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- W3111800957 abstract "In the High Voltage Direct Current (HVDC) power transmission project, partial discharge (PD) inside the electrical equipment often leads to aging and even breakdown of insulation, which brings serious harm to electrical equipment. Therefore, it is necessary to study the PD mechanism of oil-pressboard insulation under direct current (DC) voltage. In this paper, parallel liquid immersed dielectric (LID) model with needle-plate electrodes is established as an example to explain the morphological change of streamer by studying the distribution of electric field and space charge in the oil gap. Then, change the voltage of needle electrode and record the distance between the head of streamer and the tip of needle electrode to discuss the relationship between the average speed of the streamer and the voltage of needle electrode. Finally, the influence of surface charge density on the minimum breakdown voltage and breakdown time of streamer is analyzed by setting different surface charge density of the pressboard. The experimental data and results from software simulation can provide a new theoretical support for the state diagnosis and improved optimization of oil-paper insulation structure in the future." @default.
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- W3111800957 date "2020-09-06" @default.
- W3111800957 modified "2023-09-26" @default.
- W3111800957 title "Simulation of Partial Discharge of Oil-pressboard insulation with Needle-plate Model under Positive DC Voltage" @default.
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- W3111800957 doi "https://doi.org/10.1109/ichve49031.2020.9279480" @default.
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