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Information-Measuring System for Rapid Determination of Power Electrical Equipment Parameters

The problem of dynamic measurement of periodic signal parameters in the control of power electrical equipment is considered. A complex of five methods for rapid measurement of the current and voltage values of the periodic signals, active and reactive power has been developed. The method is based on the use of additional signals, separated in space. Based on the proposed methods, an information-measuring system with a flexible structure has been created, adapting to the measurement tasks. The report considers an example of the use of the information-measuring system for the routine tests of power electrical equipment. The methodical error estimation of the informative parameters determining method was performed, which is caused by the deviation of the real signal from the harmonic form. The expressions for the relative errors in determining the root-mean square value of the signals and the reduced measurement error of the active and reactive power are obtained. The developed methodology provides for the selection of appropriate measurement tools depending on the required accuracy of measurement parameters.