Prediction method of corrosion rate grade of grounding grid

Abstract

The invention discloses a grounding grid corrosion rate level prediction method which comprises the following steps: (1) inputting training sample data; (2) randomly sampling training samples according to a bootstrap sampling principle in a Bagging algorithm, forming training sample bootstrap subsets with the number of M, and constituting training sample bootstrap subset data sets; (3) structuring a weak classifier model according to a k-nearest neighbor (KNN) algorithm, sequentially training the training sample bootstrap subsets with the number of M, and obtaining weak classifiers with the number of M; (4) structuring a strong classifier model according to an Adaboost algorithm; (5) inputting to-be-tested sample data, predicting a grounding grid corrosion rate level, obtaining a predicting result, and displaying the predicting result through a displayer. The grounding grid corrosion rate level prediction method has the advantages of being novel and reasonable in design, convenient and fast to use and operate, high in predicting precision, capable of achieving an accurate prediction to the grounding grid corrosion rate level by means of a small amount of data samples which are measured in the prior art, low in implementation cost, strong in practicability and high in value of popularization and application.

Description

technical field [0001] The invention relates to the technical field of corrosion and protection of grounding grids, in particular to a method for predicting the corrosion rate level of grounding grids. Background technique [0002] The substation grounding grid is an important measure to ensure the reliable operation of the power system and the safety of operating personnel, and its reliability is related to the normal operation of the power grid. The development of electric power also puts forward higher requirements for the safety and reliability of the grounding grid. The existing grounding grids in our country are corroded and damaged quickly, and the transformation is frequent. Copper is mostly used in developed countries and grounding grids designed with advanced standards. However, due to the high cost and lack of resources, it will be difficult for our country to fully carry out the transformation of "copper grid" for a long time. There is still a lack of technica...

AI Technical Summary

Problems solved by technology

However, in the research of grounding grid corrosion, the theoretical system for studying the influence of natural environment on material corrosion behavior and its laws is not perfect, and there are few basic data available for research.

However, in the conventional parameter learning method, the internal correlation of samples is unknown, which may cause wrong assumption analysis.

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