Behavior of a High Inverter-Based Resources Distribution Network with Different Participation Ratios of Grid-Forming and Grid-Following Inverters

The electrical grid is facing new challenges due to the transformation to high penetration of inverter-based resources. These inverters' controllers are either grid-forming or grid-following. In this paper, the operation of a distribution network with high inverter-based resources is investigated with different ratios of grid-forming and grid-following inverters. The investigation was in two modes: grid-connected and islanded modes. The results show that as the ratio of the grid-forming inverters increased in the network, an enhanced performance was observed and the ability to stabilize frequency and voltage during disturbances was improved in both modes.