基于实测泄漏电流特性的老化污染聚合物绝缘子电路建模

IF 1.4 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Mohammad Goudarzi, Seyed Mohammad Shahrtash, Ahmad Gholami
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引用次数: 1

摘要

本文提出了一种新的老化污染聚合物室外绝缘子等效电路模型。该模型的结构可用于研究绝缘子老化和干带放电强度对漏电流特性的影响。为了实现对老化绝缘子的建模能力,对不同老化程度和疏水性的中压绝缘子进行了室内测试,测量了泄漏电流。此外,样品被人为污染,并以实验室测试中相应的泄漏电流作为参考。该电路模型通过其拓扑结构考虑了污染的影响,并通过其元件值的变化来表示绝缘子的老化现象。试验结果与模型输出高度相似,证实了模型能够表征老化对LC特性的影响。最后,利用曲线拟合方法提取模型参数与老化水平的数学方程,从而预测聚合物绝缘体的寿命和寿命。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Circuit modelling of aged-polluted polymer insulators based on measured leakage current characteristics

Circuit modelling of aged-polluted polymer insulators based on measured leakage current characteristics

A new equivalent circuit model for aged-polluted polymer outdoor insulators is proposed here. The structure of the model is constructed as such that it can be applied in investigating the effect of insulator aging and dry band discharge intensity on leakage current (LC) characteristics. To implement the capability of modelling aged insulators, the measured leakage currents from laboratory tests on field aged MV insulators with different level of aging and hydrophobicity were examined. Furthermore, the samples were artificially polluted and the corresponding measured leakage currents from laboratory tests were employed as references. The proposed circuit model can consider the effect of pollution by its topology and represents the aging phenomenon of insulator by the changes in the values of its elements. High similarity between test results and model outputs has confirmed model ability to represent aging effect on LC characteristics. Finally, mathematical equations for model parameters in terms of aging level are extracted using curve fitting, in order to predict the age and life-time of polymer insulator.

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来源期刊
Iet Science Measurement & Technology
Iet Science Measurement & Technology 工程技术-工程:电子与电气
CiteScore
4.30
自引率
7.10%
发文量
41
审稿时长
7.5 months
期刊介绍: IET Science, Measurement & Technology publishes papers in science, engineering and technology underpinning electronic and electrical engineering, nanotechnology and medical instrumentation.The emphasis of the journal is on theory, simulation methodologies and measurement techniques. The major themes of the journal are: - electromagnetism including electromagnetic theory, computational electromagnetics and EMC - properties and applications of dielectric, magnetic, magneto-optic, piezoelectric materials down to the nanometre scale - measurement and instrumentation including sensors, actuators, medical instrumentation, fundamentals of measurement including measurement standards, uncertainty, dissemination and calibration Applications are welcome for illustrative purposes but the novelty and originality should focus on the proposed new methods.
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