接触网腕臂瓷绝缘子放电特征参量与提取

发布时间：2018-03-27 16:49

本文选题：腕臂瓷绝缘子　切入点：泄漏电流成分　出处：《电瓷避雷器》2014年06期

【摘要】：分析了目前已有泄漏电流特征参量对于准确表征绝缘子表面放电状态的不足,研究了污秽放电发展过程中的放电现象,提出了将泄漏电流分解为正弦波成分、三角波成分、杂散脉冲成分以及脉冲群成分4种成分,并将这4种成分的电荷含量作为放电特征参量来表征绝缘子表面放电状态。结合小波分析方法和数据处理方法提出了泄漏电流4种成分的提取方法。通过某型号铁路接触网棒形瓷绝缘子的人工污秽试验,验证了提出的泄漏电流4种成分提取方法的正确性和有效性,为下一步污秽度预测以及污闪预警提供新的特征参量。
[Abstract]:In this paper, the deficiency of existing characteristic parameters of leakage current for accurately characterizing the discharge state of insulator surface is analyzed. The discharge phenomenon in the development of polluted discharge is studied, and the leakage current is decomposed into sine wave component and triangle wave component. Stray pulse components and pulse-group components, The charge content of the four components is taken as the discharge characteristic parameter to characterize the discharge state of the insulator surface. A method for extracting the four components of the leakage current is proposed by combining the wavelet analysis method and the data processing method. Artificial contamination Test of Rod Type porcelain Insulator for Railway OCS, The correctness and effectiveness of the proposed four methods for extracting leakage current components are verified, and new characteristic parameters are provided for the prediction of contamination degree and pollution flashover warning in the next step.
【作者单位】：西南交通大学电气工程学院;中国铁道科学研究院基础设检测研究所;
【基金】：牵引供电安全技术研究--高速铁路供电设备综合检测监测系统技术研究(编号:2012J007-A)
【分类号】：TM216;U225

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