Our Strategic Plans to Build a Reliable Transmission Network for a Low Carbon Environment in Future
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December 8-9, 2011, EPRI Workshop, Manchester University, UK Ziming Song Drives, Challenges and Tasks
Drives and Challenges To meet the EU 2020 Environment targets On generation – up to 30% of electricity from renewable sources On demand – a 20% cut in energy consumption by improving energy efficiency, many uncertainties (embedded generation, EV, demand response etc.) Tasks Reinforce the existing network and vastly extend it to connect offshore wind farm generations Respond to the changes from active DNOs – many uncertainties Extensively use power electronic devices, state-of-art technologies, and innovative approaches
2 Scenarios used for Future Network Planning Studies
3 An overall picture of future network Reinforcement
TRANSMISSION SYSTEM REINFORCEMENTS Focus on Scotland
Dounreay Thurso REINFORCED NETWORK Mybster
Stornoway Cassley Driven by renewables Dunbeath 400kV Substations Lairg 275kV Substations THE SHETLAND ISLANDS Brora 400kV CIRCUITS Shin 275kV CIRCUITS
Mossford Grudie Bridge Major Generating Sites Including Pumped Storage Alness Conon Orrin Elgin Fraserburgh Luichart Ardmore Macduff St. Fergus Connected at 400kV Dingwall Deanie Culligran Keith Strichen Connected at 275kV Inverness Nairn Aigas Blackhillock Dunvegan Kilmorack Peterhead Hydro Generation Beauly Fasnakyle Dyce
Glen Kintore Persley Broadford Morrison Woodhill Willowdale Foyers Ceannacroc Boat of Fort Augustus Garten Clayhills Under Construction or ready to start Tarland Craigiebuckler Redmoss Invergarry Construction subject to consents Quoich
Fiddes Focus on East Coast Fort William Errochty Errochty Power Station Reinforcements in Development. Rannoch Clunie Bridge of Dun Pre - Construction Activities only Tummel Lunanhead Bridge Tealing Cashlie Dudhope Arbroath Lochay Lyndhurst Milton of Craigie
Killin Charleston Taynuilt Finlarig Cruachan Dalmally Burghmuir Dudhope Series Capacitors Glenagnes DiDriven b y off ffhshore renewabl es / St. Fillans Nant Clachan SCOTTISH HYDRO-ELECTRIC Cupar TRANSMISSION Inveraray Glenrothes Sloy Leven Devonside Westfield Redhouse Whistlefield Stirling Kincardine Glenniston Port Mossmorran Dunfermline Ann Longannet Bonnybridge Iverkeithing nuclear Dunoon Helensburgh Grangemouth Shrubhill Cockenzie Dunbar Spango Devol Strathleven Telford Rd. Portobello Valley Moor B roxburn Gorgie Torness Erskine Cumbernauld Bathgate Whitehouse Inverkip Lambhill Easterhouse Livingston Kaimes Currie Newarthill Clydes Neilston Mill Hunterston Berwick Farm Wishaw Hunterston Busby Strathaven Blacklaw Kilwinning Whitelee East Kilmarnock Kilbride Saltcoats Town S outh Linmill Eccles Carradale Meadowhead Galashiels Kilmarnock Coalburn South Ayr SP TRANSMISSION LTD. HVDC Link increases capacity by up to Coylton Elvanfoot Hawick 1.8GW Maybole 2018
NGC
Gretna Blyth Auchencrosh Dumfries Ecclefechan Fourstones Newton Focus on South & West Tynemouth Stewart Chapelcross Harker South Shields Stella West West Boldon Glenluce Tongland Offerton Hawthorne Pit Hart Moor Spennymoor Hartlepool Saltholme Tod Point Grangetown Norton GtGreystones
Lackenby Driven by nuclear/wind Reconductor + HVDC Link increases capacity by up to Series Capacitors 1.8GW increase B6 by 1GW 2015 Hutton 2015 HVDC Link from Humber to Walpole Heysham Quernmore Poppleton Osbaldwick provides 3GW offshore wind/CCGT 2018 Thornton Bradford West Kirkstall Stanah Skelton Creyke Beck Padiham Grange Monk Fryston Saltend North Advance asset replacement at Deeside Saltend South Penwortham 400kV substation. Elland Drax Killingholme Eggborough Humber Refinery Rochdale Ferrybridge Keadby Washway South Templeborough Thorpe Humber Farm Kearsley Whitegate West Kirkby Marsh Bank Grimsby South Melton Lister Stalybridge West Wylfa Manchester Pitsmoor Drive Rainhill Stocksbridge Aldwarke West Winco Bank Burton Birkenhead Carrington Bredbury Neepsend Thurcroft Complete Bramford Substation and Fiddlers Daines Sheffield City Ferry Brinsworth Cottam new 400kV line to Braintree 2016 Capenhurst Frodsham Jordanthorpe Norton Lees Pentir Macclesfield Capacity for 5GW wind/nuclear Additional 400kV double circuit to Pentir Chesterfield Deeside High +3GW new generation capacity Dinorwig Marnham CCGT. Staythorpe £4.76b Strategic Investment offshore/Wylfa Legacy Ffestiniog Cellarhead Bicker Fenn Willington Trawsfynydd Ratcliffe
Drakelow Walpole Rugeley Spalding North Norwich Ironbridge Bushbury Main Willenhall Bustleholm Shrewsbury Penn Hams Ender by Nechells New Circuit for 710MW contracted Hall Ocker Hill Coventry onshore wind Oldbury 2015 Kitwell Berkswell
Burwell Sizewell Feckenham Main Bishops Grendon £26b Offsh ore I nvest ment Eaton Wood Socon
Patford Bramford Bridge East Sundon Claydon Pelham Wymondley Leighton Braintree Buzzard Rassau Walham Rye House Waltham Imperial Brimsdown Cross Park Swansea Cowley Pembroke Watford Elstree Hackney North Amersham Main Rayleigh Main Baglan Cilfynydd Whitson Culham Mill Hill Tottenham Redbridge Warley Minety Didcot Bay Upper Boat Uskmouth Iron Acton Willesden West Thurrock Margam Barking Coryton Alpha Steel Iver Ealing Northfleet East Pyle N.Hyde Singlewell Seabank City Rd W.Ham Tilbury Grain Cowbridge St Johns Tremorfa Laleham Wood New Hurst Cross Kingsnorth New 400kV CCT between Hinkley & Seabank Aberthaw Cardiff West Kemsley East Melksham Bramley Rowdown Littlebrook £4b Asset Replacement Weybridge Chessington provides capacity for offshore wind Beddington Fleet Canterbury CCGT/Nuclear Wimbledon North Hinkley Point Sellindge Bridgwater
Alverdiscott Bolney Nursling Taunton Ninfield E de F Dungeness Marchwood Lovedean 1a. “Strategic Investment” in Axminster Mannington Fawley Botley Wood Exeter
Chickerell 1. Build more transmission transmission – Technical Studies Langage Abham Landulph Indian ISSUE A 02-12-08 41/177609 C Collins Bartholomew Ltd 1999 Queens capacity faster 1b. Regulatory Reform for Strategic Investment
4 An Example of Offshore Wind- Generation Connection
5 Cases for Reliability Assessments -- network level
Adequate reserve for reliable and economic operations How much reserve is required in light of a high percentage of wind penetration How to manage the reserve to ensure demand can be met securely Demand modelling -- impact of active DNOs, embedded generations, EV, smart grid and real time management etc. Identifyyg the determining factors/methods in reliabilit y assessment among wind generation, active demand, interconnector etc.
6 Cases for Reliability Assessments --Technologies and Operations
Interconnection to countries in Europe New Technologies HVDC – not only bulk power transfer, but dynamic control and voltage regulation to increase the stability margin VSC – HVDC, connecting large scale wind-generation SC – shorten the virtual distance of long lines PMUs – monitori ng th e st at es of power fl ows i n real ti me an d providing co-ordinate measures against any likelihood of trouble Network Operations (forecasting, system analysis etc.) Energy storage at transmission level Simulation capability (specific models for new devices and network wide simulation studies)
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