Design and testing of Rogowski Coil Based PCB Double Helix for Gas Insulated Switchgear 150 KV aplication

Rogowski Coil is a current sensor that is often applied to the medium voltage. Rogowski Coil Based PCB Double Helix is a low-power sensor designed to measure the current that can be input into the Gas Insulation Switchgear (GIS). Not only good linearity in the measurement but also wide measurement ranges are needed to measure the disturbances on the power system. Initial signal processing circuit is required which is used for processing the sensor output waveform so that its value can present the current measured. In this paper describes the process optimization and calibration of the Rogowski coil Based PCB Double Helix currents sensor. Tests carried out using Current Transformers with 1250A maximum output current, and output rogowski sensor following the standard IEC-60044-8.