The invention relates to a cluster division method of a building
direct current interconnection power
distribution system for photovoltaic consumption rate improvement. The cluster division method comprises the following steps: acquiring building group data; obtaining a
spanning tree representing the
interconnection condition in the cluster; calculating the interest-considered
interconnection cost of the
spanning tree, and generating a cluster division result, an interconnection condition and a maximum photovoltaic consumption rate when the fitness is optimal; and (3) changing the interest rates and the
energy storage coefficients, returning to the step (2), generating a cluster division interconnection diagram under different interest rates and different
energy storage coefficients, and analyzing the influence of the interest rates and the
energy storage coefficients on the cluster division result and the maximum photovoltaic consumption rate when the fitness is optimal. According to the method, the
advantage of iterative optimization of the
particle swarm algorithm and the
advantage of uniform cluster division of the K-means
algorithm are combined, cluster division can be more uniform, the
electricity purchase demand of the building for the
power grid is reduced, the consumption rate of photovoltaic energy is improved to the maximum extent, and the load demand, namely the
peak load, of the power utilization peak period of the building is reduced.