Power grid planning risk evaluation system and method based on grey correlation degree TOPSIS (Technique for Order Preference by Similarity to an Ideal Solution)

Abstract

The invention discloses a power grid planning risk evaluation system and method based on a grey correlation degree TOPSIS (Technique for Order Preference by Similarity to an Ideal Solution). The power grid program risk evaluation system comprises a power grid planning data acquisition module, a power grid planning scheme input module and a controller, wherein the power grid planning data acquisition module and the power grid planning scheme input module are independently connected with the controller; and the controller comprises a power grid risk evaluation index matrix generation module, a power grid risk evaluation index matrix solving module, a grey correlation degree matrix construction module and a power grid planning scheme risk sorting module. The invention has the beneficial effects that the power grid planning risk evaluation system introduces the controller which can process power grid planning data and sort power planning schemes to carry out optimal sorting on power grid enterprise risk indexes, a power grid planning scheme can be evaluated on the whole, potential risks in a power grid planning process can be effectively prevented and solved, power grid planning operation cost is saved, and power grid reliability is improved.

Description

technical field [0001] The invention relates to the technical field of power grid planning, in particular to a system and method for risk assessment of power grid planning based on the gray relational degree TOPSIS. Background technique [0002] UHV AC transmission and DC transmission are components of the UHV power grid, and their application in the power grid has its own characteristics, and the two complement each other; the development of the power grid cannot rely solely on DC transmission, and it is necessary to build a strong power grid with AC and DC mutual support. Whether the economy of the transmission network is reasonable, whether the security meets the requirements, whether the transmission capacity and grid structure are optimal, etc. are all related to the vital interests of different market players. With the increasing scale of my country's interconnected grid, my country's transmission grid planning is also facing enormous challenges. [0003] The basic re...

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Problems solved by technology

However, gray relational analysis can only measure the correlation between the same factors of each scheme, and compare the correlation degree of each scheme with the same reference sequence according to the closeness between factors.

[0006] (2) The basic idea of ​​the TOPSIS (Technique for Order Preference by Similarity to an Ideal Solution) method is to rank the advantages and disadvantages of each solution based on calculating the distance between the two solutions. However, under the traditional TOPSIS method, if two If the relative closeness of the schemes is equal, they cannot be effectively sorted

[0007] Therefore, relying solely on the above two methods to make optimal decisions for power grid planning schemes cannot accurately and comprehensively evaluate the risks of each planning scheme, and choosing a more economical and reasonable planning scheme among multiple mutually competitive schemes has a great impact on the power grid. The safe operation of the economy is of great significance

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