Insulator metal accessory corrosion charge quantity prediction method

Abstract

The invention discloses an insulator metal accessory corrosion charge quantity prediction method. The method comprises the steps that data is obtained in an on-line monitoring system, the obtained data is subjected to missing value handling and continuous data is obtained; the metal accessory corrosion charge quantity and the characteristic quantity are extracted from the continuous data; the metal accessory corrosion charge quantity and the characteristic quantity are processed by means of the neural network algorithm; the metal accessory corrosion charge quantity is processed by using the time series analysis method; a neural network short-term metal accessory corrosion charge quantity prediction result is compared with a time series short-term metal accessory corrosion charge quantity prediction result, and a short-term metal accessory corrosion charge quantity prediction result is obtained; finally, according to the short-term metal accessory corrosion charge quantity prediction result, the operation status of an insulator is evaluated. According to the annual average metal accessory corrosion charge quantity prediction result, a metal accessory protection device of the insulator is designed, and the problems that the metal accessory protection device is short in service life and wastes materials are solved.

Description

Technical field [0001] The invention relates to the technical field of ultra-high voltage direct current transmission, in particular to a method for predicting the amount of corrosion charge of insulator metal accessories. Background technique [0002] In recent years, my country's HVDC transmission technology has developed rapidly, but it has also brought about some problems. In the technical field involving HVDC insulators, the glass and porcelain insulators on many HVDC transmission lines have suffered large-area corrosion of metal accessories. phenomenon. [0003] The corrosion of insulator metal accessories is mainly divided into two types: steel foot corrosion and iron cap corrosion. The corrosion of the steel feet will directly cause the decrease of the mechanical strength of the insulator. At the same time, the corrosion products will cause a relatively large stress between the steel feet and the cement, which will lead to the damage of the insulator; while the corrosion of...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for predicting the amount of corrosion charge of insulator metal accessories to solve the problems of reduced service life and waste of materials for insulator protection devices

Images