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Statistical Properties of Voltage Dip Detectors

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4 Author(s)
Guerrieri, G. ; Dept. of Electron. & Inf. Eng., Univ. of Perugia, Perugia, Italy ; Moschitta, A. ; Carbone, P. ; Muscas, C.

In this paper, some statistical properties of procedures defined to detect voltage dips in electric power systems are discussed. First, a theoretical model of the root-mean-square based test proposed in the IEC 61000-4-30 is provided and validated. Then, an alternative detection algorithm, based on the Generalized Likelihood Ratio Test (GLRT), is proposed, and compared to the 61000-4-30 test. It is shown that the GLRT may provide competitive performance, in terms of Receiver Operating Characteristic (ROC), if compared to the standardized procedure.

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Instrumentation and Measurement, IEEE Transactions on  (Volume:59 ,  Issue: 11 )