Next Article in Journal
Microalgal Systems for Wastewater Treatment: Technological Trends and Challenges towards Waste Recovery
Previous Article in Journal
Modeling the Business Environment of an Energy Holding in the Formation of a Financial Strategy
Article

Lifetime Estimation Based Health Index and Conditional Factor for Underground Cable System

1
Electrical and Computer Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut’s University of Technology, Bangkok 10800, Thailand
2
Department of Electrical and Computer Engineering, Faculty of Engineering, King Mongkut’s University of Technology, Bangkok 10800, Thailand
*
Author to whom correspondence should be addressed.
Academic Editor: Daniel-Ioan Stroe
Energies 2021, 14(23), 8113; https://doi.org/10.3390/en14238113
Received: 8 November 2021 / Revised: 24 November 2021 / Accepted: 30 November 2021 / Published: 3 December 2021
In this paper, a lifetime estimation method for underground cable systems is proposed by combining a health index (HI) and conditional factor (CF). The underground cable system consists of underground cable, joint, termination, manhole, and duct bank. The HI is an indicator to indicate the actual condition of underground cable components and systems whereas the CF is used to indicate different operating stresses of the system under different operating conditions such as percentage loading, electrical stresses, laying structure, environment, etc. The actual technical data as well as historical operating and testing records are applied. The weighting and scoring method with the analytical hierarchy process are used to classify an importance of underground cable components, testing methods, and criteria used in the HI and CF calculation. The annual calculated HIs are plotted to investigate the lifetime trending curve by using a polynomial function. The degradation curve based on calculated CF is estimated by using the Weibull distribution function. Finally, the remaining life of the underground cable system is determined by matching the lifetime trending curve with the degradation curve. Ten practical underground cable systems supplying power in a high voltage power delivery system are evaluated with effective results. The lifetime of the underground cable system can be successfully estimated. View Full-Text
Keywords: underground cable; lifetime estimation; health index; conditional factor; Weibull distribution; polynomial function underground cable; lifetime estimation; health index; conditional factor; Weibull distribution; polynomial function
Show Figures

Figure 1

MDPI and ACS Style

Somsak, T.; Suwanasri, T.; Suwanasri, C. Lifetime Estimation Based Health Index and Conditional Factor for Underground Cable System. Energies 2021, 14, 8113. https://doi.org/10.3390/en14238113

AMA Style

Somsak T, Suwanasri T, Suwanasri C. Lifetime Estimation Based Health Index and Conditional Factor for Underground Cable System. Energies. 2021; 14(23):8113. https://doi.org/10.3390/en14238113

Chicago/Turabian Style

Somsak, Tanachai, Thanapong Suwanasri, and Cattareeya Suwanasri. 2021. "Lifetime Estimation Based Health Index and Conditional Factor for Underground Cable System" Energies 14, no. 23: 8113. https://doi.org/10.3390/en14238113

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop