ARI and ARID control of virtual synchronous generator for frequency response improvement

Abstract

The modern power system is progressing from a centralised generation having synchronous generators to the distributed generation having the large-scale integration of renewable energy sources. These renewable energy sources are interfaced with the system through the inverter. Due to the inertia-less nature of inverter, the system becomes prone to frequency instability. The virtual synchronous generator control is used to enhance the frequency stability by introducing virtual inertia in the inverter control. The virtual synchronous generator technique provides flexibility to the researchers to regulate swing equation parameters in real-time. Based on this concept, this paper proposes an autoregulated inertia control as the first contribution to improve the damping effect of virtual synchronous generator control. In the literature, the primary focus is on the inertia control and negligible importance is given to the damping factor control. Therefore, to show the effect of dynamic damping factor, together with dynamic virtual inertia, on the transient stability; an auto-regulated inertia and damping factor control of virtual synchronous generator is proposed as the second contribution. Simulation results of the proposed techniques are compared with the various virtual inertia control techniques in the real-time digital simulator environment. The results show that auto-regulated inertia and damping factor control is the most effective method to provide dynamic frequency support to the microgrid. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

The application of virtual synchronous generator technology in inertial control of new energy vehicle power generation

“…It utilized VSG to control the inertia and damping factor, and the effectiveness of this technology has been verified through simulation. By adjusting the inertia and damping factors, the dynamic frequency variation of micro-grids could be effectively controlled (Rathore et al, 2021). Elizabeth Michael N and other scholars proposed a compensatory technique based on VSG to control the frequency fluctuations of electric vehicle…”

Power‐frequency oscillation suppression algorithm for AC microgrid with multiple virtual synchronous generators based on fuzzy inference system

“…Therefore, the virtual synchronous generator technology provides researchers with the flexibility to adjust the parameters of the swing equation in real-time. Based on the influence of virtual inertia on power and angular frequency, [10][11][12][13] adopted an adaptive virtual inertia control method to improve the dynamic response of the system frequency combined with the advantages of large inertia and small inertia. However, some of the abovementioned studies have failed to fully consider the impact of the damping coefficient on the dynamic response of the system, and the damping coefficient should be further used to adjust the power-frequency characteristics.…”