| 高压染污绝缘子泄漏电流的频谱特征 |
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| 引用本文： | 惠阿丽.高压染污绝缘子泄漏电流的频谱特征[J].高电压技术,2011,37(2):325-332. |
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| 作者姓名： | 惠阿丽 |
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| 作者单位： | 西安科技大学电气与控制工程学院,西安,710054 |
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| 基金项目： | 国家自然科学基金(902110006)~~ |
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| 摘 要： | 随着电网电压等级的提高和各类污染的加剧,绝缘子污闪事故日益严重,通过有关特征量提取来实现绝缘子表面状态的监测是预防污闪、提高电网可靠性的关键.为此,以频谱理论和高阶统计量理论为基础,研究了高压污秽绝缘子泄漏电流的功率谱、功率谱频段能量变化规律;提取了泄漏电流的双谱信息,并分析了双谱对角切片和最大谱峰及其对应的频率分量的...
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| 关 键 词： | 频谱 闪络 双谱 高阶累计量 泄漏电流 对角切片 绝缘子 |
Leakage Current Spectrum Characteristics of HV Contaminated Insulators |
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| HUI A-li.Leakage Current Spectrum Characteristics of HV Contaminated Insulators[J].High Voltage Engineering,2011,37(2):325-332. |
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| Authors: | HUI A-li |
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| Affiliation: | HUI A-li(School of Electrical and Control Engineering,Xi'an University of Science and Technology,Xi'an 710054,China) |
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| Abstract: | To realize the monitoring for the insulator surface condition through extracting the amount of the relevant characteristics of leakage current(LC) is the critical way to prevent flashover and to improve grid reliability.Consequently,not only spectrum energy and bi-spectrum of LC are calculated based on the spectrum theory and high order cumulants theory,but also the bi-spectrum slice and its corresponding frequency are analyzed.The results show that spectrum energy can describe the development of LC.The hig... |
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| Keywords: | spectrum flashover bispectrum high-order cumulants leakage current slice insulator |
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