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

Somsak, Tanachai; Suwanasri, Thanapong; Suwanasri, Cattareeya

doi:10.3390/en14238113

Cited by 4 publications

(1 citation statement)

References 27 publications

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“…As the importance of XLPE cables for transmission and distribution grows, active research is being pursued to dielectric diagnose and estimate their lifespan. In particular, research is underway to develop lifespan estimation models, such as the Health Index, aimed at quantitatively assessing the remaining lifespan of cables [5,6]. While significant progress has been made in the research of transmission cables, studies on distribution cables face challenges due to the lack of data related to their operational history [7].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Deterioration Characteristics of Service Aged XLPE Cables according to Installation Location of Combined Heat and Power Plant

Kim,

Jung,

Lee

2024

Preprint

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The number of XLPE cables being used near or beyond their designed lifespan is increasing. The importance of timely cable replacement is increasing. Therefore, research is actively being conducted using VLF Tan δ diagnostic technology to assess the insulation condition of cables. There is a lack of studies measuring and analyzing VLF Tan δ of service aged XLPE cables. Additionally, there is a lack of research considering the operating environment. Therefore, research is needed to diagnose and analyze the insulation condition of the same serviced aged cable when it is operated in a different environment. This paper evaluates and analyzes the insulation condition of cables installed in the BFP, cooling tower, and deaerator booster pump of a combined heat and power plant. Each cable was analyzed by measuring VLF Tan δ, dielectric breakdown test of the cable, and tensile strength, elongation at break, crystallinity, and dielectric strength of XLPE specimens. Additionally, the correlation between VLF Tan δ and other characteristics was also analyzed. It was found that degradation progressed in the order of BFP, cooling tower, and deaerator booster pump. Therefore, it was confirmed that even for the same cable, deterioration varies depending on the installation location.

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Section: Introductionmentioning

confidence: 99%

Analysis of Deterioration Characteristics of Service Aged XLPE Cables according to Installation Location of Combined Heat and Power Plant

Kim,

Jung,

Lee

2024

Preprint

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Comparison for Accelerated Degradation of New and Old 6.6 kV AC XLPE Cables

Song,

Kim,

Jung

et al. 2024

J. Electr. Eng. Technol.

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Remaining Useful Life Estimation for Underground Cable Systems Based on Historical Health Index

Somsak

Suwanasri

2022

Energies

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In this paper, a modeling method for estimating the remaining useful life (RUL) of aged underground cable systems is proposed that uses statistical health index (HI) and operating factor (OF) data of retired systems. The HI is an indicator which identifies the condition of an underground cable system and its components and is calculated from testing and inspection results. The OF takes actual operating conditions and technical data from the system into consideration. Both factors are then combined to determine the overall health index (OHI) of each system. For RUL estimation of underground cable systems, normal distribution and Weibull distribution analyses are first applied to determine a health index curve and an aging line. The relationship between these two curves gives an estimate of the system’s apparent age. The RUL of the system is then calculated in terms of the difference between its apparent age and its actual chronological age. In this study, thirteen retired systems and ten operating systems were evaluated and analyzed, and accurate results were obtained. Using the methods described here, the apparent age and the RUL of underground cable systems can be accurately estimated. Finally, a maintenance strategy for underground cable systems is recommended, which promises more efficient maintenance and greater cost-effectiveness in the management of underground cable systems.

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

Cited by 4 publications

References 27 publications

Analysis of Deterioration Characteristics of Service Aged XLPE Cables according to Installation Location of Combined Heat and Power Plant

Analysis of Deterioration Characteristics of Service Aged XLPE Cables according to Installation Location of Combined Heat and Power Plant

Comparison for Accelerated Degradation of New and Old 6.6 kV AC XLPE Cables

Remaining Useful Life Estimation for Underground Cable Systems Based on Historical Health Index

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