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Mixed integer programming method considering N-1 security constraints for bottom-preserving net rack

A mixed integer programming, security constraint technology, applied in the direction of AC network voltage adjustment, AC network with the same frequency with different sources, complex mathematical operations, etc. , the effect of strong robustness and high computational efficiency

Active Publication Date: 2020-12-18
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention mainly solves the problem that the intelligent optimization algorithm in the prior art has poor robustness, and the probability of obtaining the global optimal solution is low; it provides a mixed-integer programming method for a bottom-guaranteed grid considering N-1 security constraints, and the algorithm is mature and robust Good stickiness

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  • Mixed integer programming method considering N-1 security constraints for bottom-preserving net rack
  • Mixed integer programming method considering N-1 security constraints for bottom-preserving net rack
  • Mixed integer programming method considering N-1 security constraints for bottom-preserving net rack

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Embodiment

[0069] In this embodiment, a mixed integer programming method considering the N-1 safety constraints of the bottom-guaranteed grid, such as figure 1 shown, including the following steps:

[0070] S1: Collect grid data and build a complete grid model based on the grid data.

[0071] In this embodiment, as figure 2 The IEEE5 node system is shown as an example.

[0072] S11: Distinguish the grid area to be searched from other grid areas, and reorder the nodes and lines.

[0073] S12: Collect data, including line data, substation data, transformer data, power plant data, tie line data, line reinforcement cost data, substation maintenance cost data and power plant operating cost data.

[0074] S13: data sorting, sorting the data collected in step S12 into the data of node load power, power plant output power, line capacity, generator capacity, node load of the required bottom-guaranteed grid, important lines and important power plants.

[0075] If there is switching power in ...

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Abstract

The invention discloses a mixed integer programming method considering N-1 security constraints for a bottom-preserving net rack. In order to overcome the problems of poor robustness and low probability of obtaining a globally optimal solution of an intelligent optimization algorithm in the prior art, the method comprises the following steps of S1 collecting net rack data, and constructing a complete net rack model according to the net rack data; S2 constructing a bottom-preserving net rack mixed integer programming model considering N-1 security constraints, and establishing an objective function and model constraints; S3 solving the model, and processing the solved model to enable the model to become a complete net rack; and S4 carrying out rationality verification on the solved net rackmodel through load flow calculation and N-1 safety and stability check. According to the scheme, the mixed integer programming model is adopted to describe the bottom-preserving net rack, constraintsare all analytic mathematical expressions, expression is rigorous, solving can be conducted by means of a mature algorithm, robustness is high, calculation efficiency is high, and the influence of result uncertainty on application of the bottom-preserving net rack is reduced.

Description

technical field [0001] The invention relates to the field of floor-guaranteed grid planning, in particular to a mixed-integer programming method for floor-guaranteed grids considering N-1 safety constraints. Background technique [0002] Guaranteeing the power grid not only requires the power grid to have a strong ability to resist natural disasters, but also emphasizes that when faced with different levels of natural disasters and different scales of the guarantee range, the ability to flexibly use the disaster resistance of transmission lines can ensure that the power grid can meet the most basic operation requirements. Safe operation under regular conditions. The research on the bottom-guaranteed grid is of great significance to strengthen the construction of power grid structure and improve the ability of power grid to resist natural disasters at present and in the future. At present, the main method of researching the guaranteed bottom grid is to use scientific methods...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/06H02J3/14H02H7/26G06F17/11
CPCH02J3/00H02J3/06H02J3/144H02H7/26G06F17/11H02J2203/10H02J2203/20Y02B70/3225Y04S20/222Y04S10/50
Inventor 李佩杰何远健郝志方徐莉菲李滨韦化陈碧云祝云白晓清
Owner GUANGXI UNIV