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US 2025/0149874 A1Published application
Fault classification and zone identification in a power transmission system
AssigneeHitachi Energy Ltd
InventorsOD NAIDU, Neethu GEORGE
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Abstract
Fault classification and zone identification in a power transmission system are described. Voltage or current measurements are obtained at a terminal of the transmission line in each of the three phases measured during a fault. Modal transformations are performed on voltage or current measurements to obtain traveling wave signals with reference to each of the three phases. Based on the magnitude of the traveling wave signals the fault is classified.
Claims12
A method for fault classification, the method comprising:
- obtaining voltage or current measurements at a terminal of a transmission line in each of three phases measured during a fault;
- performing modal transformations on the voltage or current measurements to obtain traveling wave signals with reference to each of the three phases;
- and
- classifying the fault based on a magnitude of the traveling wave signals.
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Dependencies are inferred from the claim text.