| In view of the current network load coordination background,the problems of low response to user participation in grid demand,low grid revenue,low utilization rate of traditional distributed energy resources,and low operating economy of active distribution grid generators are becoming increasingly prominent.It has become an inevitable trend to promote the development of power grids to tap potentials and increase efficiency by deeply excavating customer-side flexible resources and distributed flexible resources,and promoting the coordinated operation of source,network,load and storage.As the proportion of household electricity consumption and the installed capacity of distributed new energy generators increase year by year,the demand-side platform area has gradually become active from the previous load state.At the same time,residential energy consumption and the output of distributed wind turbines have strong differences.Therefore,the traditional distribution network dispatching mode is difficult to achieve higher value creation at the grid level.To this end,the paper aims at the random fuzzy response model of residential flexible load,the energy hub source-load-storage collaborative optimization model considering residents’demand response,and the random fuzzy optimality of the interactive system between energy hub and active distribution network based on System of System(SoS).In-depth research on the trend,the main research includes the following three aspects:Firstly,the research on the demand response model of household flexible load based on random fuzzy theory is carried out.Taking into account the uncertainty of residential energy consumption,a flexible load model of residential households is established based on random fuzzy theory,and a flexible load response model of residents is established based on random fuzzy dynamic time-of-use electricity prices.Secondly,an energy hub source-load-storage collaborative optimization model considering residents’ demand response is established.The power generation characteristics and output model of the flexible unit connected to the energy hub are analyzed,the uncertain output of wind power is described by random fuzzy theory,and the energy conversion model of the energy hub is constructed.The environmental pollution cost is taken as the objective function,and an energy hub source-load-storage collaborative optimization model is established.Finally,the random fuzzy optimal power flow of the interaction system between energy hub and active distribution network based on SoS is studied.This paper establishes SoS framework of multi-energy hubs and active distribution network,and establish a random fuzzy optimal power flow model for active distribution network with the operating cost of distributed gas turbines in active distribution network,power abandonment of distributed wind turbines and system active network loss as optimization goals,the above model is solved by forward-backward generation,NSGA-Ⅱ and the maximum satisfaction decision method,and the optimal power flow information of the active distribution network and the scheduling plan of the system decision variables are obtained,and the system maximization goal is achieved at the same time.The simulation and results show that the model proposed in this paper and its solution algorithm are correct and effective.The flexible load demand response model of residential households based on random fuzzy theory can reduce the electricity cost of residents in court to a certain extent,and obtain customer energy consumption that takes both objectivity and accuracy into account information.In this paper,the particle swarm optimization algorithm is used to solve the collaborative optimization model of energy hub source,load and storage,which can improve the energy hub’s ability to absorb distributed wind power to a certain extent.The paper establishes a random fuzzy optimal power flow model based on the interaction system between the SoS energy hub and the active distribution network,which can reduce the fluctuation range of the node voltage,make the transmission power of the active distribution network branch in a safer range,and at the same time has a certain economic and environmental protection. |
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