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Parameter optimization method based on power transmission line state estimation

A state estimation, transmission line technology, applied in design optimization/simulation, electrical digital data processing, calculation, etc., can solve problems such as insufficient balance of local and global search capabilities, difficulty in traversing search nodes, and impact on convergence capabilities

Inactive Publication Date: 2020-06-02
NORTHEAST DIANLI UNIVERSITY +3
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem of insufficient balance of local and global search capabilities in traditional swarm intelligence parameter optimization methods, especially when the search space range is relatively large and it is difficult to traverse the search nodes, its convergence ability will be affected

Method used

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  • Parameter optimization method based on power transmission line state estimation
  • Parameter optimization method based on power transmission line state estimation
  • Parameter optimization method based on power transmission line state estimation

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Embodiment Construction

[0036] The present invention will be further described below using the drawings and specific embodiments.

[0037] A kind of parameter optimization method based on transmission line state estimation of the present invention, comprises content to have:

[0038] 1. Basic particle swarm parameter optimization

[0039] Particle Swarm Optimization (PSO) simulates the flight activities of bird groups in the parameter optimization process, regards its flight space as a search space, and uses a particle to abstractly represent the individual of each bird, each particle is a candidate solution. The problem of finding food for a bird group is simulated as a search space, and each particle constantly updates its flight speed and direction during the foraging process, so as to search for the optimal solution in the particle swarm.

[0040] In the process of solving the particle swarm optimization problem, a bird in the search D-dimensional space is abstracted as a particle. The positio...

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Abstract

The invention discloses a parameter optimization method based on power transmission line state estimation. The device is characterized by comprising a base, the method comprises the steps of basic particle swarm parameter optimization, weight coefficient optimization, learning factor optimization, power transmission line state estimation parameter optimization and the like. According to the method, a traditional swarm intelligence parameter optimization method can be overcome; the problem of insufficient local and global search capability balance is solved; particularly, when the search spacerange is relatively large and the search nodes are difficult to traverse, the global and local search capabilities of the balance algorithm are optimized by adopting the nonlinear weight coefficient and the learning factor collaboratively, and the global optimal solution is quickly converged in the evolution process, so that the optimal state estimation parameter is determined, and the state estimation accuracy is improved. The method is scientific and reasonable, and can be suitable for parameter optimization of various state estimations.

Description

technical field [0001] The invention relates to the technical field of power grid transmission line state estimation and parameter optimization, and relates to a parameter optimization method based on power transmission line state estimation. Background technique [0002] With the increasing physical complexity of the existing power grid, the safe and stable operation of the power grid is facing severe challenges. At the same time, dispatching and operating personnel's grasp of the characteristics of the power grid also strongly depends on the real-time monitoring and intelligent analysis of the power grid model. Accurate grid parameters are the basis for power system calculations such as grid modeling, state estimation, and power flow calculations. The grid component parameters and telemetry data are collectively referred to as the basic data of the grid. The transmission line parameters are one of the basic parameters of the grid components, including resistance, suscepta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27G06N3/00G06F113/16
CPCG06N3/006
Inventor 姜涛曹杰王蕾薄小永曲朝阳刘世民薛凯吕洪波胡可为于建友徐鹏程郭善成
Owner NORTHEAST DIANLI UNIVERSITY
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