摘要
电力系统使用的电压互感器大多采用电磁式结构,需进行二次变压,才能将电网上的信号变为电子测量装置可用的信号.所研究的电压传感器采用电阻分压,可将初级电压直接转化为10V以内的微信号供电子测量装置使用.与传统的电压互感器相比,具有体积小,传输频带宽,不存在饱和问题,无谐振点等优点.并从路的角度分析了该分压器的误差特性,从场的角度对几种传感器结构的设计方案进行了比较.
The voltage transformer used in powe r system usually adopts electromagn etic configuration whose output signal can' t be directly used by electronic apparatus without further transformation.By adopting resistance divider,voltage sensor designed in this paper can transformprimary voltage into micro -signal within 10V,which can be used in measurement system dir ectly.By contrast with traditional voltage transformer,it has advanta ges of smaller volume,wider range of frequency,no saturation and no resonance.In this paper,we analyze its error characteristic in electric circuit and contrasted several designed str uctures according to calculation of electro-magnetic field.
出处
《沈阳工业大学学报》
EI
CAS
2001年第6期475-478,共4页
Journal of Shenyang University of Technology
