Читать книгу Smart Grid and Enabling Technologies - Frede Blaabjerg - Страница 58

SG technologies contain a large number of different controllable elements, systems, and subsystems which require coordination and proper management. As an example, DERs are connected to the grid directly or through a power electronic interface. The voltage source inverter (VSI) is connected to the grid as an interface to support the suitable modification of the grid voltage and frequency [61]. The entire grid is becoming more power electronics dominated with very low inertia. Controllability of such a system becomes a major challenge for stable and efficient operators.