基于超微晶合金铁心的10kV/35Hz电压互感器研究

摘要

当风机水泵系统外部电压频率由50Hz变为35Hz时,50Hz电压互感器出现了饱和问题。针对现有电压互感器测量低频信号出现的问题,设计了10kV/35Hz电压互感器,该互感器以单片机作为测量主体,铁心采用超微晶合金,同时增大铁心截面积,不仅保证了对10kV/35Hz电压和频率参数的测量精度,同样适用于工频环境。%When external voltage frequency of traditional fan motor pump system changes from 50 Hz to 35 Hz, saturated problems take place in 50 Hz voltage transformer. In allusion to existing problems when voltage transformers measure low frequency signals, the 10 kV/35 Hz voltage transformer was designed. The transformer took a single chip microprocessor as measuring main body, iron core adopted extra microcrystalline alloy, and in the meantime iron core cross sectional area was increased. The design not only assures measurement accuracy for 10 kV/35 Hz voltage and frequency parameters, but also is adaptable to that of working frequency environment.