frequency Temperature of Oil-Paper Insulation Based on Microdecomposition Spectrum[J]. Transactions of China Electrotechnical Society, 2025, 40(5): 1575-1586.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.240328 OR https://dgjsxb.ces-transaction.com/EN/Y2025/V40/I5/1575

[1] 邹阳, 林锦煌, 何津, 等. 基于频谱解构法的油纸绝缘扩展德拜模型参数辨识[J]. 电工技术学报, 2023, 38(3): 622-632.
Zou Yang, Lin Jinhuang, He Jin, et al.Parameter identification of oil paper insulation extended Debye model based on spectrum deconstruction method[J]. Transactions of China Electrotechnical Society, 2023, 38(3): 622-632.
[2] 梁一霖, 张明泽, 刘骥, 等. 复杂运行条件下非均匀老化油纸绝缘典型电场变化特性[J]. 高电压技术, 2024, 50(4): 1731-1741.
Liang Yilin, Zhang Mingze, Liu Ji, et al.Variation characteristics of typical electric field of non-uniform aging oil-paper insulation under complex operating conditions[J]. High Voltage Engineering, 2024, 50(4): 1731-1741.
[3] 赵洪山, 常杰英, 曲岳晗, 等. 基于二元非线性Wiener随机过程的变压器油纸绝缘剩余寿命预测方法[J]. 电工技术学报, 2023, 38(15): 4040-4049.
Zhao Hongshan, Chang Jieying, Qu Yuehan, et al.Residual life prediction method of transformer oil-paper insulation based on binary nonlinear Wiener random process[J]. Transactions of China Electrotechnical Society, 2023, 38(15): 4040-4049.
[4] 姚欢民, 穆海宝, 张大宁, 等. 时变温度下油纸绝缘频域介电谱曲线校正方法研究[J]. 电工技术学报, 2023, 38(1): 246-257.
Yao Huanmin, Mu Haibao, Zhang Daning, et al.Study on the frequency domain spectroscopy curves correction method of oil-paper insulation at time-varying temperature[J]. Transactions of China Electrotechnical Society, 2023, 38(1): 246-257.
[5] 黄猛, 李怡然, 吴延宇, 等. 计及界面电荷和极性效应的油纸复合绝缘非线性电路等效模型[J]. 电工技术学报, 2024, 39(11): 3422-3432.
Huang Meng, Li Yiran, Wu Yanyu, et al.Equivalent nonlinear circuit model with interface charge and polarity effect for oil-paper composite insulation[J]. Transactions of China Electrotechnical Society, 2024, 39(11): 3422-3432.
[6] 刘道生, 周春华, 丁金, 等. 变压器纳米改性油纸复合绝缘研究综述[J]. 电工技术学报, 2023, 38(9): 2464-2479, 2490.
Liu Daosheng, Zhou Chunhua, Ding Jin, et al.Research overview of oil-paper composite insulation modified by nano particles for transformer[J]. Transactions of China Electrotechnical Society, 2023, 38(9): 2464-2479, 2490.
[7] Xu Qingchuan, Wang Shengkang, Lin Fuchang, et al.Extracting frequency spectroscopy of oil-immersed paper based on havriliak-negami model without known insulation structure of transformer[J]. IEEE Transactions on Instrumentation and Measurement, 2022, 71: 1-12.
[8] 张国治, 闫伟阳, 王堃, 等. 流动绝缘油中纤维杂质颗粒运动特性仿真研究[J]. 电工技术学报, 2023, 38(9): 2500-2509.
Zhang Guozhi, Yan Weiyang, Wang Kun, et al.Simulation research on movement characteristics of fiber impurity particles in flowing insulating oil[J]. Transactions of China Electrotechnical Society, 2023, 38(9): 2500-2509.
[9] Liao Ruijin, Liu Jiefeng, Yang Lijun, et al.Quantitative analysis of insulation condition of oil-paper insulation based on frequency domain spectroscopy[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2015, 22(1): 322-334.
[10] Zhang Yiyi, Liu Jiefeng, Zheng Hanbo, et al.Feasibility of a universal approach for temperature correction in frequency domain spectroscopy of transformer insulation[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2018, 25(5): 1766-1773.
[11] 高竣, 王有元, 齐超亮, 等. 温度改变方式对应用频域介电谱法评估油纸绝缘状态的影响[J]. 电工技术学报, 2015, 30(24): 255-261.
Gao Jun, Wang Youyuan, Qi Chaoliang, et al.Effect of temperature change mode on condition assessment of oil-paper insulation based on frequency-domain dielectric spectroscopy method[J]. Transactions of China Electrotechnical Society, 2015, 30(24): 255-261.
[12] Linhjell D, Lundgaard L, Gafvert U.Dielectric response of mineral oil impregnated cellulose and the impact of aging[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2007, 14(1): 156-169.
[13] Liu J, Fan X, Zheng H, et al.Aging condition assessment of transformer oil-immersed cellulosic insulation based upon the average activation energy method[J]. Cellulose, 2019, 26(6): 3891-3908.
[14] 高岩峰, 梁曦东, 仵超, 等. 介电响应分析中温度归一化获得标准曲线的方法、意义及应用[J]. 中国电机工程学报, 2017, 37(15): 4530-4537.
Gao Yanfeng, Liang Xidong, Wu Chao, et al.Application and significance of the master curve obtained by temperature normalization method in the analysis of dielectric response[J]. Proceedings of the CSEE, 2017, 37(15): 4530-4537.
[15] 谢佳成, 夏昌杰, 董明, 等. 频域介电谱温度归一化微观机理及优化策略研究[J]. 高电压技术, 2021, 47(7): 2416-2424.
Xie Jiacheng, Xia Changjie, Dong Ming, et al.Microscopic mechanism and optimized strategy for temperature normalization process of frequency domain spectroscopy[J]. High Voltage Engineering, 2021, 47(7): 2416-2424.
[16] Fofana I, Hemmatjou H, Meghnefi F, et al.On the frequency domain dielectric response of oil-paper insulation at low temperatures[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2010, 17(3): 799-807.
[17] Varakantham S R, Kliem H.Dielectric relaxational phenomena in interacting composite structures[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2021, 28(3): 845-852.
[18] 殷之文. 电介质物理学[M]. 2版. 北京: 科学出版社, 2003.
[19] Hoffmann G, Poliszko S.Temperature-frequency transformation in dielectric thermal analysis (DETA) of wood relaxation properties[J]. Journal of Applied Polymer Science, 1996, 59(2): 269-275.
[20] 杨丽君, 齐超亮, 邓帮飞, 等. 采用修正Cole-Cole模型提取油纸绝缘频域介电谱的特征参量方法[J]. 高电压技术, 2013, 39(2): 310-317.
Yang Lijun, Qi Chaoliang, Deng Bangfei, et al.Application of modified Cole-Cole model to extract characteristics of frequency dielectric spectroscopy of oil-paper insulation[J]. High Voltage Engineering, 2013, 39(2): 310-317.
[21] 高岩峰, 卢毅, 梁曦东, 等. Kramers-Kronig变换在介电响应分析中的数值计算方法、意义及应用[J]. 中国电机工程学报, 2020, 40(1): 318-329.
Gao Yanfeng, Lu Yi, Liang Xidong, et al.Numerical computational method, application and significance of the Kramers-Kronig transform in the analysis of dielectric response[J]. Proceedings of the CSEE, 2020, 40(1): 318-329.
[22] 张璐, 李洋, 穆海宝, 等. 冲击电压激励下变压器套管介电响应快速测量方法[J]. 高压电器, 2023, 59(6): 147-153.
Zhang Lu, Li Yang, Mu Haibao, et al.Fast measurement method of dielectric response of transformer bushing under impulse voltage excitation[J]. High Voltage Apparatus, 2023, 59(6): 147-153.
[23] 吴广宁, 钟鑫, 包健康. 温度对油纸绝缘介电频谱特性的影响[J]. 高电压技术, 2015, 41(12): 4081-4088.
Wu Guangning, Zhong Xin, Bao Jiankang.Effect of temperature on dielectric spectrum characteristic of oil-paper insulation[J]. High Voltage Engineering, 2015, 41(12): 4081-4088.
[24] Dissado L A, Hill R M.A cluster approach to the structure of imperfect materials and their relaxation spectroscopy[J]. Proceedings of the Royal Society of London Series A, 1983, 390(1798): 131-180.
[25] Xie Jiacheng, Dong Ming, Hu Yizhuo, et al.Modeling oil-paper insulation frequency domain spectroscopy based on its microscopic dielectric processes[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2019, 26(6): 1788-1796.
[26] 王世强, 魏建林, 杨双锁, 等. 油纸绝缘加速热老化的频域介电谱特性[J]. 中国电机工程学报, 2010, 30(34): 125-131.
Wang Shiqiang, Wei Jianlin, Yang Shuangsuo, et al.Frequency domain dielectric spectroscopy characteristics of oil-paper insulation under accelerated thermal aging[J]. Proceedings of the CSEE, 2010, 30(34): 125-131.
[27] 杨丽君, 邓帮飞, 廖瑞金, 等. 应用时-温-水分叠加方法改进油纸绝缘热老化寿命模型[J]. 中国电机工程学报, 2011, 31(31): 196-203.
Yang Lijun, Deng Bangfei, Liao Ruijin, et al.Improvement of lifetime model on thermal aging of oil-paper insulation by time-temperature-moisture superposition method[J]. Proceedings of the CSEE, 2011, 31(31): 196-203.