Smart Grid, Smart City - Engineers Australia...Smart Grid, Smart City 10th April 2014 Engineers...
Transcript of Smart Grid, Smart City - Engineers Australia...Smart Grid, Smart City 10th April 2014 Engineers...
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Smart Grid, Smart City
10th April 2014
Engineers Australia – Chatswood
Electrical Branch
Paul Myors Viriya Chittasy
Ceramic Fuel Cells and the Smart Grid
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1. Smart Grid, Smart City Program Overview
– The Distributed Generation and Distributed Storage
(DGDS) stream
2. BlueGEN Ceramic Fuel Cell Trial
– Fuel Cell Technology
– Trial details and implementation issues
3. Trial Results and Analysis
4. Next Steps
Topics
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Smart Grid, Smart City
Program Overview
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• $100 million Australian Government Initiative – Dept. of Resources,
Energy & Tourism
• Consortium led by Ausgrid with partners including IBM, GE Australia,
CSIRO, Transgrid, Gridnet, City of Newcastle, City of Lake Macquarie,
Hunter Water, Sydney Water, University of Newcastle, University of
Sydney
• Late 2010 to September 2013
The Smart Grid, Smart City Project
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• Rollout of key applications and technologies to test the
business case for smart grids
• Build public, corporate and industry awareness of the economic
and environmental benefits of smart grids
• Gather real data and information to drive broader industry
adoption of smart grid applications across Australia
• Investigate opportunities with other utilities (e.g. gas, water and
the National Broadband Network)
The Smart Grid, Smart City Project
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• Communication, sensing and control technologies installed
alongside the electricity network
• Real-time information to energy distributors efficient network
management
• Improved collection of customer consumption data with smart
meters customer control over power usage
• Distributed generation and storage technologies - managing the
increased uptake
What is a Smart Grid?
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Intermittent Generation
Steady State Generation
Management of DG, DS
Impact of islanding
Managing peak
consumption
Grid connection
issues
• Customer Applications
• Grid Applications
• Interoperability
• Information Dissemination
• Distributed Generation and
Distributed Storage
Streams
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Rural Trials - Upper Gundy Generation: Small wind turbines
Storage: Domestic batteries
Urban Trials - Elermore Vale Generation: Gas fuel cells, small wind turbines,
solar PV systems
Storage: Domestic batteries
Suburban Trials - Newington Generation: High penetration of domestic solar PV
systems
Storage: Grid battery
DGDS Trial Sites
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BlueGEN
Ceramic Fuel Cell
Trial
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• Investigate the potential for controllable distributed generation to
provide improvement in the following:
– Reliability of electricity supply
– Efficiency of energy supply
– Customer energy costs
Fuel Cell Trial Criteria
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How a Ceramic Fuel Cell Works
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Manufacturer Specifications:
• 60% electrical efficiency
• Up to 70% less carbon emission than coal power.
• Can supply continuously 24/7
• Up to 200 litres of 'free' hot water daily
• Australian owned and designed
BlueGEN Natural Gas Ceramic Fuel Cell
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BlueGEN Configuration
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• No gas connection readily
available or gas connection
information unavailable
• Finding volunteers supplied by
the required distribution centre
• Insufficient space, particularly
in medium / high density housing
Site Selection Issues
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• Site access difficulties
• Retaining customer hot water temperature preferences
• Piping requirements
• Coordinating customer, vendor, electrician, plumber etc.
Installation Challenges
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BlueGEN
Results and Analysis
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• Electrical Performance, Thermal Performance, Customer Benefits
• 15 months of data, Dec 2011 to Feb 2013
• Data collection by:
– Metering data
– BlueGEN monitoring
– Ausgrid monitoring
Results & Analysis Overview
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1.5kW operation: 52.6%
0.5kW operation: 35.8%
Modulated*: 39.8%
*1.5kW for 4 hrs per day and 0.5kW at other times
Manufacturer: 60% elec. efficiency for 1.5kW operation
Electrical Efficiency
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BlueGen: η = 39.8%
Stack Replacements
11 Nov 2012
1.5kW: 0.9%
drop in
efficiency
per month
Electrical Efficiency
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Generation Profile
90% of the time > 95% rated output
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BlueGen: η = 39.8%
Modulated Output: Typical Day
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Modulated Output: Net Reduction
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• Recovered heat from the fuel cell stack
• Used for hot water in this trial (available for spatial heating)
Waste Heat Recovery (WHR) System
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Energy Split
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Metric (Avg Daily) Measurement
Hot Water (HW) Used (L) 236L (range: 180L-320L)
Effective WHR Heat for HW (MJ) 6.0
Gas Booster Heat Energy (MJ) 12.6
Tank Input Temperature 15ºC
WHR Temp. Increase 20ºC
Energy Saved (%) 32%
HW Usage and System Measurements
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WHR Energy and Hot Water Usage Level
743L 57.1MJ
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Manufacturer: 25% increase to energy efficiency (1.5kW)
85% total energy efficiency
Results from best performing site:
Total Energy Efficiency: 61.4%
Thermal Efficiency
Thermal efficiency: 8.8%
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1) Estimated Energy Running Costs
2) Operation Assessment: installation, operation level,
tariff, gas prices, normal load profile vs. high load
profile
Customer Benefits
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1.5kW operation
Potential Energy Running Costs - Trial
Assumption: All electricity generated used on site
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Assumption: All electricity used on site
BlueGen
1.5kW (NC)
BlueGen
1.5kW
(Albury)
Elec
Import
1.5kW
c/kWh 13.92 11.22 23.81
Per Day $5.01 $4.04 $8.57
Per Month $155.31 $125.24 $265.67
Per Year $1,829 $1,475 $3,128
• 41.5% saving for Newcastle (NC)
• 52.8% saving for Albury 1.5kW BlueGen
• 1.7% loss for 0.5kW BlueGen in NC
Estimated Energy Running Costs
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Investigation of options and factors:
Installation
• Net metered or gross metered
Operation Level
• Continuous
• Modulated Operation
Tariff Conditions, Gas Costs
• Time of Use vs. Inclining Block
• Gas price
• Export rate
Operation Assessment
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Installation
• Net metered
• Location selection based on gas costs
Operation Level
• Continuous and full capacity: most efficient
Tariff Conditions
• Inclining Block for high load profile
• Export rate
Key Driver: Reduce import costs >> income from feed-in
Operation Assessment Results
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Newcastle/Albury Net Metered Gross Metered
TOU (7c/kWh feed-in) +6% +34% -67% -39%
TOU (15c/kWh feed-in) +56% +84% +8% +36%
Inclining Block (7c/kWh
feed-in)
+6% +34% -72% -42%
Inclining Block
(15c/kWh feed-in)
+56% +84% +9% +39%
Not affected by tariff: net export
Cost saving(+) or loss(-) by scenario at 1.5kW:
Operation Assessment:
Household Consumption of 12kWh/day
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Newcastle/Albury Net Metered Gross Metered
TOU (7c/kWh feed-in) +19% +24% -12% -7%
TOU (15c/kWh feed-in) +21% +26% +1% +6%
Inclining Block (7c/kWh
feed-in)
+22% +27% -12% -7%
Inclining Block
(15c/kWh feed-in)
+35% +40% +1% +6%
Cost saving(+) or loss(-) by scenario:
Operation Assessment:
Household Consumption at 58kWh/day
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Operation Assessment: Modulated Case
1% Saving to
customer, but
Grid benefits
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• 52.6% electrical efficiency at full power, 61.4% total
energy efficiency (including thermal)
• Reduces imported energy costs
• Key factors: installation cost and complexity, gas
price, electricity tariffs (including export)
• 6%-20% cost savings at 1.5kW fuel cell operation (in
Newcastle)
• Suited to constant load (efficiency loss with load
following/dynamic control)
• Suits customers with large baseload
Key Results
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Publicly available reports and data:
www.smartgridsmartcity.com.au
• Measurement and Monitoring Report
• Information Clearing House (ICH) data available
What’s Next?
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Questions