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Photovoltaic systems in a distribution network

Photovoltaic systems in a distribution network. Greg Elkins - 2014 Chair Townsville Regional Group Engineers Australia. Typical Distribution Network without PV. Distribution with PV. Network Quality Management Distribution Voltage Levels. Typical Domestic Load Profile.

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Photovoltaic systems in a distribution network

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  1. Photovoltaic systems in a distribution network Greg Elkins - 2014 Chair Townsville Regional Group Engineers Australia

  2. Typical Distribution Network without PV

  3. Distribution with PV

  4. Network Quality ManagementDistribution Voltage Levels

  5. Typical Domestic Load Profile

  6. Actual Load Profile Winter

  7. Actual Load Profile Summer

  8. Load Profile with Solar PV Summer

  9. Load Profile with Solar PV Winter

  10. Typical Load Profile

  11. IES Application Approval

  12. Identify Path

  13. Determine Network Impedance

  14. Calculate Voltage Rise

  15. Distribution Planning and Design The Distribution Network and Embedded PV Generation PV Installations (kW) Ergon Energy – growth in PV – 4 MW in June 2008 to 110 MW in June 2012

  16. Distribution Planning and Design The Distribution Network and Embedded PV Generation Energex still adding around 10 MW per month in 2013 Energex – growth in PV – 8 MW in June 2009 to 150 MW in June 2011

  17. Distribution Planning and Design The Distribution Network and Embedded PV Generation Comparison of ActewAGL and Energex – December 2011

  18. Distribution Planning and Design The Distribution Network and Embedded PV Generation Energex – growth in PV – 220,000 connections and 670 MW at 30 June 2013

  19. Distribution Planning and Design The Distribution Network and Embedded PV Generation Elanora – Gold Coast Queensland - Australia

  20. Distribution Planning and Design The Distribution Network and Embedded PV Generation Elanora – Gold Coast Queensland – January 2010

  21. Distribution Planning and Design The Distribution Network and Embedded PV Generation Elanora – Gold Coast Queensland – June 2012

  22. Distribution Planning and Design The Distribution Network and Embedded PV Generation • PV Generation Challenges for Distribution Networks (and Opportunities for GHD) • Technical • Voltage Management • Intermittency • Quality of Supply

  23. Distribution Planning and Design The Distribution Network and Embedded PV Generation • PV Generation Challenges for Distribution Networks (and Opportunities for GHD) • Technical • Voltage Management • Intermittency • Quality of Supply • Philosophical • Traditional focus on customers extracting energy from the network • Increasing focus on customers supplying energy to the network

  24. Distribution Planning and Design The Distribution Network and Embedded PV Generation • PV Generation Challenges for Distribution Networks (and Opportunities for GHD) • Technical • Voltage Management • Intermittency • Quality of Supply • Philosophical • Traditional focus on customers extracting energy from the network • Increasing focus on customers supplying energy to the network • Political • Exponential growth in PV uptake in the past two years (Feed In Tariffs) • PV Customer is a voter and wants maximum advantage • Commercial and Industrial energy service still requires a network

  25. Distribution Planning and Design The Distribution Network and Embedded PV Generation • PV Generation Challenges for Distribution Networks (and Opportunities for GHD) • Technical • Voltage Management • Intermittency • Quality of Supply • Philosophical • Traditional focus on customers extracting energy from the network • Increasing focus on customers supplying energy to the network • Political • Exponential growth in PV uptake in the past two years (Feed In Tariffs) • PV Customer is a voter and wants maximum advantage • Commercial and Industrial energy service still requires a network • Financial • Death Spiral – who pays for the network when residential customers consume less or even zero net energy from the grid?

  26. Distribution Planning and Design The Distribution Network and Embedded PV Generation 2009 2010 2011 2012 Energy flow on 11 kV feeders – potential for reversal of flow due to PV

  27. Distribution Planning and Design The Distribution Network and Embedded PV Generation Swell (High Voltage) Related Quality of Supply Enquiries as a Percent of Total Enquiries

  28. PV Array Schematic

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