Active distribution network united planning method based on active management mode

Abstract

The invention provides an active distribution network united planning method based on an active management mode. The method comprises the steps that (1) the access capacity and the new branch capacity of a distributed power supply are used as optimization variables to carry out chromosome coding, and an evolutional algebraic threshold value is set; an initial population is randomly generated according to the constraints of distributed power supply constant volume programming, and an evolutional algebra is set to 1; (2) the comprehensive cost of the planning scheme corresponding to each chromosome in the current population is calculated; whether the current evolutional algebra reaches the evolutional algebraic threshold value is judged, and if so, the planning scheme of the lowest comprehensive cost is selected and used as the final active distribution network joint planning scheme to end, otherwise a next step is carried out; and (3) chromosomes in the current population are selected, crossed and mutated to acquire the next generation of population; the evolutional algebra is added with 1; step (2) is back. According to the invention, the running cost of a planned distribution network is determined by considering the active management mode of the active distribution network; the method is in line with actual operation; and the scheme is reasonable.

Description

technical field [0001] The invention belongs to the field of distribution networks, in particular to an active management mode-based joint planning method for active distribution networks. Background technique [0002] Distributed power generation is a small power generation device installed on the user side. It has developed rapidly due to its good economic and environmental benefits. The access of a large number of distributed power sources has changed the structure of the power distribution network, affecting the planning and run. [0003] The active distribution network is a power distribution system that manages the power flow through a flexible network topology to actively control and actively manage distributed energy. It can increase the system's ability to accept distributed energy, improve the system's ability to accommodate renewable energy, Improve the utilization efficiency of power distribution system assets and slow down its upgrade investment, while improvin...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the research content on active distribution network planning at home and abroad involves distributed power generation planning, active distribution network network planning, and power supply reliability evaluation of active distribution network. The research focus is on a single distributed power generation site selection. In terms of constant capacity planning, distribution network expansion planning considering the influence of distributed power sources, and some characteristics of active distribution networks, when planning active distribution networks for distributed power sources in the actual operation process, active distribution network planning is not considered. The active management mode of the distribution network, or the description of the active management mode is relatively vague, which is difficult to meet the needs of the design and construction of the active distribution network at this stage

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