Method and system for detecting a fault in a transmission line from a phase measurement
OwnerEsteban CABANILLAS, Christophe LAYERinventors
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Abstract
A method for detecting a fault in a transmission line, includes the following steps: acquiring, at a point of the line, using a measurement device, a temporal measurement of a reference signal previously injected into the line using an injection device, reflected off a singularity of the line and propagated back to the point, converting the temporal measurement of the signal into the frequency domain, measuring the phase of at least one frequency component of the signal, subtracting a reference phase from each measured phase in order to obtain a corrected phase, determining the distance ld between the point of the line and the singularity from at least one corrected phase.
Claims17
A method for detecting a fault in a transmission line, comprising the steps of:
- acquiring, at a point of the line, using a measurement device, a temporal measurement of a reference signal previously injected into the line using an injection device, reflected off a singularity of the line and propagated back to said point,
- converting the temporal measurement of the signal into the frequency domain,
- measuring the phase of at least one frequency component of the signal,
- subtracting a reference phase from each measured phase in order to obtain a corrected phase,
- determining the distance ld between said point of the line and the singularity from at least one corrected phase.
A system for detecting a fault in a transmission line comprising a measurement device able to acquire, at a point of the line, a temporal measurement of a reference signal previously injected into the line, reflected off a singularity of the line and propagated back to said point and:
- a spectral conversion unit for converting the temporal measurement of the signal into the frequency domain,
- a phase measurement device for measuring the phase of at least one frequency carrier of the signal,
- a subtractor for subtracting a reference phase from each measured phase in order to obtain a corrected phase,
- a calculation unit for determining the distance ld between said point of the line and the singularity from at least one corrected phase.
A computer program comprising instructions stored on a tangible non-transitory storage medium for executing on a processor a method for detecting a fault in a transmission line, comprising the steps of:
- acquiring, at a point of the line, using a measurement device, a temporal measurement of a reference signal previously injected into the line using an injection device, reflected off a singularity of the line and propagated back to said point,
- converting the temporal measurement of the signal into the frequency domain,
- measuring the phase of at least one frequency component of the signal,
- subtracting a reference phase from each measured phase in order to obtain a corrected phase,
- determining the distance ld between said point of the line and the singularity from at least one corrected phase.
A tangible non-transitory processor-readable recording medium on which is recorded a program comprising instructions for executing
- a method for detecting a fault in a transmission line, comprising the steps of:
- acquiring, at a point of the line, using a measurement device, a temporal measurement of a reference signal previously injected into the line using an injection device, reflected off a singularity of the line and propagated back to said point,
- converting the temporal measurement of the signal into the frequency domain,
- measuring the phase of at least one frequency component of the signal,
- subtracting a reference phase from each measured phase in order to obtain a corrected phase,
- determining the distance ld between said point of the line and the singularity from at least one corrected phase.
Dependencies are inferred from the claim text.