H - Electricity – 02 – H
Patent
H - Electricity
02
H
348/28
H02H 7/28 (2006.01) G01R 27/16 (2006.01) G01R 31/08 (2006.01) H02H 3/40 (2006.01) H02H 3/42 (2006.01)
Patent
CA 1294355
ABSTRACT OF THE DISCLOSURE The invention relates to a configuration for rapid detection of short-circuits and for generating an electrical trigger command with an electronic measuring and processing configuration for current values, which compared in a digital comparison circuit with predetermined limit values transmits the trigger command. The measuring configuration determines the current over time as well as the voltage of the grid and the resulting complex impedances and power. In addition to segmentation, standardization and scaling of the current and voltage values, a cross correlation function as well as the respective product and quotient of the Fourier tranforms of the voltage and the current for frequency ranges associated with each other are determined, so that a respective power and impedance spectrum are obtained for evaluating the state of the installation.
543497
Maier Reinhard
Nippert Thomas
Trenkler Gerhard
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
Maier Reinhard
Nippert Thomas
Trenkler Gerhard
LandOfFree
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