中国电力 ›› 2016, Vol. 49 ›› Issue (8): 7-11.DOI: 10.11930/j.issn.1004-9649.2016.08.007.05

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变电站雷击过电流及其对设备传感器的影响

邹振宇1,陈博1,于玉铭1,赵君龙2,陈常涛2,李可军2,娄杰2   

  1. 1. 山东电力咨询院有限公司,山东 济南 250013;
    2. 山东大学 电气工程学院,山东 济南 250061
  • 收稿日期:2016-02-04 出版日期:2016-08-10 发布日期:2016-08-12
  • 通讯作者: 山东省科技发展计划资助项目(2014GGH204002)
  • 作者简介:邹振宇(1979—),男,山东泰安人,博士,高级工程师,从事输变电工程设计领域研究和管理工作。

Research on Lightning Overcurrent of Substation and Its Influence on Device Sensors

ZOU Zhenyu1, CHEN Bo1, YU Yuming1, ZHAO Junlong2, CHEN Changtao2, LI Kejun2, LOU Jie2   

  1. 1. Shandong Electric Power Engineering Consulting Institute Corp., Ltd., Jinan 250013, China;
    2. School of Electrical Engineering, Shandong University, Jinan 250061, China
  • Received:2016-02-04 Online:2016-08-10 Published:2016-08-12
  • Contact: This work is supported by Shandong Province Science and Technology Development Program (No. 2014GGH204002).

摘要: 雷击变电站不仅影响到电气设备绝缘的安全性,剧烈的放电过程所产生的强电磁干扰也会对二次设备中的一些敏感器件产生影响。针对变电站雷击过电流问题,利用ATP-EMTP软件建立了合理的模型,并进行了仿真计算,得到了各设备的过电流及过电压幅值。并以GIS局部放电监测装置的传感器为例,利用MagNet软件仿真了雷击过程的电磁干扰对传感器的影响。结果表明,雷击产生的过电流在严重的情况下,能产生323 V的感应电压,极易造成传感器损坏。

关键词: 变电站, 雷击过电流, 传感器, EMTP, MagNet

Abstract: The lightning of substation will affect the insulation safety of electrical equipment, and the strong EMI caused by the discharge process may damage the sensitive devices of the secondary equipment. A model is established for the lightning overcurrent of substation by using EMTP/ATP software. In the simulation, the amplitude of overcurrent and overvoltage of each equipment are obtained. Then, by taking the GIS partial discharge sensor as an example, the EMI influence on the sensors during lightning is simulated and analyzed by using MagNet software. The result shows that the overcurrent caused by lightning can produce a maximum induced voltage of 323V in serious cases and may seriously damage the sensors.

Key words: substation, lightning overcurrent, sensor, EMTP, MagNet

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