Prediction of CO2 Corrosion Rate of Production Casing Considering Annulus Pressure
The aging of composite insulators can cause problems such as reduced surface hydrophobicity,seriously endangering the reliability of external insulation in transmission and distribution lines;In the face of the prominent aging problem of composite insulators in special environments,a classification review was conducted from the characteristics of aging in special environments,aging detection methods,and key research directions.Firstly,the advances of aging characteristics of composite insulators using in special environments are mainly discusses.The aging problem is very prominent in special environments such as hot and humid,salt fog,acid and strong radiation environments,and attention should be paid to improving the anti-aging performance of silicone rubber materials in special environments.Secondly,the current aging detection methods for composite insulators are introduced,which can be divided into two categories from a technical perspective:non-contact characterization and sample collection laboratory characterization.Considering the needs of online monitoring and the hydrophobicity recovery of composite insulators,the contactless aging characterizing method is proposed as the preferred method for evaluating the aging of composite insulators.Finally,based on the review results,key research directions for the future are proposed using tropical marine environments as an example,providing some reference for scholars in the field.
special environmentcomposite insulatorsaging characteristicsdetection methodonline monitoringtropical oceans
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