光电互感器高压侧电路供能问题的研究

光电电流互感器已经成为国内外研究的热点,其中有源电子式互感器高压侧电路的供能问题则是研究工作中的关键。文章对现有的几种供能方法进行了比较,并提出一种使互感器在高压停电状态和小电流状态下均能连续稳定运行的新的电源设计方案。该方案综合了电磁感应供电和锂离子电池供电方式的优势,为解决有源型高压光电电流互感器高压侧电源难题开辟了新途径。

The Research of Power Supply of the High-voltage Side Circuit of Optic Electronic Transformer

The optic and electronic current transformer is highlighted in the research of current mea-(surement) in electric power system.How to energize the active electronic current transformer at high-voltage side is the key problem to investigate.Through comparing several methods,this paper presented a new(design) scheme of power supply,which combines the advantages of power supply methods of CT and Li-ion(battery.) The new design made the transducer run in normal during high-voltage halt or under the condition of insufficient current state.It opened the new way for solving the difficult problem of power supply of the highvoltage side of the optic and electric current transformer.