| 高频连续脉冲作用下电机绝缘局部放电信号的提取 |
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| 引用本文： | 张血琴,吴广宁,郭俊,佟来生,张国钦. 高频连续脉冲作用下电机绝缘局部放电信号的提取[J]. 电工技术学报, 2005, 20(9): 103-107 |
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| 作者姓名： | 张血琴 吴广宁 郭俊 佟来生 张国钦 |
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| 作者单位： | 西南交通大学电气工程学院,成都,610031;西南交通大学电气工程学院,成都,610031;西南交通大学电气工程学院,成都,610031;西南交通大学电气工程学院,成都,610031;西南交通大学电气工程学院,成都,610031 |
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| 基金项目： | 国家自然科学基金，教育部霍英东教育基金，国家重点实验室基金 |
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| 摘 要： | 局部放电是引起PWM变频电机绝缘在高频连续脉冲条件下发生老化的重要因素之一,严重时将导致电机绝缘的击穿.由于高频连续脉冲的上升时间为ns级且幅值为kV级,既加剧了电机绝缘的老化程度,也对局部放电检测系统提出了高要求.为了有效提取局部放电信号,本文提出一种新型的脉冲电流传感器(ICS).基于该传感器建立了一套局部放电测试系统,以牵引电机电磁线绞线对为试样进行局部放电测试.测量结果表明该测试系统能有效提取平顶区域的局部放电信号,对研究脉冲电压作用下的局部放电对绝缘老化的影响具有重要价值.
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| 关 键 词： | 高频 连续脉冲 局部放电 ICS 牵引电机 |
| 修稿时间： | 2004-12-07 |
PD Measurement of Stator Insulation Under High-frequency Continuous Impulses |
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| Zhang Xueqin,Wu Guangning,Guo Jun,Tong Laisheng,Zhang Guoqin. PD Measurement of Stator Insulation Under High-frequency Continuous Impulses[J]. Transactions of China Electrotechnical Society, 2005, 20(9): 103-107 |
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| Authors: | Zhang Xueqin Wu Guangning Guo Jun Tong Laisheng Zhang Guoqin |
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| Affiliation: | Southwest Jiaotong University Chengdu 610031 China |
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| Abstract: | Under high frequency continuous impulse, partial discharge is one of the most important factors, which even cause insulation breakdown of PWM inverter-fed motors. The reason is the impulse rise-time in the order of nanoseconds, as well as amplitude in several kilo-voltages. Such rigorous condition would result in aggravating aging degree of motor insulation. So it is necessary to put forward a great-request to partial discharge (PD) detection. In this paper, it provides a impulse Current Sensor(ICS)to obtain better signal. Measuring twist pairs by ICS PD detection, PD could be displayed during the flat period of the impulse wave. It could be worthful not only for deep study on PD character, but also to explore the mechanism under impulse condition. |
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| Keywords: | ICS |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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