Comparative study on control and stability of synchronous condenser and grid type SVG in new energy power systems

With the continuous increase in the proportion of new energy generation, a large number of new energy equipment are connected to the power grid through power electronic conversion devices, resulting in significant changes in the characteristics of the power system. This article focuses on the application of synchronous condenser and grid type static var generators (SVG) in new energy power systems, and proposes and compares the control strategies of the two devices and their impact on system stability. By modeling and analyzing the dual closed-loop control strategy of the synchronous condenser and the virtual synchronous generator (VSG) control strategy of the grid type SVG, combined with MATLAB/RT-LAB simulation platform verification, the performance differences between the two devices in dynamic reactive power regulation, harmonic suppression, and system impedance characteristics were revealed. The research results can provide reference for equipment selection and control strategy optimization of new energy power plants.