The relevance of large-scale battery energy storage (BES ...
Modernization of the Power System...Battery Energy Storage •Saving or storing energy for use at...
Transcript of Modernization of the Power System...Battery Energy Storage •Saving or storing energy for use at...
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Modernization of the
Power System
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• Founded in 1954
• Publicly traded on two stock exchanges
• TSX, NYSE: STN
• 60 years of uninterrupted profitability
• Gross Revenue: CDN $2.5 Billion (2014)
• More than 400 locations
• Approximately 22,000 employees
• Diverse range of services and sectors
Stantec at a glance
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The Grid: As it’s Always Been
Basic Structure of the Electricity Distribution System
Source: US-Canada Power System Outage Task Force
Generating
Station
Generator Step-up
Transformer
Transmission Lines
765, 500, 345, 230,
and 138KV
Transmission Customer
138KV or 230KV
Substation Step-downTransformer
Secondary Customer120V and 240V
Primary Customer13KV and 4KV
Subtransmission Customer
26KV and 69KV
Key:
Transmission
Distribution
Generation
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Where the Grid is Going:
Distributed Energy
1. WIND
2. SOLAR PV
3. CHP
4. T & D
5. ENERGY STORAGE,
PUMP (HYDRO)
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6. EMBEDDED ENERGY STORAGE
• EV’S
• REFRIDGERATION
• THERMAL
7. ENERGY STORAGE, BATTERY
8. ENERGY STORAGE, FLYWHEEL
9. DSM LOAD MANAGEMENT
10. DISTRICT ENERGY
11. ROOFTOP SOLAR PV
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What’s Driving Distributed Energy?: The Emergence of ‘Microgrids’
‘Microgrids’ is an umbrella term
which covers a very
wide range of
power grid
diversification
CHP
Energy Storage
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What is a Micro Grid
• A discrete energy system containing DG and storage which can run in parallel with the central grid or can run stand-alone (or islanded) from the central grid
• Generation resources are typically located closer to the load
• A backup diesel generator is an example of a traditional micro grid
• Focus today is on micro grids fueled by lower emitting technologies such as solar, wind, hydro, bio-mass and geothermal
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Micro Grid – Uses & Benefits• Highly efficient, mini versions of the larger power grid
• Contains smaller, localized forms of generation, storage, and distribution in a closed or islanded system
• Helps deliver lower costs, more reliable electric supply, storm resiliency, reduced pollution, greater efficiency, community economic development and jobs, and less forfeiture of open space, habitat and aesthetics to big power plants and transmission lines
• Ensures local, reliable power for communities, campuses and buildings
• Provides resiliency in the event of a storm or grid loss
• Provides the ability to relieve grid congestion or to compensate for weaker parts of the grid
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SolarPhotovoltaics
WindTurbine
Controls
Load
Battery
Pumped Storage (Hyrdro)
Microgrid Configurations & Components
Some of the most prevalent components to microgrids are:– Combined Heat & Power (CHP) / Cogeneration systems
– District energy
– Renewables & energy storage
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Opportunity
b. Energy security
c. Lower long term energy costs
d. Lower environmental footprint (GHG)
e. Reduces harmful air pollution (clean air)
a. Abundant energy source
d. Positive sustainable culture and branding
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Global Solar PV Market
• Fastest growing energy source in the world (~50%/yr).
Source: International Energy Agency
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Canadian Solar PV Market
Source: CanSia
• CanSia 2020 roadmap:
• PV to produce 1% of Canada generation (~6,300 MW)
• Creating 65,000 jobs
• Displacing 1.5 million tCO2
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US PV Pricing Forecast
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New Applications
Totem Tesla
Solar RoadwayCiel & Terre
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Battery Energy Storage
• Saving or storing energy for use at another time
• Can be small-scale (electric vehicles) or large-scale (grid-tied storage system)
• When combined with renewable, can make it appear stable and adjustable (like gas and coal)
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Energy Storage - Uses
• Balancing load against generation (load leveling)
• Providing ancillary services to grid operator:
• Providing frequency support / regulation
• Providing voltage support
• Provide grid support in weak areas to defer asset replacement / investment
• Provide peak shaving to reduce facility load use profile and associated energy costs
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Solar PV + Wind + Battery Storage
2. Load balancing
3. Grid support: frequency, voltage, reserve…
1. Peak shaving (load shaving)
4. Diversity of supply
5. Ensures local, reliable power for communities,
campuses and buildings
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Benefits of Renewable Energy in
Remote Communities• Increased system resiliency and
stability
• Primary source of fuel is diesel which is expensive to transport, has high emissions and fuels noisy, disruptive generators
• High variable fuel costs and therefore high electric prices can deter economic advancement in these communities
• Micro grid could incorporate existing hydro and add solar / wind to reduce / eliminate diesel use
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The environmental risks and high costs of diesel generation combined with the
continuing cost reductions in solar, wind, and energy storage technologies is
providing the opportunity for affordable renewable energy alternatives in remote
communities