A partial discharge (PD) detection system includes a node including a sensor configured to capacitively couple to a shield layer of a cable of an electric power line. The sensor is configured to collect, from the cable, sensor data indicative of an alternating-current (AC) electrical signal in the cable. The system further includes a high-pass filter configured to filter out low-frequency signals from the sensor data, and processing circuitry configured to detect, based on the filtered sensor data, a PD event at a location on the cable that is local to the sensor.

A noise intrusion position estimation device includes: a measurement unit including a pair of detection units to simultaneously measure a temporal change of waveforms of noise on a transmission cable at two separated observation points in the transmission cable; and a calculation unit to receive, from the measurement unit a pair of the waveforms of the noise simultaneously measured, to time-reverse the pair of the waveforms of the noise that has been received, to perform transmission path analysis in which the two observation points are set as positions of signal sources of the time-reversed noise and the time-reversed waveforms are set as excitation waveforms in a transmission line model in which electrical characteristics of the transmission cable are represented, and to output a position of a peak value obtained from a result of the transmission path analysis as an intrusion position of the noise into the transmission cable.

A high-speed signal subsystem testing system includes a processing system having a transmitter and a receiver, a loop back subsystem coupled to the transmitter and receiver to provide a testing communication path between the transmitter and the receiver, and a communication path testing engine coupled to the transmitter and the receiver. The communication path testing engine generates test signal(s) and transmits the test signal(s) via the transmitter and through the testing communication path provided by the loop back subsystem and, in response, receives test signal result(s) via the receiver and through the testing communication path provided by the loop back subsystem, The communication path testing engine processes the test signal result(s) to generate a testing impedance profile for the testing communication path, and compares the testing impedance profile to an expected impedance profile to determine whether a testing communication path issue exists in the testing communication path.

Tracking of health and resilience of physical equipment and related systems are disclosed. A system includes physical equipment and one or more processors. The physical equipment includes one or more assets. The one or more processors are configured to determine a resilience metric for the physical equipment. The resilience metric includes a real power component and a reactive power component based, at least in part, on an aggregation of real components and reactive components of adaptive capacities of the one or more assets. A cyber-physical system includes physical equipment, network equipment configured to enable the physical equipment to communicate over one or more networks, a physical anomaly detection system (ADS) configured to detect anomalies in operation of the physical equipment and provide a physical component of a cyber-physical metric, and a cyber ADS configured to detect anomalies in network communications over the one or more networks.

A method for detecting discrepancies in an electrical grid configuration includes receiving network-communicated telemetry data from a plurality of grid monitoring devices of an electrical grid over a computer network. The apparent grid configuration is estimated based at least in part on the network-communicated telemetry data, and compared to a digital documented configuration of the electrical grid stored in computer storage. Based on the comparison, an indication of a potential discrepancy between the apparent grid configuration and the digital documented grid configuration is output.

A diagnostic device includes electrical connectors, load, power supply, switching circuitry, sensors, and processor. The connectors include first and second sets of terminals for connecting to the conductors of a branch circuit in an upstream and downstream direction, respectively, at an outlet location along the circuit. The switching circuitry can isolate the upstream and downstream sections of the circuit from the outlet location, and selectively connect or disconnect the power supply or the load to the upstream or downstream section. The sensors measure electrical characteristics on the conductors of the circuit to monitor load currents, such as on power, neutral and ground lines, of the upstream and downstream circuit sections. The processor controls the switching circuitry, and obtains diagnostic information corresponding to the monitored load currents on the upstream and downstream sections of the branch circuit, from the measurements performed by the sensors.

Methods, apparatus, and systems for mitigating pinhole defects in optical devices such as electrochromic windows. One method mitigates a pinhole defect in an electrochromic device by identifying the site of the pinhole defect and obscuring the pinhole to make it less visually discernible. In some cases, the pinhole defect may be the result of mitigating a short-related defect.

Methods, apparatus, and systems for mitigating pinhole defects in optical devices such as electrochromic windows. One method mitigates a pinhole defect in an electrochromic device by identifying the site of the pinhole defect and obscuring the pinhole to make it less visually discernible. In some cases, the pinhole defect may be the result of mitigating a short-related defect.

Systems, apparatuses, methods, and computer program products are disclosed for predicting causes of changes in power loss along electric line segments. An example method includes receiving, by a control system, telemetry data from a set of devices in an electrical grid and storing, by the control system, the telemetry data in a memory. The example method further includes calculating, by the control system and using the telemetry data, a change in impedance in an electric line segment between two devices from the set of devices and determining, by the control system, a cause of the change in the impedance in the electric line segment between the two devices. Corresponding apparatuses and computer program products are also disclosed.

A computer system for evaluating the communication performance of an autonomous vehicle is provided. The vehicle may have a vehicle controller including at least one processor in communication with at least one memory device. The processor may be programmed to receive, from a standard data transmission location network device, an evaluation data packet. The processor may be programmed to decode the evaluation data packet and initiate a diagnostic test of the vehicle based upon the decoded evaluation data packet. The processor may also be programmed to record measurements of the vehicle during the diagnostic test, and transmit the measurements to the standard data transmission location network device.