Flexible Rogowski coils possess numerous salient features, including real-time current measurement, rapid response times, no saturation, minimal phase errors, and a broad bandwidth range. Moreover, they exhibit excellent linearity and robustness against overcurrents, boasting low power consumption and the ability to measure irregular conductors. The output voltage of a Rogowski coil is directly proportional to the differential of the measured current. By integrating this output, an output voltage that is proportional to the measured current is obtained. In practical applications, Rogowski coils are extensively utilized in sectors such as power transmission, communications, healthcare, and the automotive industry. Within the power system, they are employed for current measurements, especially where traditional devices fail to meet requirements. Additionally, Rogowski coils are suitable for analyzing power quality, delivering precise current data that assist users in assessing power quality conditions and forecasting and preventing power-related incidents.
