Aging State Evaluation of Oil-Paper Insulation Based on Electro-Mechanical Impedance Technology

IF 2.9 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2024-07-24 DOI:10.1109/TDEI.2024.3433321

Xiujun Huang;Shengchang Ji;Mingyang Xu;Fan Zhang

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引用次数: 0

Abstract

The oil-paper insulation’s aging can deteriorate the mechanical and electrical performance of the electrical power device; thus, it is necessary to evaluate the aging state of oil-paper insulation. Based on the electro-mechanical impedance technology, a novel aging state evaluation method of oil-paper insulation is proposed in this letter, which utilizes the piezoelectricity caused by the insulating paper attached to the piezoelectric material (PZT). The electro-mechanical model of the paper-PZT system is established considering the electric-vibration coupling effect and its characteristics are analyzed using the principle of stationary action. The insulating paper with different aging states, indicated by the degree of polymerization (DP), is selected to obtain the impedance characteristics of the paper-PZT system. The experimental results show the impedance amplitudes of the paper-PZT system increase with the aging degree, which can help in the nondestructive aging evaluation of the oil-paper insulation.

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基于机电阻抗技术的油纸绝缘老化状态评估

油纸绝缘的老化会使电力设备的机械和电气性能恶化，因此有必要对油纸绝缘的老化状态进行评估。本文基于机电阻抗技术，提出了一种新型的油纸绝缘老化状态评估方法，该方法利用了绝缘纸附着在压电材料（PZT）上所产生的压电效应。考虑到电振耦合效应，建立了纸-PZT 系统的机电模型，并利用静止作用原理分析了其特性。选择以聚合度（DP）表示的不同老化状态的绝缘纸来获得纸-PZT 系统的阻抗特性。实验结果表明，纸-PZT 系统的阻抗幅值随老化程度的增加而增大，这有助于对油纸绝缘层进行无损老化评估。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Dielectrics and Electrical Insulation 工程技术-工程：电子与电气

CiteScore

6.00

自引率

22.60%

发文量

309

审稿时长

5.2 months

期刊介绍： Topics that are concerned with dielectric phenomena and measurements, with development and characterization of gaseous, vacuum, liquid and solid electrical insulating materials and systems; and with utilization of these materials in circuits and systems under condition of use.