METHOD OF MONITORING METROLOGICAL ERROR OF CURRENT MEASURING CHANNELS Russian patent published in 2024 - IPC G01D18/00 G01D3/06 

FIELD: measuring.

SUBSTANCE: invention relates to a method for monitoring metrological error of current measuring channels. Disclosed method of monitoring metrological error of current measuring channels includes connecting to measuring current transformers installed on all lines that make up the current node of the electrical network, control unit configured to obtain current values from all measuring current transformers connected to it and cumulative measurement of currents in order to find the balance of currents in the node according to the Kirchhoff rule, namely, calculating the algebraic sum of the results of simultaneous measurements of all currents in the node and comparing it with the calculated total permissible absolute error of the current measuring channels on all lines that make up this node, and, if the algebraic sum of the results of simultaneous measurements by the absolute value is greater than the total permissible absolute error of the measuring channels, generating a signal on exceeding the permissible error.

EFFECT: improving operating reliability of all measurement systems, structural means due to automatic control of metrological error of measuring current transformers, which make up the current node of the electric network.

1 cl, 3 dwg