核电厂电缆的电磁干扰防护原理和要求  

Principles and Requirements for Electromagnetic Interference Protection of Nuclear Power Plant Cables

作　　者：濮恺 顾洁[1] PU Kai;GU Jie(School of Electronic Information and Electrical Engineering,Shanghai Jiaotong University,Shanghai 200240,China;ShanghaiNuclear Engineering Research&Design Institute Co.,Ltd.,Shanghai 200233,China)

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240 [2]上海核工程研究设计院有限公司,上海200233

出　　处：《电工技术》2021年第5期135-137,共3页Electric Engineering

摘　　要：从屏蔽和接地角度分别阐述了如何减少电磁干扰,并与数字化核电厂相关要求匹配。以电缆为例,针对电缆电容性耦合模型进行分析,通过计算得出电缆之间的电磁干扰电压,研究屏蔽技术对抑制电磁干扰的作用。针对电缆屏蔽层不同的接地方式,分析电场和磁场耦合产生的影响,由此提出了单点接地和两点接地的原则。最后,思考电缆的空间隔离对抑制电磁干扰的作用,以便进一步完善核电厂抗电磁干扰的设计。How to reduce electromagnetic interference is discussed from the aspects of shielding and grounding and matches with the requirements of digital nuclear power plant.Taking the cable as an example,the cable capacitive coupling model is analyzed.The electromagnetic interference voltage between the cables is calculated.The effect of shielding technology on suppressing electromagnetic interference is studied.According to different grounding methods of cable shield,the influence of electric field and magnetic field coupling is analyzed,and the principle of single point grounding and two-point grounding is proposed.Finally,the role of space isolation of cables to suppress electromagnetic interference is considered in order to improve the design of nuclear power plant anti-electromagnetic interference.

关 键 词：核电厂 电磁兼容 耦合 屏蔽 接地 

分 类 号：TM623[电气工程—电力系统及自动化]