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Open AccessArticle

Research on Lifespan Prediction of Composite Insulators in a High Altitude Area Experimental Station

1
State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Shapingba District, Chongqing 400044, China
2
Nanjing Institute of Technology, Nanjing 210000, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(16), 3364; https://doi.org/10.3390/app9163364
Received: 3 August 2019 / Revised: 11 August 2019 / Accepted: 12 August 2019 / Published: 15 August 2019
(This article belongs to the Section Electrical, Electronics and Communications Engineering)
In this paper, composite insulators of the same batch from Factory A, aged for 1–12 years in a high altitude area experimental station of Hunan province, were sampled. In order to investigate the changing law of lifespan prediction parameters with aging time, widely accepted testing methods, such as the static contact angle (CA) and hardness, were employed for composite insulators in accordance with previous research. Based on test results, lifespan prediction parameters were concluded and some parameters significantly correlated with aging time were filtered by means of correlation calculation. On this basis, a prediction method which can be used to determine the aging time of composite insulators was proposed based on a back propagation (BP) neural network. Test results indicate that parameters, including the static contact angle (θav), the relative content of Si (XSi) and O (XO) elements, and salt-fog flashover voltage (Uf), have significant correlation with aging time, and that these parameters can be used to evaluate the aging degree of composite insulators. In addition, due to the high accuracy in experimental verification, the method proposed in this paper can be used to predict the aging time of composite insulators from Factory A in high altitude areas in future research. View Full-Text
Keywords: composite insulator; high altitude area; lifespan prediction parameters; prediction method composite insulator; high altitude area; lifespan prediction parameters; prediction method
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MDPI and ACS Style

Zhang, Y.; Zhang, Z.; Jiang, X.; Liang, T.; Zhang, D. Research on Lifespan Prediction of Composite Insulators in a High Altitude Area Experimental Station. Appl. Sci. 2019, 9, 3364.

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