A Review of Distributed Secondary Control Architectures in Islanded-Inverter-Based Microgrids

The increasing energy demand, the shortage of resources, and environmental challenges faced by conventional power-generation systems are some ongoing modern power systems. Therefore, many efforts have been made scientific community to develop comprehensive solutions overcome these issues. For instance, current technological advances allowed integration distributed generators into systems, promoting use microgrids However, renewable introduced new traditional control system schemes. To challenges, a hierarchical approach has proposed for sources. In other words, scheme divided three levels, primary, secondary, tertiary, present in Due extensiveness this topic, overview is focused on secondary mainly AC isolated microgrids. improve quality several schemes well-known problem frequency voltage deviation. Some also adequate active/reactive sharing techniques optimize utilization resources. Additionally, reducing communication load, lower network cost adding robustness against problems. This article presents an insight different used A islanded presented. addition, implementation explained orderly sequential manner.