A lattice tower for high-voltage overhead transmission lines having a lattice structure is provided that includes: a base anchored to the ground; a top portion designed for anchoring first and second conductors of a high-voltage overhead transmission line; and a body which extends between the base and the top portion. The lattice tower includes a grid high-voltage electric switching substation that includes: GIS-technology-based switchgear equipment arranged within the base of the lattice structure; a first loop-in loop-out feeder connection configured to connect the first conductors of the high-voltage overhead transmission line to the GIS-technology-based switchgear equipment and made by insulated cables or GIS-technology-based ducts, or by mixed solutions wherein a first portion is made by bare conductors and a second portion is made by insulated cables or GIS-technology-based ducts; a second loop-in loop-out feeder connection configured to connect the second conductors of the high-voltage overhead transmission line to the GIS-technology-based switchgear equipment and made by insulated cables or GIS-technology-based ducts, or by mixed solutions, wherein a first portion is made by bare conductors and a second portion is made by insulated cables or GIS-technology-based ducts; and a protection, command and control system arranged within the lattice structure, or in proximity to the base of said lattice structure; wherein the GIS-technology-based switchgear equipment is designed to be connected also to a user connection line.

A power tether for aerial devices such as balloons or drones operates with as few as a single conductor, providing a ground return by capacitive coupling between the aerial device and a ground plane at a base station. High-frequency, high-voltage power allows significant power transfer through the low capacitance between the aerial station and the ground minimizing the necessary current flow.

A power tether for aerial devices such as balloons or drones operates with as few as a single conductor, providing a ground return by capacitive coupling between the aerial device and a ground plane at a base station. High-frequency, high-voltage power allows significant power transfer through the low capacitance between the aerial station and the ground minimizing the necessary current flow.

Disclosed and described herein are embodiments of an articulated utility pole that facilitates repair and/or reinstallation in the event of damage to the pole caused by wind loading (e.g., storms), trees or other items striking the utility lines, collisions with the poles, and the like. Also disclosed herein are methods of repairing and/or re-installing the articulated utility pole. Further disclosed herein are components for fabricating an articulated utility pole.

An in-line power disconnect assembly for electrical power distribution systems is provided. The in-line power disconnect assembly includes a first end section, a second end section, at least one insulator positioned between the first end section and the second end section, and a switch assembly positioned between the first end section and the second end section. Each of the first and second end sections include a conductor clamp that can be rotated or twisted relative to a longitudinal axis of the first or second end section between a clamping position and an open position.

The present disclosure relates to towers for wind turbines comprising a top section supporting a nacelle about a yaw axis, wherein the nacelle comprises an electric power component and a power cable for electrically connecting the electric power component to an electrical connection point in a lower section of the tower. The power cable extends downwards from the nacelle to a first height along a substantially central area of the tower, and at a first height the power cable comprises a power cable loop. The power cable loop includes an upwards curve, and a downwards curve. The power cable loop comprises a movable cable part, and a fixed cable part, and the fixed cable part comprises at least a portion of the downwards curve. The present disclosure further relates to wind turbines and to methods for arranging cables in wind turbine towers.

The present disclosure relates to towers for wind turbines comprising a top section supporting a nacelle about a yaw axis, wherein the nacelle comprises an electric power component and a power cable for electrically connecting the electric power component to an electrical connection point in a lower section of the tower. The power cable extends downwards from the nacelle to a first height along a substantially central area of the tower, and at a first height the power cable comprises a power cable loop. The power cable loop includes an upwards curve, and a downwards curve. The power cable loop comprises a movable cable part, and a fixed cable part, and the fixed cable part comprises at least a portion of the downwards curve. The present disclosure further relates to wind turbines and to methods for arranging cables in wind turbine towers.

UAV airways system generally are disclosed. Such UAV airway systems may comprise UAV cargo transportation systems and UAV surveillance and monitoring systems. Such systems preferably overlay and are commensurate with a system of high-voltage power transmission lines of high-voltage transmission system, and electric field actuated (EFA) generators preferably are utilized in UAVs that travel along the transmission lines, in UAV charging stations located along the transmission lines, or in both. Each EFA generator represents a power supply and comprises first and second electrodes separated and electrically insulated from each other for enabling a differential in voltage at the first and second electrodes resulting from a differential in electric field strength experienced by the first and second electrodes arising from the power transmission lines of the high-voltage transmission system.

A sleeve protector for wires, includes: a hollow cover which has a slit formed along the center line of the bottom thereof in order to cover a wire with the cover by opening the cover in the opposite directions and then placing the cover on the wire; a pair of hook-shaped jaws which protrude longitudinally from the lower inner circumferential surface of the cover along the opposite sides of the slit, respectively; a fastener which is formed to fasten the cover by being fitted onto the pair of jaws in order to maintain the slit in a closed state after the wire is covered with the cover, and has a tab integrated therewith, the tab being formed along the center line of the fastener and exposed out of the cover through the slit; and a pair of guards which are integrated with the cover and.

An adjustable cable support member includes a first track defining first and second channels extending in a longitudinal direction thereof, and a second track at least partially slidably received within the first and second channels of the first track in the longitudinal direction for enabling adjustment of the overall length of the cable support member. The first track and the second track define a cable receiving space extending continuously in the longitudinal direction over the length of the cable support member.