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公开(公告)号：US11289900B2
公开(公告)日：2022-03-29
申请号：US16576324
申请日：2019-09-19
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： James Mobley , Shankar V. Achanta , Raymond W. Rice
Abstract: The present disclosure pertains to detection of a broken conductor in an electric power system. In one embodiment, a broken conductor detector may be configured to be mounted to an electrical conductor and may comprise a communication subsystem configured to transmit a signal configured to indicate that the conductor is broken. A sensor may determine a plurality of vectors. A processing subsystem may be configured to receive the plurality of vectors from the sensor and to identify when the vector is outside of a range defined by a threshold value. The processing subsystem may determine that the conductor is falling based on the plurality of vectors remaining outside of the threshold for a period of time determined by the timer subsystem. A signal may be transmitted by the communication subsystem to indicate that the conductor is falling.
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公开(公告)号：US20210102981A1
公开(公告)日：2021-04-08
申请号：US16592154
申请日：2019-10-03
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： James Mobley
Abstract: The present disclosure relates to spectral analysis in wireless current sensors. For example, a wireless current sensor (WCS) includes current transformer windings that harvest electrical energy from a power line and allow the WCS to obtain current measurements of the power line. The WCS includes a processor that obtains the current measurements of the power line via the current transformer windings. The processor generates a frequency domain representation of the current on the power line using the current measurements. The processor sends a wireless signal indicating results from the frequency domain representation to an intelligent electronic device (IED) that monitors the power line to allow the TED to analyze the results for anomalies.
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公开(公告)号：US20210091559A1
公开(公告)日：2021-03-25
申请号：US16576324
申请日：2019-09-19
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： James Mobley , Shankar V. Achanta , Raymond W. Rice
Abstract: The present disclosure pertains to detection of a broken conductor in an electric power system. In one embodiment, a broken conductor detector may be configured to be mounted to an electrical conductor and may comprise a communication subsystem configured to transmit a signal configured to indicate that the conductor is broken. A sensor may determine a plurality of vectors. A processing subsystem may be configured to receive the plurality of vectors from the sensor and to identify when the vector is outside of a range defined by a threshold value. The processing subsystem may determine that the conductor is falling based on the plurality of vectors remaining outside of the threshold for a period of time determined by the timer subsystem. A signal may be transmitted by the communication subsystem to indicate that the conductor is falling.
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公开(公告)号：US20210088561A1
公开(公告)日：2021-03-25
申请号：US16576302
申请日：2019-09-19
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： James Mobley , Raymond W. Rice
Abstract: The present disclosure pertains to a line-powered current measurement system to mount to an electrical conductor and related methods. In one embodiment, a system may comprise a current transformer to electrically couple to an electrical conductor and to generate a secondary current proportional to a primary current in the conductor. A power harvesting subsystem may harvest power from the secondary current in a first configuration. A switching subsystem may transition the line-powered current measurement device between the first configuration and a second configuration, in which a current measurement subsystem generates a measurement of the secondary current. The switching subsystem may provide the secondary current to the power harvesting subsystem in the first configuration and may bypasses the power harvesting subsystem in the second configuration. A communication subsystem may transmit the measurement of the secondary current to a receiver device.
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