Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Development of adaptive digital combined voltage and current transformer for smart GRIDS G.I. VOLOVICH D.V. TOPOLSKY I.G. TOPOLSKAYA The paper presents approaches to solving the problems of development of adaptive devices, automation, control and protection for Smart Grids. For these purposes are being developed adaptive digital combined current and voltage transformers (ADCCVT) intended for use as a remote terminal SCADA-system, including intellectual current and voltage sensors for control and protection of electrical substations, as well as for automated electricity metering. The construction of the ADCCVT serves to combine current and voltage transducers, so that the analog-to-digital sampling of voltage and current of the same phase performed synchronously. In combined converters sampling is carried out simultaneously in a natural way through the use of multi-chip ADC with simultaneous starting conversion. Is a block diagram of the ADCCVT, the algorithm of its operation, the example programming model of the current transformer in VisSim. The substantiation of the application package VisSim simulation is a tool in the design of the ADCCVT. Keywords: digital measuring transformers, Smart Grids, SCADA (Supervisory Control And Data Acquisition), digital substation, Remote Terminal Unit (RTU), Communication System (CS) Contacts: E-mail: g_volovich@mail.ru Pp. 36-41.