Transformer station power supply range optimization method suitable for seasonal changes of loads

A technology of power supply range and optimization method, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems of low investment benefit, large load peak-valley difference, and substation heavy load contradiction, and achieve simple operation and maintenance and small investment Effect

CN106953323AActive Publication Date: 2017-07-14国网江西省电力有限公司经济技术研究院 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-07-14

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Abstract

The invention discloses a transformer station power supply range optimization method suitable for seasonal changes of loads, and the method enables the positions of transformers to serve as discrete cell points, and a Voronoi spatial pattern is generated through a simulation cell growth method. Moreover, transformer load level multi-load scene security constraint check is added in a growing process of each cell, and the method avoids the overloading caused by a condition that a transformer station cannot adapt to the seasonal changes of loads while reducing the largest power supply range and reducing the network loss and voltage drop loss. The method comprises the following steps: (1), simulating the growth of cells; (2), carrying out the multi-load scene security constraint check; (3), arranging a power supply range. The method guarantees that the transformer station is not overloaded during Spring Festival through the setting of the growing speed of the cells and the multi-load scene security constraint check mechanism while the power supply load moment of the transformer station is reduced as much as possible at ordinary time. The method is small in investment, is simple in operation and maintenance, is stable in supply region, and is suitable for all urban and rural regions.
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Description

technical field

[0001] The invention relates to a method for optimizing the power supply range of a substation adapting to seasonal load changes, and belongs to the technical field of substation power supply. Background technique

[0002] There are many mountainous lakes in rural areas, scattered residents, long power supply distances for rural power grids, high tortuous paths, and severe low voltage problems in remote areas. In addition, due to the custom of returning home during the Spring Festival, the peak-to-valley load difference in rural areas is large, resulting in more prominent contradictions between light loads in substations and heavy loads during the Spring Festival. At present, my country is in a period of rapid development of new urbanization construction, and the living standards of residents have been greatly improved. The main contradiction is the higher requirements of users for power supply capacity and voltage quality of the power grid, and the high cost...

Examples

Embodiment Construction

[0020] The specific embodiment of the present invention is as figure 2 shown. The present invention is specifically implemented as follows:

[0021] (1) Simulated cell growth method

[0022] The V-map is generated from the perspective of simulating the natural growth of cells. Each discrete point is used as the cell nucleus and expanded outward in a circle to form an expanded circle of the discrete point. The line connecting the intersection of two adjacent expanded circles is the "growth boundary", which is the segmentation boundary of the V diagram.

[0023] The shortest distance between the points in the Voronoi segmentation diagram and the corresponding discrete points has great similarity with the power supply area division, which can reflect the scope of the substation located in the load center and its spatial influence. Therefore, the center of the substation location can be the point coordinate of the nucleus, and the Voronoi diagram cell growth method can be used...