ohl submarine - ea technology · 2017-08-04 · offshore demonstrator wind farm project in uk...

OHL

AC Cable

DC Cable

Submarine

HVAC Innovative Applications

Focus on reliability and safety

From high energy city links to regional reinforcements

John Owen

Business Development Manager

Nexans - Land High Voltage BL, UK

Mobile: +44 (0) 7825 620518

Email: [email protected]

Growing demand for power transmission in megacities

Full range of 500kV accessories qualified

Low Fire Hazard cables acc. IEC and CPR

Protecting people’s lives and your assets

Reducing spread of fire and low corrosive smoke

Unique mechanical properties of LFH outer sheath

TUNNEL APPLICATIONS up to 500kV

Extra High Voltage Intra-City power link

3 I Nexans High Voltage Energy Transmission 2017

TEPCO,

Tokyo 2016

150-400kV PARTIAL UNDERGROUNDINGBring OHL underground in residential areas

4 I

To bypass cities or OHL critical areas to reduce visual impact

Extra High Voltage Cable system with high performance

conductors

Speed up permitting phase and safe copper costs (Cu enameled)

Stevin, Belgium: High energy underground cable meets safe and high

performance LO-SAG® OHL conductor

Raesfeld, Germany: Successful partial undergrounding

implementation

BEWAG 2, Berlin is powered since 1997

Nexans High Voltage Energy Transmission 2017

132-220kV OFF and ONSHORE

Windfarm export cable systems


From initial study to turnkey principal contractor delivery

Front End Engineering Design

Submarine and underground land connections

Geotechnical surveys

Installation & HSE Engineering

Lead free system design with low overall TCO

Alu solid / segmented conductors

Laser welded aluminum sheath

ECONOMIC CABLE SYSTEMSREGIONAL REINFORCEMENT AND MOVING OHL UNDERGROUND

Customized lead free HV Cable systems

Alu solid or alu segmented conductors

Copper segmented conductors

Copper or alu screen

Al-foil or alu laser welded sheath

LZH / SC layer outer sheath

Fiber Optic for asset diagnostics

Full set of Nexans accessories qualified

6 I Footer can be personalized as follow: Insert / Header and footer I Date

Fluid or gas pressured cables can be replaced using existing pipe

Reduces civil works, only open of old joint bay

In most cases improvements of power capacity

Type Tested up to 245kV including joints and terminations

245kV dry transition joint pipe type to XLPE qualified

XLPE PIPE TYPE CABLES

Replacing High Pressure Paper Cables


New Innovative Accessories

Safety first: Flexible FMS /

Anti-Explosion FRX

And new 72.5kV product range

SELF SUPPORTING DRY TERMINATION

FMS - For environment and safety

Fully dry type termination Type Tested up to 170kV

Increased safety and environmental friendly

- No oil or gas

- No risk of leakage

- No risk of heavy explosion

- Replace fluid filled terminations

One piece slip-on silicone rubber part

Easy and safe assembly on the ground

- No scaffolding

- Lift up on the structure

- Low installation cost


ANTI-EXPLOSION TERMINATIONS FRX

Safety of people and assets is key


No flying solid parts in case of internal arc

Tested with oil filled termination 170, 245 and 420kV

Tested with gas filled termination 420kV

Tested gas filled up to 63kA/0.3s and oil 50kA/0.5s

20160405_144944 - Rotation.mp4

HIGH PERFORMANCE

OVERHEAD LINES

Uprate your transmission network

90 – 500kV High capacity conductors to improve

your grid

Aero-Z® compact conductors optimize new or existing

OHL by better filling ratio and minimizing wind loads

ACSS high temperature conductor with steel core

increases grid reliability and solving emergencies

LO-SAG ® with composite core conductor reduce sag

and weight, dispatching more energy or reducing line

losses and avoid modifying existing towers

HIGH PERFORMANCE OVERHEAD LINESMore energy or less losses on same tower



Power loss reduction / increased ampacity

Unique limited corrosion

Lower visual impact, green coloured

Sound reduced, lower noise if raining

-17°C avg.

corrosion pits

ACSR

ACSS & AERO-Z treated

OHL PLUS surface treatmentAdditional performance for all conductors

High Voltage ServicesOutstanding Project, Installation

and HSE Management

From Logistics to Customized Services with safety as highest priority

Highly skilled and experienced project managers following common

processes across all project organisations

From installation services and site tests to full turnkey

Dedicated Project Managers with full responsibility and priority on

QHSE plans, confined space instructions and emergency procedures

EXPERIENCED PROJECT MANAGEMENT

Available Worldwide


AWARD WINNING INSTALLATION TEAM

Outstanding HSE performance

Site support and installation of accessories - highest quality

and on time

Follow approved QHSE plans, instructions and installation

manuals

One of the world’s most highly trained HV installation team

ensures reliability

On and Offshore with all necessary health and safety

certifications

Personalised safety training on-site and in training centers

Service contracts provide 24/7 hotline, spare parts and jointers

in emergencies


Dong award:

OUTSTANDING HSE PERFORMANCE

Installation of joints on top of the cable trench where the cable ends

No joint bay and minimal dewatering at sag pits

Increased safety: No handling of material up and down joint bay

Sag pit before and after container take over length needed and cable

movements due to temperature differences

LATEST INSTALLATION INNOVATION

Increases Safety & Makes Joint Bays Obsolete


Container Installation - Mittel.mov

In cities or natural protected areas excavation is not economically viable

Dielectric oil biodegradation by non-hazardous bacteria (class 1)

It is possible to eliminate up to 96%, the remainder is unlikely to spread

Less environmental risk due to corrosion or collateral damage

No pressure monitoring of cable systems which can’t be excavated

Approx all 2km/80m height difference set of degradation container

NATURAL BACTERIAS CLEAN UP OILIf excavation of LPOF cable is impossible


*Average of the cables treated up to date

TEMPORARY SITE CABLES 66-220kV

Keeping electricity available

Installing temporaries in substations

Reducing disconnection times

Flexible terminations can be installed quickly

Provisional connection of overhead lines

Replacing temporary overhead lines

New crossing overhead lines

Fast deployment of pre-tested and safe cable

system in case of emergencies

Supplies can be quickly restored

Recheck for partial discharge after use


NEXANS - Baueinsatzkabel english med.mp4

Submarine MV cables

OWF Inter-array, island connections

and lake/river crossings

Pioneering alternative offshore wind design

Nexans supply cables and accessories for Blyth the world's first 66 kV

Offshore Demonstrator Wind Farm Project in UK

Nexans completed qualification for 66 kV XLPE insulated submarine cable

systems as part of the Carbon Trust program

Highly skilled offshore team fully health and safety trained

66kV INTER-ARRAY NOW QUALIFIED

Increasing wind turbines within OWF


DYNAMIC POWER CABLES

Offshore wind innovation: Hywind Park

Successful demo in Norway facilitated by Nexans’ cables which has

been in operation since 2009

Nexans will deliver reliable static and dynamic cabling and

accessories for the world’s first floating wind farm in Scotland

In-house competence engineering, testing, manufacturing and

installation of dynamic power cables and umbilical


Superconducting Systems

Running in real grids

Pragmatic solution for high energy transmission with limited space

Very high power transmission capacity

Transmit the same power at lower voltage levels

Transmit higher power at the same voltage level

Very low impedance

HTS cable take load from parallel overloaded paths in the grid

No outer magnetic field

No thermal impact on environment

No drying out of soil, no thermal backfill required

No maximum laying depth, no bottlenecks at cable crossings

Very limited space needed

AmpaCity 10kV, 2300A

LIPA 138kV, 2400A

SUPERCONDUCTING CABLESReplacing inner city HV cable or partial OHL


Thank you for your attention

Any questions?

V 170307

John Owen

Business Development Manager

Nexans - Land High Voltage BL, UK

Mobile: +44 (0) 7825 620518

Email: [email protected]

ohl submarine - ea technology · 2017-08-04 · offshore demonstrator wind farm project in uk...

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