Residual life prediction of marine EPR cable under discontinuous operation

Autor: Li Cai, Jingdong Lin, Xiaoyong Liao
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: IET Generation, Transmission & Distribution, Vol 14, Iss 25, Pp 6306-6311 (2020)
Druh dokumentu: article
ISSN: 1751-8695
1751-8687
DOI: 10.1049/iet-gtd.2020.1294
Popis: It is known that marine cable is responsible for the transmission of electric energy and electrical signals of the ship. In order to predict the residual life of cable under discontinuous operation, a non‐destructive online life prediction model is established based on retention rate of hardness (RRH). This study takes the marine ethylene propylene rubber (EPR) cable as the research object. Using time temperature superposition principle, the optimal time temperature shift factor is calculated using particle swarm optimisation and steepest descent method. After that the main curve was fitted exponentially to acquire the relationship between RRH and ageing time. Compared with the existing model, the results indicate that the proposed model has higher prediction accuracy. On this basis, the residual life prediction model based on RRH of marine EPR under discontinuous operation is presented by adding time parameters. The effectiveness of the method is verified by simulation. Thus, it provides theoretical guidance for solving the problem of marine cable replacement time.
Databáze: Directory of Open Access Journals