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The Thomas & Betts International, Inc. patent solves the following problem:
The three power-supplying phase feeders (conductor) monitor to detect electrical fault conditions on-line distribution of an electrical power distribution network (grid). Clear or repair the faults, such as short circuit, it is important to first determine the wrong place. In conventional overhead systems to distribute with a normal power flow direction, with the power flow in the opposite direction (reverse power flow) only for the purpose of contingency. Reverse the direction of power flow always known by staff and system operations accounted for system operation and maintenance.
Our analysis of this patent is as follows:
Thomas & Betts International, Inc.’s patent US 7969155 B2 deals with Directional fault current indicator.
A method for identifying a fault condition associated with a power line conductor in an electrical power distribution network. way to determine if a load current conductor brought in more than one minimum load current, determines a learned angle of the relationship between the load current and a source signal, determines a load current magnitude, determine a real-time angle of the relationship between the load current and the source signal and indicates a fault condition when the real-time phase angle relationship is in a predetermined number of square-learned about relationships and angle when the load current magnitude greater than a fault-indicating current.
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