油浸纸水分含量与混联等效模型极化支路极点的定量关系

doi:10.19595/j.cnki.1000-6753.tces.200836

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摘要该文基于油纸绝缘混联等效模型（HEM）——一种将界面极化支路引入扩展德拜模型（EDM）的拓扑结构,提取新的表征油浸纸水分含量的频域特征参量P_TC-Max、P_TC-Min。首先基于实测感应调压器数据对比FDS在辨识HEM与EDM模型参数效果上的不同,说明HEM的优势;应用传递函数法推导得到模型的传递函数方程,通过Matlab解析得到不同水分含量油浸纸的传递函数谱,以此提出HEM极化支路极点可表征油浸纸的水分含量;运用最优加权组合法实现两特征参量对应评估方程的线性组合,克服单一评估方程的不足;最后基于不同尺寸油纸绝缘设备的实测数据对所提取的特征参量进行有效性检验。

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关键词 ：油浸纸, 油浸纸, 混联等效模型, 水分含量, 混联等效模型, 界面极化支路, 水分含量, 频域特征参量, 界面极化支路, 频域特征参量

Abstract：Based on the hybrid equivalent model of oil-paper insulation (HEM), the interface polarization branch is introduced into the topology of the extended Debye model (EDM), and new frequency domain characteristic parameters P_TC-Max and P_TC-Minthat characterize the moisture content of oil-impregnated paper are extracted. Firstly, according to the measured induction voltage regulator data, the difference of FDS in identifying the parameters of HEM and EDM models is compared to explain the advantages of HEM. The transfer function equation of the model is derived by the transfer function method, and the transfer function spectrum of oil-impregnated paper with different moisture content is obtained through Matlab analysis. Then, the HEM polarization branch pole can be used to characterize the moisture content of oil-impregnated paper. The linear combination of evaluation equations corresponding to the two characteristic parameters is realized by the optimal weighted combination method, which overcomes the shortcomings of the single evaluation equation. Finally, by the measured data of different sizes of oil-paper insulation equipment, the validity of the extracted characteristic parameters is tested.

Key words： interface polarization branch frequency domain characteristic parameter Oil-impregnated paper hybrid equivalent model moisture content Oil-impregnated paper hybrid equivalent model interface polarization branch moisture content frequency domain characteristic parameter interface polarization branch frequency domain characteristic parameter

收稿日期: 2020-07-09

PACS:

TM85

基金资助:国家自然科学基金（51977039）和福建省自然科学基金（2019J01248）资助项目

通讯作者: 林超群男,1995年生,硕士研究生,研究方向为电气设备绝缘老化诊断。E-mail:1354462658@qq.com

作者简介: 邹阳男,1980年生,博士,副教授,研究方向为电气系统智能化故障诊断。E-mail: 24001744@qq.com

引用本文:

邹阳, 林超群, 叶荣, 金涛. 油浸纸水分含量与混联等效模型极化支路极点的定量关系[J]. 电工技术学报, 2021, 36(20): 4359-4370. Zou Yang, Lin Chaoqun, Ye Rong, Jin Tao. Quantitative Relationship Between the Moisture Content of Oil-Impregnated Paper and the Poles of the Polarization Branch of the Hybrid Equivalent Model. Transactions of China Electrotechnical Society, 2021, 36(20): 4359-4370.

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