Abstract

In the paper, we will introduce a new approach of pattern recognition theory. In the control of power systems, the prerequisite of protection device's accurate, fast and reliable performance is its corresponding fault type and fault location can be detected quickly and defined exactly. In our researches, global information will be introduced into the backup protection system, basing on linear discriminant analysis of pattern recognition theory, we are going to seek after for the data characteristics of electrical quantities' marked changes by analyzing and computing real-time PMU measurements, so that we carry out fast and exact discrimination of fault components and fault sections.

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