frp transmission structures by ara jt

FRP Transmission Line Structures

Presented

by

Janos TothPh.D.,P.E.,P.Eng.,PMP

ARA Engineering

Kopavogur (Reykjavik), Iceland

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ARA Projects

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Transmission Line, Substation and Underground Cable Projects in

• Iceland, Greenland, Norway, Sweden, Finland, Continental Europe

• Africa

• South-East Asia

• Canada

“Balerina”, Specialty Structure

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Driver for FRP Structures

• Aging Assets

• Aging Work Force

• Weigh Requirements for New Work Methods

• Forced Outages

• Material Availability

• Reliability/Limit State Based Design

• Energized Work Requirements

• Total Cost of Asset Ownership

• Environmental Regulations

• Public Safety

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What is FRP ?

Fiber Reinforced Polymer (FRP) Composite

• Fiber

• Resin

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+

Fibers

• Carbon

• Glass

• Aramid (Kevlar)

• Basalt

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Resin

• Thermoplastic, becomes pliable or moldable above a specific temperature and solidifies upon cooling

• Thermoset, soft solid or viscous liquid state that changes irreversibly into an infusible, insoluble polymer network by curing

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Main FRP Resin Systems

• Polyester

• Polyurethane

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Fillers and Additives to Resins

Fillers and Additives to Improve FRP Properties:

• UV inhibitors (UV protection)

• Fire inhibitors (Fire resistance)

• Flow improvement

• Abrasion resistance

• Weight improvement (fillers)

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Major Production Technologies Electrical Utility for FRP Structures

• Filament Winding

• Pultrusion

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Pultrusion

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FRP Pultruded Profiles

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Filament Winding

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Filament Winding Profiles

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FRP Structure Colors

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Brown Grey

Any color customer desires, Safety Orange, White, Green, Pink etc.

Major Color

FRP Structures

• Poles

• Cross arms

• Cross Braces

• Anchor Logs

• Grillage Foundations

• Lattice Structures

• Piles and Sheet Piles

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Advantages of FRP

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High dielectric strength

Enhances lineman and ground hand safety during live

line pole replacement sets. Mitigate safety concerns

using FRP poles and Cross Arms.

Advantages of FRP

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Environmentally inert

• No Chemicals leaching to the environment (Fish habitat areas,

drinking water supply areas etc.)

• Simple disposal if needed

Advantages of FRP

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Composite utility poles are manufactured with fire retardant

additives for optimal performance in the event of a brush or

pole top fire

Fire resistant

Advantages of FRP

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• Composite materials are an engineered product.

• The engineered pole is manufactured in a production plant and exhibits a

coefficient of variation of less than 5%.

• You get a stronger structure that will maintain its design strength over an

extended period of time.

• Why should you care? In 20, 30, 40 plus years the composite utility pole will

maintain 80% of its original strength. Therefore, grid reliability is highly

increased.

FRP Advantages

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Unaffected by Termites, Woodpeckers and Vermin

FRP Advantages

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Composite utility structures will not rot, spall or corrode

due to the environment.

FRP Advantages

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Light Weight

• 12 m long wood pole is

about 725 kg (1600 lbs)

• 12 m long 305 mm (12”) dia

FRP pole is 295 kg (650 lbs)

FRP AdvantagesCost effective

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FRP Advantages

• Electrically Insulating

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Installation Methods

• Same as with Wood, Steel or Concrete Structures

• Except lighter equipment could be used

• No conductive or inductive issues for live line work

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Poles

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• Pultruded

• Filament Winded

Octagonal Poles

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Round Poles

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Transportation of FRP

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Pole Climbing

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Jerol Composite Pole

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Climbing Poles

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Scandinavian Pole Climbing System

FRP Pole Climbing

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Step Bolts

Pole Foundations

• Direct embedded

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FRP Pole Foundation

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Barel with backfillRock

Tri-Anchor Foundation

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Boxed Cross Arms

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Box Cross Arm Torque Protection

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Channel H-Frame Cross Arm

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Hardware Connection

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Cross Bracings

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FRP Substation Support

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FRP 230 kV H-Frame

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Guy Structure

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Anchor logs

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Anchor Logs Inner Structure

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FRP Grillage Foundation

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FRP Piles and Sheet piles

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FRP Lattice Structures

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Design Guides and Codes

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• ASCE

• ASTM

• CIGRE B2.61

• CSA

• EUROCODE

Contact Information

Janos Toth, Ph.D.,P.E.,P.Eng., PMP

ARA Power Engineering Inc., Canada+1 (604) 671-4785

E-mail: [email protected]

http://araengineering.is/

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Questions

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