Post on 23-May-2020
transcript
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: john.owen@nexans.com
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
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TEPCO,
Tokyo 2016
150-400kV PARTIAL UNDERGROUNDINGBring OHL underground in residential areas
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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
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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
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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
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ANTI-EXPLOSION TERMINATIONS FRX
Safety of people and assets is key
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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
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
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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
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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
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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
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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
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*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
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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
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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
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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
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Thank you for your attention
Any questions?
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John Owen
Business Development Manager
Nexans - Land High Voltage BL, UK
Mobile: +44 (0) 7825 620518
Email: john.owen@nexans.com