Research on Electric Heat Aging Test Device for Cable Accessories Based on Power Electronic Transformer

Cable accessories in the operation process to withstand the synergistic effect of electrical and thermal insulation gradually aging failure, the traditional electrical and thermal test device can only simulate a particular type of working conditions, such as frequency voltage, series resonance voltage and so on. Based on the power electronic transformer, the research team has developed a new type of cable accessories aging device, which can simulate a variety of test conditions. At the same time, the whole system can have fast dynamic characteristics, inthe event of over-voltage, over-current protection can be quickly acted.