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Some Nsw System Planning Issues

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Some Nsw System Planning Issues SOME NSW SYSTEM PLANNING ISSUES Dr Col Parker Manager/System Planning & Analysis David Hill’s Contributions from a NSW planning perspective • Dynamics of voltage collapse • Modelling of loads and load dynamics • Direct methods of transient stability • Stability - theory • Excitation system control • Power system analysis • Contributions via: – Papers – Discussion – Joint R&D work with TransGrid – Research leader to later generations Contents • Background - NSW system • 500 kV system developments • Damping issues • Wind generation • Load dynamics • Transient stability capability • Diverse sources of generation Background - NSW main system 4800 km AC NSW is part of the mainland interconnected eastern system Australian electricity system HVDC link NSW - Qld HVDC link Vic - SA HVDC cable To Tasmania Forecast power demands (MW) summer 2009/10 16000 14000 12000 10000 8000 6000 4000 2000 0 Qld NSW Vic SA Tas NSW main system Lismore Load 15,000 MW Coffs Coal fired generation 11,900 MW Armidale Harbour Gas turbines 1,800 MW Snowy import 3200 MW Tamworth Import from Qld 1250 MW Muswellbrook Liddell/Bayswater 500, 330, 220, 132 kV Wellington Newcastle Transmission (12500 km) Eraring/Vales/Munmorah Mt Piper/W’Wang Tuggerah Sydney Bannaby Marulan Wollongong Yass Kangaroo Valley Wagga Canberra T3 Jindera T1/T2 Murray Major power station centres Lismore Coffs Armidale Harbour Tamworth Muswellbrook Wellington Liddell/Bayswater Newcastle Eraring/Vales/Munmorah Mt Piper/W’Wang Tuggerah Sydney Bannaby Coal Marulan Wollongong Yass Kangaroo Valley Wagga GTs Canberra T3 Jindera T1/T2 Snowy Murray hydro Mt Piper Power Station (2 x 700 MW units) Tallawarra GT station (422 MW co-generation) Interconnection capability (MW) Up to 400 Lismore To 1250 Coffs Armidale Harbour Tamworth Muswellbrook Wellington Liddell/Bayswater Newcastle Eraring/Vales/Munmorah Mt Piper/W’Wang Tuggerah Sydney Bannaby Transfer limitations: Marulan Wollongong Yass Kangaroo Valley •Line ratings 1900 1000 Wagga Canberra •Voltage control T3 Jindera T1/T2 •Response to large disturbances Murray •Damping of small oscillations 500 kV Developments To Northern NSW and QLD Muswellbrook Liddell /Bayswater Wellington Newcastle Eraring / Vales Pt/ Munmorah Tuggerah Mt Piper / Wallerawang Sydney Marulan Wollongong Yass Kangaroo Valley Canberra Lower Tumut Upper Tumut Murray To Victoria Present Core System To Northern NSW and QLD Muswellbrook Liddell Wellington Bayswater Newcastle Eraring / Vales Pt/ Munmorah Tuggerah Mt Piper / Wallerawang Sydney Western 500 kV Upgrade Bannaby Marulan Wollongong Yass Kangaroo Valley (Complete early 2010) Canberra Legend Lower Tumut 330 kV Switchyard / Substation Upper Tumut 330 kV Line 500 kV Line Operating at 330 kV Murray To Victoria Lismore Power from Queensland Coffs Armidale Harbour Tamworth Power from Muswellbrook Wellington Liddell/Bayswater NSW Generators Newcastle Eraring/Vales/Munmorah Mt Piper/W’Wang Tuggerah Sydney 10,000 MW 75% of NSW Demand Marulan Wollongong Yass Kangaroo valley 1/3rd of NEM demand Wagga Canberra T3 Jindera T1/T2 Power from Murray Victoria and Snowy Voltage control Line trip 132 kV 1.1 1 0.9 0.8 330 kV 0.7 Volts pu 0.6 0.5 0 20406080100 Seconds Sydney voltage levels Emerging Issues • Part of the need for system reinforcement is to provide adequate voltage control • Voltage stability determined by the dynamic response of the load to disturbances • Potential to co-ordinate control of generators, SVCs and capacitor bank switching • New SVCs – how much reactive support needs to be dynamic and how much can be static To Northern NSW and QLD Liddell Wellington Bayswater Newcastle Eraring/ Vales Pt / Munmorah Mt Piper / Wallerawang Sydney Bannaby Marulan Wollongong Yass Canberra Bannaby – Lower Tumut Sydney 500 kV Upper Tumut Murray To Victoria System Oscillatory Damping QLD QNI NSW SA VIC Dederang First Synchronisation of Queensland System 1/12/2000 First synchronisation on QNI 190 180 170 MW 160 150 140 0 20 40 60 80 100 120 140 160 Seconds MeasuredMeasured power power flow flow on on one one Dederang Dederang - - South South Morang Morang 330kV 330kV ci circuitrcuit in in Victoria Victoria at at the the timetime of of the the first first synchronisation synchronisation of of Queensla Queenslandnd to to the the rest rest of of the the eastern eastern Australian Australian system.system. Springs and masses analogy Central Queensland Southern 275kV Queensland Brisbane 330kV Hunter Valley Port Central Coast 500/330 kV Augusta Central West Sydney Canberra 275kV Adelaide Snowy Hydro Adelaide Metro Melbourne Latrobe 500kV Valley Damping - Progress • Interconnector testing has been undertaken over last 8 years to understand the damping issues and to measure the damping • Steady-state stability modelling indicates that the damping should be better than as measured. • Generator Power System Stabilisers have been tuned • Power Oscillation Dampers fitted to SVCs near QNI • QUT and Don Geddey’s work on deriving damping information from continuous voltage-angle measurements from GPS-synchronised on-line recorders at: – South Pine in Qld, – Sydney West in NSW, – Rowville in Victoria; and – Para in South Australia • On-line measurement is based on the QUT/Geddey (TransGrid) algorithm Sample magnitudeMagnitude spectra spectra of Sydne of (S−B) ydΘ –/dt Brisbane signals during voltage-angle 28−29/5/02 differences 11 10:00 − 14:00 28/5 10 18:00 − 22:00 28/5 02:00 − 06:00 29/5 9 8 SYDNEY - BRISBANE 7 6 5 Magnitude of FT 4 3 2 1 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Frequency (rad/s) Sample magnitude spectraMagnitude spectra of Melbourne of (M−A) dΘ/dt -signals Adelaide during 28−29/5/02 voltage-angle differences 7 10:00 − 14:00 28/5 18:00 − 22:00 28/5 6 02:00 − 06:00 29/5 5 Melbourne – 4 Adelaide 3 Magnitude of FT 2 1 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Frequency (rad/s) 3.5 rad/sec mode eigenvectors (speed states) Victorian vs SA generators SA generators Queensland generators NSW generators Victorian generators 2.5 rad/sec mode eigenvectors (speed states) NSW vs SA & Qld generators Queensland generators NSW SA generators generators Queensland generators 1.8 rad/sec (QNI) mode eigenvectors SA & Victoria vs Qld generators Queensland generators Victorian generators SA generators 11/03 0:00 10/03 12:00 OSM 10/03 0:00 9/03 12:00 9/03 0:00 8/03 12:00 simulated) 8/03 0:00 Data and 7/03 12:00 Original Modelled Measured 7/03 0:00 6/03 12:00 (measured 6/03 0:00 5/03 12:00 damping 5/03 0:00 mode 4/03 12:00 4/03 0:00 rad/s) 3/03 12:00 3/03 0:00 QNI(1.8 2/03 12:00 2/03 0:00 No damping Well damped 1/03 12:00 1/03 0:00 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 ‐ ‐ ‐ ‐ ‐ (Np/s) part real ‐ ‐ ‐ ‐ 0.05 0.15 0.25 0.35 0.45 0.55 0.65 0.75 0.85 ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ Continuing work • Complete checking of all NEM generator models • Switching the SVC Power Oscillation Dampers on and off – to measure their impact • Analysis to estimate the “effectiveness” of the generator Power System Stabilisers and SVC Power Oscillation Dampers QNI(1.8 rad/s) mode damping(measured and modified simulated) 0 ‐0.05 ‐0.1 ‐0.15 ‐0.2 Measured ‐0.25 ‐0.3 ‐0.35 ‐0.4 ‐0.45 (Np/s) ‐0.5 part ‐0.55 real ‐0.6 Modelled with modifications ‐0.65 ‐0.7 ‐0.75 ‐0.8 Modified Paramater: Glad PSS: 0.42; Blackwall POD: 0.38 ‐0.85 OSM ‐0.9 1/03 1/03 2/03 2/03 3/03 3/03 4/03 4/03 5/03 5/03 6/03 6/03 7/03 7/03 8/03 8/03 9/03 9/03 10/03 10/03 11/03 0:00 12:00 0:00 12:00 0:00 12:00 0:00 12:00 0:00 12:00 0:00 12:00 0:00 12:00 0:00 12:00 0:00 12:00 0:00 12:00 0:00 Wind generation – connection and impact WIND FARM RESOURCE LOCATIONS FNQ FNQ – Far North Queensland NQ – North Queensland NEM wind CQ – Central Queensland SWQ – South West Queensland areas FWN – Far West NSW MRN – Murray NSW SEN – South East NSW WN – West NSW MRN – Marulan NSW NQ HUN – Hunter NSW NEN – New England NSW NWV – North West Victoria SWV – South West Victoria SEV – South East Victoria CQ CS – Central South WCS – West Coast SA EPS – Eyre Peninsula SA YPS – Yorke Peninsula SA MNS – Mid North SA SWQ FLS – Fleurieu SA NWT – North West TAS NET – North East TAS WCT – West Coast TAS ST – Southern TAS FWN NEN HUN WCS MNS WEN EPS YPS MRN FLS NWV MRN SWV SEN CS SEV NWT NET WCT ST NSW wind areas FWN NEN HUN WEN MRN MRN SEN NSW wind Farms – operating – 170 MW Lismore Coffs Armidale Harbour Tamworth Muswellbrook Wellington Liddell/Bayswater Newcastle Eraring/Vales/Munmorah Mt Piper/W’Wang Tuggerah Cullerin Range Sydney 30 MW Marulan Wollongong Yass Kangaroo valley Wagga Canberra T3 Jindera T1/T2 Murray Capital 141 MW Wind Farms – inquiries to TransGrid (> 4500 MW) Lismore Coffs 1200 MW Armidale Harbour >1000 MW Tamworth Muswellbrook Wellington Liddell/Bayswater 900 MW Newcastle Eraring/Vales/Munmorah Mt Piper/W’Wang Tuggerah Sydney Marulan Wollongong Yass Kangaroo valley Wagga 1600 MW Canberra T3 Jindera T1/T2 Murray Wind generation – import to NSW Lismore Coffs Armidale Harbour Tamworth Muswellbrook Wellington Liddell/Bayswater Newcastle Eraring/Vales/Munmorah Import from Mt Piper/W’Wang Tuggerah Sydney Victoria and Marulan Wollongong Yass Kangaroo valley South Australia Wagga Canberra T3 Jindera T1/T2 Capital 141 MW Cullerin Range 30 MW Murray TransGrid Wind Farm planning activities • Assessing connection applications • System planning is based on scenario analysis for the future – this includes wind farm development scenarios across NSW • Other work on: – Network modelling and wind traces for market simulations – Developing a wind expansion plan from the market modelling – Aim in the longer-term to rank sites according to connection costs, deep network costs and generation
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