Development of Technical Solutions for Digital Substations Using Ddigital Instrument Combined Current and Voltage Transformers

The paper discusses technical solutions for the development of instrument transformers for digital substations. A new combination of current and voltage measurement converters for combined transformer voltage class 110 kV and higher is considered. The possibilities of creating digital instrument transformers based on the principles of open architecture are analyzed. In the authors' opinion, such an approach will ensure independence from hardware and software manufacturers. Computer modeling, experimental studies and experimental exploitation of a prototype of the digital instrument combined current and voltage transformer confirm the results presented in the paper.