Appendix A - Intermittency workshop program

MORNING – Monday April 4, 2011
10:00-10:15am Welcome – Mark Amos, ENA
10:15-10:30am Introduction – Mark Paterson, CSIRO
1) RENEWABLE RESOURCE CHARACTRISATION
10:30-11:00am 1.1 Solar resource variability and uncertainty – what do we know?
Gavin Street, BP Solar
What data do we currently have and with what resolution (time and space)?
How does geographical diversity affect variability of renewable generation?
Variability comparison of PV, CSP and wind
What are expected or typical capacity factors?
11:00-11:30am MORNING TEA
11:30-12:00noon 1.2 Forecasting renewable resource
Kate Summers, Pacific Hydro
Forecasts for different time horizons
Short-term forecasts by observing clouds. Use of sky imagers to indicate approaching clouds
Longer-term forecasts by using numerical weather models to predict solar insolation for multiple days ahead
Effect on planning – optimal size, positioning, etc
2) NETWORK ISSUES AND CONCERNS
12:00-12:30pm 2.1 Distribution level
Mark Amos, ENA
With current level of solar penetration, what are the current issues and how are they impacting the Australian distribution systems?
Impact on total net load at points of supply, has there been an observable increase in load variability in association with solar penetration?
Impact on voltage regulation, power quality, etc
Likely impacts with integration of solar power on a larger scale from utilities’ perspective
What is the accepted penetration limit of solar/renewables? Can this figure be referenced?
12:30-1:30pm LUNCH
AFTERNOON – Monday April 4, 2011
1:30-2:00pm 2.2 Transmission level
Dr. Zoran Bozic, Western Power
Is the intermittent nature of solar power affecting transmission systems with current level of solar penetration? If yes, what are they and how are they impacting the Australian transmission systems and market operation?
Impact on power system frequency, voltage regulation, power quality, capacity reserves, etc
Likely impacts of solar power integration on a larger scale
3) GRID EVENTS AND VARIABILITY MANAGEMENT
2:00-2:30pm 3.1 Variability of solar output due to grid events
Max Rankin, SP AusNet
Step changes in solar output occurring from simultaneous inverter trips
Monitoring of such drop-outs by installers
Utility solar case studies
2:30-3:00pm 3.2 Managing intermittency
Ben Skinner, AEMO
Mitigation techniques
Energy storage systems
Load management possibilities and ways of minimising energy storage needs
Capabilities for dispatch
3:00-3:30pm AFTERNOON TEA
4) OPEN FORUM – INDUSTRY SOLAR INTERMITTENCY ISSUES SOUGHT
3:30-4:30pm Perspectives from:
•Utilities
•Power system operators
•Large-scale renewable system operators
•Other industry players?
5. OPEN DISCUSSION OF NEXT STEPS
4:30-5:00pm What happens now?
5:00pm END of Workshop