Reconstruction method for power distribution network with distributed power supply after serious fault

Abstract

The invention belongs to the technical field of power system power distribution network planning and operation, and particularly relates to a reconstruction method for a power distribution network with a distributed power supply after serious fault. The method for reconstructing the power distribution network with the distributed power supply after serious fault is suitable for rapid reconstruction of the power distribution network with the distributed power supply after the serious fault, and is convenient to model, high in simulation precision, high in calculation efficiency and strong in expansibility. The method comprises the following steps: 1, establishing an objective function and constraint condition model of a reconstruction problem after the power distribution network has the fault; 2, performing modeling analysis on the distributed power supply when power distribution network fault occurs; 3, adopting a spanning tree model based on the graph theory to solve an optimal methodof island division; 4, completing the weight dynamic division of a multi-objective function through a membership function, and normalizing a power distribution network reconstruction multi-objectiveoptimization problem into a single-objective optimization problem; and 5, solving the reconstruction optimization problem based on an empire competition algorithm to obtain an optimal reconstruction strategy after the serious fault of the power distribution network.

Description

technical field [0001] The invention belongs to the technical field of power system distribution network planning and operation, and in particular relates to a reconstruction method after a serious failure of a distribution network containing distributed power sources. Background technique [0002] At present, the new smart distribution network has the ability to actively manage a large number of distributed energy sources. It can independently coordinate and control intermittent new energy and energy storage devices, actively consume renewable energy and ensure the safe and economic operation of the network. However, when the distribution network encounters serious faults, the operator may not be able to take timely and accurate countermeasures, resulting in the continuous expansion of the scale of the accident, and eventually the entire distribution network collapses and blackouts occur. At this time, it is necessary to quickly recover and reconstruct the distribution net...

AI Technical Summary

Problems solved by technology

However, these methods have high computational complexity and cannot meet the real-time requirements for rapid reconstruction and restoration of power supply after a distribution network fault, and cannot be directly used for reference.

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