首页> 美国政府科技报告 >Effects of Shield Impedance, Connector Resistance, and Coaxial Inductors on Ground Noise Interference in Nuclear Reactor Instrumentation Systems
【24h】

Effects of Shield Impedance, Connector Resistance, and Coaxial Inductors on Ground Noise Interference in Nuclear Reactor Instrumentation Systems

机译:屏蔽阻抗,连接器电阻和同轴电感对核反应堆仪表系统中地噪声干扰的影响

获取原文

摘要

Electrical noise interference in low-level (approximately 50 mu V), wide band (approximately 15 MHz) flux monitoring systems applied to nuclear reactor control causes safety and reliability problems. Others have shown that one predominant source of noise interference is conduction of currents in instrument cable shields and building conduits. Since these currents produce noise that is similar to signals produced by nuclear detectors, such noise interference reduces the ability of a reactor instrumentation system to determine the condition of a reactor. Model equations of ground noise interference were derived for a system model consisting of a sensor, coaxial cable, and an amplifier. These equations describe the effect of ground impedance, sensor impedance, transfer impedance, and connector resistance on both low-frequency (less than 100 kHz) and high-frequency (greater than 100 kHz) ground noise interference. Other model equations were derived for a system with a coaxial balun (a flexible coaxial cable wound around a ferrite core) added between the sensor and the sensor amplifier input. Analysis of the model equations reveals the effects of ground noise currents on instrumentation systems and the conditions for minimizing ground interference. (ERA citation 01:025801)

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号