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REMOTE AREA POWER SUPPLY CONFERENCE - SYDNEY , 21-22ND MARCH 2017
Microgrid Design Tools & ProcessesFrom small remote community to large industrial mine site
Juergen Zimmermann, ABB Australia
1. ABB Australia
2. Story of ABB Microgrid Technology in Australia
3. Managing integration risk & cost
Case Study of 100kW Product approach
Case Study of 30MW Solutions approach
4. Summary
March 21, 2017 Slide 2
Agenda
March 21, 2017 Slide 3
A global leader in power and automation technologies
Power & Automation
Utilities Transport & InfrastructureIndustry
Renewables
Grid automation / digitalization
Microgrids
Smart upgrades
Electrification penetration
Energy storage
Productivity
Energy efficiency
Automation penetration
Internet of Things, Services and People
Power quality / reliability
Emerging markets
Urbanization
Data management
Electric transport
Energy efficiency
Power quality / reliability
Decentralized power generation
Power & Automation “for the site”Power & Automation “for the grid”
ABB Australia in brief
March 21, 2017 Slide 4
Headquartered in Sydney, New South Wales
Orders 2016: $651M AUD
1,345 employees
In Australia, global R&D and technical lead centres for Enterprise Software, Microgrids and Metal Enclosed Capacitor Banks
Manufactures LV systems, instrumentation systems and HV capacitors and power quality equipment, and Metal Enclosed Capacitor Banks
Sales offices and Service centres across Australia supporting all ABB systems and products
Enabling cost effective and resilient access to power supply
March 21, 2017 Slide 5
Microgrids in energy and grid transformation
Power grid
Power grids are larger conventional and
spread out grids with high voltage power
transmission capabilities.
Microgrid
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.
Nanogrid
Low voltage grids that typically serve a single
building
Focus on System Integration and Grid Stabilization
March 21, 2017 Slide 6
ABB in Microgrids
A History of firsts in increasing renewable energy penetration
ABB Microgrids in Australia
March 21, 2017 Slide 7
1998 – 40% RE penetration
– Wind Diesel System
• Western Power
• Denham Power Station
• 3 x 230kVA wind turbines
2016 – 50% RE penetration
– Solar Diesel Stabilzing System
• DeGrussa Mine
• 10MW Solar PV
• 4/6 MW battery stabilizing system
1990 – energy efficiency
– Diesel Battery Storage System
• PowerWater Corporation
• 10 sites across NT
• 60kW storage for spinning reserve
2010 – 100% RE penetration
– Solar Diesel Storage System
• Marble Bar & Nullagine Stations
• 300kW SolarPV
• 500kVA flywheel stabilising system
Today ABB has delivered over 40 Microgrids globally
27 years of building Microgrid Knowledge
Transition from a centralized to a distributed grid
March 21, 2017 Source: EY – KGSA Microgrid conference October 2015 Slide 8
Global energy trends
Trends relating to Microgrids
- Solar PV installed costs are continuing to reduce with experience from installations
- Cost of Storage continue to decrease with increase in production volumes and supply chains establishing
- New entrants to market challenge industry practises by introducing new technology
- New business models attract investors to own and operate assets on behalf of utilities and mining companies
- Government support shifting from RE to enable higher penetration of RE through storage and grid integration
What is the challenge?
Microgrid Design Tools & Processes
March 21, 2017 Slide 9
Design standards
Procurement process
2
4
Diversity of Sites
Opportunities for optimized integrated designs between suppliers
– Once off designs lead to higher costs
1
…leading to high integration cost and risk
Supply chain integration
3
Fixed procurement processes do not allow for close collaboration
– Risk of unknown is costed into projects
Every site is different
– High project development and execution cost; understand business case
Lack of Microgrid Integration and Storage design standards
– Increase in engineering cost to write and comply with specifications
Two approaches
Managing System Integration Risk
March 21, 2017 Slide 10
Modular design with configurable functions
1. Product data sheet and model library define performance
2. Interfaces and functions configurable; type tested and future software updates available
3. Product support through a service team
• Product may not fit all project requirements
Apply known power system design processes
1. Engineering process delivers a set of specifications and performance standards
2. Control interfaces (diesel, solar, battery, remote) are customized and often require onsite testing
3. System support depends on specialist who customized/commissioned the system
• Project/Customer needs designed into solution
ABB Microgrid Offering includes Products and Solutions
Product: 100kVA to 500kVA Solution: 1MVA to X0MVA
Modular storage system with built in Microgrid Functionality
Case Study: PowerStore with Microgrid Automation
March 21, 2017 Power ratings are continousSlide 11
– 6 power ratings from 90kVA to 540kVA
– Storage times from 0.5 to 2 hours
– Modular Indoor/Outdoor enclosure
– Compact design for LV grid connection
– 200% overload capability
Lower cost through standard design
Virtual Synchronous Generator
Standard Interfaces and configurable applications
Case Study: PowerStore with Microgrid Automation
March 21, 2017 Slide 12
Stabilize Power & Store Energy
– Inbuilt AVR for voltage control
– Inbuilt Governor for frequency control
– System inertia function
– Parallel Operation of multiple PowerStore
– Allows standalone and blackstart operation
Applications
– Diesel & Storage
– Diesel & Storage & Solar
– Diesel & Solar
Lower Integration risk
Virtual Synchronous Generator
Simplified design process and improved business case
Case Study: PowerStore with Microgrid Automation
March 21, 2017 Slide 13
– Use HOMER modelling tool to size system components
• Solar PV array
• PowerStore kVA and kWh
• Battery power profile
– Manage control interface by using
• OEMs specific diesel interface
• Fixed battery interface
• Open standard for SolarPV interface
– Manage function/software integration by
• Using ABB control software within HOMER Energy
Lower risk and cost lead to improved business case
Solar Diesel System Design
CapExSolar Resource
Fuel price
Sensitivity Analysis of Solar/Diesel/Storage
IRR
Use of standard power system design processes to minimize integration risk
Case Study: 30MW Battery Energy Storage for offgrid mining load
March 21, 2017 Slide 14
Requirements
– Online Gas Turbine to be replaced with battery energy storage system
– BESS needs to integrate with existing gas turbines to share active and reactive load
– In the event of a GT trip BESS needs to operate standalone
Business Case
– 2to/hr fuel gas savings
– Gas @ $7/GJ
– App. $10-15Mill savings per annum
Payback time <5 years
Application: Spinning Reserve for Gas Turbine
Main building blocks
30MW/15min PowerStore System
March 21, 2017 Battery Container image KokamSlide 15
Battery Containers
– 5 x 40ft containers
– 4C/1.5 MWh each 40ft
Integration System
– ABB Microgrid Plus System to integrate
• 4 x Gas Turbines
• 5 x PowerStore Battery
• Interface to onsite SCADA system
PowerStore Containers
– 5 x 40ft containers
– 6MVA peak each 40ft
Transformers and Switchgear
– 5 x 0.37/33kV PStore unit transformers
– 1 x 33/66kV power transformer
– 33kV Switchboard
Complex system integration into existing power station
Single Line Diagram
PowerStore 30MW/15min
March 21, 2017 Slide 16
Title 33kV Switchboard
Multidisciplinary teams required to deliver cost optimized design
Engineering Design Tools and Processes
March 21, 2017 Slide 17
33kV/66kV/132kV
– Pstore Unit transformers
– Main power transformers
– Protection system
– Earthing system
– Local light & power supply
– Site testing setup
..how long is a piece of string?
– Obtain verified models of existing generation plant
– Provision of Data Sheets, User Guides, Dynamic Models, Source code, confirmation tests, R2 tests
– Loadflow, Dynamic, protection and EMT modelling
– Negotiate generator performance standards
Getting quality baseline data
– Identify existing control system issues
– Work from Concept to Functional Specification
– Define test cases and commissioning setup
– Determine KPIs of system performance
– Future expansion?
– Design Communication System
Understanding site conditions
– Space constraints
– Allowance for expansion?
– Site fire management
– Transport & Logistics
– Working within an operational power plant
….not just a matter of buying a battery
Electrical Design Power System Modelling Integration Design Site Layout & Civil Design
Managing Microgrids System Integration Risk and Cost
Summary
March 21, 2017 Slide 18
Business case drives requirements for each site
– Product approach
• Known business cases allow short project development time
• Integration simplified through standard interfaces
• Modular integrated battery & inverter design reduces cost
– Solution approach
• Power System integration issues can be managed by using common industry tools
• Understand the baseline; how is the system really operating today and have existing models been verified?
• Collaborate to identify how value of BESS can be monetized
ABB delivers Products and Solutions supported by a local engineering team
Two approaches using Products and Solutions
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