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- W4224227800 abstract "Polarity reversal, one of the operating conditions for a cable, is carried out to reverse power flow. The transient electric field occurred during the polarity reversal process results in intense strain on the cable insulation. Due to the material properties of extruded polymer cable, space charge accumulation within the insulation is especially prominent, which further intensifies the transient electric field. Since space charge accumulation is a major issue in terms of insulation of DC cables, research using a numerical analysis model called Bipolar Charge Transport (BCT) that can describe space charge behavior is being conducted. However, most studies have considered only unidirectional electric fields, and few studies have simulated transient states such as polarity reversal. Therefore, in this paper, the space charge behavior and electric field characteristics of cylindrical polymeric insulation were analyzed using modified model. The temperature condition was applied using the Joule heat by load current, and the voltage drop rate was set differently. From the simulation results, a homocharge distribution was formed inside the insulator while a positive DC voltage was applied. Immediately after the polarity reversal, it was confirmed that a severe electric field was concentrated on the conductor side. Additionally, the fast polarity reversal of the applied voltage further intensified the transient field at the interface between the conductor and polymeric insulation." @default.
- W4224227800 created "2022-04-26" @default.
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- W4224227800 date "2022-03-15" @default.
- W4224227800 modified "2023-09-27" @default.
- W4224227800 title "Simulation of Space Charge Accumulation and Transient Electric Field within Polymeric Dielectric under Polarity Reversal" @default.
- W4224227800 doi "https://doi.org/10.1109/icepe-st51904.2022.9757112" @default.
- W4224227800 hasPublicationYear "2022" @default.
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