公开(公告)号：US20250158373A1

公开(公告)日：2025-05-15

申请号：US18860919

申请日：2023-02-06

Applicant: Terna S.p.A.

Inventor： Roberto SPEZIE ,  Francesco PALONE ,  Luciano ZUCCOLO ,  Maria Rosaria GUARNIERE

IPC: H02G7/00

Abstract: An overhead power line, in particular for medium and high voltage, comprising a five-phase power line, for a given number of conductors, and a plurality of pylons. Each of the pylons comprises a head portion to which the five electrical phases are fixed by means of their respective five attachment points, and a ground support portion fixed to the head portion. The five attachment points comprise four external attachment points arranged at the vertices of a quadrilateral and vertically misaligned with each other, and one internal attachment point arranged within the quadrilateral and vertically misaligned with the external attachment points. Each of the attachment points is of the suspension type supported by a pair of insulator chains arranged in a “V” or “L” shape and fixed to the head portion.

公开(公告)号：US20240235200A1

公开(公告)日：2024-07-11

申请号：US18560123

申请日：2022-05-10

Applicant: Terna S.p.A.

Inventor： Francesco PALONE ,  Luca BUONO ,  Marco PIETRUCCI

IPC: H02J3/30 ,  H02P9/00 ,  H02P103/10

CPC classification number: H02J3/30 ,  H02P9/007 ,  H02P2103/10

Abstract: The invention relates to a system for supporting the stability of an electrical grid by storing/releasing electrical energy from/to said electrical grid, comprising: an asynchronous electric machine including a rotor provided with an accessible rotor circuit and a stator provided with a stator circuit; a flywheel coupled to the rotor; a static converter, and electronic control means. The stator circuit is connected to the electrical grid to be fed by the latter. The static converter is connected between the electrical grid and the rotor circuit and is controllable to supply said rotor circuit with an electrical power supply with adjustable frequency and voltage. The asynchronous electric machine is configured to: absorb electrical energy from the electrical grid by converting the absorbed electrical energy into kinetic energy and storing said kinetic energy by means of the flywheel; and deliver electrical energy to the electrical grid by converting the stored kinetic energy by means of the flywheel into electrical energy and providing the latter to the electrical grid. The electronic control means are configured to: receive measurement data indicative of a measured electrical grid frequency; determine, based on the received measurement data, ROCOF values indicative of a derivative of the measured frequency of the electrical grid; and control the operation of the static converter based on the determined ROCOF values. Furthermore, in case of a change in the frequency of the electrical grid, the asynchronous electric machine is configured to immediately provide an uncontrolled natural inertial response to said change in frequency by absorbing active power from the electrical grid in case of an increase in frequency or by supplying active power to the electrical grid in case of a reduction in frequency; and the electronic control means are configured to determine a given ROCOF value relative to said change in frequency and, once said given ROCOF value has been determined, begin to control the operation of the static converter such that the asynchronous electric machine begins to supply a controlled synthetic inertial response wherein the active power absorbed/supplied is modulated according to the given ROCOF value determined and the uncontrolled natural inertial response already provided.

公开(公告)号：US20240195088A1

公开(公告)日：2024-06-13

申请号：US18285267

申请日：2022-03-31

Applicant: Terna S.P.A.

Inventor： Roberto SPEZIE ,  Francesco PALONE ,  Luca BUONO ,  Maurizio CARBONE ,  Piero MALTI

IPC: H01R4/66

CPC classification number: H01R4/66

Abstract: The invention relates to a grounding system for a tower of an overhead power line, wherein said tower is anchored to the ground by means of one or more anchorage structures (1) at least partially buried. The grounding system is buried and comprises: a first electrically conductive ring-type grounding element (21) which is buried at a first predefined depth, extends horizontally around the anchorage structure (s) (1) of the tower and is electrically connected to the tower; a second electrically conductive ring-type grounding element (22) which is buried at a second predefined depth greater than the first predefined depth, extends horizontally around the anchorage structure (s) (1) of the tower, is larger than the first ring-type grounding element (21) and is electrically connected to the first ring-type grounding element (21) by one or more grounding conductors (24, 26, 28); and one or more micropiles (23, 25, 27, 54) which are electrically connected to the second ring-type grounding element (22), extend vertically or obliquely downwards from said second ring-type grounding element (22) and are configured to act as deep earthing elements.