华电技术 ›› 2017, Vol. 39 ›› Issue (3): 9-11.

• 研究与开发 • 上一篇    下一篇

交流采样回路接触阻抗原理及仿真分析

  

  1. 南京国电南自电网自动化有限公司,南京〓211153
  • 出版日期:2017-03-25 发布日期:2017-04-26

Principle of contact resistance of alternating current sampling circuit and its simulation analysis

  1. Nanjing SAC Automation Company Limited, Nanjing 211153, China
  • Online:2017-03-25 Published:2017-04-26

摘要:

分析了智能变电站中保护控制装置交流采样回路的阻抗特性,提出了交流采样回路接触阻抗模型。采用Matlab Simulink软件建立交流采样回路接触阻抗仿真模型,分析了接触阻抗变化对信号传输的影响,通过调整端子之间的阻抗参数进行仿真验证。提出防止连接器接触故障的一些合理化建议。

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Abstract:

This paper analyzed the resistance characteristics of alternating current sampling circuit of protective control device in intelligent substation and proposed the contact resistance model of alternating current sampling circuit. Firstly, this paper built a simulation model of contact resistance of alternating current sampling circuit using the Matlab Simulink software. Then it analyzed the influence of contact resistance variation on signal transmission and verified it by simulation through adjusting the resistance parameters among terminals. At last, it proposed some reasonable suggestions to preventing the contact defaults of connector.

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