Optimal network reconstruction method and system based on wind power plant

A network reconfiguration and wind farm technology, applied in the field of power systems, can solve problems that will be affected by human subjective factors

Inactive Publication Date: 2021-02-02
JIANGSU ELECTRIC POWER CO
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  • Application Information

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Problems solved by technology

[0014] Liu W, Lin Z, Wen F, et al.Analysis and optimization of the preferences of decision-makers in black-start group decision-making[J].IET Generation,Transmission&Distribution,2013,7(1):14-23.) Rese

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  • Optimal network reconstruction method and system based on wind power plant
  • Optimal network reconstruction method and system based on wind power plant
  • Optimal network reconstruction method and system based on wind power plant

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[0090] In order to make the object, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only some embodiments of the present invention, not all embodiments. Based on the spirit of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0091] Step 1: Use the topology diagram of the power grid to analyze the network structure of the power grid system, as well as the topological relationship of each node and line, and determine the skeleton network based on the network structure and nodes;

[0092] Step 2: After a blackout, the wind farm-based hybrid power supply is used as a black start power supply to power the grid syst...

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Abstract

The invention discloses an optimal network reconstruction method and system based on a wind power plant. The method comprises: analyzing a network structure of a power grid system and a topological relation between each node and a line by utilizing the topological graph of the power grid, and determining a skeleton network by using the network structure and the nodes; after power failure, servinga hybrid power supply based on a wind power plant as a black-start power supply to supply power to the power grid system; calculating a recovery risk index of the skeleton network; calculating line importance of line contraction; optimizing the skeleton network by using a particle swarm algorithm and taking a recovery risk index for minimizing network reconstruction and maximizing the line importance of the skeleton network as optimization objectives; determining the skeleton network by using a network reconstruction method based on the support degree; and starting a black-start power supply according to the skeleton network. Compared with an existing method, the feasibility and superiority of the model and the method of the invention are remarkable through example analysis.

Description

technical field [0001] The invention belongs to the technical field of power systems, and relates to a method and system for optimal network reconfiguration based on wind farms. Background technique [0002] At present, domestic and foreign research work has been done on the restoration of power system after a blackout. [0003] Existing research on system recovery generally only considers the use of conventional hydropower or thermal power units as black-start power sources, while research on renewable energy generators (such as wind turbines) as black-start power sources is rarely reported. In addition, the traditional method requires experts to assign weights to the indicators when selecting the optimal black start strategy, which will inevitably be affected by human subjective factors. [0004] In the prior art, prior art document 1 (Zhang Guosong, Liu Junyong, Wei Zhenbo, et al). Skeleton-network reconfiguration taking into account topology priority and path electrical...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/46G06F30/20
CPCG06F30/20G06F2113/04H02J3/001H02J3/472H02J2203/20Y02E10/76Y02A30/60
Inventor 张璨张华一
Owner JIANGSU ELECTRIC POWER CO
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