Juergen Zimmermann, ABB Australia

Transcription

1 ENERGY AND MINES AUSTRALIA SUMMIT; PERTH 29 TH TO 30 TH JUNE 2017 Microgrids The economics of solar & battery energy storage for off-grid mines Juergen Zimmermann, ABB Australia

2 Energy transformation of off-grid mining Incremental hybridization to a low carbon & energy cost future with renewables and energy storage Next few years: Clear business case to further reduce diesel in increments moving towards 100% renewables Status quo: Diesel or gas generation the main provider of off-grid mine electricity Today: Up to 50% fuel reduction possible without subsidies leading to increased shift to renewables ABB supports mining customers to capture the economic and operating benefits along the transformation June 30, 2017 Slide 2

3 Agenda 1. Introduction 2. Story of ABB Microgrid Technology in Australia 3. Microgrid Technology Overview 4. Economic drivers for solar & storage versus diesel 5. Summary June 30, 2017 Slide 3

4 Power and automation Utilities Industry Transport & Infrastructure Digitalisation & grid automation Analytics & operational technologies Microgrids & Renewables Energy storage Power quality & reliability Electrification network equipment Consultancy & whole of life service Productivity Digital optimisation Data integration Automation control systems Industrial Internet of Things Energy efficiency Power quality / reliability Collaborative operations Remote monitoring Motion forecasting Energy efficiency & management Sustainable, electric transport Power quality / reliability Decentralised power generation June 30, 2017 Slide 4

5 ABB in Australia Darwin Revenue Dec 2016 $654 MAUD Orders Dec 2016 $651 MAUD Total workforce 1,350 Headquartered in Sydney with Sales offices and Service centres across Australia supporting all ABB systems and products In Australia, global R&D and technical lead centres for Enterprise Software, Microgrids, Metal Enclosed Capacitor Banks, and Pole Mounted Switches Manufactures LV systems, instrumentation systems and HV capacitors and power quality equipment, and Metal Enclosed Capacitor Banks Perth Western Australia Northern Territory South Australia Adelaide Queensland New South Wales Victoria Geelong Chinchilla ACT Melbourne Gladstone Sydney Brisbane Tasmania June 30, 2017 Slide 5

6 ABB Microgrids in Australia A History of firsts in increasing renewable energy penetration 27 years of building microgrid knowledge 1990 energy efficiency Diesel Battery Storage System PowerWater Corporation 10 sites across NT 60kW storage for spinning reserve % RE penetration Wind Diesel System Western Power Denham Power Station 3 x 230kVA wind turbines % RE penetration Solar Diesel Storage System Marble Bar & Nullagine Stations 300kW SolarPV 500kVA flywheel stabilizing system % RE penetration Solar Diesel Stabilizing System DeGrussa Mine 10MW Solar PV 4/6 MW battery stabilizing system Technology evolved from off-grid to grid-connected Microgrids June 30, 2017 Slide 6

7 ABB in Microgrids Global references with 40+ successfully executed projects Chugach Hybrid Storage Kodiak Island Lanzarote Island Flores Faial Island Island La Gomera Island WEB Aruba Vadodara Marsabit Wind Farm ICRC Logistics Cocos (Keeling) Island Center Shin Chitose Kashiwadai PV Plant Shin Hidaka PV Plant Robben Island Marble Bar Garden Island Longmeadow DeGrussa Mine Laing O Rourke Construction Camp AusNet Services Mawson Station, Antarctica Ross Island, Antarctica June 30, 2017 Slide 7

8 Microgrid: grid-connected versus off-grid systems Common technology platform reduces cost and risk Microgrid definition Distributed energy resources and loads that can be operated in a controlled, coordinated way either connected to the main power grid or in islanded * mode. Microgrids are low or medium voltage grids without power transmission capabilities and are typically not geographically spread out. Grid Operator Can view and control microgrid as a single entity Grid-connected Microgrid Off-grid Microgrid Understanding drivers is key to developing projects June 30, 2017 Slide 8 Islanded mode: ability to provide power independently from the main power grid

9 Microgrid operational goals and power system functions drive choice of technology Operational goals Access to electricity Maximize reliability Uninterrupted supply Reduce environmental impact Maximize renewable energy contribution Fuel & energy cost savings Fuel independence Provide grid services ABB Microgrid Technology Renewable power Microgrid control system Energy storage and grid stabilization Power system functions 8S 1. Stabilizing 2. Spinning reserve 3. STATCOM (Static reactive power compensation) 4. Seamless transition between islanded and grid-connected states 5. Standalone operation 6. Smoothing 7. Shaving 8. Shifting June 30, 2017 Slide 9

10 ABB in microgrids The global microgrid solution partner Leading global expertise Broad portfolio of products & services years experience 40+ executed projects Renewable power Energy storage and grid stabilization Innovation, technology & productization leadership AND Conventional power Microgrid control system Power distribution and protection Global sales & service network Consulting Service 3 rd party financing June 30, 2017 Slide 10

11 Microgrid Integration Technology Increasing renewable penetration requires enhanced microgrid control capabilities Microgrid Integration Technologies Limited control/ basic fuel saving No Renewables control, negative load Controlled system Energy contribution (Fuel reduction) Power penetration (At peak solar/wind) 7-10% 20-30% Power control and optimisation Controlling renewables + generator Power control and forecasting Controlling renewables + generator Power control and grid stabilisation Controlling renewables + generator + storage Power control and load management Controlling renewables + generator + storage + load Power control + energy storage Controlling renewables + storage + load 10-15% 20-50% 15-30% 50-70% 25-40% 100% 60-80% 100% 100% 100% Broad range of technical solutions possible design choice based mainly on economic criteria Slide 11 Note: Percentages vary between wind/ diesel and solar/ diesel

12 Microgrid Plus System The vendor independent Microgrid integration platform ABB Microgrid Controller Solar PV power plant Wind power plant Remote asset management and data analytics Commercial loads Conventional power Distributed control system Residential loads Grid connection Advanced power distribution and protection Industrial loads Modular scalable energy storage and grid stabilization June 30, 2017 Slide 12 Islanded mode: ability to provide power independently from the main power grid

13 PowerStore The modular grid stabilizing system with virtual generator functionality 91kVA to 2850kVA Conventional Generator PowerStore- Virtual Generator Fuel Frequency Control fset Frequency Control fset G ~ fact Vact fact Vact Voltage Control Vset Voltage Control Vset Power Flow Power Flow June 30, 2017 Slide 13

14 Case Study: incremental hybridization of mines Using solar and storage to lower cost of energy Example: remote gold mining operation Power System 5 MW average load 6.3 MW peak load 6 x 1.2 MW diesel generators Business Case Delivered Fuel Cost: $1US/l Solar installed cost: $2US/Wp Average cost of capital: 11% Diesel Parity: Solar LCOE now lower than diesel June 30, 2017 Slide 14

15 We analyzed the benefits of a hybrid power system Four incremental hybridization scenarios 1. Base case Diesel 2. Diesel + BESS 3. Diesel + solar PV 4. Diesel + BESS + solar PV Genset status On On (For reserve) Off Up to 4.5 MWp Up to 8.1 MWp +/- 1.7 MW (2.1 MWh) +/- 4 MW (4.4 MWh) 5 MW avg 6.3 MW p 5 MW avg 5 MW avg 5 MW avg 6.3 MW p 6.3 MW p 6.3 MW p Remote mine Remote mine Remote mine Remote mine Generators can be off during daytime 6 generator system (1.2 MW each) 1 generator equivalent required as operating reserve at all times All generators that are on typically operate at same level BESS removes need for operating capacity BESS can also delay or remove need to start up a generator during short term peaks Solar PV size limited in this case due to generator ramping limitation Additional generators must stay online in case of shading for 75% of solar production (potential reductions when using advanced forecasting) BESS provides required ramping During daylight hours all generators can be shut down completely June 30, 2017 Slide 15

16 ABB Microgrids: 30 to 50% fuel reductions today Lower solar PV and storage costs remove need for subsidies ABB references already show 30 to 50% fuel reduction possible DeGrussa Min, PV/ Diesel stabilizing system ~50% diesel saving opportunity 10MW Solar PV 4/6 MW battery stabilizing system Rapidly decreasing Solar PV costs supporting business case Global Large Commercial PV system prices (1 to 5MW) USD/ Wp Marble Bar & Nullagine, PowerStore/ PV/ Diesel Generates 1,048 MWh PV/ year Saves 35-40% diesel consumption per year % Johannesburg, PowerStore/ PV/ Diesel Up to 50% reduction in electricity bills and fossil fuel consumption PV prices have reduced over 30% in past 2 years and continue to fall globally 2021 Commercial and utility scale systems reducing faster than household solar with the $1/Wp already reached for utility scale 1 Slide 19 Source: IHS PV Demand Market Tracker - Q

17 Summary Microgrids with solar or storage have lower cost of energy ABB a trusted technology partner 1. Technical integration of solar with diesel and storage is proven 2. Installed cost in remote sites of solar continues to fall 3. Commercial integration (lowering cost and risk) through new business models 4. Single point of technology responsibility for solar/diesel/storage from DC of solar panel to the Generator controller and battery storage 5. Ability to integrate brownfield or greenfield sites Installation Supervision & Commissioning After sales service Technology Supply Consulting Simulation & Test Design & Engineering Diesel parity: Solar has lower cost than diesel June 30, 2017 Slide 20

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