Research On Optimal Allocation And Cooperative Scheduling Of Energy Storage On The Load Distribution Side Of Source Transmission

With intelligent power grid construction and the development and utilization of clean energy,the distribution of power supply,load,energy storage,such as the characteristics of multi-types resource showed multiple,distributed development,to meet the increasing load demand and the need to use the kinds of power supply and load regulation means,as the "double carbon" goal guidance is put forward,the structural transformation of energy is quietly,A large number of distributed energy,controllable load,multi-type energy storage system and other resources are connected to the grid,making the traditional distribution network gradually change from one-way power flow to two-way power flow active distribution network.Clean energy,including wind power,photovoltaic（pv）grid after the output of the ins Tableility,uncertainty,multi-type load demand response and energy storage system schedulable sex are planning,operation and dispatching of the distribution network have brought a lot of pressure and challenges,how to comprehensive consider all aspects of requirements under the premise of effective economic transfer of power distribution network in all kinds of resources,It is of great significance to realize "energy saving and carbon reduction" and optimal economic operation of distribution network dispatching.The main research work of this thesis is summarized as follows:（1）Study on "source-network" cooperative dispatching of distribution network:Traditional distribution network already can not adapt to the new energy grid under the situation of distribution network planning requirements,according to the source-network coordination needs to improve the optimization problem,first has carried out many interests subject analysis,overall consideration multi-stakeholder,secondly on the basis of this puts forward double hybrid optimization theory,es Tablelish a comprehensive distribution network fee for the upper floors,The integrated cost of distributed power supply is a two-layer optimization model at the lower level.Finally,the hybrid particle swarm optimization algorithm with improved learning factor and constraint factor and the double-layer nesting algorithm with genetic algorithm are used to solve the model.The calculation results show that: Compared with the "source-network" collaborative scheduling model with distributed power output,the comprehensive annual cost of the model is 5%lower than that of the model with traditional power output,which verifies the effectiveness and optimality of the proposed model.（2）Study on "source-network-load" coordinated scheduling of distribution network:Growing ecological environment problems and accelerate the macro strategic targets for energy conservation and emissions reduction in China power grid,low carbon transformation in the light of the requirements of low carbon economy and clean energy grid brings uncertainty,first to carry out the ins Tableility of the efforts of the new energy,to optimize the optimal power flow calculation and load demand response analysis,Secondly,the optimization control model of low-carbon distribution network is constructed,which takes comprehensive load demand response and stepped carbon emission cost into consideration.Finally,the multi-objective weighting method and the solution method are used to solve the model,and the cooperative dispatching scheme of low-carbon distribution network under comprehensive consideration of multiple load demand response is obtained.The results of calculation examples show that the participation of controllable load in dispatching can improve the overall schedulability of distribution network,and has a very positive significance for carbon reduction and emission reduction,realizing more economical consumption of renewable energy and reducing the total operating cost of distribution network.（3）Research on "source-network-load-storage" collaborative scheduling of distribution network: Energy storage,accelerate development of a large number of grid to solve the "wind" "discard" phenomenon,improve the new energy given and carbon reduction provides effective means for energy conservation and emissions reduction,in view of the continuous improvement of new energy given,carbon reduction target,first carry out the energy storage system,response model,access to the location characteristics and the analysis of the energy storage system of joint scheduling optimization,Next constructed considering many lateral position（power supply side-the grid side-lateral load coordinated）storage access system coordinated response characteristics and ladder type carbon cost of low carbon type distribution network optimization control model,finally using can optimize model,verify the characteristics of the multi position side energy storage and the economical efficiency of the proposed model and method and optimization.The results show that the energy storage system participating in the coordinated scheduling optimization of the distribution network can effectively optimize the carbon emission curve,alleviate the peak load and play a very important role in the local consumption of uncontrolled clean energy output.