Research Of Microgrid Optimization Scheduling Method Based On Customer Interactive

With the widespread application of distributed generation and increasingly requirements of power supply quality and reliability,a new type of of power system structure named"Microgrid" was proposed.The microgrid will be an important part of the utility grid under the background of smart grid in the future.The key to ensure the the micro grid safety,economic operation is its operation and control system.This dissertation proposes a optimal scheduling model which can make the microgrid economical,efficient,universal and reliable by focusing on the micro sources coordination,the microgrid safey operation and customer interaction.The main body of microgrid is the different types microsources and their associated control system.There are various microsources with different energy and interface types,and it is distinct with the macro grid,which usually has single type power source.Different Grid-connected interfaces and control strategies can make the microsource have different power frequency characteristics.Therefore,this paper draw up the mathematical model of every different type microsource,and studies their operation characteristics.The purpose of microgrid optimizing operation is the coordination and optimization among microgrid,distribution network and users.Three demand response strategies related to time shift,peak shift and load shedding are introduced to the microgrid houly optimization scheduling.The demand response strategies were incented by TOU and compensation mechanism.Based on the demand response,a variety of optimization objectives of the scheduling are modeled for a microgrid considering intermittent micro sources and energy storage.Then a comprehensive evaluation index is proposed to assess the microgrid operation in a quantitative way.