零序电流传感器的研制

The Research and Design of Zero Sequence Current Transducer

本文按照电磁感应的基本原理，导出了在不使用三相电流互感器、零序电流互感器的情况下，提取三相电力系统中零序电流的方法，设计出了结构简单、投资较小，可以安装在安全绝缘距离之外的零序电流传感。该传感器可以应用于小接地电流系统中实现单接地自动选线，本文所提出的方法，可以推广至其他传感器的设计。

Based on the electromagnetic induction principal,the article gives a method of getting zero squence current of three-phase power system without using three phase CT or zero sequence CT.The autho designs a zero sequence current transducer which is simple in structure, cheap in price, and can be installed beside safe distance.The transducer can be used for single phase to earch fault line selection in non-grounded distribution power system.The method put forward by the author can be extended to design of other transducer.