| 微机保护抗电快速瞬变脉冲群干扰的研究 |
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| 引用本文： | 王剑乔,刘建新.微机保护抗电快速瞬变脉冲群干扰的研究[J].高电压技术,2005,31(10):36-38. |
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| 作者姓名： | 王剑乔 刘建新 |
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| 作者单位： | 华北电力大学电力工程系,保定,071003;华北电力大学电力工程系,保定,071003 |
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| 基金项目： | 国家自然科学基金重点资助项目(50237040) |
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| 摘 要： | 用P90.1型脉冲发生器模拟微机保护装置实际运行中所受到的干扰,用数字示波器LeCroy9310A实验分析电快速瞬变脉冲群的特性及其频谱并讨论了电快速瞬变脉冲群在微机保护装置各个端口的传播途径,结合抗干扰原理提出了弱电滤波、增大共模回路阻抗等相应措施。实例证明,采取预防措施后装置的抗干扰能力得到提高,能一次性通过电快速瞬变脉冲群干扰检测。
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| 关 键 词： | 电快速瞬变脉冲群 微机保护装置 端口 |
| 文章编号： | 1003-6520(2005)10-0036-03 |
| 收稿时间： | 2004-10-01 |
| 修稿时间： | 2004年10月1日 |
Research on Electrical Fast Transient Immunity for Relay Protection Equipment |
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| WANG Jianqiao,LIU Jianxin.Research on Electrical Fast Transient Immunity for Relay Protection Equipment[J].High Voltage Engineering,2005,31(10):36-38. |
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| Authors: | WANG Jianqiao LIU Jianxin |
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| Affiliation: | Department of Electric Power Engineering, North China Electric Power Univerity, Baoding 071003, China |
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| Abstract: | The electrical fast transient (EFT) disturbance test is one of the most difficult tests, because it is a fast uprising, repetitive pulse group. P90.1 fast transient/burst interference generator is adopted to simulate the interference of microprocessor-based protective equipment under practical operation conditions. Digital oscillograph LeCroy9310A is used to doing experiments. The characteristic of EFT and amplitudes -frequency spectrum is analyzed. The transmitting track of EFT interference for ports is discussed. Some measures is proposed such as filter and increasing common mode circuit impedance and so on. An example of improper immunity design is analyzed and the solution is given. It proves that having anti-interference equipment, EFT examine can be passed successfully. |
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| Keywords: | electrical fast transient (EFT) protection equipment port |
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