Formation of Operating Principles of Control Systems for Devices for Changing the Transformation Ratio of a Power Transformer Based on Semiconductor Switches

The development of domestic semiconductor power elements currently allows their use in high-voltage AC networks, including for replacing contact assemblies of various switching devices, due to the deterioration of their characteristics during long-term operation of power contacts. In particular, many regional power systems in Russia underutilize voltage regulation capabilities by switching the transforma- tion ratio due to the deterioration of most switching devices in power transformers and autotransformers. Modernizing switching devices using semiconductor elements requires the development of dedicated circuit designs and their integration with an automated control system that takes into account the operating characteristics of semiconduc- tors. This article presents the results of developing a control system for switching devices using triac switches.