Orkney Grid Presentation Presentation for OREF by Colin Risbridger [email protected] Orkney Distribution Network March 2013 33/11kV substations and other equipment Westray Sub Station 4MVA Eday Sub Station 1MVA Rousay Sub Station 1MVA Sanday Sub Station 1MVA Burgar Hill Sub Sation 2. 5 & 0. 4MVAr Reactor 8MVA 4.75MVAr Reactor Stronsay Sub Station 1MVA EMEC Sub Station 1MVA 1&0.6MVAr Reactors 2MVAr Reactor Stromness sub station 8MVA Shapinsay Sub Station 1MVA North Hoy Sub Kirkwall Sub Station 0.15MVA Station 48MVA Scorrodale Static Var compensation St Marys Sub Station 4MVA Lyness Sub Station 1MVA Flotta Sub Station 8MVA 2 x Submarine Cables (20MVA & 32MVA) [email protected] Orkney Generators - March 2013 [email protected] Orkney Generation - March 2013 Newark 0.5MW 11kV Total local Generation, therefore connections 80MW Hammer 0.5MW 415V Gallowhill 0.9MW 11kV Gallowhill 1.8MW 11kV Eday Wind 0.9MW 11kV Sigurd 1.5MW 11kV Microgeneration 0.559MW 2MVAr Reactor Thor finn 4. 3MW 11kV Microgeneration 0 .148MW NWP 5.0MW Burgar Hill 2.3MW Hammers Hill 4.5MW Rousay Wind 0.9MW 11kV Evie Wind 2.3MW Microgeneration 0.434MW Luddenhill 0.5MW Spurness 7.5MW Microgeneration 0.719MW Spurness 2.45MW 4.75MVAr Reactor 2.5 & 0.4MVAr Reactor Microgeneration 0.427MW EMEC 4MW 11kV DounbyWind 0.9MW 11kV Bu Farm 2.7MW Stronsay Wind 0.9MW Shapinsay Wind 0.9MW Hatston 0.9MW 11kV 1&0.6MVAr Reactors Microgeneration 0.059MW Microgeneration 0 .078MW EMEC 7MW 11kV Renn ibis ter 0. 9MW Stromness Micro 0.668MW Cleat 0.08MW 11kV Thorkell 0.9MW 11kV Barns of Ayre 2.7MW Storage Park 2MW Dale Spot 0.08MW Scorrodale Static Var Towerhill 0.08MW Salmon Fish Farm 0.055MW 11kV compensation Scapa Wind 0.08MW Fea Wind 0.08MW 11kV Microgen 0.703MW New Holland 0.5MW 11kV Microgeneration 0.927MW Burray 0.9MW 11kV Ore Brae 0.9MW 11kV Microgeneration 0.121MW West Hill 2MW 11kV 2 x Submarine Cables (20MVA & 32MVA) Flotta 10.5MW Firm connection 26.455MW Pinch Point Monitoring Intertrip connected 19.4MW ANM connected 28.55MW Microgeneration 4.967MW Produced by Colin Risbridger for Grid Working Group – [email protected] Orkney Distribution Network March 2013 Cable Capacities (Spring/Autumn) Eday Cable 12MVA Eday Cable 12MVA Westray Cable 12MVA Rousay Cable 12MVA Sanday Cable 16MVA Burgar Hill Cable 24.9MVA Stronsay Cable 16MVA Rendall Cable 18.1MVA Shapinsay Cable 12MVA Scorradale Cable 16.1MVA Stromness Cable 15.7MVA Scorradale Cable 16.1MVA Stromness Cable 15.7MVA St Marys Cable 22.3MVA Burray Cable 3.5 MVA North Hoy Cable 14MVA Flotta Cable 14MVA LynessCable 16.6 MVA [email protected] Orkney Distribution Network March 2013 Power Flows Zone 1 – 15.141MW Eday Cable 12MVA Eday Cable 12MVA Westray Cable 12MVA Zone 2a – 14.055MW Rousay Cable 12MVA Sanday Cable 16MVA Burgar Hill Cable 24.9MVA Zone 1a – 16.619MW Stronsay Cable 16MVA Rendall Cable 18.1MVA Shapinsay Cable 12MVA Zone 2 – 0.959MW Scorradale Cable 16.1MVA Stromness Cable 15.7MVA Scorradale Cable 16.1MVA Stromness Cable 15.7MVA Zone 3 – 13.145MW CZCore Zone – 13. 946MW St Marys Cable 22.3MVA Zone 4 – 5.507MW [email protected] Burray Cable 3.5 MVA North Hoy Cable 14MVA Flotta Cable 14MVA LynessCable 16.6 MVA Generation in red Orkney Grid Presentation Performance in terms of kWh – Large Scale ROC Generators [email protected] Orkney Grid Presentation Numbers – SmallScale FiT Generators <50kW Capacity Factors for small generators taken from Orkney Database of 47 of the 444 small scale generators. Email me if you would like to join the database and share information with others. [email protected] Orkney Grid Presentation What about the future? • We need to think kWh and not kW – Income based on kWh, grid costs on kW • We need to think about kVArs and not just kWh – Flexible commercial connection terms • We need to think Volts not just kVArs – Stability of network and security of supply • We need to think about thermal limits – Cable Failures and Equipment failures • We need to think about safety of those working on the network – Switching to keep power on • We need to distribute the benefits from RE wider in society – Fuel Poverty scandalous • We need to identify the short term fixes and implement solutions – Not just Transmission • Look for demand solutions where sensible as they cause harm – Electric heating for microgen [email protected].