Analyzing the Effect of Thermal Stress on Dielectric Parameters of PVC Insulated Low Voltage Cable Sample

Bal, Semih; Tamus, Zoltán Ádám

doi:10.1109/cando-epe57516.2022.10046360

Cited by 1 publication

(2 citation statements)

References 19 publications

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“…The detailed analysis of short-term cyclic thermal aging in each cable type individually has been published elsewhere [38,46,48]. Additionally, similar findings can be observed in another independent study conducted by a different laboratory, which utilized similar techniques such as tan δ, Shore D, and EVR.…”

Section: Correlation Between Electrical and Mechanical Quantitiessupporting

confidence: 59%

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A Method for Assessing the Degradation of PVC-Insulated Low-Voltage Distribution Cables Exposed to Short-Term Cyclic Aging

Bal,

Tamus

2024

Electronics

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The distribution grid comprises cables with diverse constructions. The insulating material used in low-voltage (LV) distribution cables is predominantly PVC. Furthermore, the presence of cables with different structures in the grid poses challenges in detecting the aging of the cable network. Finding a universal and dependable condition-monitoring technique that can be applied to various types of cables is indeed a challenge. The diverse construction and materials used in different cables make it difficult to identify a single monitoring approach that can effectively assess the condition of all cables. To address this issue, this study aims to compare the thermal aging behavior of different LV distribution cables with various structures, i.e., one cable contains a PVC belting layer, while the other contains filler material. The growing adoption of distributed generation sources, electric vehicles, and new consumer appliances in low-voltage distribution grids can lead to short, repetitive overloads on the low-voltage cable network. Hence, these cable samples were exposed to short-term cyclic accelerated aging in the climate chamber at 110 °C. The cable’s overall behavior under thermal stress was evaluated through frequency and time domain electrical measurements (including tan δ and extended voltage response) and a mechanical measurement (Shore D). The tan δ was measured in the frequency range of 20 Hz–500 kHz by using the Wayne-Kerr impedance analyzer. The extended voltage response measurement was conducted using a C# application developed in-house specifically for laboratory measurements in the .NET environment. The study observed a strong correlation between the different measurement methods used, indicating that electrical methods have the potential to be adopted as a non-destructive condition-monitoring technique.

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Section: Correlation Between Electrical and Mechanical Quantitiessupporting

confidence: 59%

“…The VR and EVR timing diagrams can be seen in Figure 5. The usefulness of the EVR measurement on LV PVC-insulated multicore cables has been shown in various publications in the literature [38,[46][47][48].…”

Section: • Extended Voltage Response (Evr)mentioning

confidence: 99%