A Database Based on the Prediction System of Corrosion Charge of Insulator Metal Attachments

Abstract

The invention discloses a database based on a system for predicting corrosive charge quantity of an insulator metal attachment. The database includes the system for predicting the corrosive charge quantity of the insulator metal attachment, and the system comprises a historical data entry module, a data preprocessing module, a feature extraction module, a neural network learning and training module, an external environment input module, a neural network prediction module and a time sequence analysis module. Neural network prediction and time sequence analysis prediction are conducted on historical test data after pre-processing and feature extraction respectively, and first short-time corrosive charge quantity prediction data, annual average corrosive charge quantity prediction data of future several years and a second short-time corrosive charge quantity prediction data are obtained. The annual average corrosive charge quantity prediction data can guide design of a protection device for the insulator metal attachment; through the comparison of the first short-time corrosive charge quantity prediction data and the second short-time corrosive charge quantity prediction data, the prediction accuracy can be improved, the operation state of insulators can be evaluated, and the stable operation of a power grid is ensured.

Description

technical field [0001] The invention relates to the technical field of data prediction algorithm theory and processing system, in particular to a database based on a corrosion charge prediction system for metal accessories of insulators. Background technique [0002] In transmission lines, insulator strings are used to connect overhead transmission lines and iron towers and provide insulation between them. In HVDC transmission system, insulators generate leakage current under the action of DC voltage, and the direction of leakage current is constant. In a humid and dirty environment, the dirty liquid produced by the moisture of the dirt flows over the surface of the metal accessories of the insulator, and under the action of the leakage current, it will react with the metal accessories, causing chemical and electrolytic corrosion, which will endanger the safety and stability of the grid line in severe cases run. [0003] The existing on-line monitoring system for the corro...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a database based on the prediction system for the corrosion charge of insulator metal accessories to solve the problem that the prior art cannot predict the corrosion charge of insulator metal accessories

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