Distribution Network constraints, joint planning & solutions ...20...Aurora Energy - Distribution...
Transcript of Distribution Network constraints, joint planning & solutions ...20...Aurora Energy - Distribution...
Aurora EnergyAurora Energy
distribution network connection distribution network connection issues, planning & solutionsissues, planning & solutions
(August 2008)(August 2008)
Aurora Energy - Distribution Network Constraints, Joint Planning & Solutions (AER Forum - August 2008) 2
Tasmanian distribution networkTasmanian distribution network
Aurora Energy - Distribution Network Constraints, Joint Planning & Solutions (AER Forum - August 2008) 3
11kV & 22kV distribution network11kV & 22kV distribution network
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key elements of integrated planningkey elements of integrated planning
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
Transmission Annual Planning Statement
Reliability Review Report (RNPP) R
Annual Performance Report R
ESI Performance Report (OTTER) R
SOO & ANTS process (NEMMCO) NEMMCO publish Loss Factors
Annual Planning Report
Trans. Annual Performance Report
Distribution Annual Planning Report
Dist. Annual Performance Report
Distribution POW / Budgeting process
RLoad Forecasting
DLF study
distribution network APR
inputs
R
R
APR
R R
Transmission load forecasting
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distribution network constraints & issuesdistribution network constraints & issues• previously identified joint solutions / projects - in progress
• program of work (projects) recognised in Aurora’s recent Pricing Submission & integral in the delivery of outcomes
• specific distribution network areas of concern
– reliability issues (new performance standards)
– capacity constraints (load growth, security & operational)
– distribution feeder (PQ metering, protection, access & control)
– project management (asset boundary joint requirements)
all of which affect the transmission connection pointsall of which affect the transmission connection points
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• area (discrete communities), rather than feeder based
• better represent customer reliability expectations
• the work required to bring the new areas into compliance was developed in conjunction with OTTER and fully funded
new distribution reliability standardsnew distribution reliability standards
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new reliability categoriesnew reliability categories
Critical Infrastructure• Inner Hobart CBD
1
No. of communities
8High Density Commercial• Hobart CBD, Launceston, Devonport, Burnie,
Glenorchy CBDs, Rosny, Kingston, Kings Meadows
32Urban and Regional Centres• expanded from Greater Hobart, Greater Launceston,
Burnie and Devonport areas to include larger rural towns, eg Deloraine, Bridport, Strahan
Higher Density Rural• Rural Residential, Agribusiness
33
Lower Density Rural• The Rest
27
101
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Critical Infrastructure (heart of Hobart CBD)High Density Commercial (eg Eastlands)
UrbanHigh Density Rural (higher value farming)Low Density Rural (lower value farming)
NEW RELIABILITY AREAS
new new reliability reliability communitiescommunities
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network focus & impactsnetwork focus & impacts• distribution network focus
• Targeted Reliability Improvement Programs (TRIP)• targeting the worst performing areas• some rural communities will require further concentrated effort
• drive towards a ‘Smarter Network’ – (self healing, faster response)• Distribution Loop Automation• realtime SCADA to Reclosers
• create greater inter-connectability with adjacent feeders• shorter feeders = better reliability
• what that will mean to connection points• additional and shorter distribution feeders
• influence decisions on new connection sites (location & no. of feeders)
• greater requirement to get protection right
• closer & greater monitoring of reliability and supply quality
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statewidestatewide results results –– Maximum DemandMaximum Demand
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
MW
Year
Total Aurora Network Maximum Demand Forecast
Actual
Forecast Growth
High Growth
Low Growth
Linear (Actual)
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distribution network capacity constraint issuesdistribution network capacity constraint issues
West CoastWest Coast(mining developments)(mining developments)
George Town George Town Launceston (south)Launceston (south)
Hobart West (+ city)Hobart West (+ city)Hobart eastern shoreHobart eastern shoreHobart Northern suburbsHobart Northern suburbsBrighton areaBrighton area
Devonport Devonport Port SorellPort SorellDeloraineDeloraineWestburyWestburyWynyard Wynyard
Burnie Burnie PenguinPenguin
East coast areaEast coast areaMidlands areaMidlands area
+ growth hot spots+ growth hot spots
Kingston Kingston -- ElectronaElectrona
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area issues & proposed network solutions optionsarea issues & proposed network solutions options
• Hobart Eastern Shore (HES)
• Hobart Western Shore (HWS)
• Kingston
• Greater Launceston Area Development (GLAD)
• Devonport / Wesley Vale
• Burnie / Wynyard
• West Coast
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HES HES -- specific developments & load growth areasspecific developments & load growth areas
Geilston Bay Zone
Rokeby TS
Lindisfarne TS
Bellerive Zone
Richmond Zone
Average annual forecasted load growth
(2007) 3.5%
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HES HES -- proposed proposed subtransmissionsubtransmission networknetwork
Geilston Bay Zone
Bellerive Zone
Lindisfarne TS
Richmond Zone
Rokeby TS
Cambridge Zone2009
(growth & security)
Mornington TS2010
2010
2012Kangaroo Bay Zone
Shoreline Zone(growth & security)
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HES HES -- long term long term subtransmissionsubtransmission networknetwork
2014
2016 + Richmond ZoneRisdon Vale Zone
Lauderdale Zone
2016 +
Geilston Bay Zone
Bellerive Zone
Lindisfarne TS
Rokeby TS
Cambridge Zone2009
Mornington TS2010
2010
2012Kangaroo Bay Zone
Shoreline Zone
(growth & security)
(growth & security)
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HWS HWS -- proposed proposed subtransmissionsubtransmission networknetwork
Claremont ZS
Chapel St TS
Bridgewater TS
Risdon TS – 33kV
Creek Rd TS – 33kV Nth Hobart TS
3.8 %
2.4 %
2.9 %
Bridgewater 33kV
Granton Zone2012
2012
(growth & security)
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HWS HWS –– long term long term subtransmissionsubtransmission networknetwork
Claremont ZS
Chapel St TS
Bridgewater TS
Risdon TS – 33kV
Creek Rd TS – 33kV Nth Hobart TS
Bridgewater 33kV
Granton Zone2012
2012
(growth & security)Otago Bay Zone
Creek Rd Zone2015
Risdon Vale Zone
2016 +
(growth & security)
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Kingston Kingston -- proposed proposed subtransmissionsubtransmission networknetwork
Electrona TS
Kingston TS4.5 %
3.5 %
Browns Rd ZoneKingston 33kV2010 / 112010 / 11
(growth & security)
Blackman’s Bay Zone2014
Margate Zone
2017 +
Mt Nelson Zonefuture
(growth & security)
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Launceston Launceston -- proposed distribution connectionsproposed distribution connectionsgreater greater Launceston Launceston areaarea
Trevallyn TS
Mowbray TS
Hadspen TSNorwood TS
2nd stage 2008 / 09
2.5 %2010 / 11
Newstead TS
110kV line2010 / 11
(growth & reliability)
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northwest northwest -- proposed distribution connectionsproposed distribution connections
Burnie TS
Ulverstone TS
Burnie (Wynyard Burnie (Wynyard -- Penguin)Penguin)
2.1 %
2.1 %
2012 / 13
2010 / 11Wynyard TS
Penguin TS
(growth & reliability)
(growth & reliability)
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Railton TS
Ulverstone TS
Devonport TSWesley Vale TS (11kV)
2.0 %
2.0 %2012 / 13
Wesley Vale TS (22kV)
(growth & reliability)
north north -- proposed distribution connectionsproposed distribution connections
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