Data processing: measuring – calibrating – or testing – Measurement system – Performance or efficiency evaluation
Reexamination Certificate
2007-10-23
2007-10-23
Tsai, Carol S. W. (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Performance or efficiency evaluation
C702S058000, C702S059000, C702S060000, C324S512000, C324S522000, C324S525000
Reexamination Certificate
active
11320835
ABSTRACT:
A method for locating a fault in three terminal power line, having sections located in front of or behind of the tap point and which assumes occurrence of the fault in at least one of those sections. Three phase currents and voltages are measured at one end of the power lines system. The amplitudes of load currents in the remaining sections of the power lines system are measured before a fault occurs. The measurements of the amplitudes of load currents are stored in the remaining sections of the power lines system. Impedance data of the network are determined. The symmetrical components approach is used when calculating the location of the fault.
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Izykowski Jan
Molag Rafal
Rosolowski Eugeniusz
Saha Murari Mohan
ABB Technology Ltd.
Franklin Eric J.
Tsai Carol S. W.
Venable LLP
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