title: A Novel Transient Fault Current Sensor Based on the PCB Rogowski Coil for Overhead Transmission Lines.
abstract: The accurate detection of high-frequency transient fault currents in overhead transmission lines is the basis of malfunction detection and diagnosis. This paper proposes a novel differential winding printed circuit board (PCB) Rogowski coil for the detection of transient fault currents in overhead transmission lines. The interference mechanism of the sensor surrounding the overhead transmission line is analyzed and the guideline for the interference elimination is obtained, and then a differential winding printed circuit board (PCB) Rogowski coil is proposed, where the branch and return line of the PCB coil were designed to be strictly symmetrical by using a joining structure of two semi-rings and collinear twisted pair differential windings in each semi-ring. A serial test is conducted, including the frequency response, linearity, and anti-interference performance as well as a comparison with commercial sensors. Results show that a PCB Rogowski coil has good linearity and resistance to various external magnetic field interferences, thus enabling it to be widely applied in fault-current-collecting devices.
authors.affiliation: School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. lyd@sjtu.edu.cn.
authors.forename: Yadong
authors.initials: Y
authors.lastname: Liu
authors.affiliation: School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. xiexiaolei0116@126.com.
authors.forename: Xiaolei
authors.initials: X
authors.lastname: Xie
authors.affiliation: School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. yuehu@sjtu.edu.cn.
authors.forename: Yue
authors.initials: Y
authors.lastname: Hu
authors.affiliation: School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. qian_yong@sjtu.edu.cn.
authors.forename: Yong
authors.initials: Y
authors.lastname: Qian
authors.affiliation: School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. shenghe@sjtu.edu.cn.
authors.forename: Gehao
authors.initials: G
authors.lastname: Sheng
authors.affiliation: School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. xcjiang@sjtu.edu.cn.
authors.forename: Xiuchen
authors.initials: X
authors.lastname: Jiang
keywords: PCB Rogowski coil; differential winding; fault current; high-frequency transient fault current; open structure; overhead transmission line