摘要
电力电缆的电磁干扰问题将成为现代工业中的一个主要问题。通过对电场、磁场屏蔽原理的分析,探讨了几种有效抑制电磁干扰的电缆屏蔽层接地方法。对于三芯电力电缆和二次电缆,应采用屏蔽层两端直接接地的方法。单芯电缆的屏蔽层接地方式要根据电缆屏蔽层上感应电压的计算值来确定。总之,电缆的屏蔽和接地需要根据实际情况选择正确的屏蔽方式,以降低电磁干扰。
The electromagnetic interference of power cable will become a major problem in modern industry. Based on the analysis of the electric field and the magnetic field shielding principle, several kinds of methods to effectively restrain the electromagnetic interference are discussed. The method of direct grounding on both ends of the shield should be used in the three-core power cable and the secondary cable. The shielding layer grounding method of the single core cable is determined according to the calculated value of the induced voltage on the cable shield layer. In short, in order to reduce the electromagnetic interference, the shielding and grounding of the cable need to choose the correct way according to the actual situation.
出处
《智能建筑电气技术》
2015年第4期31-33,共3页
Electrical Technology of Intelligent Buildings
关键词
电磁干扰
屏蔽
接地
electromagnetic interference, shielding, grounding
