METHOD FOR DETERMINING MAXIMAL CAPACITANCE CURRENT OF ONE-PHASE SHORT CIRCUIT WITH GROUND IN THREE-PHASE CABLE ELECTRIC NETWORK WITH GROUNDING, ARC-ABSORBING SMOOTHLY-ADJUSTABLE REACTOR Russian patent published in 2005 - IPC

FIELD: electric engineering.

SUBSTANCE: method includes compensation of capacitance current of one-phase network short-circuit to ground with temporary connection between one of network phases and ground of additional capacity and combined measuring processes of value of phase voltage, neutral line shift voltage and current through reactor. During next compensation of capacitance current of one-phase short-circuit on ground, full conductivity of reactor is additionally determined, active and reactive conductivities of reactor based on given functional dependencies from full conductivity of reactor. In time spans between next compensations of capacitance current of one-phase closing of network and ground, between one of phases of network and ground an additional standard capacity is connected temporarily. Combined measurements of values of neutral shift voltage, phase voltage of network and angle of shift via neutral shift voltage phase relatively to phase voltage of network in phase with additional standard capacity.

EFFECT: higher precision, broader functional capabilities.

2 cl, 1 dwg