电工技术学报  2021, Vol. 36 Issue (20): 4359-4370    DOI: 10.19595/j.cnki.1000-6753.tces.200836
高电压与放电 |
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
邹阳1, 林超群1, 叶荣2, 金涛1
1.福州大学电气工程与自动化学院 福州 350108;
2.国网福建省电力有限公司福州供电公司 福州 350009
Quantitative Relationship Between the Moisture Content of Oil-Impregnated Paper and the Poles of the Polarization Branch of the Hybrid Equivalent Model
Zou Yang1, Lin Chaoqun1, Ye Rong2, Jin Tao1
1. College of Electrical Engineering and Automation Fuzhou University Fuzhou 350108 China;
2. Fuzhou Power Supply Company of State Grid Fujian Electric Power Co. Ltd Fuzhou 350009 China
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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PTC-MaxPTC-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 PTC-Max and PTC-Min that 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 wordsinterface 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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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.200836          https://dgjsxb.ces-transaction.com/CN/Y2021/V36/I20/4359