多功能电能表的电快速瞬变脉冲群问题处理方法研究

Study of the Treatment Method for EFT Noise Immunity Problem of Multifunctional Meter

针对多功能电能表的电快速瞬变脉冲群(electrical fast transient,EFT)抗扰度问题,分析了EFT产生和骚扰机理,研究了EFT的处理方法,提出了针对多功能电能表电源输入端口电快速瞬变脉冲群问题的解决方法.试验结果表明,所提方法可以有效提高多功能电能表的EFT抗扰度等级,达到GB/T 17626.4—2006标准要求.

For the electrical fast transient（ EFT） noise immunity problems of the Multifunctional Meter,the mechanism of production and harassment of EFT are analyzed,the treatment method of EFT is studied,and a solution to EFT problem of power input port of meter is put forward. The experimental results show that the EFT noise immunity level of multifunctional meter is efficiently improved,and the demands of GB / T 17626. 4- 2006 are reached.