Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Reexamination Certificate
2007-11-20
2007-11-20
Benson, Walter (Department: 2858)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
C324S521000, C324S522000, C324S525000, C324S531000
Reexamination Certificate
active
10518430
ABSTRACT:
A method to locate a fault from one end of a section of a power line utilizing measurements of current, voltage and angles between the phases at a first end of said section. Symmetrical components of currents are calculated for the current and voltage measurement at the first end. A value of impedance is calculated for an extra link between the terminals with the impedance for the positive sequence. A compensation is determined for the shunt capacitance. The zero-sequence current is determined from the healthy line of a section of parallel power lines. A distance to a fault is calculated for the parallel line section. The distance to the fault from the first end is calculated. The fault is located utilizing the calculate distances.
REFERENCES:
patent: 4107778 (1978-08-01), Nii et al.
patent: 4559491 (1985-12-01), Saha
patent: 5661664 (1997-08-01), Novosel et al.
patent: 6476613 (2002-11-01), Saha et al.
patent: 7221166 (2007-05-01), Saha et al.
patent: 2004/0167729 (2004-08-01), Saha et al.
patent: 761953 (1980-09-01), None
patent: WO 0358488 (1994-06-01), None
Izykowski Jan
Rosolowski Eugeniusz
Saha Murari Mohan
ABB A.B.
Benson Walter
Franklin Eric J.
Venable LLP
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