DG optimized configuration method taking into account operation risk cost of power distribution network

Abstract

The invention discloses a DG (Distribution Generation) optimized configuration method taking into account operation risk cost of a power distribution network. The method includes steps of S1, constructing a power distribution network operation risk cost model in a DG grid connected mode; S2, constructing an operation risk cost model in a DG off-grid operation mode; S3, constructing target functions and constraint conditions of power distribution network operation risk cost according to the S1 and the S2; S4, solving S3 by adopting an improved particle swarm optimization and obtaining particles, which correspond to a configuration scheme, with the optimal adaptive value change rate. According to the invention, the DG optimized configuration model taking into account the operation risk costof the power distribution network is established; and risk costs in DC grid-connected operation and off-grid operation are taken as the target functions and DG access capacity, active power balance, no threshold crossing of node voltage, no overload of lines and no threshold crossing of reverse load flows and the like are taken as the constraint conditions in the DG multi-target optimized configuration model, and a Pareto multi-attribute decision method is adopted for processing the constructed multi-target model, so that DG optimized configuration is achieved.

Description

technical field [0001] The invention belongs to the technical field of distribution network, and in particular relates to a DG optimal configuration method considering the operation risk cost of distribution network. Background technique [0002] Distributed power generation DG (distribution generation) plays a very important role in optimizing the energy supply structure, coping with climate change, protecting the ecological environment, and promoting sustainable economic and social development]. With the continuous improvement of distributed power generation technology, the power generation method combining traditional power generation and distributed power generation will have more and more obvious advantages. DG grid connection has positive effects such as reducing system network loss and grid investment, helping to adjust peaks and valleys, and improving system safety and reliability. At the same time, it will also bring about reduced power quality, two-way flow of powe...

AI Technical Summary

Problems solved by technology

[0003] However, in terms of planning models, most of them plan with the single goal of minimizing operating risk or operating cost, and lack of comprehensive consideration of multiple indicators

The structure of the distribution network is complex and the amount of operating data is large. It is urgent to find an optimization algorithm that can solve the optimization model more efficiently and accurately.

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