温度对环氧胶浸纸套管FDS特性的影响

doi:10.11930/j.issn.1004-9649.202105006

中国电力 ›› 2021, Vol. 54 ›› Issue (10): 186-195.DOI: 10.11930/j.issn.1004-9649.202105006

温度对环氧胶浸纸套管FDS特性的影响

张寒¹, 胡伟¹, 许佐明¹, 万保权¹, 尹朋博¹, 毛航银²

1. 电网环境保护国家重点实验室(中国电力科学研究院)，湖北武汉 430074;
2. 国网浙江省电力有限公司，浙江杭州 310007

收稿日期:2021-05-07 修回日期:2021-05-31 出版日期:2021-10-05 发布日期:2021-10-16
作者简介:张寒(1997-),女,硕士研究生,从事高压套管在线监测与绝缘诊断技术研究,E-mail:zhanghan0510@126.com;万保权(1971-),男,通信作者,博士,高级工程师(教授级),从事电力系统电磁环境和电磁兼容技术研究,E-mail:wanbaoquan@epri.sgcc.com.cn
基金资助:
国家电网有限公司科技项目(工程应用的特高压直流套管关键状态参量监测及评估，GY71-19-061)

Effect of Temperature on FDS Characteristics of Resin Impregnated Paper Bushing

ZHANG Han¹, HU Wei¹, XU Zuoming¹, WAN Baoquan¹, YIN Pengbo¹, MAO Hangyin²

1. State Key Laboratory of Power Grid Environmental Protection, China Electric Power Research Institute, Wuhan 430074, China;
2. State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310007, China

Received:2021-05-07 Revised:2021-05-31 Online:2021-10-05 Published:2021-10-16
Supported by:
This work is supported by Science and Technology Project of SGCC (Research on Monitoring and Evaluation Technology of Key State Parameters of UHVDC Bushing Applied in Engineering, No.GY71-19-061)

摘要/Abstract

摘要： 为研究温度对环氧胶浸纸套管频域谱特性的影响，以便更准确地将介电响应技术应用于套管受潮或老化状态评估，设计了不同温度下胶浸纸套管绝缘频域谱(FDS)测量试验，运用电介质极化理论对频域介电现象进行分析，并建立扩展Debye模型，利用遗传算法和内点法辨识各支路参数，通过模型参量变化分析温度对频域谱特性的影响规律。结果表明，随着温度的升高，低频区(10^–3~1 Hz)复电容实部随着温度的升高显著增大，介损和复电容虚部频谱曲线整体向高频方向移动；建立的6支路Debye模型与实测值基本相符，绝缘电阻R₀随温度升高而减小，几何电容C₀基本不变；采用基于“频温平移因子”的主曲线技术可有效消除温度的影响，实现将已知温度下的频谱曲线折算到未知温度，扩展了频谱曲线的测量范围；频谱曲线的“平移因子”满足Arrhenius方程，利用“平移因子”计算得到的活化能约为31.92 kJ/mol。因此，利用频域介电谱法评估受潮或老化状态时必须考虑温度的影响，否则将导致评估结果失实。

关键词: 环氧胶浸纸套管, 频域介电谱, Debye模型, 频温平移因子

Abstract: In order to study the influence of temperature on the frequency domain spectroscopy (FDS) characteristics of resin-impregnated paper (RIP) bushings, and more accurately apply the dielectric response technology to the evaluation of bushing damp or aging state, the FDS measurement experiments of RIP bushing insulation at different temperatures are designed in this paper. The dielectric polarization theory is used to analyze the frequency domain dielectric phenomenon, and the extended Debye model is established. The genetic algorithm and interior point method are used to identify the parameters of each branch, and the influence of temperature on FDS characteristics is analyzed through changing the model parameters. The results show that with the increase of temperature, the real part of complex capacitance in low frequency region (10^–3~1 Hz) increases significantly, and the spectrum curves of dielectric loss and imaginary part of complex capacitance move to high frequency; the established 6-branch Debye model is basically consistent with the measured values, and the insulation resistance R₀ decreases with the increase of temperature while the geometric capacitance C₀ basically keeps unchanged; the "frequency temperature shift factor"-based main curve technology can effectively eliminate the influence of temperature and convert the spectrum curve under known temperature to unknown temperature, consequently extending the measurement range of spectrum curve; the "translation factor" of the spectrum curve satisfies the Arrhenius equation, and the activation energy calculated by the "translation factor" is about 31.92 kJ/mol. Therefore, the influence of temperature must be considered when using frequency domain dielectric spectroscopy to evaluate the state of damp or aging, otherwise the evaluation results will be inaccurate.

Key words: resin impregnated paper bushing, frequency domain spectroscopy, Debye model, frequency temperature shift factor

张寒, 胡伟, 许佐明, 万保权, 尹朋博, 毛航银. 温度对环氧胶浸纸套管FDS特性的影响[J]. 中国电力, 2021, 54(10): 186-195.

ZHANG Han, HU Wei, XU Zuoming, WAN Baoquan, YIN Pengbo, MAO Hangyin. Effect of Temperature on FDS Characteristics of Resin Impregnated Paper Bushing[J]. Electric Power, 2021, 54(10): 186-195.

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温度对环氧胶浸纸套管FDS特性的影响

Effect of Temperature on FDS Characteristics of Resin Impregnated Paper Bushing

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