In order to solve the poor traveling consistency of existing traveling wave sensors that affects the accuracy of traveling wave location

a printed circuit board(PCB)traveling wave sensor based on the principles of Rogowski coil is proposed. In this paper

the high frequency working characteristics of the Rogowski coil are given

and the structure and working principles of the PCB sensor are studied. And the formula for calculating the mutual inductance coefficient of the PCB sensor is deducted. The anti-interference mechanism of the external magnetic field is analysed to provide a theoretical basis for detecting the traveling wave effectively. The PCB traveling wave sensor has the advantages of novel structure

wide frequency response

good consistency

strong anti-interference ability

etc. The experiment results indicate that the PCB traveling sensor can improve the consistency of precise traveling wave detection effectively and deliver transient traveling wave signals of high frequency reliably. This work is supported by National Natural Science Foundation of China (No. 51577013

No. 51377012) and Natural Science Foundation of Hunan Province of China (No. 2015JJ1001).