| 绝缘子污秽的毫米波辐射测量建模与计算 |
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| 引用本文： | 李和明,芦杉,高强,赵振兵.绝缘子污秽的毫米波辐射测量建模与计算[J].电工技术学报,2009,24(6). |
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| 作者姓名： | 李和明 芦杉 高强 赵振兵 |
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| 作者单位： | 华北电力大学电气与电子工程学院,保定,071003 |
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| 摘 要： | 根据天线理论与微波辐射测量原理,建立了绝缘子污秽的毫米波辐射检测模型,包括天线温度模型与三层媒质模型两部分,分析了绝缘子表面的发射率与温度、入射角度、污层厚度及绝缘子层介电常数等因素之间的关系。在晴朗天空和云雾天气两种情况下,首先根据大气参数计算出天空温度,进而利用检测模型得出不同条件下天线温度与绝缘子等值附盐密度之间的对应关系。计算结果表明,对于高精度的毫米波辐射计,在确定的天气参数和模型参数下,天线温度值完全能够反映绝缘子的污秽程度。最后,通过实验证明了该检测模型的准确性和有效性,为工程应用提供了参考依据。
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| 关 键 词： | 绝缘子污秽 发射率 等值附盐密度 天线温度 天空温度 |
Modeling and Calculating of Millimeter Wave Radiation Measurement for Insulator Contamination |
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| Li Heming,Lu Shan,Gao Qiang,Zhao Zhenbing.Modeling and Calculating of Millimeter Wave Radiation Measurement for Insulator Contamination[J].Transactions of China Electrotechnical Society,2009,24(6). |
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| Authors: | Li Heming Lu Shan Gao Qiang Zhao Zhenbing |
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| Affiliation: | North China Electric Power University Baoding 071003 China |
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| Abstract: | According to the theory of antenna and microwave radiometry, the model of millimeter wave radiation measurement of insulator contamination is established in this paper. It includes the antenna temperature model and the three-layer medium model. The relationship between medium emission rate and some factors such as temperature, incident angle, thickness of the contamination and insulators-layer dielectric constant are analyzed. Under the clear sky and cloud weather conditions, sky temperatures are calculated... |
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| Keywords: | Insulator contamination emission rate ESDD antenna temperature sky temperature |
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