In 2017, global revenue of optical ground wire opgw is nearly 535. Opgw optical ground wire aluminum clad steel tube on. Optical ground wire opgw market 2020 global industry. 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. 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. Remove kevlar, water blocking tape, and all filler tubes. Cut flex tubes to desired length and insert over loose tubes. Robotised system to install fibre optic cables on ground wire or phase conductor of electrical lines. Afl telecommunications is the worlds leading supplier of optgw. Loose tube optical ground wireopgw optical ground wireopgw. The first one is the conventional role as electrical ground wire, the second one is to create a communication system by its optical fibre. Adss fiber cableopgw fiber cablefigure 8 fiber cableksd. Optical ground wire is a dual functioning cable, meaning it.
Optical ground wire ohsw repair rods preformed line products. Prysmian offers its customers a broad range of fiber optic cables for overhead cable networks. Alumacore optical ground wire opgw is a dual purpose cable. Best solution in old ground wire replacement and in new line. Generally opgw provide a dual role in the transmission overhead lines. 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. Optical ground wire with capacity for 48 opgw 64m60z optical. 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. Thermal resistance of optical ground wire to direct lightning strike. Position the comealong a minimum of 10 feet from the dead end being installed. Isolating the opgw from the substation ground grid at both ends reduced worstcase opgw current from 24. A case study on the appropriate selection of optical ground.
Opgw must be capable of withstanding the mechanical stresses applied to overhead cables by environmental. Aug 24, 2015 jon potter, product manager, talks about our optical ground wire opgw. In addition you dont have to bury the fibre instead you. 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. But today, we use opgw as shield wire sky wire ground wire. An opgw cable contains a tubular structure with one or more optical fibers in it, surrounded by layers of steel and aluminum wire.
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. Related to servicing optical fiber telecommunication circuits in optical ground wire opgw final project report project team richard g. The cable was deployed in the field for nine years in southern wisconsin. This includes optimizing diameter, weight, breaking strength and short circuit capacity. Pdf performance testing of an optical ground wire composite. Earlier we used shield wire sky wire ground wire for protecting the high voltage phase wires form lightening strikes on the transmission tower. Youll save both time and money as the cable contains both optical fibres and electrical conductors. Such cable combines the functions of grounding and communications. Afl telecommunications is the worlds leading supplier of opgw. 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. Tian xin second industrial park,shangwu street,shangwu community,shiyan street,baoan district,shenzhen,guangdong. Alumacore optical ground wire opgw is a dual purpose.
Fieldaging study shows strength of optical ground wire. Opgw optical ground wire transmission lines design and. Benefits installs as a normal ground wire with conventional machinery. These repair rods will provide varying levels of mechanical and electrical repair depending upon the specific construction, stranding and material of the opgw. Pdf in the research, measurements of polarisation mode dispersion of two opgws optical ground wire transmission lines, in total four fibres. 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. Fibres are normally g652 or g655, and all fibres inside a steel tube has unique identification. Evaluation of fibre lifetime in optical ground wire. The aluminium tube is surrounded by a single or double layer of alu minium clad steel wires acs or a mix of acs. The optical fibre are inside a stainless steel tube. The opgw cable are located at the ends of highvoltage pylons.
It is designed to replace traditional static shield earth wires on overhead transmission lines with the added benefit of containing optical. Specification for installation of optical ground wires. An optical ground wire is a type of cable that is used in overhead power lines. Optical ground wires with capacity up to 96 optical fibres opgw. This specification covers optical ground wire cables opgw for the installation on high voltage overhead power lines. Both operators and power utilities recognize that opgws have become a key factor in telecommunication networks. The cables under consideration were installed in 1995 and 2011, respectively. Both operators and power utilities recognize that opgws have. The specification describes the basic design of an opgwcable with its main components.
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 wires with capacity up to 96 opgw optical fibres. 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 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. 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. A standard designs transmission typical details for optical ground wire splice structures 110. The cable contains optical fibers for data transmission and telecom purposes and is installed instead of a ground wire. The first step to verifying conductor shortcircuit protection is to calculate the shortcircuit current fault levels throughout the electrical system. 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.
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. An opgw cable has the dual performance functions of a ground wire with telecommunications capabilities. Pdf an optical ground wire opgw composed of different materials was presented in detail before delivering the product to the communication and. Oca series comealongs for optical ground wire unused comealongs 1. Based on this conclusion, the diameter of opgws should be around 18. 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. Optical core is made of optical fibers 1 covered by one or more loose buffer tubes 2 that leave the. Loosen bolts so that the comealong may be opened sufficiently. Pdf evaluation of fibre lifetime in optical ground wire. Opgw optical ground wires optical characteristics an opgw typically consists of 24 144 fibres inside 1 3 laser welded steel tubes. Reliable optical solution for fiber optic utilities.
Pdf mechanical and optical functionality of fieldaged. Specification for installation of optical ground wires opgw. Optical ground wire provides two products in one design. 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.
A tutorial on optical ground wire ratings analysis for. The conclusive evidence that the optical ground wire isolated descents from the end towers of the line give the possibility of reducing the level of maximal fault current distribution values in it. Cut central strength member at about 6 15cm from the end of the jacket 11. Acs aluminium clad steel, aluminium alloy and aluminium commercially pure wires should be. Optical ground wire opgw is a dual functioning cable. Opgw optical ground wire single stainless steel tube on. Ieee182009 ieee standard for testing and performance for optical ground wire opgw for use on electric utility power lines iec 61232 aluminum clad steel wire for electrical purposes iec 60104 aluminum magnesiumsilicon alloy wire for overhead line conductors. Opgw is a dual functioning cable performing the duties of a ground wire and also providing a patch for. A simple check for damage in shipment can be made by visually inspecting the lagging. Personnel grounding and safety issuessolutions related to.
Opgw must be capable of withstanding the mechanical stresses applied to overhead cables. Specification for installation of optical ground wires opgwoppc revision. 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. Optical ground wire opgw is a type of cable used in the construction of electric power transmission and distribution lines. Pdf thermal resistance of optical ground wire to direct. 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. Optical ground wire, optgwaerial cable, optgw, optgw. Juho ylihannuksela the transmission line cost calculation. 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. The overhead earth wire is being replaced with the optical fiber ground wire to enhance safety and protection of individuals in close proximity of the system. Mechanical and optical functionality of fieldaged optical ground wire cable. 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.
Optical ground wire opgw is a dual functioning cable, meaning it serves two purposes. Adss fiber cableopgw fiber cablefigure 8 fiber cableksd cable. Optical ground wire opgw market 2020 driven increasing. Optical ground wire is a dual functioning cable, meaning. 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. Dec 03, 2019 in 2017, global revenue of optical ground wire opgw is nearly 535. This cable combines grounding and data transmission functions. This structure has the double function of ground wire and communication, commonly known as opgw optical cable. Feb 27, 2020 press release optical ground wire opgw market 2020 driven increasing demand and opportunity assessment, 20202024 published. This standard covers the performance, test requirements, procedures, and acceptance criteria for a transmission line overhead ground wire a. Discussed in the video are opgws applications and what type might be best for your project. Olsen washington state university sakis meliopoulos georgia institute of technology george karady arizona state university pserc publication 0235 october 2002. Optical ground wire, or opgw, includes communication functions provided by the.
The information contained within this document must not be copied, reprinted or reproduced in any. B standard designs transmission lines typical details for dead end tees 109. Check for cleanliness of bore and permit cable entry into the cable groove. Mark and remove inner jacket at about 5 cm from bond clamp.
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