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The stability and reliability of the polymer dielectric is a very important factor in the development of HVDC model cable. When a high DC voltage is applied to a polymer dielectric for a long time, the electric charge is significantly affected by the accumulated space charge inside the dielectric. This could distort the interface electric field and the internal electric field of the HVDC model cable,...
Recently, electrical stress within the solid dielectric material, due to the accumulation of space charges in a high voltage field, has been a major contributor to the dielectric breakdown. One of the methods in checking the accumulation of space charge is by using the pulsed electro-acoustic (PEA) method to measure the distribution of space charge. When the space charge is measured using acoustic...
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