Recovery of a Nonlinearly Distorted Short-Circuit Current from a Small Number of Counts

Autor: Yu. Ya. Lamets, I. E. Petryashin, I. Yu. Nikonov
Rok vydání: 2021
Předmět:
Zdroj: Power Technology and Engineering. 55:291-295
ISSN: 1570-1468
1570-145X
Popis: This article discusses the underlying criteria for the procedure for correcting the registered short-circuit current distorted due to high saturation of the current transformer. The general procedure is divided into two. Procedure 1 represents the segmentation of the process observed, i.e., dividing it into intervals of undistorted and distorted transformations. Procedure 2 combines the information from different intervals. The undistorted transformation from two intervals is the easier way, which requires sufficiently long-term monitoring of the current. Special attention is paid to the possibility of involving information from the interval of the distorted transformation. The article provides examples of the recovery of simulated currents. Here, the undistorted current in the primary circuit of the current transformer is known and the digital oscillograms of the real currents are recorded by the relay protection terminals.
Databáze: OpenAIRE
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