Signal outage detection
AssigneeHunt Technologies, Inc.
InventorsDamian Bonicatto, Chad Wolter, Verne Olson
Life of this patent
Estimating the term…
Abstract
Disclosed are various embodiments for outage detection. In one embodiment, an outage detection system includes a signal sampler configured to sample a signal on a communications link and to determine a noise level and a signal level of the sample. An outage detection system also includes a comparator configured to compare a critical value with a sum of signal and noise of the sample. An outage detection system further includes a binomial probability analyzer configured to calculate a binomial probability of false outage of the sample and the previous N samples.
Claims21
A power distribution substation, comprising:
- a signal sampler configured to sample a signal on a communications link, the signal sampler further configured to determine a noise level and a signal level of the sample and to sample a plurality of signals at predetermined intervals;
- a comparator configured to compare a critical value with a first sum of signal and noise of the sample, the critical value based upon on the signal level and the noise level and having a value substantially similar to a second sum of signal and noise at which probability density functions of false signal detection and false outage detection on the communications link are substantially similar;
- a binomial probability analyzer configured to calculate a binomial probability of false outage and a binomial probability of false signal detection of the sample and the previous N samples;
- and
- a vote register configured to store a vote value based upon the comparison of the first sum of signal and noise of the sample to the critical value, the vote value corresponding to whether the sample is indicative of an outage or a signal detection and the vote register configured to store a plurality of vote values corresponding to the sample and the previous N samples, wherein the vote value can be assigned a binary value corresponding to an outage or a restore.
A power distribution substation, comprising:
- a signal sampler configured to sample a signal on a communications link, the signal sampler further configured to determine a noise level and a signal level of the sample;
- a comparator configured to compare a critical value with a first sum of signal and noise of the sample, the critical value based upon on the signal level and the noise level and having a value substantially similar to a second sum of signal and noise at which probability density functions of false signal detection and false outage detection on the communications link are substantially similar;
- and
- a binomial probability analyzer configured to calculate a binomial probability of false outage of the sample and the previous N samples.
A method, comprising the steps of:
- receiving in a processor based system a sample of a signal on a communications link;
- determining in a processor based system a noise level of the sample;
- determining in a processor based system a signal level of the sample;
- comparing a critical value with a first sum of the signal level and the noise level, the critical value being based upon on the signal level and the noise level and having a value substantially similar to a second sum of signal level and noise level at which probability density functions of false signal detection and false outage detection on the communications link are substantially similar;
- and
- calculating a binomial probability of false outage detection of the previous N samples.
Dependencies are inferred from the claim text.