Application Of Distributed Coordinated Predictive Control In Micro-Grid

As an important development concept of modern power system,micro grid is characterized by low carbon,high efficiency,green,kindness and intelligent.Micro grid has become the focus of global attention and the national strategy of many countries,focusing on the harmonious development of power grid and nature,power grid and environment,the harmonious development of power grid and society,and the sustainable development of human beings.The purpose of this paper is to based on the model predictive control theory,focuses on the research of micro grid power system,and proposed a distributed coordinated predictive control method for micro grid generation using seawater desalination with the actual situation.The main work and contribution are as follows:First of all,The microgrid power generation system is studied in this paper.Micro grid is composed of renewable energy technologies(like wind power and photovoltaic power generation),new grid energy management system and the transmission and distribution infrastructure,it can improve energy efficiency,improve the safety and reliability of power supply and reduce power loss to reduce the impact on the environment.In this paper,the wind power generation system and photovoltaic system are combined reasonably,and hybrid power generation technology is adopted to reduce the power shortage or imbalance caused by single resource.Secondly,for each subsystem of micro grid power system is an independent operation and has strong nonlinear characteristics,and model predictive control has a strong complex objective function and various complicated constraints,and superior dynamic performance,it is very suitable for micro grid.The objective function is chosen based on the principle that the wind power subsystem is operated as the primary generation system,the solar power subsystem is considered as the auxiliary generation system,and battery bank is only activated when the wind solar power subsystem can not satisfy the power demand to make system reach the optimum.To conclude,base on the actual situation,the micro grid can be applied in seawater desalination.The system can not only reach the load in need of each subsystem,but also restrain excessive volatility of the output power and protect power equipment under complex meteorological conditions and variable load disturbances.The results verify the validity and reliability of the controller designed...