Power supply zone partitioning method by use of Delaunay triangulation

Abstract

The invention relates to a power supply zone partitioning method by use of Delaunay triangulation. The power supply zone partitioning method comprises the steps of partitioning power supply zones, including consumption zones, functional zones and power supply zones, forming a specific substation group by use of Delaunay triangulation within the range of the power supply zones on the basis of the position information of substations and determining a power supply architecture, and on the basis of the load of the consumption zones, taking the maximum daily average load ratio of a medium-voltage line as a target and the power supply capability and the power supply radius of the medium-voltage line as constraint conditions, and realizing feeder optimization by optimizing the load combination of the adjacent consumption zones. The power supply zone partitioning method by use of Delaunay triangulation is suitable for the characteristics and the requirements of the power distribution networks at various levels, is targeting, applicable and operable to power distribution network plans, and can be widely applied to power supply zone partitioning.

Description

technical field [0001] The invention relates to a power supply partition method, in particular to a power supply partition method using Delaunay triangulation. Background technique [0002] The power supply partition is based on the high-voltage distribution substation as the source and the medium-voltage line as the network. It is divided into the power supply network for a specific power supply area, in order to achieve the purpose of reliable power supply and reasonable line loss. Power supply zoning can be divided into narrow sense and broad sense. The narrow sense of power supply zoning reflects the situation of the power supply area. The broad sense of power supply zoning is based on the narrow sense of power supply zoning, adding power supply structure, feeder optimization, etc. to reflect the power grid zoning. The existing power supply partition is to divide the area to be planned according to different levels, mainly adopting a two-level partition method. The prin...

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Problems solved by technology

[0014] The above are the existing zoning methods. Due to the limited consideration of these methods, there are certain limitations: 1) The current zoning method only divides into two layers, the zoning level is simple, and the division of the first-level district only considers the administrative There is no scientific and specific method guidance for institutional and natural barriers, and the layering methods are primitive and rough, which is not conducive to the secondary division

2) Although the free zoning method of secondary zoning is simple and easy to implement, it can effectively utilize the original distribution network platform and related planning basic data, but it has high requirements for the selection of forecasting methods when performing load forecasting on secondary blocks

3) The uniform grid method of the second-level zoning needs to obtain standardized, detailed and comprehensive data of the whole region when performing zoning, but it is difficult to obtain very comprehensive information during actual planning. In addition, the community scoring method itself is not perfect. conducive to practical application

4) The equal-load zoning method of the second-level zoning will increase the scale of the problem when planning a large area. In addition, there are limitations in the optimization of the location of the substation, often because the geographical factors are not considered enough in the optimization process. As a result, the planning results are not suitable, and planning with the goal of load equalization does not meet the actual production needs, often resulting in low utilization of local equipment, which is not conducive to regional load forecasting

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