Adaptive Kalman filtering in fault classification
Patent
·
OSTI ID:6109971
A method is described for digital distance-relaying on a three phase electric power transmission system comprising the steps of: successively sampling line values from each line of the transmission system, and comparing the values with corresponding sample values taken one cycle earlier; electronically detecting an abnormality on the transmission line from a comparison of the samplings; recursively electronically processing line current data samples and line voltage data samples of each phase of the transmission line in respective current and voltage Adaptive Kalman filter schemes; determining whether the voltage and current waveform sinusoid estimates indicate that the fault lies within a predetermined zone; and means for a section of the transmission line corresponding to the zone when the voltage and current waveform sinusoid estimate indicates that the fault lies within the predetermined zone, in automatic response to the determining step.
- Assignee:
- NOV; NOV-89-059113; EDB-89-098340
- Patent Number(s):
- US 4812995
- OSTI ID:
- 6109971
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
200300* -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
COMPUTERIZED SIMULATION
DIGITAL SYSTEMS
ELECTRICAL EQUIPMENT
ELECTRICAL FAULTS
EQUIPMENT
POWER TRANSMISSION
POWER TRANSMISSION LINES
RELAYS
SIMULATION
WAVE FORMS
24 POWER TRANSMISSION AND DISTRIBUTION
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
COMPUTERIZED SIMULATION
DIGITAL SYSTEMS
ELECTRICAL EQUIPMENT
ELECTRICAL FAULTS
EQUIPMENT
POWER TRANSMISSION
POWER TRANSMISSION LINES
RELAYS
SIMULATION
WAVE FORMS