Abstract: Disclosed is an apparatus and a tool for installation of a measurement coil. The apparatus includes a tool and a holder. The tool has a first portion and a second portion at least partially surrounding the first portion. The first portion is configured to receive a conductor and the second portion is configured to hold a measurement coil. The holder is configured to be detachably attached to the tool, wherein the holder is to be employed to install the tool holding the measurement coil onto a conductor. The first portion is configured to fit onto the conductor during installation, and the measurement coil at least partially surrounds the conductor when installed.

Abstract: A method of measuring current for fault detection in a distribution grid. The method includes: using three current transformers, wherein three current transformers are connected to one another; installing three connected current transformers in series on three phase conductors by winding; measuring voltages of three series connected current transformers by measuring first voltage over first current transformer, measuring second voltage over first current transformer and second current transformer, measuring third voltage over first current transformer, second current transformer and third current transformer; using measured first voltage, second voltage and third voltage for determining sum current; using measured first voltage, second voltage, third voltage and calculated sum current for calculating phase currents; using determined sum current and phase currents to detect first fault transient in the distribution grid.

Abstract: An apparatus and a tool for installation of a measurement coil. The apparatus includes a tool and a holder. The tool includes a first portion and a second portion at least partially surrounding the first portion. The first portion is configured to receive a conductor and the second portion is configured to hold a measurement coil. The holder is configured to be detachably attached to the tool, wherein the holder is to be employed to install the tool holding the measurement coil onto a conductor. The first portion is configured to snap fit onto the conductor during installation, and the measurement coil at least partially surrounds the conductor when installed.

Abstract: Disclosed is a sensing apparatus with a first sensor device, second sensor device, third sensor device, which sense magnetic fields to generate sensor data, and a first processor. The sensing apparatus is arranged on an electrical pole of the electrical utility grid. The second sensor device overlaps with the first sensor device to form a cross-positioned two-sensor configuration. The third sensor device is arranged at distance from it. The first processor is configured to pre-process sensor data to send to the second processor, generate and send measurement data to the second processor for reproducing overhead line phase currents, and send measurement data to the third processor which utilizes the measurement data for monitoring and managing events and faults in the electrical utility grid.

Abstract: A power harnesser for harvesting electrical power from an electrical power supply including a current transformer arrangable to surround an electrical power supply such that the electrical power supply induces a secondary current in a secondary winding of current transformer, a power conversion module coupled to the secondary winding of the current transformer, sensing module arrangable to surround the electrical power supply and operable to measure at least one of: the secondary current, a voltage at first end of the secondary winding, a voltage at second end of the secondary winding; and a control unit coupled to the sensing module and the power conversion module. The control unit is operable to determine a target electrical power, determine regulation attribute for the power conversion module and adjust the power conversion module based on the determined regulation attribute to enable the power conversion module to generate the target electrical power.

Abstract: An apparatus and a tool for installation of a measurement coil. The apparatus includes a tool and a holder. The tool includes a first portion and a second portion at least partially surrounding the first portion. The first portion is configured to receive a conductor and the second portion is configured to hold a measurement coil. The holder is configured to be detachably attached to the tool, wherein the holder is to be employed to install the tool holding the measurement coil onto a conductor. The first portion is configured to snap fit onto the conductor during installation, and the measurement coil at least partially surrounds the conductor when installed.

Abstract: A system and a method for management of an electric grid. The system includes at least one monitoring server and at least one grid monitoring sensor communicably coupled to the at least one monitoring server. Herein the given grid monitoring sensor is installed to a given electrical utility pole of the electric grid. Each of the at least one grid monitoring sensor includes a magnetic sensor for measuring a time-variant magnetic field induced by current transients in the electric grid.