290 likes | 521 Views
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.
E N D
Photovoltaic systems in a distribution network Greg Elkins - 2014 Chair Townsville Regional Group Engineers Australia
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
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
Distribution Planning and Design The Distribution Network and Embedded PV Generation Comparison of ActewAGL and Energex – December 2011
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
Distribution Planning and Design The Distribution Network and Embedded PV Generation Elanora – Gold Coast Queensland - Australia
Distribution Planning and Design The Distribution Network and Embedded PV Generation Elanora – Gold Coast Queensland – January 2010
Distribution Planning and Design The Distribution Network and Embedded PV Generation Elanora – Gold Coast Queensland – June 2012
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
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
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
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?
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
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