Partial discharge (PD) measurement has be carried out for verification of extra-high voltage XLPE cable lines, and has needed long duration. Corresponding to the long-term measurement, the authors developed automatic-discrimination system of partial discharge signal using fuzzy filtered synapse (FFS) network. FFS network has many advantages over the conventional neural network (back propagation method), such as faster leaning speed, easier understanding of the learning result and so on. The outline of FFS network, signal process of automatic-discrimination, and results of verification test of automatic-discrimination system is described in this paper.
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