An Electrical Accommodation in Digital Grid System Using DC Sub-grid

This paper presents a DC sub-grid for electrical accommodation in a digital grid system. The sub-grid is composed of a positive DC voltage line and a negative DC voltage line, which are connected to a couple of inverters in the digital grid router. The adaptive hysteresis current control technique is applied to control the sub-grid lines maintaining the voltage at a constant value while to accommodating the given power. The simulation results show that the proposed control algorithm yields stable responses and enable the DGRs to accommodate the given power almost exactly.