Influence of frequency on the surface discharge characteristics of PEEK under positive repetitive square voltage
Zhuodong Yang,Li Xuebao,Xiangrui Meng,Zhibin Zhao,Pengyu Fu,Bin Zhai,Cui Xiang +6 more
- Vol. 5, Iss: 6, pp 669-678
TLDR
In this paper, the surface discharge current pulses of polyetheretherketone (PEEK) material under positive repetitive square voltage in a nitrogen atmosphere were measured, and the influences of different voltage amplitudes and frequencies on the detail parameters of forward discharge and backward discharge current was statistically analyzed.Abstract:
In this study, the surface discharge current pulses of polyetheretherketone (PEEK) material under positive repetitive square voltage in a nitrogen atmosphere are measured. The influences of different voltage amplitudes and frequencies on the detail parameters of forward discharge and backward discharge current pulses are statistically analysed. The results show that as the square voltage amplitude increases, the current pulse amplitude, fall time and pulse width of both forward and backward discharge current increase, and the rise time does not change significantly. As the voltage frequency increases, current pulse amplitude, fall time and pulse width of both forward and backward discharge current decrease, and the rise time does not change significantly. Due to the independence of the discharge at different repetitive cycles, the specific discharge process in one cycle is analysed in detail to explain the influence mechanism of the voltage amplitude and frequency on the discharge current. By mean of the Richardson–Schottky and the Cavallini relaxation model, the relationship between discharge voltage ratio and surface charge, and the decay process of surface discharge are analysed. Furthermore, the influences of amplitude and frequency of the positive repetitive square voltage on the PEEK surface current pulses are explained qualitatively.read more
Citations
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Influence of N2 pressure on surface discharge characteristics of PEEK under positive repetitive square voltage
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Insulation degradation affected by micron metal particles attached on epoxy surface: charge accumulation and flashover voltage
TL;DR: In this article , the surface charge accumulation and flashover voltage of epoxy itself before and after discharge degradation by particles were compared, and the effect of micron metal particles on insulation degradation in SF6 gas insulated equipment.
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Streamer-to-precursor transition in N2–SF6 mixtures under positive repetitive submicrosecond pulses
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Transient electric field of the combined insulation structure under positive periodic square waveform voltage: Analytical analysis and application
TL;DR: In this paper , the transient characteristics of the electric field for composite insulation structure under the positive periodic square waveform (PPSW) voltage were analyzed for high-voltage high-power electronic devices.
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Effect of Different DC Prestressed Time on Flashover Characteristics of Epoxy Resin Under Polarity Reversal Voltage
Bo Qi,Zhuodong Yang,Xiao-xiong Yang,Chunjia Gao,Licheng Lu,Yi Zhang,Lei Li,Caixin Sun,Chengrong Li +8 more
TL;DR: In this article , the flashover characteristics of epoxy samples in SF6 gas under polarity reversal conditions with dc voltage prestressed for 10-600 min were measured in a HVDC transmission project.
References
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