ARC spectral analysis system
First Claim
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1. A method of detecting arcing faults occurring on a power line, comprising the steps of:
- using a pre-determined arcing fault signal model, which characterizes the behavior of an arcing fault;
monitoring a load signal parameter indicative of the power flowing through said power line;
deriving a frequency spectrum of sample frequency components based on said load signal parameter; and
comparing individual components of said spectrum of sample frequency components to corresponding frequency values of said arcing fault signal model to determine whether an arcing fault exists on said power line.
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Abstract
A method and apparatus are provided for detecting an arcing fault on a power line carrying a load current. The apparatus monitors and analyzes the load current to obtain frequency components. The analyzed load current is then compared to frequency components of an arcing fault model spectrum to determine whether an arcing fault exists on the power line. If the difference between the analyzed load current and the model spectrum is less than a selected error value, then an arcing fault exists on the power line. Otherwise, no arcing fault exists and conditions are normal on the line.
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Citations
11 Claims
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1. A method of detecting arcing faults occurring on a power line, comprising the steps of:
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using a pre-determined arcing fault signal model, which characterizes the behavior of an arcing fault; monitoring a load signal parameter indicative of the power flowing through said power line; deriving a frequency spectrum of sample frequency components based on said load signal parameter; and comparing individual components of said spectrum of sample frequency components to corresponding frequency values of said arcing fault signal model to determine whether an arcing fault exists on said power line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification