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微机保护电磁兼容研究及变电站内电磁干扰的传播途径

Research on Electromagnetic Compatibility for the Microprocessor Based Protective Relay and Propagating Channels of Electromagnetic Interference in Substation

【作者】 秦晓辉

【导师】 杨奇逊;

【作者基本信息】 华北电力大学(北京) , 电力系统及其自动化, 2003, 硕士

【摘要】 微机保护装置在电力系统的安全运行中起着非常重要的作用,同时,它又处在电磁环境极为恶劣的变电站中,因此其电磁兼容问题十分突出。  本文主要是研究如何提高微机保护装置的抗电磁干扰性能,以及探明各种电磁干扰在变电站内的传播途径。  本文按照IEC60255-22系列标准对以CSL101B-2为例的微机保护装置进行了全面的电磁兼容抗扰度试验,并结合试验结果,力求用电路理论和电磁场相关理论对保护装置进行EMC建模。本文还利用MATLAB6.1对变电站内的一些骚扰源进行了建模和仿真,并把“电磁拓扑”的方法运用到对变电站内电磁干扰传播途径的研究中。

【Abstract】 The micro-computer-based protection plays an important role in the power system’ssafe operation, but at the same time, it lies in the substation where the EMI is harsh, sothe EMC of the protection is a very serious problem. The paper is mainly about how to improve the immunity of protection to EMI andanalysis of the EMI transmission approach in substation. The author carries through the entire immunity tests to the CSL101B-2 protectionaccording to the IEC60255-22 series standards, and tries modeling the EMC ofprotection devices with the traditional circuit-theory and some relativeelectromagnetic-field theory, referring to the results of disturbance tests. The paperfinishes the simulation and modeling of the EMI resources in substation with MATLAB6.1 and applies the “electromagnetic topology”in the analysis of the propagatingchannels of EMI in substation.

  • 【分类号】TM774
  • 【被引频次】20
  • 【下载频次】637
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