Research Optimal Sizing Allocation Of Based On Source-Storage-Load Microgrid

The characteristics of microgrid,energy storage system and load are fully considered,and the changes of key parameters in whole life cycle of microgrid are taken into account,and optimal sizing allocation of based on source storage load microgrid is researched in this paper.Optimal sizing allocation rules of based on source-storage-load microgrid are analyzed,all kinds of parameters are considered as constants which differents optimal allocation of traditional study.The influence of change of self balance rate,load demand,micro source generation cost and real time sale/purchase price of microgrid in the whole life cycle of microgrid is considered in this paper,optimal allocation sizing of connected microgrid is studied.And considering the influence of charge and discharge depth of battery,permeability of renewable energy and the change of fuel price of diesel generator,and the optimal allocation sizing of stand-alone microgrid is studied.The simulation case verifies rationality of model and obtains optimal allocation scheme,and the optimal allocation scheme is obtained by math method.The specific work of this article is as follows:First,the characteristics of source,storage and load in microgrid are analyzed.Storage model,load model and micro source are established.Second,the optimal sizing allocation rules of based on source-storage-load microgrid are researched.In the connected microgrid,frequency and power of the microgrid are supported by connecting with grid,the optimal allocation of microgrid economy is the main goal.In stand-alone microgrid,the uncontrollable micro source should allow full play to environmental and economic benefits and storage devices smooths power fluctuations;and the controlled micro source ensures for the continuous power supply of the load,the frequency and the electricity of the system.The optimal sizing allocation of microgrid needs to take full account of the characteristics of source-storage-load and make multi-objective optimization allocation.Third,in the connected microgrid,the optimal sizing allocation rules of system are utilized.Considering the influence of change of self balance rate,load demand,micro source generation cost and real time sale/purchase price of microgrid on optimal sizing,taking the optimal total cost as the objective function,considering the constraint conditions of environmental protection,economy and system power balance.The optimal sizing allocation economic model of based on source-storage-load connected microgrid is established which used the simulation case to prove the rationality of the mode.Fourth,in stand-alone microgrid,the optimal sizing allocation rules of system are utilized.Considering the influence of change of charge and discharge depth of battery,permeability of renewable energy and the change of fuel price of diesel generator,taking the optimal total cost as the objective function,considering the load absence rate and the quantity of the micro source.The optimal sizing allocation economic model of based on source-storage-load stand-alone microgrid is established which used the simulation case to prove the rationality of the mode.Fifth,taking full consideration of the characteristics of source-storage-load,and enhancing the complementary benefits of mixed use among micro sources,it is concluded that wind/PV/Wood/storage allocation is the best allocation scheme of microgrid which has the economic competitiveness and environmental protection of the whole life cycle.