Systems and methods performed by a fault detection apparatus for fault detection and localization in distribution feeders having branches and nodes. The method including receive feeder raw data in a feeder of a power system. Process the feeder raw data with given operational electrical characteristics of the feeder to generate a branch attribute dataset for each branch separated by a pair of nodes for all branches. Generate a node attribute dataset for each node for all the nodes in the feeder. Input the branch and node attribute datasets into a trained neural network to determine whether a branch has a fault and a fault location within the branch, to output a classification of the fault and the fault location. Generate an alert signal based upon determining the classified fault and fault location in response to the alert signal to an outage response system.

Techniques, systems and articles are described for monitoring electrical equipment of a power grid and predicting likelihood failure events of such electrical equipment. In one example, a cable accessory is configured to couple to an electrical power cable and includes a partial discharge sensor and a communications unit. The partial discharge sensor is configured to detect partial discharge events and output data indicative of the partial discharge events. The communications unit is configured to output event data based at least in part on the partial discharge data.

Techniques, systems and articles are described for monitoring electrical equipment of a power grid and predicting likelihood failure events of such electrical equipment. In one example, a cable accessory is configured to couple to an electrical power cable and includes a partial discharge sensor and a communications unit. The partial discharge sensor is configured to detect partial discharge events and output data indicative of the partial discharge events. The communications unit is configured to output event data based at least in part on the partial discharge data.

A measuring instrument and a method checks the functional capability of an electric heating wire of a surface heating system before it is installed and indicates damage to the heating wire while it is being installed. The instrument includes a power supply, connecting devices electrically connected to the power supply and to which the free ends of an electric heating wire can be connected such as to form a current circuit on the power supply, a resistance measuring device designed to record the electric resistance of a heating wire connected to the power supply, a display device which displays an electric resistance of a heating wire recorded by the resistance measuring device, and a warning device designed to emit an acoustic signal when the electric resistance of a heating wire recorded by the resistance measuring device strays from a target value range defined by the measuring instrument.

The invention concerns a method for monitoring a cable strand containing multiple electrical lines, such that the cable strand is designed to conduct electrical energy generated by a generator in a wind turbine involving the steps: measuring the temperature of at least two of the electrical lines, comparing the temperatures of said lines, and determining whether the two temperatures deviate from one another by more than a predefined threshold.

A system to identify potential faults in an electrical power distribution system includes a vibration monitor configured to detect a vibration event proximate a portion of the electrical power distribution system, a power quality monitor configured to detect a power quality event in a portion of the electrical power distribution system, an analysis system configured to correlate the vibration event detected by the vibration monitor with the power quality event detected by the power quality monitor, and an output configured to receive information regarding the power quality event from the analysis system and to provide the information to an operator.

The embodiment of the present disclosure discloses a jumper cable and an ignition control method, which are applicable to the field of electronic technology. The jumper cable includes a main control module, and a startup detection module, a voltage-stabilizing power supply module, a voltage detection module, a temperature detection module, a relay control module, a startup communication module, a positive ignition clip and a negative ignition clip connected with the main control module. The relay control module includes a relay switch. The first end of the relay switch is connected with the voltage-stabilizing power supply module, which is connected with the positive ignition clip. The second end of the relay switch is connected with the startup detection module and the negative ignition clip. The startup communication module is connected with the startup power supply.

Disclosed are methods and devices for testing downhole connector electrical systems and cable integrity during installation of a permanent completion, including a customized retrievable plug arm assembly connectable to the completion during RIH, the tool mimicking a retrievable ESP, but without motor, and can be employed with or without pressure isolation. Another method employs a slidable starpoint located within the downhole wet mate connector of the completion to provide continuous electrical contact between the phases when no retrievable assembly is in place. When a retrievable assembly is later put in place, the slidable starpoint is moved into a second position that no longer provides electrical contact between the phases. Another method uses fusible links installed between two conductors within the downhole electrical connector system of the completion to provide similar electrical contact between phases, the fusible link configured to melt away once motor current is sent through the conductors.

An electrical connector assembly includes a first connector member, a second connector member configured for connection with the first connector member, a first insulator disposed at least partially in the first connector member and/or the second connector member, a second insulator disposed at least partially in the first connector member and/or the second connector member, and a circuit board configured to be disposed at least partially between the first insulator and the second insulator in a connected configuration of the electrical connector assembly. The circuit board may include an electrical characteristic sensor and/or a temperature sensor.

One embodiment can provide a system for estimating useful life of a load-bearing structure. During operation, the system can perform a degradation measurement on the structure to obtain degradation data for a predetermined time interval, apply a constraint convex regression model to the degradation data, estimate a total useful life (TUL) of the structure based on outputs of the constraint convex regression model, and predicting a remaining useful life (RUL) based on the TUL and a current time.