Patent ID: 7053503

Claim:
A cross current compensation control system for a power system, comprising: first and second current transformers disposed at respective sending ends of first and second power systems commonly connected to a bus bar; a plurality of third current transformers disposed in each of sections of the first and second power systems; and a cross current detection compensator having an input terminal and an output terminal, a cross connection line that cross-connects a secondary side of the first and second current transformers to the input terminal, and a cross current compensation line, connecting secondary sides of the plurality of third current transformers in series, connected to the output terminal, wherein the cross current detection compensator supplies a compensation current to the cross current compensation line to cancel a current component corresponding to a cross current that appears at the secondary sides of the plurality of the third current transformers, when the cross current detection compensator detects a cross current that circulates in the bus bar, in a switch that connects the first and second power systems, and in the first and second power systems.