Optical core is made of optical fibers 1 covered by one or more loose buffer tubes 2 that leave the fibers free from strain even at highest operating loads. Cut flex tubes to desired length and insert over loose tubes. Opgw must be capable of withstanding the mechanical stresses applied to overhead cables by environmental. Its small profile offers an exceptional solution to the diameter and weight concerns on many of todays overloaded transmission towers where an existing shield wire needs to. Fieldaging study shows strength of optical ground wire. Cut central strength member at about 6 15cm from the end of the jacket 11. The aluminium tube is surrounded by a single or double layer of alu minium clad steel wires acs or a mix of acs. Recommended installation procedures for composite optical ground wire installation instructions for installing optical ground wire in an afl telecommunications splice enclosure fiber optic cable receiving, handling and storage. Pdf mechanical and optical functionality of fieldaged. In 2017, global revenue of optical ground wire opgw is nearly 535. B standard designs transmission lines typical details for dead end tees 109.
Benefits installs as a normal ground wire with conventional machinery. Mechanical and optical functionality of fieldaged optical ground wire cable. Optical ground wire ohsw repair rods preformed line products. Adss fiber cableopgw fiber cablefigure 8 fiber cableksd. These repair rods will provide varying levels of mechanical and electrical repair depending upon the specific construction, stranding and material of the opgw. Optical ground wire provides two products in one design. The specification describes the basic design of an opgwcable with its main components. Optical ground wire, or opgw, includes communication functions provided by the. The fibre are protected inside the tube by a special thixotropic gel which works to the standard temperature requested for this type of ground wire. Optical ground wire is a dual functioning cable, meaning it. Personnel grounding and safety issuessolutions related to. A standard designs transmission typical details for optical ground wire splice structures 110.
Position the comealong a minimum of 10 feet from the dead end being installed. Optical ground wire with capacity for 48 opgw 64m60z optical. It is designed to replace traditional static shield earth wires on overhead transmission lines with the added benefit of containing optical fibers which can be used for telecommunications purposes. Reliable optical solution for fiber optic utilities. Best solution in old ground wire replacement and in new line. Olsen washington state university sakis meliopoulos georgia institute of technology george karady arizona state university pserc publication 0235 october 2002. Afl telecommunications is the worlds leading supplier of opgw. Loose tube optical ground wireopgw optical ground wireopgw.
The cable was deployed in the field for nine years in southern wisconsin. Remove kevlar, water blocking tape, and all filler tubes. This includes optimizing diameter, weight, breaking strength and short circuit capacity. A case study on the appropriate selection of optical ground. An optical ground wire also known as an opgw or, in the ieee standard, an optical fiber composite overhead ground wire is a type of cable that is used in overhead power lines. Pdf an optical ground wire opgw composed of different materials was presented in detail before delivering the product to the communication and. Pdf evaluation of fibre lifetime in optical ground wire. In addition you dont have to bury the fibre instead you. A tutorial on optical ground wire ratings analysis for. Isolating the opgw from the substation ground grid at both ends reduced worstcase opgw current from 24.
An optical ground wire is a type of cable that is used in overhead power lines. Optical ground wires with capacity up to 96 opgw optical fibres. Optical ground wires with capacity up to 96 optical fibres opgw. Alumacore optical ground wire opgw is a dual purpose.
These opgw repair rods are not designed or tested as splices for use on allmetal overhead shield wire and are not intended for that application. Opgw is a dual functioning cable performing the duties of a ground wire and also providing a patch for. Optical ground wire optgw is a dual functioning cable that performs the duties of a ground wire also known as static wire while providing a path for the transmission of voice, video or data signals by incorporating optical fibers into the design of the cable. Acs aluminium clad steel, aluminium alloy and aluminium commercially pure wires should be. The first one is the conventional role as electrical ground wire, the second one is to create a communication system by its optical fibre. Mark and remove inner jacket at about 5 cm from bond clamp. Thermal resistance of optical ground wire to direct lightning strike.
Alumacore optical ground wire opgw is a dual purpose cable. The basic design of nsw brands opgws includes optical fibers placed inside a central aluminum buffer tube, which is armored by one or more layers of wire to provide tensile strength and additional conductivity. The opgw cable are located at the ends of highvoltage pylons. Related to servicing optical fiber telecommunication circuits in optical ground wire opgw final project report project team richard g. Optical ground wire opgw is a revolutionary solution that enables synergies between efficient power distribution grids and high speed optical fiber based supervisory control and data acquisition scada networks, giving power utility companies the unique capabilities of a telecom carrier or service provider. Opgw optical ground wires optical characteristics an opgw typically consists of 24 144 fibres inside 1 3 laser welded steel tubes. A simple check for damage in shipment can be made by visually inspecting the lagging. Adss fiber cableopgw fiber cablefigure 8 fiber cableksd cable. It is designed to replace traditional static shield earth wires on overhead transmission lines with the added benefit of containing optical. Robotised system to install fibre optic cables on ground wire or phase conductor of electrical lines.
This cable combines grounding and data transmission functions. Pdf in the research, measurements of polarisation mode dispersion of two opgws optical ground wire transmission lines, in total four fibres. Oca series comealongs for optical ground wire unused comealongs 1. Loosen bolts so that the comealong may be opened sufficiently. Optical power ground wire for transmission applications overview prysmians purecore opgw cables are typically customdesigned to best match the optical, electrical, mechanical, quality and cost requirements of each individual project. Optical ground wire opgw or optgw is a dual functioning cable that performs the duties of a ground wire also known as static wire while providing a path for the transmission of voice, video or data signals by incorporating optical fibers into the design of the cable. Afl telecommunications is the worlds leading supplier of optgw. Optical ground wire, optgwaerial cable, optgw, optgw. Tian xin second industrial park,shangwu street,shangwu community,shiyan street,baoan district,shenzhen,guangdong. Evaluation of fibre lifetime in optical ground wire. An opgw cable contains a tubular structure with one or more optical fibers in it, surrounded by.
Optical ground wire opgw market 2020 global industry. An opgw cable contains a tubular structure with one or more optical fibers in it, surrounded by layers of steel and aluminum wire. Such cable combines the functions of grounding and communications. Optical ground wire opgw is a type of cable used in the construction of electric power transmission and distribution lines. The optical fiber is placed in the ground line of overhead high voltage transmission line and used to form the optical fiber communication network on the transmission line. Dec 03, 2019 in 2017, global revenue of optical ground wire opgw is nearly 535. Optical core is made of optical fibres 1 covered by small pbt loose buffer tube 2 that leaves the fibres free from strain even at highest operating loads.
Aug 24, 2015 jon potter, product manager, talks about our optical ground wire opgw. Both operators and power utilities recognize that opgws have. An opgw cable has the dual performance functions of a ground wire with telecommunications capabilities. This structure has the double function of ground wire and communication, commonly known as opgw optical cable. Juho ylihannuksela the transmission line cost calculation. The optical fibre are inside a stainless steel tube. The first step to verifying conductor shortcircuit protection is to calculate the shortcircuit current fault levels throughout the electrical system. Opgw optical ground wire single stainless steel tube on. Optical ground wire opgw is a dual functioning cable, meaning it serves two purposes. The information contained within this document must not be copied, reprinted or reproduced in any. In the research, measurements of polarisation mode dispersion of two opgws optical ground wire transmission lines, in total four fibres, have been carried out, and the expected lifetime of the infrastructure has been assessed on the basis of these measurements. Opgwoptical ground wire optical ground wire, or opgw, includes communication functions provided by the incorporated optical fibers in addition to the existing overhead ground wire which protects the transmission cables from lightning strikes and secures current flow in case of cable faults.
Generally opgw provide a dual role in the transmission overhead lines. Prysmian offers its customers a broad range of fiber optic cables for overhead cable networks. Earlier we used shield wire sky wire ground wire for protecting the high voltage phase wires form lightening strikes on the transmission tower. Optical ground wire opgw is a dual functioning cable.
Specification for installation of optical ground wires. Opgw optical ground wire aluminum clad steel tube on. Specification for installation of optical ground wires opgw. Taking the xiangjiaba shanghai project as an example, in order to meet the requirements on corona of ground wires, the diameter of the ground wire should be around 18. An optical ground wire opgw, essentially a lightning shield conductor containing one or more fiber optic cables, would seem to present a costeffective means of adding a broadband communications path to a transmission line that already requires a shield conductor for lightning protection. Optical ground wire opgw market 2020 driven increasing. But today, we use opgw as shield wire sky wire ground wire. Optical ground wire, or opgw as it is commonly referred to, serves as a ground wire and a telecommunications link at the same time. Optical ground wire is a dual functioning cable, meaning. The next step is to check the shortcircuit current rating of wire and cable, based upon the calculated shortcircuit fault current available and the overcurrent protective device selected. Optical core is made of optical fibers 1 covered by one or more loose buffer tubes 2 that leave the. Pdf performance testing of an optical ground wire composite. Both operators and power utilities recognize that opgws have become a key factor in telecommunication networks. The cable contains optical fibers for data transmission and telecom purposes and is installed instead of a ground wire.
Youll save both time and money as the cable contains both optical fibres and electrical conductors. Opgw optical ground wire transmission lines design and. The cables under consideration were installed in 1995 and 2011, respectively. Pdf thermal resistance of optical ground wire to direct. Opgw optical ground wire with a stainless steel central tube is preferred for its compact size and ability to house up to 72 fibers in a diameter starting at only 12mm. This standard covers the performance, test requirements, procedures, and acceptance criteria for a transmission line overhead ground wire a. This specification covers optical ground wire cables opgw for the installation on high voltage overhead power lines.
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