Design of a Windowed Sinc for a Simplified Characterization of Low-Power Current Transformers

A massive number of transducers and sensors is needed to transform the power network into a smart grid. The measurement results coming from such devices are crucial for system operators and electrical utilities. To this purpose, transducers must be periodically characterized to confirm their reliability and accuracy. Nevertheless, the characterization process is complex, expensive, and time-consuming. Researchers are then asked to develop new tests that may facilitate the characterization of the devices. Consequently, this paper aims to provide a simplified and fast characterization procedure which maintains the expected accuracy standards. The procedure is described and then applied for the characterization of commercial low-power current transformers. The results demonstrate the benefits of the newly developed characterization signal, as well as its applicability to commercial devices.