Partial Discharge Experimental Study for Medium Voltage DC Cables

Feng, Xianyong; Xiong, Qing; Gattozzi, Angelo L.; Hebner, Robert E.

doi:10.1109/tpwrd.2020.3002508

Cited by 15 publications

(16 citation statements)

References 19 publications

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“…Experiments show that the PD repetition rate under DC is much lower than that under AC. An analytical model for this explanation can be found in [145,146] based on the abc-model while a qualitative description is available in [143]. Research also confirmed that the PDIV in DC can be much higher than in AC for the same defect at room temperature.…”

Section: Pd Under Ac and DCmentioning

confidence: 84%

“…PD tends to increase as the cable load increases. A recent test shows that with the temperature increase, PDIV may decrease slightly for XLPE and EPR [143].…”

Section: Pd With Temperature and Loadmentioning

confidence: 99%

“…Research also confirmed that the PDIV in DC can be much higher than in AC for the same defect at room temperature. However, the PDIV in DC can become lower than that in AC for higher temperature, at least for the typical XLPE materials used from cables [143,147]. The reason is that temperature rise can increase the dielectric conductivity significantly [143].…”

Section: Pd Under Ac and DCmentioning

confidence: 99%

“…However, the PDIV in DC can become lower than that in AC for higher temperature, at least for the typical XLPE materials used from cables [143,147]. The reason is that temperature rise can increase the dielectric conductivity significantly [143]. Regarding the PD magnitude, its value under AC is higher than under DC.…”

Section: Pd Under Ac and DCmentioning

confidence: 99%

“…Regarding the PD magnitude, its value under AC is higher than under DC. The reason is considered to be the statistical time delay for the firing electron [143,145]. Taking the PD in cavity as an example, the PD will occur after a statistical time delay when the electric field exceeds the PDIV.…”

Section: Pd Under Ac and DCmentioning

confidence: 99%

See 4 more Smart Citations

Review on Detection and Analysis of Partial Discharge along Power Cables

Zhang

Pang

Liu³

et al. 2021

Energies

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Partial discharge (PD) detection and analysis plays a crucial role for acceptance testing and condition monitoring of power cables. Various aspects are related to PD in power cables from theory to practice. This paper first summarizes the PD mechanism and models used for PD analysis in power cables. Afterwards, PD detection is addressed in the aspects of off-line test, on-line test, and sensors. PD analysis is discussed in detail. Specifically, related quantities and algorithms for PD analysis are outlined. PD characteristics with affecting factors, e.g., dielectric type, load, and applied voltage are discussed. Experience on PD development trend with measurements in field is analyzed. Based on the comprehensive review, challenges of PD detection and analysis along a power cable are proposed.

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Section: Pd Under Ac and DCmentioning

confidence: 84%

“…PD tends to increase as the cable load increases. A recent test shows that with the temperature increase, PDIV may decrease slightly for XLPE and EPR [143].…”

Section: Pd With Temperature and Loadmentioning

confidence: 99%

Section: Pd Under Ac and DCmentioning

confidence: 99%

Section: Pd Under Ac and DCmentioning

confidence: 99%

Section: Pd Under Ac and DCmentioning

confidence: 99%

See 3 more Smart Citations

Review on Detection and Analysis of Partial Discharge along Power Cables

Zhang

Pang

Liu³

et al. 2021

Energies

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show abstract

Ferroelectric Materials for Dielectric Energy Storage: Fundamentals and Applications

Zhang,

Tan,

Huang

et al. 2024

Piezoelectric Materials

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FEA-Based Simulation of Accelerated Ageing in a Power Cable Due to Sustained Partial Discharge Activities in a Spherical Cavity

et al. 2023

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The reliability of electrical assets is greatly influenced by the quality of their insulations. Key power installations such as power cables are manufactured with polymer-based materials as part of their insulation system. However, accelerated ageing of equipment insulations due to manifestation of defect(s), and partial discharges (PDs) can offset the operation of these systems or even lead to breakdowns. In this study, a non-deterministic model to simulate the phenomenon of repetitive discharges in a spherical air-filled cavity within a practical power cable has been investigated. In addition, the work contributes to the understanding of PD behaviour and field distribution under different ageing conditions considering changes in cavity surface conductivity. First, a section of the practical XLPE cable containing the cavity is developed in 2D using COMSOL software, and a finite element analysis (FEA) of the electric field distribution within the cable insulation is performed. The magnitude of the cavity local field, that is enough to ignite a PD, is investigated. Alongside the COMSOL model, the activity of sustained internal PD is simulated in MATLAB by introducing a random sample generating factor and adjusting the model’s parameters to obtain something close to the practical results. Furthermore, the impact of continuous PD in the power cable under different cavity dimensions and surface conductivity is likewise investigated, and a phase resolved PD (PRPD) pattern is established. The result shows that the magnitude and number of PDs per cycle increase as the cavity size and its surface conductivity increase. Finally, when the cavity surface conductivity rises, the amplitude of the electric field generated by the surface charge distribution and the number of PDs per cycle approach their maximum values.

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Partial Discharge Experimental Study for Medium Voltage DC Cables

Cited by 15 publications

References 19 publications

Review on Detection and Analysis of Partial Discharge along Power Cables

Review on Detection and Analysis of Partial Discharge along Power Cables

Ferroelectric Materials for Dielectric Energy Storage: Fundamentals and Applications

FEA-Based Simulation of Accelerated Ageing in a Power Cable Due to Sustained Partial Discharge Activities in a Spherical Cavity

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