Fully automatic substation locating and sizing method considering geographic information

Abstract

The invention belongs to the technical field of substation locating and sizing in electric system planning, and relates to a fully automatic substation locating method considering geographic information. The method comprises the following steps of: (1) acquiring locating data, in which based on two-dimensional space load prediction, land blocks for locating are divided in combination with a land block vertex coordinate file for regions where substations can be built, the prices of the land blocks are input, and land block division is not performed on regions where the substations cannot be built; (2) applying a transportation model and a single median locating model to give an initial solution of substation distribution; (3) selecting related candidate land blocks of each subdistrict, in which a contour line principle is applied to screen land blocks to select candidate land blocks which need to be investigated; (4) applying the single median locating model which increases linear constraints of boundaries of the land blocks to analyze each candidate land block to find an optimum substation location of each subdistrict; and (5) performing iterative calculation until the precision requirement is met. The method can perform fully automatic locating based on land prices, and can automatically avoid the regions where the substations cannot be built.

Description

technical field [0001] The invention belongs to the technical field of power system planning substation site selection and capacity determination, and proposes a fully automatic substation site selection and capacity determination method that can take geographical factors into account. Background technique [0002] In power grid planning, substation site selection is a basic work, which determines the location of substation construction in the target year planning area based on the spatial load forecast results. The site selection of substation plays a connecting role in the power grid planning process. Whether the site selection is reasonable or not plays a vital role in the future power grid construction, outgoing line layout, and network structure. Therefore, the actual geographical information factors should be considered reasonably in the process of site selection for substations. It becomes a necessary prerequisite for whether the site selection algorithm can meet the ...

AI Technical Summary

Problems solved by technology

This type of early algorithm mainly studies how to apply various optimization methods to the field of substation site selection, and has not considered the application of the algorithm to actual engineering, and is still in the theoretical research stage;

[0004] (2) It is possible to automatically search for site selection, but it can only avoid the area where the station cannot be built, and the site selection algorithm that cannot consider the differences between different blocks

[0006] It can be seen that the current substation site selection algorithm has various deficiencies in the process of considering geographic information factors, and there is no site selection method that can automatically identify the geographic information of the plot for fully automatic large-scale search

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