低频时码授时电能表抗干扰滤波器设计  

Design of Anti-jamming Filter for Low Frequency Time Code Time Meter

作　　者：马丽萌 巨汉基[2] 张海燕[1] 苑津莎[1] 王晨[2] Ma Limeng Ju Hanji Zhang Haiyan Yuan Jlnsha Wang Chen(North China Electric Power University, Baoding 071003, China State Grid Jibei Electric Power Co. Ltd. Research Institute, North China Electric Power Research Institute Co. Ltd.,Beijing 100045 ,China)

机构地区：[1]华北电力大学,河北保定071003 [2]国网冀北电力有限公司电力科学研究院(华北电力科学研究院有限责任公司),北京100045

出　　处：《华北电力技术》2017年第6期26-30,36,共6页North China Electric Power

摘　　要：为了解决电能表低频时码授时技术存在的干扰问题,对低频时码的干扰源进行研究,针对低频时码接收的干扰这一问题,利用无限增益多路反馈带通滤波器原理,设计了一款滤波器,滤出68.5 k Hz以外的干扰信号,并用Multisim软件进行仿真,可以使信号混杂的干扰得到很好的抑制,低噪声,失真较小。In order to solve the interference problem of low frequency time code technology, the interference source of low frequency time code is studied. In view of the interference problem of low frequency time code reception, based on the principle of infinite gain multiple feedback bandpass filter, a filter is designed. It can filter out interference signals other than 68.5 kHz, and use Multisim software for simulation, the signal mixed interference can be well sup- pressed with low noise and less distortion.

关 键 词：电能表 低频时码 抗干扰 滤波器 

分 类 号：TN713[电子电信—电路与系统]