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Aust Severn Powerline Crossing
Aust Severn Powerline Crossing is the longest overhead power line span in the United Kingdom with a length of . History The crossing spans the River Severn between Aust and Beachley and is part of the National Grid. It was commissioned in 1959, and comprises two 275 kV electricity circuits, which form part of the 275 kV Iron Acton to Whitson line. Construction It is situated south of the Severn Bridge and was built by J. L. Eve Construction, which became Eve Group, and is now Babcock Networks. It is mounted on two pylons, each tall. The pylon on the Aust side of the River Severn stands on a caisson accessible via a small bridge. See also * List of spans * Powerline river crossings in the United Kingdom * Crossings of the River Severn * Crossings of the River Wye *Severn-Wye Cable Tunnel The Severn-Wye Cable Tunnel, also known as the Severn Cable Tunnel, carries high-voltage (400 kV) electricity transmission lines beneath the estuaries of the River Severn and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Spans
The following is a list of spans, either used for overhead line crossings of rivers, sea straits or valleys, as antenna or for aerial tramways. Powerline spans in flat areas with high pylons At these spans the sag of the conductors is less than the height of the pylons Powerline spans in mountainous areas requiring shorter pylons At these spans, the pylons are situated on the tops of mountains, so the topography determines the height of the lines. Because of this it is possible that the span pylons can be lower than the height of the line at point of largest sag. Antenna spans across valleys Aerial tramways Rope Tyroleans Other See also * Architectural structure Architectural engineers apply and theoretical knowledge to the engineering design of buildings and building systems. The goal is to engineer high performance buildings that are sustainable, economically viable and ensure the safety health. Archi ... * Timeline of three longest spans Referenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Grid (Great Britain)
In the electricity sector in the United Kingdom, the National Grid is the high-voltage electric power transmission network serving Great Britain, connecting power stations and major substations and ensuring that electricity generated anywhere on it can be used to satisfy demand elsewhere. The network covers the great majority of Great Britain and several of the surrounding islands. It does not cover Northern Ireland, which is part of a single electricity market with the Republic of Ireland. The GB grid is connected as a wide area synchronous grid nominally running at 50 hertz. There are also undersea interconnections to other grids in the Isle of Man, Northern Ireland, the Republic of Ireland, France, Belgium, the Netherlands and Norway. On the breakup of the Central Electricity Generating Board in 1990, the ownership and operation of the National Grid in England and Wales passed to National Grid Company plc, later to become National Grid Transco, and now National Grid plc. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Power Infrastructure In England
Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of an electric charge, which can be either positive or negative, produces an electric field. The movement of electric charges is an electric current and produces a magnetic field. When a charge is placed in a location with a non-zero electric field, a force will act on it. The magnitude of this force is given by Coulomb's law. If the charge moves, the electric field would be doing work on the electric charge. Thus we can speak of electric potential at a certain point in space, which is equal to the work done by an external agent in carrying a unit of positiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Powerline River Crossings
Powerline may refer to: Technology * Overhead power line, used for electric power transmission * Power-line communication, a computer networking technology * Powerline, a status line plugin for vim and other application; see Private Use Areas Music and media * ''Powerline'' (magazine), an American music magazine and website * Power Line, a political blog * "Power Lines", a 2016 single by TIGRESS * "Power Lines", a 2012 song by Reks from '' Straight, No Chaser'' * Powerline, a fictional singer in the ''A Goofy Movie ''A Goofy Movie'' is a 1995 American animated musical comedy-adventure film produced by Disney MovieToons and Walt Disney Television Animation. Directed by Kevin Lima, the film is based on The Disney Afternoon television series '' Goof Tro ...'' musical Sport * Powerlines F.C., South African soccer club {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Towers In Gloucestershire
A tower is a tall structure, taller than it is wide, often by a significant factor. Towers are distinguished from masts by their lack of guy-wires and are therefore, along with tall buildings, self-supporting structures. Towers are specifically distinguished from buildings in that they are built not to be habitable but to serve other functions using the height of the tower. For example, the height of a clock tower improves the visibility of the clock, and the height of a tower in a fortified building such as a castle increases the visibility of the surroundings for defensive purposes. Towers may also be built for observation, leisure, or telecommunication purposes. A tower can stand alone or be supported by adjacent buildings, or it may be a feature on top of a larger structure or building. Etymology Old English ''torr'' is from Latin ''turris'' via Old French ''tor''. The Latin term together with Greek τύρσις was loaned from a pre-Indo-European Mediterranean langua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Severn-Wye Cable Tunnel
The Severn-Wye Cable Tunnel, also known as the Severn Cable Tunnel, carries high-voltage (400 kV) electricity transmission lines beneath the estuaries of the River Severn and River Wye between Newhouse (Mathern), Monmouthshire and Aust, South Gloucestershire. History To exploit the generating capacity of new power stations being built in the late 1960s at Pembroke (2,000 MW) and Aberthaw ('A' 600 MW, 'B' 1,400 MW), the Central Electricity Generating Board (CEGB) planned to construct 400 kV supergrid lines through South Wales and Gloucestershire to National Grid connection points at Gloucester and Melksham, Wiltshire. The CEGB intended the line to Melksham substation to cross the River Severn at Sharpness using overhead cables. A public inquiry was held in 1967 and objections were raised by the Council for the Preservation of Rural England and several District and Parish Councils. The principal objection was to the impact of the power lines on the scenery of the Cotswolds and of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Crossings Of The River Wye
Crossings of the River Wye in the UK cover the whole length of the from its source to the River Severn. For much of its length the river forms part of the border between England and Wales. The lower Wye Valley is an Area of Outstanding Natural Beauty. There are some 15 Grade II listed bridges, one Grade II* listed bridge and three Grade I listed bridges. Crossings In order, moving downstream: See also *List of bridges in Wales *Wye Valley *Wye Valley Walk *List of crossings of the River Severn This is a list of crossings of the River Severn in Great Britain (including bridges, tunnels, ferries and fords), in order from source to mouth. The Severn has historically been a very important and busy river, and has been bridged throughou ... Notes External links {{DEFAULTSORT:Wye bridges Lists of bridges in the United Kingdom Wye Lists of coordinates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Crossings Of The River Severn
This is a list of crossings of the River Severn in Great Britain (including bridges, tunnels, ferries and fords), in order from source to mouth. The Severn has historically been a very important and busy river, and has been bridged throughout history. The bridges that stand today are often of great historical and/or engineering interest. For example, the world's first iron bridge, The Iron Bridge, built from cast iron, crosses the River Severn at Ironbridge Gorge. The Iron Bridge is one of three bridges on the River Severn that are listed as grade I structures, including Bewdley Bridge and the Severn Bridge, which was opened in 1966. In total, 31 bridges that cross the River Severn are listed, either grade I, II* or II. Four bridges are scheduled monuments, including The Iron Bridge, which are nationally important archaeological bridges. Many reaches of the Severn are prone to severe flooding, prompting the design of some unique bridges to cope with this. There were historic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Powerline River Crossings In The United Kingdom
Powerline river crossings comprise both overhead lines and cable tunnels beneath rivers and estuaries. Overhead power lines are supported on towers (called pylons in the UK) which are usually significantly taller than overland pylons and are more widely spaced to cross the river in a single span. Tall pylons ensure that the electricity cables which they support provide an adequate safety clearance for river traffic. Overhead crossings The tallest and longest overhead power line river crossings in the United Kingdom are: The tallest electricity pylons in the UK are those of the 400 kV Thames Crossing, at West Thurrock, which are 190 m (630 ft) high. These were constructed by BICC in 1965. The cables stretch 1300 m (4,500 ft) across the River Thames and have a minimum clearance of 76 m (250 ft). There are two 400 kV circuits that connect Littlebrook substation on the south bank to West Thurrock substation on the north side. The longest powerline riv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pier To Pylons Where The National Grid Crosses The River Severn - Geograph
Seaside pleasure pier in England.html" ;"title="Brighton, England">Brighton, England. The first seaside piers were built in England in the early 19th century. A pier is a raised structure that rises above a body of water and usually juts out from its shore, typically supported by piling, piles or column, pillars, and provides above-water access to offshore areas. Frequent pier uses include fishing, [oat docking and access for both passengers and cargo, and oceanside recreation. Bridges, buildings, and walkways may all be supported by architectural piers. Their open structure allows tides and currents to flow relatively unhindered, whereas the more solid foundations of a quay or the closely spaced piles of a wharf can act as a breakwater, and are consequently more liable to silting. Piers can range in size and complexity from a simple lightweight wooden structure to major structures extended over . In American English, a pier may be synonymous with a dock. Piers have been b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beachley Pylon
Beachley is a village in Gloucestershire, England, near the border with Monmouthshire, Wales. It is located on a peninsula at the confluence of the rivers Wye and Severn, where the Severn Bridge ends and the smaller secondary bridge over the River Wye begins, both bridges carrying the M48 motorway between England and Wales though the motorway is not directly accessible from the village. The tidal range on this stretch of water is the highest in the UK. Before the construction of the bridge it was a ferry port from where the Aust Ferry operated until 1966.The population in 2011 was 764. History Before the 9th century, the Beachley peninsula and the mouth of the Wye were part of the Welsh kingdom of Gwent. A small chapel was founded at what was then the southernmost point of the peninsula - now a tidal island known as Chapel Rock - traditionally in the 4th century by Tecla, a princess of Gwynedd who retired there as a hermit before being murdered by raiders from the sea. A chapel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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