Abstract:
The paper presents an apparent impedance calculation procedure for distance relaying of transmission lines involving FACTS devices, particularly the UPFC (unified power f...Show MoreMetadata
Abstract:
The paper presents an apparent impedance calculation procedure for distance relaying of transmission lines involving FACTS devices, particularly the UPFC (unified power flow controller). The presence of UPFC significantly affects the trip boundaries which are also adversely affected by fault resistance combined with remote end infeed. Depending on the UPFC location, the trip boundary is influenced by the fault location, prefault condition, the arc fault resistance and the parameters of the UPFC itself (series voltage magnitude and phase angle). The adaptive nature of this protection scheme necessitates the use of a neural network for generation of trip boundaries.
Published in: IEEE Transactions on Power Delivery ( Volume: 15, Issue: 1, January 2000)
DOI: 10.1109/61.847226
Citations are not available for this document.
Cites in Patents (1)Patent Links Provided by 1790 Analytics
1.
Saha, Murari; Rosolowski, Eugeniusz; Izykowski, Jan, "METHOD AND ADAPTIVE DISTANCE PROTECTION RELAY FOR POWER TRANSMISSION LINES"
Inventors:
Saha, Murari; Rosolowski, Eugeniusz; Izykowski, Jan
Abstract:
A method and an adaptive distance protection relay for compensating for a remote line end infeed effect during determination of a distance to a resistive fault on a three-phase power transmission line. It is assumed that a fault current flows through the fault resistance. A fault loop impedance is first calculated by a known algorithm from phase voltages and phase currents. A shift of the fault loop impedance is determined from the fault loop impedance, the impedance of the transmission line for the positive current sequence and the phase angle of a complex fault current distribution factor, where the fault current distribution factor is the ratio of the fault loop current to the fault current. The distance to fault is calculated by subtracting the impedance shift from the fault loop impedance and dividing the result by the impedance of the transmission line for the positive current sequence.
Assignee:
ABB TECHNOLOGY LTD
Filing Date:
21 December 2006
Grant Date:
18 January 2011
Patent Classes:
Current U.S. Class:
324512000, 324500000, 361080000
Current International Class:
G01R0310000, H02H0030000
