2GW OPGW_live Line Installation Elsewedy [Compatibility Mode]

2G/W OPGW Live-Line Installation2G/W OPGW Live Line Installation

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Contents:

•• OPGW System OverviewOPGW System OverviewOPGW System OverviewOPGW System Overview•• LiveLive--Line InstallationLine Installation•• LiveLive--Line Installation MethodLine Installation MethodLiveLive--Line Installation MethodLine Installation Method•• LiveLive--Line Installation MethodLine Installation Method

under Non GW Conditionunder Non GW Conditionunder Non GW Conditionunder Non GW Condition•• Safety EvaluationSafety Evaluation•• PicturesPictures•• PicturesPictures

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OPGW System Overview OPGW System Overview OPGW System Configuration

OPGW system makes a nationwide communication network possible b d th h d t d t t itbased on the overhead systems used to transmit power.

Tower FittingOPGW

Suspension Tower

Tension Tower

Gantry Tower

Optical Terminal Equipment

J i tTransmission Solar Power

J i tJoint box

Line Cell Array plant

Optical

Joint box

Joint Enclose for Underground

Non-MetallicOptical Fiber Cable

OpticalRepeater

UndergroundShelter

Battery &Controller

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< Terminal Station > < Repeater Station > < Terminal Station >

OPGW System Overview OPGW System Overview Application of OPGW

G d WiGround Wire

Communication between Power Systems

Monitoring and Controlling of Power System

Data Transmission with Large Capacity and High Speed

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ELSEWEDY LiveELSEWEDY Live--Line InstallationLine Installation

The Necessity of Live-Line InstallationActive internet marketActive internet marketDemands for replacement of existing GW to OPGWInsufficiency of electric power capacityy p p y

Live-Line Installation MethodFull Live-Line InstallationEnsure safety for workers and transmission line by using Safety Analysis Programusing Safety Analysis ProgramGuarantee high quality and easy access of installation equipment

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LiveLive--Line installation ProcessLine installation Process

Replacing the existing ground wire by OPGW without power outage on double Replacing the existing ground wire by OPGW without power outage on double circuit transmission linecircuit transmission line

PROCEDURE

PreparationPreparation

Installation of Supporting rollers

OPGW stringing

Turn-over & Sagging

Retrieval of Support rollers and the disconnecting ropethe disconnecting rope

Jointing & Testing

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LiveLive--Line installation MethodLine installation Method Major Equipment

Guide Rope-. Nominal diameter : 10mm-. Max. Breaking strength : 2ton

Pulling Rope-. Nominal diameter : 14mm-. Max. Breaking strength : 4ton

Supporting Roller-. Length : 350mm-. Roller diameter : 36mm-. Roller material : Aluminum

-. Running speed. 30 m/min

Mobile UnitRecovery Machine

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g p-. Climb angle. maximum 31 degrees-. Weight. 34g

-. Load limit : 12㎏f or more60㎏f or more

LiveLive--Line installation MethodLine installation Method Accessories

Swivel

Dead-end Stocking

Pulley Block

Earthing Roller

Drum Stand

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Engine Winch

LiveLive--Line installation MethodLine installation Method Accessories

Vibration Damper

Tension Assembly Set

Suspension Assembly Set

Fixing ClampJoint Box

www.elsewedy.com Tension Tower Tension Tower Suspension Tower Tension Tower

LiveLive--Line installation MethodLine installation Method Preparation

Install OPGW drum with stand at the drum field and puller at the engine field.

Preparative equipment, fittings along the situation of working field.Th t i i bl k b tt h d t th t d b tt t f tThe stringing block be attached at the top and bottom part of tower.

Ch k h l b i i d i d li li b fCheck the clearance between existing ground wire and live-line before stringing.

The exercise been already done and recorded during the survey ground wire condition must be check again prior to start of installation.condition must be check again prior to start of installation.

Remove the existing aerial spheres and vibration damper etc.Intervals of 10~20m to be maintained between supporting rollers.

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LiveLive--Line installation MethodLine installation Method Installation of supporting roller

Install supporting rollers using a mobile unit between spans. The mobile unit be shifted fromhigher tower to lower tower.

Install supporting rollers on the top of the towerInstall supporting rollers on the top of the tower.

Existing Ground wire

Mobile Unit

Supporting RollerPulling RopeGuide Rope

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LiveLive--Line installation MethodLine installation Method OPGW Stringing

Fixing of supporting roller between towers by guide rope

Use swivel(2ton) for connecting OPGW

OPGW Stringing by using engine puller and reel winder (Pulling Tension Max.500kg)

Existing Ground wire

Guide Rope

Pulling RopeOPGW

Swivel

Pulling Rope

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LiveLive--Line installation MethodLine installation Method Turn-Over & Sagging

Upset the OPGW at the position of exist ground wire using chain block tension equipment.

Chain blockGround Wire

OPGW

OPGWCome-along

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LiveLive--Line installation MethodLine installation Method Remove exist ground wire

Connect pulling rope to end of ground wire, and then withdraw ground wire.

G id R

OPGW

Guide Rope

Pulling Rope

Existing Ground wire

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LiveLive--Line installation MethodLine installation Method Retrieving supporting roller

Regain the pulling rope and supporting rollers to opposite direction between each span.

Retreat the pulling rope on ground by pulling the Pulling rope with uniform speed by manpower.Retreat the pulling rope on ground by pulling the Pulling rope with uniform speed by manpower.

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Safety EvaluationSafety Evaluation

Investigation of Tower & G.W conditions

S f t d t f kSafety gadgets for workmen

Fixing of warning Flags

Grounding of equipmentGrounding of equipment

Clearance between Mobile unit and Conduct, OPGW and Conduct

Minimum Clearance Distance for Live Line

Safety Evaluation by Simulation Program

Electrostatic Induction

Electro magnetic Induction

Dry Band Arcing Phenomenon

Dynamic Sag/Tension during Installation

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Safety Evaluation Safety Evaluation Minimum Clearance Distance(ex.malaysia)

Bare hand Maintenance

Minimum Clearance Distance for Live Line

Voltage WorkingBare hand Maintenance

132kV 2440

Phase to Ground Phase to Phase

1067 1524132kV 2440mm

275kV 3050mm

500kV 3700mm

1067mm

1740mm

3030mm

1524mm

4000mm

6096mm500kV 3700mm 3030mm 6096mm

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Safety Evaluation Safety Evaluation Span Length of Supporting Roller(ex.malaysia)

1.4591.3361.2751.1531.0911.030.9080.8460.790.660.540.480.36D

201817151413111097542S [m]

Sag Value in Accordance with Span Length

8.2347.4347.0346.2345.8345.4344.6344.2343.833.032.231.831.03D”(S'=S*80%)

10.239.2348.7347.7347.2346.7345.7345.2344.733.732.732.231.23D’(S'=0)

1.4591.3361.2751.1531.0911.030.9080.8460.790.660.540.480.36D

S’

S10m 0m

D D’ OPGW or Rope7.55m

0.846 0.710

Minimum Clearance (1.74m)

4.964

D”

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Minimum Clearance (1.74m)D

[ Span length for 275kV T/L (Tower Type 24LA) ]

Safety Evaluation Safety Evaluation Grounding from Inducing Voltage

During stringing operation, all OPGW shall be grounded by using ground roller.

[ Ground Roller]

OPGW Drum

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Safety Evaluation Safety Evaluation Dry Band Arcing In Rope

Dry band arcing phenomenon occur by potential differencealong the insulation rope during installation process This phenomenon can be estimated by programand can be prevented by allocating supporting rollers

Arc occurp y g pp g

Dry BandBurning of

rope occurs in

Wet Wet Rope

rope occurs in this region by

Tracking

Potential

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Leakage Current