ACCOUNTING OF LOAD IN REMOTE PROTECTION OF THREE-PHASE POWER TRANSMISSION LINE Russian patent published in 2010 - IPC H02H3/08 

FIELD: electricity.

SUBSTANCE: method for accounting of load for circuits of ground fault in remote protection includes the following steps: current of damage is sent from two ends of power transmission line; measurement of phase currents; assessment of the first full resistance with zero resistance in point of short circuit or with positive-sequence current; assessment of the second full resistance with zero sequence current, assessment of the third full resistance with negative-sequence current; assessment of load export mode, when power flow is directed from the end, where phase currents are measured, to farthest end of power transmission line; assessment of load import mode, when power flow has a reverse direction, i.e. from the farthest end to the end, where the phase currents are measured.

EFFECT: method improvement.

2 cl, 3 dwg