Supply-demand Coordinative Optimization Of Isolated Microgrid Considering Time-of-use

With the continuous development of demand side response technology,the combination of the optimized operation of isolated microgrid and demand response has become a research hotspot of many scholars.At present,it is very important significance for the promotion and application of isolated microgrid to realize the coordinative optimization of resources on both sides of supply and demand and improve the flexibility,economics and security of isolated microgrid.This topic using demand response,put forward isolated microgrid supply-demand of the coordinative optimization method considering time-of-use,implements the effective coordination and and utilization of resources on both sides of supply and demand.Specific contents include the following:1.Resources on both sides of supply and demand can achieve supply-demand coordinative optimization is determined by their operation characteristics.Firstly,the mathematical modeling of distributed generators and the typical flexible load are established.The operation characteristics of the resources on both sides of supply-demand were studied and analyzed.2.The supply and demand distribution characteristics of isolated microgrid determine the realization of supply and demand coordination.This topic on the analysis of the renewable power distribution and load demand characteristics,on the basis of defining the concept of equivalent load in isolated microgrid,the equivalent load model was established,and according to the distribution characteristics of equivalent load,puts forward the isolated microgrid supply-demand of coordinative optimization framework and strategies,this strategy can fully coordinate various resources on both sides of supply and demand.3.Price signals are of great significance in guiding users’ power consumption behavior and motivating users to participate in supply-demand coordinative optimization.The membership function and the fuzzy C-means algorithm are used to reasonably divide the peak-valley period of the equivalent load demand of isolated microgrid.According to the price elasticity of power demand,the optimization model of time-of-use is established to minimize equivalent load peak,peak-valley difference.The effectiveness of the model is verified by a numerical example.4.In order to effectively enhance the flexibility,economy and stability of isolated microgrid,on the basis of the time-of-use to optimize the equivalent load demand,an isolated microgrid supply-demand coordinative optimization model considering time-ofuse is established.And the feasibility and validity of the proposed strategy and model are proved by example simulation.