Development of a microgrid controller for black start procedure and islanding operation

In recent years an increasing interest in power systems with a more decentralized grid control in terms of a cell oriented grid structure or microgrids can be observed. Therefore, new control and operation control strategies have to be developed to fulfil different requirements. The overall focus in this paper is the development, implementation and test of an operation control for black start and islanding condition in a microgrid (MG) as a technical feasibility study. Therefore, two different modes for power-sharing among the decentralised energy resources (DER) have been developed. Furthermore, the dependence of operation time on different factors such as the initial battery charge level, intermittent nature of renewable energy sources, load level and the blackout occurrence time has been investigated.