DG optimization configuration method for dual-layer planning of active power distribution network

Abstract

The invention discloses a DG optimization configuration method for dual-layer planning of an active power distribution network. The DG optimization configuration method comprises the steps of countingcorresponding scene days according to season and weather simulation scenes; considering time-of-use electricity price and different load types, and building a DG upper-layer planning model in the active power distribution network; considering three switching active management modes of distributed power generator output control, on-load voltage-regulation transformer tap adjustment and reactive compensation, and building a DG lower-layer planning model in the active power distribution network; and respectively solving the upper-layer model and the lower-layer model by a particle swarm optimization method and a prime-dual interior point method, determining optimal position and capacity of DG, calculating annular investment income of the active power distribution network, outputting the optimal position and capacity of the DG if an error between the investment income and expected annular investment income is smaller than a set threshold, otherwise continuing to optimize position and capacity of the DG. The time-sequence characteristics of the load and the DG and the active management mode are considered, the DG can be utilized to the maximum as well as the actual condition is conformed, and the annular benefit of the power distribution network is improved.

Description

technical field [0001] The invention belongs to the field of smart grids, in particular to a dual-level planning DG optimal configuration method for an active distribution network. Background technique [0002] With the continuous growth of power demand, the continuous deepening of traditional energy shortages and the increasingly prominent environmental problems, the development of distributed power generation DG, especially renewable energy generation technology, has received extensive support. Distributed power generation has the advantages of high energy utilization efficiency, clean and environmental protection, and flexible installation locations. It can effectively solve many potential problems in the current power grid, such as high cost and difficult operation, and provides a guarantee for the development of energy-saving and emission-reduction measures in my country. . Scholars at home and abroad have done a lot of research on the optimal configuration of distribut...

AI Technical Summary

Problems solved by technology

However, most of the DG processing methods in the planning process at this stage are mainly based on the rated value of the DG output, without considering the load and timing characteristics of the DG, which deviates from the actual situation to a certain extent

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