Adaption of Cable Accessories for Onshore & Offshore Substation - PowerPoint PPT Presentation

Adaption of Cable Accessories for Onshore & Offshore Substation MATTHIAS FREILINGER

Adaption of Cable Accessories for Onshore and Offshore Substation Matthias Freilinger Head of Sales Cable Transmission

Contents  Adaption for Onshore Substation  Dry outdoor termination – optimized construction  Dry outdoor termination – Surge Arrester included  Dry outdoor termination – Advanced Testing  Connex Pluggable Solutions – Combining different Worlds  Adaption for Offshore Substation  Connex Pluggable Solutions – Offshore certification  Testing at Offshore platforms  Accessories for Ultra Bendable EPR Cables Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 2 19.10.2015

Dry type outdoor terminations – flexible (ESF) Advantages  No insulating oil, no leaking, explosion resistant  Safe and easy installation on the ground  Each stress cone routine tested according IEC 60840  No scaffold necessary;  Very cost effective solution by well known and proven electric design Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 3 19.10.2015

Dry type outdoor terminations – self supported (EST) Advantages  No insulating oil, no leaking, explosion resistant  Safe and easy installation on the ground  Lifting on the tower using easy lifting tool  Baseplate and support construction is 360° rotating around the termination during lifting  Each stress cone routine tested according IEC 60840  No scaffold on the tower necessary; saving total project costs  Short shut out times of the overhead lines (max 1 day for 3 phases)  PFISTERER patented solution Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 4 19.10.2015

Combining both advantages – EST for Substation Application 1  No insulating oil, no leaking, explosion resistant  Safe and easy installation on the ground  Mechanical part of termination installed directly on support  Lifting and easy adjusting possible due to open base plate  Each stress cone routine tested according IEC 60840  No scaffold necessary; saving total project costs  Combining mechanic stability and cost effectiveness Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 5 19.10.2015

Integrated surge arrester – EST for Substation Application 2  No insulating oil, no leaking, explosion resistant  Safe and easy installation on the ground  Mechanical part of termination installed directly on support  Lifting and easy adjusting possible due to open base plate  Each stress cone routine tested according IEC 60840  No scaffold necessary; saving total project costs  Combining mechanic stability and cost effectiveness  Further cost saving as post insulator is replaced by surge arrester  Space and cost saving potential at substation design: Only one standard support for two components Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 6 19.10.2015

Surge Arrester – how to integrate  Base plate where a surge arrester is mounted has to be on earth potential  Surge arresters for solid earthed systems as well as coil earthed systems has to be considered  Tube type surge arresters offer highest mechanical stability and save conditions during an incident  Cage type surge arresters offering sufficient mechanical stability, during an incident in worst case can harm the functional design of the termination but offer cost effectiveness  The electric influence of both, termination and surge arrester, on each other has to be clearly understood to define a optimal combined product. Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 7 19.10.2015

Surge Arrester – how to integrate  Distribution of the electric potential along metal oxide is more homogenous  the voltage along the upper discs is reduced by the influence of the cable termination  This effect gets stronger by shorter distances.  The electric field strength along the silicone sheds at the surge arrester normally is highest at the upper part of the surge arrester  Depending on smaller distances towards a cable termination this effect can be equalized or even inverse.  Electric field strength at the cable termination is forced from the upper part of the termination towards the lower part  Electric field strength is higher at the side of the surge arrester by smaller distances. Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 8 19.10.2015

Advanced testing for higher customer benefit  Type- and Prequalification tests according to IEC60840 or IEC62067 have to be performed on all cable Accessories for most Customer  Additional material tests like the tracking and erosion test according to IEC60587 (Third edition, 2007-05)  Mechanical cantilever tests has been performed during the development stage Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 9 19.10.2015

Advanced testing for higher customer benefit  Salt fog withstand test according to UX LK 208 Rev. 01 and based on IEC 60507 (Second edition 1991-04), confirming the required specified salinity of 112 kg/m 3 at a test voltage of 98.1 kV (170 kV / √3 ).  Wet power frequency withstand voltage test according to UX LK 208 Rev. 01, which consists on the application of 2,5 U 0 (218kV) during 15 minutes while the test object is under artificial rain as stated in IEC 60060-1 Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 10 19.10.2015

Connex pluggable solutions – Combining different worlds Transformer Testing: IEC 60137 Housing: EN 50299 Cable termination Testing: IEC 60840 and IEC 62067 GIS Testing: IEC 62271-203 Housing: IEC 62271-209 Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 11 19.10.2015

Full range of products satisfies the customer Surge Cover disk Protective cap Earthing cap arrester Dummy plug Earthing and short-circuit devices Cast resin joint Current testing plug Gas-insulated blind cover (only for testing) Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 12 19.10.2015

Offshore Substations – A total different World  Harsh environmental conditions:  Salt water and salt fog  High UV radiation  Limited space available  Short bending radii for cables  Connecting sea cables with platform cables  Highest reliability requested (difficult to access substation)  Tested and Certified before sent offshore Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 13 19.10.2015

Offshore Certification  Classification of materials  Salt fog tests  Ageing tests during UV radiation Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 14 19.10.2015

Connection between GIS and transformer Connection between sea cable and tower cable Inter-array cable Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 15 19.10.2015

72.5 kV Joint for HV-CONNEX  Pluggable connection for inter-array cabling  Fast and easy installation with CONNEX connectors  No oil or gas involved  Epoxy body fully offshore proved  Connection of different cable diameters Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 16 19.10.2015

72.5 kV Cable Termination  CONNEX Socket and Separable Connector  Same system for GIS and Transformer  Withstanding up to 50 kA short circuit currents  Independent of installation position  In use since more than 20 years Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 17 19.10.2015

Testing - Case study Borkum 2 Transformer GIS Test Voltage Gas insulated blind cover Pluggable bushing and Gas filled elbow joint Plattform Test Cable Connection Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 18 19.10.2015

Testing - Case study Borkum 2 Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 19 19.10.2015

Alpha Ventus and Borkum 2 – Pluggable Solutions on Bord Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 20 19.10.2015

Ultra flexible EPR cable  EPR cables with 800 mm2 high flexible copper conductor class 5  Pluggable joints and terminations as well as dry outdoor terminations have been qualified  Tests and developments  Mechanic torque conductor connector “ Sicon ” has been adjusted and tested according IEC 61238-1 (Second edition, 2003-05)  Typetest according IEC 60840 for U m = 170 kV  Minimize bending radii – Space saving on- and offshore  Movement of two connected high voltage equipment possible  Robust and flexible design (testing cables, construction site, mining) Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 21 19.10.2015

Thank you. Pfisterer High Voltage Cable Accessories Matthias Freilinger – Adaption of Cable Accessories for Onshore and Offshore Substation 22 19.10.2015