NKTCables Presentation OPGW&PPC&Accessories Lecture [PDF]

Zitiervorschau

OPGW / OPPC and Accessories

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OPGW / OPPC and accessories • nkt cables products • Optical fibres in general • Quality management • Accessories • References

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Complete OPGW / OPPC solutions

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OPGW / OPPC Optical Ground Wire (OPGW)

Metallic Aerial Self Supported (MASS) Optical Phase Conductor (OPPC)

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OPGW – What is it used for? •

Optical Ground Wire (OPGW) is used on overhead transmission- and distribution lines

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OPGW replaces the ground wire

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Functions of OPGW:

OPGW

1) Fault-current protection 2) Lightning protection 3) Communication

MASS

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OPPC – What is it used for? • Optical Phase Conductor (OPPC) based on the same cable technology as OPGW • Replacement of phase conductors • Functions of OPPC: 1) transport of energy 2) Communication

OPPC

3) Line Monitoring • Special accessories – termination units • Required to separate optical fibres from HV- to Zero-potential !!! • nkt cables supplies OPPC incl. accessories up to 420kV

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Headline

OPGW / OPPC Have to be resistant against stress of… • • • • • •

Installation Ice loads Temperature change Lightning impact Short circuit currents Wind loads

Therefore our OPGW / OPPC designs provide…

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Headline

Our design features •

High fibre excess length of approx. 5‰, to compensate high strain stresses in case of strong ice- or wind loads

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All materials are highly corrosion resistant

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High mechanical flexibility, avoiding long term fatigue and breaks of the wires and the optical fibre unit, in case of high vibration stress

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Headline

Our design advantages One to One replacement •

No reinforcement of tower static

High mechanical flexibility •

Easy installation

Wire characteristics as Ground/Phase – wire •

Allows exisiting tools for line engineering

High reliability like conventional ACSR •

Standard maintenance of transmission line

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OPGW / OPPC designs

Stranded tube design

Central ”light” tube design Stainless steel tube

Stainless steel tube

Optical fibres

Optical fibres

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Vertical integration / used standards Our production facilities comprise… • Fibre colouring • Drawing of aluminium wires • Manufacturing of stainless steel tube with optical fibres • Stranding • Test laboratories ...manufactured and tested according to latest international standards

EN 187 200 / IEC 794-4-1 / IEEE 1138

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Optical fibres (in a nuts shell) • Made of glass • Different optical density in core and cladding

Core Colouring

n2 n1 n2 Coating Cladding

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Fibres used in nkt cables designs All types of fibres can be integrated in our: • OPGW / OPPC designs

Used for long transmission distance: • “Singlemode step index fibres; SMF“ (G.652) • “Non Zero Disperion Shifted Fibres, NZDS“ (G.655)

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Headline

Transmission parametres of optical fibres Most important fibre characteristics are... Fibre attenuation causing loss of signal energy •

Transmission distance is limited

Dispersion causing spread of signal •

Transmission capacity via long distances is lower

State-of-the-art fibres •

Highest quality

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Lowest transmission limiting parametres

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Testing

• Quality • Check • System

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Our routine checks Before shipping all OPGW /OPPC are tested concerning: • Mechanical and electrical design parameters • Attenuation with OTDR (each fibre; 1310nm and 1550nm)

• Complete test documentation is presented to the customer • Full material and process tracebility

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Headline

Our environmental type tests Including all possible environmental stress events • Tensile tests • Temperature tests from - 45°C to + 80°C • Aeolean vibration test

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Our electrical type tests Consider all electrical impacts

• Short circuit test according to data sheet value of respective design

• Worst case lightning current

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Fittings and accessories

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OPGW joint box technology 2)

Made of an aluminium housing • highest resistance against - environmental stress - external impacts (e.g. shotgun) • with “Standard“ technique for up to 144 splices • or with fibre management for up to > 288 splices

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OPGW joint box technology 2)

• One hood joint for all OPGW designs and diameters • Quick and easy to install • Low installation cost • Reduced number of single components • Easy to order • No risk of missing components

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OPGW joint box tower fixing 2)

• Joint box tower fixing • Clamping for corner • Clamp bracket for diagonal • Clamping for tower pools

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OPPC - Accessories

OPPC termination unit FOC into Comms Room and OTS Controller (VALCAP)

Transmission Telcom OPPC

OPPC Straight Joint

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OPPC – Accessories – Termination units •

Available voltage levels of OPPC termination units: - 36 kV - 72,5 kV - 145 kV - 245 kV - 420 kV

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For the highest pollution severity level IV

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Fittings and mounting materials 2)

Our OPGWs / OPPCs are compatible with: • Spiral suspension and tension fittings • Standard clamp technology

We recommend: • To select the right fitting dimension with the respective supplier • To take care of the respective installation recommendations with respect to the selected installation material

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OPGW references

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OPGW / OPPC accessories references

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Thank you for your attention!

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