| 一次回路形成电快速瞬变脉冲群骚扰的研究及防护 |
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| 引用本文： | 王玉峰,邹积岩,廖敏夫.一次回路形成电快速瞬变脉冲群骚扰的研究及防护[J].电力自动化设备,2007,27(9):22-27. |
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| 作者姓名： | 王玉峰 邹积岩 廖敏夫 |
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| 作者单位： | 大连理工大学,电气工程与应用电子技术系,辽宁,大连,116024 |
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| 摘 要： | 对开关分断操作引起的电快速瞬变脉冲群(EFT/B)骚扰信号的时域和频域特性进行研究。分析了开关分断操作时电感中的电流对杂散电容充电引起EFT/B骚扰的过程,采用电力系统电磁暂态仿真软件ATP仿真电力系统一次回路中开断空载变压器和空载长线时形成的EFT/B骚扰。采取金属氧化物避雷器(MOV)保护、RC保护和选相分闸等防护措施可抑制开关分断操作引起的EFT/B骚扰的幅值,减小EFT/B骚扰的振荡频率。
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| 关 键 词： | 电快速瞬变脉冲群 杂散电容 干扰源 |
| 文章编号： | 1006-6047（2007）09-0022-05 |
| 收稿时间： | 2006-12-15 |
| 修稿时间： | 2007-03-15 |
Study of EFT/B generated in primary circuit and its countermeasures |
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| WANG Yu-feng,ZOU Ji-yan,LIAO Min-fu.Study of EFT/B generated in primary circuit and its countermeasures[J].Electric Power Automation Equipment,2007,27(9):22-27. |
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| Authors: | WANG Yu-feng ZOU Ji-yan LIAO Min-fu |
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| Affiliation: | Dalian University of Technology, Dalian 116024, China |
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| Abstract: | The time-domain and frequency-domain characteristics of EFT /B(Electrical Fast Transient /Burst) caused by switch operations are studied.The EFT /B generation process is analyzed:the current of inductors during switch-open operation charges the parasitic capacitance,which is simulated for no-load transformer trip and no-load long transmission line trip using the electromagnetic transient simulation software ATP.Countermeasures,such as MOV(Metal Oxide Varistor),RC protection and selected phase-trip,may suppress the EFT /B caused by trip operation and lower its frequency. |
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| Keywords: | EFT/B parasitic capacitance interference source |
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