Approbation of the Control Angle Algorithm of the Phase Shifting Transformer in Order to Integrate RES into the Electric Power System

This paper discusses the application of a phase-shifting transformer (PST) for the integration of high-power renewable energy sources (RES) into existing high-voltage grids. The global process of the electric power industry decarbonization is fast-paced nowadays. Many countries have committed themselves to building climate-neutral economies. The development of alternative energy generation in Russia is also one of the tasks set for the electricity industry. Russia has great potential in the development of RES. However, due to the instability of RES generation, there are difficulties with their integration into the power system. In some cases, the use of PST may be one of the possible solutions to this problem. In order to respond correctly to changes in the RES operating mode, the operators should be able to determine promptly the control angle of a PST. This is possible through the developed algorithms for the control angle calculating based on the current parameters of the mode and circuit. As a result of the conducted studies, it was possible to show that the control of modes using PST when integrating RES into the electric network can increase the reliability of power supply and make it possible to realize the output of all RES generated power, taking into account its generation instability.