Rogowski coil electronic current transducer applied to protection and monitoring of GIS

The errors, interferences and dealing of Rogowski coil electronic current transducer during its development are discoursed in this paper. And the analytical method of the influence of the temperature on coil and the application of the temperature ageing in the coil stabilization has been brought forth. It is also stressed that the coil and the new type return wire be wound with strict techniques makes very efficient anti-interference for the coil. The findings, based on many of tests, prove that the return wire is of very efficient anti-interference, and that the sample can achieve the guideline of 0.5 degree, which is adequate for the protection and monitoring of power system.