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In recent years, insulating tubular bus-bar has been widely used in power systems for its excellent electrical performance. However, as some new electrical equipment, there is still no unified principle at home and abroad, and little research is done on its operating characteristics. This leads to a confused market, and some abnormal operating phenomena appear in operation. In this paper, a 35kV insulating...
The occurrence of ageing of cross-linked polyethylene (XLPE) cable insulation greatly affects the safe operation of cable system. The influence of different ageing modes on the space charge dynamics and physicochemical properties of insulating materials in highvoltage alternating current (HVAC) XLPE cables was investigated. The XLPE specimens were obtained from un-aged cables, 1-year laboratory accelerated...
It is of great importance to assess the reliability of on-site testing for extruded insulation cables. In the present work, the effect of the applied field frequency on the breakdown performance of cross-linked polyethylene (XLPE) insulation was investigated. An inserted needle was embedded into a 10 kV commercial XLPE cable along the radial direction to simulate the real defects. The shape of the...
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