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首页> 外文期刊>IEEE Transactions on Dielectrics and Electrical Insulation >Dynamic flashover model considering pollution layer resistance variation for fixed washed high voltage insulators
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Dynamic flashover model considering pollution layer resistance variation for fixed washed high voltage insulators

机译：固定冲洗高压绝缘子考虑污染层电阻变化的动态闪络模型

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摘要

This paper presents a dynamic model to compute the DC flashover voltage for a fixed washed high voltage insulator. This model provides a combination between the static flashover and dynamic arc models. The proposed model takes the pollution layer resistance variation with time during washing into consideration. This variation is experimentally measured at different equivalent salt deposit density (ESDD) values. A mathematical equation for computing the pollution resistance variation with time during washing process is proposed. The DC flashover voltage is computed using the proposed flashover model at different pollution levels. The proposed flashover model is experimentally validated considering the adopted ESDD values. Also, the obtained results show a good agreement between the proposed model and experimental results. The effect of washing water flow rate on flashover voltage is preliminary investigated. Finally, the present study improves fixed washing systems and decreases the flashover during the washing process.
机译：本文提出了一个动态模型，用于计算固定冲洗高压绝缘子的直流闪络电压。该模型提供了静态闪络模型和动态电弧模型之间的组合。提出的模型考虑了洗涤过程中污染层电阻随时间的变化。在不同的等效盐沉积密度（ESDD）值下通过实验测量了这种变化。提出了计算洗涤过程中耐污染性随时间变化的数学方程。使用建议的闪络模型在不同污染水平下计算直流闪络电压。考虑到采用的ESDD值，通过实验验证了建议的闪络模型。而且，获得的结果显示了所提出的模型与实验结果之间的良好一致性。初步研究了洗涤水流速对闪络电压的影响。最后，本研究改进了固定洗涤系统并减少了洗涤过程中的闪络。

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