Energy Management of Isolated Micro-grid With Wind Turbines and Seawater Desalination Devices

Abstract

Energy management of isolated micro-grid with wind turbines and seawater desalination devices is of great significance to the use of wind power, the supply of fresh water resources and the economic operation of micro-grid. This paper established isolated micro-grid model including wind turbines, seawater desalination devices, diesel generator and hybrid energy storage consist of battery and super capacitor. On the basis of stable operation, considering the controllability of seawater desalination and the damage difference to the battery between deep charge deep discharge and shallow charge shallow discharge, according to battery life loss under difference SOC and difference discharge power, combined with the seawater desalination production profit, achieved long time energy management aiming at economic operation of micro-grid. Built micro-grid model based on analog hybrid real-time simulation platform PXI and simulated the energy management. The result verified the correctness, feasibility and economy of the proposed strategy. Keywords-micro-grid; seawater desalination; energy management; hybrid energy storage; real time simulation