EMF RADIATION - UPDATE Europacable for trim mtg 10 feb 2014 1

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  • 1. What underground cables can and can not do: Introducing the Concept of Partial Undergrounding Meeting organised by Marian Harkin, MEP North East Pylon Pressure Dr. Volker Wendt, Director Public Affairs, Europacable Trim, 10 February 2014 Europacable, Boulevard A. Reyers, 80 1030 Brussels www.europacable.com 1
  • 2. Introducing Europacable Objectives of today‘s presentation Introducing Europacable: What we do and what we don´t do Introducing the Europacable Concept of Partial Undergrounding Overview of partial undergrounding deployment in Europe What are the challenges ahead?  Discussion: Clarification of any technical questions you may have 2
  • 3. Introduction Europacable represents approx. 85% of the European wire and cable manufacturers in Brussels Globally leading, multinational cable makers and specialized SMEs Data-, Telecommunication- & Energy-cable technology Environmental topics EU & international standardisation Objective Provide clear, consistent technical information to all interested parties in a fully transparent manner Raise visibility of European technology leadership 3
  • 4. Introduction Europacable does NOT take any view whether or not a line is needed does NOT take any position on the technology to be used to construct a line Europacable does provide the exact same technical information on extra high voltage XLPE power transmission cables (AC and DC) to all interested parties seeks to contribute to an informed discussion based on today´s state of the art technology available in Europe 4
  • 5. The Challenge: Europe needs more grids 2012 ENTSO-E TYNDP 51.500 km EHV power lines to be built/refurbished by 2020 70% of new investments forecast in North Sea Region But: Risk of delays 30% of current grid projects across Europe are delayed 75% of projects in North Sea Region are classified as medium or high risk of not meeting the planned commissioning date How do we minimise delays?  mainly due to “social resistance & lengthy permitting procedures”  we need innovative solutions! 5
  • 6. Europacable Concept of Partial Undergrounding Essentials for 380 / 400 kV AC Networks  Most of Europe‘s new grids will be overhead lines  It‘s not „overhead lines against underground cables“ but  „Partial undergrounding complementing overhead lines in sensitive areas“ 6
  • 7. Europacable Concept of Partial Undergrounding Essentials of 380/400kV Partial Undergrounding Sections upto around 20km possible without compensation Allows for alternative, possibly shorter routing Limited, manageable environmental and visual impact Ability to be integrated into existing meshed AC networks Higher investment costs may be neutralised due to quicker realisation  Core technology: Extra High Voltage Cross Linked Polyethylene Underground Cables – in short: EHV XLPE Underground Cables 7
  • 8. EHV XLPE Cables – Key facts Joint Paper on feasibility of partial undergrounding, 2011 EU Transmission System Operators (ENTSO-E) & Europacable Co-ordinated by European Commission DG Energy Approves EHV XLPE cable technology “Extra high voltage cross linked polyethylene cable XLPE are mature and reliable technology” “Partial undergrounding is a means to upgrade & expand Europe’s EHV electricity grid” “Solutions are to be considered on a case-by-case basis”  Key reference for EHV XLPE underground cables  Available at www.europacable.com 8
  • 9. EHV XLPE Cables – Key facts Laying of EHV XLPE Cables Usually directly buried into the ground, surrounded by sand blending, can also be installed in tunnels, ducts or pipes Average laying depth: 1,60 m Average cable length: 700 – 1000 meters Cables are linked by joint bays Directly buried in the ground, surrounded only by sand blending; or Placed in underground structure, typically 10m by 2.5m by 2.1m depth  Considerable work required during installation 9
  • 10. EHV XLPE Cables – Key facts Environmental impact Installation works represent considerable impact on the environment Vegetation will be re-installed after 1 – 2 seasons Limited impact during operation No drying of soil No limitation to cultivation apart from deeply rooted trees No limitation on agriculture – need to introduce compensation schemes  Cable section will be visible if cutting through forest – but will blend into open landscape 10
  • 11. EHV XLPE Cables – Key facts Electromagnetic Exposure EMF over cable at full load may be higher than for overhead line but drops quicker on the sides, taking less space Shielding technologies available – at higher cost  As for overhead lines, exposure to EMF stays well within limit of EU Recommendation 199/519/EC 11
  • 12. EHV XLPE Cables – Key facts Reliability Complete cable systems undergo thorough test procedures (IEC Standards) after production, after installation and before being placed in operation Once in ground, cables are well protected against external impacts  XLPE underground cables are reliable technology Repairs Single faults on cable may take longer to repair than on overhead line repair times on larger systems are comparable CIGRE Brochure 379: Over 1/3 of cable faults were repaired and system re-energised within less than 1 week More than 75% of cable faults within 1 months Keeping spare parts is critical  N-1 Criterion ensures security of supply at all times 12
  • 13. EHV XLPE Cables – Key facts Costs of partial undergrounding Investment cost factor for 400 kV XLPE cables is 3 – 10 dependent on project details and soil conditions (up to 60%) 3 – 10 cost multiple applies to undergrounded section only Cost factor for investment for entire line project will be 1.2 – 2 Speedier realisation will reduce or may even neutralise investment cost  Life cycle costs of project are to be considered 13
  • 14. EHV XLPE Cables – State of the Art AC XLPE cables in use More than 25 years commercial experience at HV levels (110-150 kV) More than 20 years commercial experience at EHV level (220 – 275 kV) More than 15 years experience at EHV level (380 – 400 kV) AC XLPE cables installation globally since 2000 High Voltage: > 200.000 km Extra High Voltage: > 10,000 km EHV XLPE Availability 40% capacity increase from 2008 to 2011 Annual capacity for Europe alone is about 3.500 KM It works!  Global technology leadership of European manufacturers 14
  • 15. Partial undergrounding – Deployment in Europe TenneT: Randstadt Project, The Netherlands Total length: 85 km linking Rotterdam, Amsterdam & The Hague Double circuit 380kV, transmission capacity 2x2635 MVA Twofold innovation New pylon design for overhead line „Windtrack“ Partial undergrounding on total of 20km: Southern section: 10,8 km undergrounding operational since Sept 2013 Northern section: 9,5 km undergrounding to be built 2015 - 2017 15
  • 16. Partial undergrounding – Deployment in Europe Projects currently in construction / in planning: TenneT: EnLAG projects, Germany ca. 6 km Dörpen / West Meppen, in planning ca. 7 km Fedderwahren – Conneforde, permitting phase ca. 12 km Gannderkeese – St. Hülfe, permitting phase ca. 8 – 10 km Wahle-Mecklar, permitting phase Amprion: 7 km, Rasfeld, Germany Swissgrid: 1 km, Riniken, Switzerland RTE: over 1000 km cables 225 kV, France National Grid: £500 Million Fund to undergrounding existing 400kV overhead lines in National Parks, UK 16
  • 17. Conclusions Partial undergrounding is available Each project needs to be carefully evaluated on a case by case basis Requires new thinking, creates new possibilities for reliable, acceptable and affordable grid extension in Europe Need to create reliable framework for local communities & TSOs When to deploy partial undergrounding – and when not? How to consider partial undergrounding from the outset of permitting procedures? How to avoid a limitation of cost considerations to installation cost only but to consider full life cycle cost – including possible effects of acceleration?  Different member states are currently pursuing different approaches  We should aim for a harmonised approach across Europe 17
  • 18. Thank you for your attention! Dr. Volker Wendt, Director Public Affairs v.wendt@europacable.com Europacable, Boulevard A. Reyers, 80 - 1030 Brussels www.europacable.com 18