Magnetostrictive current sensor method and system
| DWPI Title: Method for determining state of electrical conductor that generating magnetic field using non-invasive sensor, involves providing sensor assembly to magnetostrictive resonator sensor in close proximity to electrical conductor, permit magnetostriction effect |
| Abstract: A method and system for determining the state of one or both of an electrical conductor or an associated system utilizing a non-invasive sensor and a magnetostrictive response from the current of the electrical conductor. The method includes providing a sensor assembly including a magnetostrictive resonator sensor and a signal detector. A state of one or both of the electrical conductor or the associated system is determined with the fault detector in response to a first frequency profile and a second frequency profile obtained with the magnetostrictive resonator sensor. A fault monitoring system utilizing a magnetostrictive resonator sensor is also disclosed. |
| Use: Method for determining state of electrical conductor that generating magnetic field using non-invasive sensor and magnetostrictive response from current of electrical conductor. |
| Advantage: The method ensuring conditions and / or state that may be determined includes slowly increasing ground fault current, frequencies (indicative of degradation or arc faults), instantaneous excessive harmonic(s) composition (indicative of much abnormal behavior) and other parasitic faults (such as ground or line-to-line faults). |
| Novelty: The method (400) involves providing (401) a sensor assembly that includes magnetostrictive resonator sensor and a signal detector. An electrical conductor is interrogated by the sensor with magnetic field impulse to obtain magnetic frequency profiles. The frequency profiles are transmitted (407) to a fault detector. State of the electrical conductor with the fault detector is determined (409) in response to the frequency profiles, where the sensor assembly is arranged and applied to permit magnetostriction effect between the magnetic field generated by the conductor and the sensor. The sensor is interrogated with an interrogator at an interrogation frequency (F). |
| Filed: 1/18/2022 |
| Application Number: US17577453A |
| Tech ID: SD 15120.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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