Joint Planning Method for Energy Storage System and Soft Open Point in Distribution Networks Considering Carbon Emission Reduction Allocation and Cluster Division Strategy

An energy storage system and soft open point configuration approach considering the allocation of carbon emission reduction income and cluster division strategy is proposed to solve the problem of the mismatch between the absorption capacity and growth rate of the system caused by a large-scale access of distributed renewable energy sources to the distribution network. Firstly, all nodes are divided into several cluster regions based on the electrical distance and its power and load characteristics. Secondly, based on the improved calculation model of node carbon emission flow rate, an evaluation model is proposed to calculate the influence which energy storage system and soft open point have on the carbon emission flow of the distribution network and the carbon emission reduction apportionment of energy storage to each user. Then, a joint planning method of energy storage system and soft open point is proposed to minimize the cost of energy storage life cycle and maximize the benefits of carbon emission reduction. Finally, based on a simulation example of the IEEE 33 node distribution network, this paper verifies the correctness of the improved carbon flow calculation method and the validity and economy of the cluster division and energy storage system configuration method.