Development of a Dynamic Hybrid Meshed AC/DC Transmission Grid for Studying Small-Signal Rotor Angle Stability

An embedded meshed VSC-HVDC network has been proven to be able to improve small signal stability as well as to help damping inter-area oscillations of the ac power grid. As large-scaled embedded HVDC grids are a developing trend in Europe, it is necessary to study their influence on power system stability. This paper presents dynamic parameter data for generators and HVDC converters within a large-scale meshed and embedded DC network benchmark test system, facilitating research on small-disturbance oscillatory stability. Immune Algorithm is applied for designing the generator PSS-parameters. With these dynamic parameters, this test system can serve as a valuable tool for in-depth investigations into the influence of large-scale embedded DC networks on small-signal stability.