论文信息 - SENSITIVITY ASPECTS OF ON-LINE PD DIAGNOSIS OF MV POWER CABLES

SENSITIVITY ASPECTS OF ON-LINE PD DIAGNOSIS OF MV POWER CABLES

For the determination of the insulation condition of the distribution power cable grid, several on-site diagnostic measuring methods have been developed [1-3]. Most of the developed techniques work off-line, which means that during the test the cable section has to be disconnected from the network and energised by an external voltage source, e.g. 50 Hz AC, VLF or DAC energising. In that way, applying to the cable sample AC test voltages between PD inception voltage (PDIV) and 2U0 the discharge behaviour of cable insulation can be analysed to obtain most complete information about the insulation condition.

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