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- W2510182487 abstract "An oil-paper insulation system which will withstand DC voltage under normal conditions is a key component of converter transformers as well as high voltage direct current (HVDC) bushings. When the system changes its state, operating overvoltage appears. This kind of overvoltage will consequently affect the application of oilimmersed facilities and the safety of entire grid. Therefore, this paper studies the charge coupling behavior of double-layer oil-paper insulation under DC and pulse voltages. From the research of different pulse voltage amplitudes, pulse numbers and polarity, conclusions can be drawn that, with the increase of the pulse voltage amplitudes, DC and pulse voltages in the same polarity cause the absolute value of the initial surface potential to decrease and then rise; while in different polarities, the charge with the same polarity as the pulse voltage increases. Furthermore, for the same pulse voltage, the absolute initial value of the DC voltage applied in the same polarity is higher than that in different polarities. Considering the pulse number effect, it is obvious that the initial value increases with the increase in the pulse number, and then reaches saturation. Also, with the increase in pulse number, the decay rate decreases and thus the charge is slowly dissipated. From the tdV/dt and the decay time curves, the peak value increases with the increase in the pulse number, while the characteristic time varies by the polarity of the DC and pulse voltages." @default.
- W2510182487 created "2016-09-16" @default.
- W2510182487 creator A5071287470 @default.
- W2510182487 creator A5089738799 @default.
- W2510182487 date "2016-08-01" @default.
- W2510182487 modified "2023-09-22" @default.
- W2510182487 title "Charge coupling behavior of double-layer oil-paper insulation under dc and pulse voltages" @default.
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- W2510182487 doi "https://doi.org/10.1109/tdei.2016.7556479" @default.
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