Voltage Weak DC Distribution Grids

Low Voltage DC Distribution System

AC distribution is conventional and its future is now under threat with its major competitor DC distribution. Transformer voltage conversion can be replaced completely by DC-DC converter in DC distribution with voltage and current regulation. DC energy and energy saving as the distribution match well with the recent technology in renewables, energy storage, computer and control electronics, mod...

DC Voltage Control and Power-Sharing of Multi-Terminal DC Grids Based on Optimal DC Power Flow and Flexible Voltage Droop Strategy

This paper develops an effective control framework for DC voltage control and power-sharing of multi-terminal DC (MTDC) grids based on an optimal power flow (OPF) procedure and the voltage-droop control. In the proposed approach, an OPF algorithm is executed at the secondary level to find optimal reference of DC voltages and active powers of all voltage-regulating converters. Then, the voltage ...

Controlling of Distribution Voltage for DC Micro-grids Using MRAS, Fuzzy Control and Gain-Scheduling Technique

---------------------------------------------------------------------***--------------------------------------------------------------------Abstract Micro-grid is a novel conceptual power system for smooth installation of many Distributed Generators which is used for distributing the power in order to provide high quality. The most of micro-grids adopt ac distribution as well as conventional po...

Voltage Profile Optimisation for Weak Distribution Networks

Recent advances in power electronic technology have seen the development of a range of converter based power compensation systems which have the potential to improve supply quality and increase line utilisation in weak distribution networks at relatively low cost. However, the interaction of these devices with the supply network has not been well documented. In this paper we investigate the ste...

DC distribution and power electronics applications in Smart Grids