【摘要】 混合式光电电流互感器的高电位侧电路供电问题是其研制技术的一个关键。本文介绍了一种采用特制线圈供能的混合式光电电流互感器,主要对这种互感器的电源供能部分进行了介绍和探讨。研究了该供能方案下的电源电路的设计及调试方法。实验结果表明:该电源部分能够很好地为光电电流互感器的高电位侧电路提供满足要求的约200mW的能量,并且各路输出的电压纹波均不大于20mV。同时,电路中设计的电压监控保护电路能够在母线突发短路大电流等情况下保护电源电路。更多还原

【Abstract】 Optical current transformer is the hotspot in power system current measurement. The high potential circuit power supply is the key problem of the research of hybrid optical current transformer. This article introduces a type of hybrid optical current transformer that get power supplies from a special coil, and gives introduction and discussions on the circuit of power supplies of the transformer mainly. The article introduces the method of designing and testing the circuit of power supplies from the special coil. The results showed that the circuit of power supplies can supply power about 200mW to the high potential circuit of optical current transformer, and the ripple of voltage output at each terminal is less than 20mV. The monitor and control circuit can protect the whole power supplies circuit in condition of bus high current such as short circuit well.更多还原