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A prediction and early warning method and system for an overhead transmission line galloping risk

A technology for overhead transmission lines and risks, which is applied in the field of prediction and early warning methods and systems for galloping risks of overhead transmission lines, and can solve problems such as large differences in performance of prediction models and complicated training samples

Active Publication Date: 2019-06-28
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +3
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Problems solved by technology

[0005] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a method and system for the prediction and early warning of galloping risks in overhead transmission lines, aiming to solve the problem of power transmission in the prior art. The line galloping model has the problems of complicated training samples and large differences in the performance of the prediction model

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  • A prediction and early warning method and system for an overhead transmission line galloping risk
  • A prediction and early warning method and system for an overhead transmission line galloping risk
  • A prediction and early warning method and system for an overhead transmission line galloping risk

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specific Embodiment 1

[0084] Such as figure 1 As shown, the embodiment of the present invention provides a method for predicting and early warning of galloping risks in overhead transmission lines, including:

[0085] collecting associated parameter data of galloping in the transmission line, wherein the associated parameter data includes ontology data and meteorological data;

[0086] Based on the ontology data and meteorological data, select the target historical data set as a training sample;

[0087] Establish a prediction model, and optimize the number of decision trees of the prediction model and the number of features in the split feature set;

[0088] Based on the screened target historical data set and the optimized prediction model, the galloping risk level of the line to be predicted is determined. For example, galloping risk levels can be set to four levels, and four galloping risk levels of A, B, C, and D are output after the line to be predicted is predicted.

[0089] The embodimen...

specific Embodiment 2

[0157] Such as image 3 As shown, the embodiment of the present invention provides a prediction and early warning system for galloping risks of overhead transmission lines, including:

[0158] A data collection unit 201, configured to collect associated parameter data of transmission line galloping, wherein the associated parameter data includes ontology data and meteorological data;

[0159] The training sample screening unit 202 is used to filter out the target historical data set as a training sample according to ontology data and meteorological data;

[0160] A prediction model optimization unit 203, configured to establish a prediction model, and optimize the number of decision trees of the prediction model and the number of features in the split feature set;

[0161] The galloping risk prediction unit 204 is configured to determine the galloping risk level of the line to be predicted based on the screened target historical data set and the optimized prediction model.

...

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Abstract

The invention discloses a prediction and early warning method and system for an overhead transmission line galloping risk. The system can comprise a data acquisition unit, a training sample screeningunit, a prediction model optimization unit, a galloping risk prediction unit and a galloping risk early warning unit. The method includes: on the basis of collecting ontology data and meteorological data of a power transmission line, firstly inputting original sample data into a training sample screening unit, and selecting a historical data sample set similar to a to-be-predicted historical datasample set based on a weighted grey correlation projection method; Secondly, training a dancing risk prediction model through the similar historical data sample set, and selecting the optimal decisiontree number of the model and the feature number of the split feature set to complete the establishment of the dancing risk prediction model; Then, outputting a galloping risk prediction level at a galloping risk prediction unit; And finally, based on the galloping risk prediction level, releasing corresponding galloping risk early warning information in a galloping risk early warning unit.

Description

technical field [0001] The invention relates to the technical field of fault risk prediction and early warning of overhead transmission lines in electric power systems, in particular to a method and system for prediction and early warning of galloping risks of overhead transmission lines. Background technique [0002] Galloping is one of the "six defenses" of transmission lines. Its destructive energy is huge and lasts for a long time. It is easy to cause mechanical damage and electrical failure to the line, which seriously threatens the safe operation of the transmission line. In recent years, with the frequent occurrence of severe freezing weather, the frequency and degree of harm of galloping accidents on transmission lines have increased significantly, accompanied by large-scale galloping areas and diversified galloping terrains. Therefore, it has important theoretical significance and engineering practical value to carry out risk early warning research on galloping of t...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06
Inventor 李清杨晓辉赵书杰卢明李黎吕中宾张博王广周王吉杨威李哲刘善峰梁允吴明孝李雪桓林荔
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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