Universal Grid-Forming Method for Future Power Systems

Power system inertia typically refers to the energy stored in large rotating synchronous generators. Dynamics and stability of traditional power is closely linked natural these In recent years, increasing amount generators have been replaced by high different type inverter-based generating units connected at voltage levels system. Therefore, dynamics future low-inertia systems will be increasingly dominated control synchronization resources. One essential issue that typical grid-following with phase-locked-loop (PLL) -based generation not enough guarantee frequency systems. grid-forming inverter methods proposed developed. Currently there does exist any universal method. this paper tries propose a new frequency-locked-loop (U-FLL) method which for grid-supporting loads. Advantageous operation U-FLL strategy confirmed multiple simulations shares resources MV HV hybrid as well 100 % LV, networks.