Energy market bid & dispatch under high renewables futures

2:00 – 4:00pm

Associate Professor Evan Franklin
University of Tasmania School of Engineering


This will be an interactive tutorial / workshop aimed at giving participants familiarisation with wholesale energy market bidding systems used for coordinated dispatch of generation, including under scenarios of high renewable generation and with locational effects and constrained interconnects. A brief introduction to the basic bidding and dispatch system (as used in the Australian NEM) will first be given, followed by a hands-on ‘game’ that will see groups of participants acting as ‘market players’ and competing for profit over a number of energy market dispatch intervals and system conditions.

Evan Franklin is an Associate Professor in the Centre for Renewable Energy and Power Systems in the School of Engineering and is Co-director of the Future Energy group at the University of Tasmania. Evan graduated with BE (Hons 1) from the University of Tasmania in 1996 and PhD from The Australian National University in 2006. He has authored over 95 journal papers, conference papers and patents, and brings unique insights from experience working in industry. His research interests include the integration of renewable energy generation into distribution networks and power systems, and the role of energy storage in future energy systems.

Evan has two young children who are both fans of board-games, and so Sunday afternoons are very often filled with game playing. Why should Sunday 29 November be any different… 😉

Using scenarios to explore potential futures for our energy systems

11:00 – 1:00pm

Cameron Potter, Ph.D
Australian Energy Market Operator


This tutorial will explore the use of scenarios as a tool to better appreciate the potential range of futures that our energy systems may face. It will look into the benefits of scenario-based planning, and also recognise some of the challenges that it can present. Examples of scenarios and scenario development approaches will be shared to help the attendees understand the practical applications of this in real world situations. Having been introduced to the concepts of scenario development the tutorial will end in a workshop-style session where the participants will collaboratively develop a range of scenarios according to a range of possible dimensions before thinking about the likely consequences of those scenarios – and the implications of using those scenarios to understand the future energy system.

A passion for data driven decision making and being at the edge of new technology has driven Cameron’s career. Cameron has championed risk-driven analysis of renewable energy, power stem integration studies, and research and product development related to wind and solar energy modelling for commercial and/or government purposes. In 2020 Cameron joined the Australian Energy Market Operator (AEMO) as the Stream Lead – Sector Coupling and is actively working to understand the potential changes in Australia’s energy sectors as our electricity sector goes through a transformation.

DER Flexibility

25 November 2020 | 12:00 – 2:00pm

Professor Pierluigi Mancarella
Veski Innovation Fellow, University of Melbourne


The aim of this tutorial is to present the main techno-economic concepts about provision of power system flexibility, reliability and resilience from distributed energy resources (DER).
Specific topics that will be covered include:

  • Modelling of DER for flexibility study purposes, including different types of distributed/embedded generators (e.g., photovoltaic, gas, diesel, and combined heat and power generators), storage (e.g., batteries, electric vehicles, thermal storage), and demand response (e.g., smart appliances, building-to-grid flexibility, hydrogen electrolyzers) resources;
  • DER aggregation modelling and orchestration under different concepts such as power nodes, virtual power plants, community energy systems, and microgrids;
  • Techno-economic characterization of the flexibility of individual DER and DER aggregations, with consideration of different metrics;
  • Generalization of DER to the emerging concept of distributed multi-energy systems (which also entail interaction with other energy vectors such as heat, cooling, hydrogen, etc.) and modelling of multi-energy flexibility via the recently proposed concept of multi-energy node;
  • Use of DER flexibility to provide market, security and reliability services, to support both system operation (e.g., energy arbitrage, frequency control ancillary services, fast frequency response, reactive power and voltage support) and planning (e.g., DER contribution to supply and network adequacy and capacity markets, displacement of network asset, firm-up of renewables and capacity credit assessment);
  • Use of DER flexibility to provide resilience services to deal with extreme, high-impact low-probability, events (again for both operation and planning);
  • Modelling and assessment of DER in the interaction with distribution system operators and at the interface with transmission system operation;
  • Discussion of technical, commercial and regulatory barriers to DER widespread adoption;
  • Case studies from a number of recent projects in Australia, UK, Europe, Malaysia and Chile.

A full list of relevant references and toolboxes will also be provided.

Pierluigi Mancarella is Chair Professor of Electrical Power Systems at The University of Melbourne, Australia, and Professor of Smart Energy Systems at The University of Manchester, UK. He received his MSc (2002) and PhD (2006) degrees from the Politecnico di Torino, Italy, worked as a post-doc at Imperial College London, UK, and held visiting positions in the US (NREL), France (Ecole Centrale de Lille), Chile (University of Chile), and China (Tsinghua University). Pierluigi’s research interests include techno-economic modelling of low-carbon grids, multi-energy systems, energy system planning under uncertainty, and reliability and resilience of future networks. He has been involved in/led more than 50 research projects worldwide and actively engaged with energy policy in the UK, Europe and Australia, and is author of several books and of over 300 research publications and reports.

Solar PV integration challenges and opportunities

24 November 2020 | 12:00 – 2:00pm

Professor Tapan Saha, Dr Richard Yan (Senior Lecturer and DECRA Fellow) and Dr Feifei Bai (Advance Queensland Fellow)


Recently, utility-scale photovoltaic (PV) plants in remote areas are drastically increasing due to abundant and low-priced land. These remote areas are usually connected to zone substations through long weak feeders with open-delta step voltage regulators (SVRs) to regulate downstream voltages. However, distribution grids in such areas traditionally have feeders with low X/R ratios, which makes the independent reactive power compensation method less effective on voltage regulation. Consequently, upstream SVR may suffer from excessive tap operations with PV-induced fast voltage fluctuations. Although a battery energy storage system (BESS) can successfully smooth PV generation, frequent charge/discharge will substantially affect its cost effectiveness. In this tutorial, these solar PV integration challenges will be addressed and corresponding solutions will be discussed. This tutorial will provide valuable insights and applicable strategies to both utilities and PV owners for large-scale solar PV integration into distribution networks.

Ruifeng (Richard) Yan

Dr Ruifeng Yan was awarded with Ph.D in Electrical Engineering at the University of Queensland (UQ) in 2012, and at the same time his Ph.D research has won UQ Dean’s Award for Research Higher Degree Excellence. He has worked as a Research Fellow in School of Information Technology and Electrical Engineering and Global Change Institute for 5 years. In 2018, Dr Yan has been awarded with ARC DECRA (Australian Research Council Discovery Early Career Researcher Award), which is the most prestigious award in Australia for young researchers. His main research interest is integration of high penetration of wind and solar PV into power networks. He has published 34 top-tier journal articles, which are published by IEEE Transactions, Elsevier and IET. Also, he is actively engaging with Australian power industries over several projects, such as AEMO, Energy Queensland, Noja Power, Hydro-Tasmania and EPEC Group.

Feifei Bai

Feifei Bai received her PhD degree from Southwest Jiaotong University, China in 2016. During her PhD study, she did PhD research in the University of Tennessee at Knoxville, USA from Sep. 2012 to Dec. 2014. She joined the University of Queensland (UQ) in 2016. Currently, she is an Advance Queensland Research Fellow with the School of Information Technology and Electrical Engineering at the UQ, Australia. Her research interests include renewable energy integration, PMU applications in distribution networks, data-driven small signal stability analysis and control, and renewable energy hardware-testbed development.

Tapan Saha

Professor Tapan Saha received his PhD from the University of Queensland in 1994. He has been with the University of Queensland since 1996, where he has been a Professor of Electrical Engineering since 2005. Professor Tapan Saha is a Fellow of the Institute of Electrical and Electronic Engineers (IEEE) and the Institution of Engineers Australia. He is a Chartered Professional Engineer (CPEng) of Engineers Australia and a Registered Professional Engineer of the State of Queensland (RPEQ). His main research interest is in integration of high penetration of wind and solar PV into power networks and condition monitoring electrical assets. He has published more than 600 articles in peer reviewed transactions and conferences. He is the founding Director of Australasian Transformer Innovation Centre, Leader of UQ Solar and Leader of Industry 4.0 UQ Energy TestLab.

Power system operation with high-share of grid connected and distributed inverter-based resources

23rd November 2020 | 12:00 – 2:00pm

Manager, Operational Analysis and Engineering, AEMO

“Power system operation with high-share of grid-connected and distributed inverter-based resources”

Topic 1: Power system modelling: present and moving forward

This presentation will provide a brief overview of the inherent modelling differences between synchronous generation and asynchronous generation, how wide-area EMT models are increasingly required to provide a realistic representation of power system dynamics in a grid dominated by inverter-based resources, and how traditional RMS models are proving to be inadequate or overly optimistic when performing transient stability studies. Limitations of both RMS and EMT models will be discussed, along with an overview of the initiatives currently taking place to address the new challenges posed by the adoption of EMT models for transient stability analysis, and the perspective of international Independent System Operators on the issue.

Topic 2: New and emerging bulk power system security challenges

The generation mix across the National Electricity Market (NEM) of Australia is changing rapidly over the last few years. This increases the complexity of operating one of the longest power systems of the world and present unprecedented operational challenges due to increased penetration of inverter-based resources (IBR). Large update in transmission and distribution connected IBR often results into early retirement or mothballing of traditional synchronous generators which provide some of the system security services such as inertia, contribution to system strength, voltage and frequency control. With change in generation mix these services are required to be sourced from new technologies. The majority of IBR in the NEM are located in remote areas of the grid, typically far from load centres and conventional synchronous generators. Being in remote and weak part of the network a small reduction in system strength either during a planned or forced outage of a network element could manifest into system security issues.
This presentation will discuss some of the technical challenges associated with integrating large amount of IBR into relatively weak part of the network. The presentation will show real life example of emerging bulk power system security challenges and some of the solutions to address them.

Topic 3: New and emerging power system security challenges caused by distributed energy resources

Distributed PV is growing rapidly in the National Electricity Market (NEM), and minimum demand levels are reducing. South Australia is forecast to reach zero megawatts of operational demand in the next year or two, with enough distributed PV operating to meet the entire demand of the region. What will this mean for the operation of the power system? What measures need to be put in place to ensure we can continue to operate a secure and reliable power system? This presentation will cover AEMO’s investigations into power system operation in periods with low demand and high levels of distributed PV, discussing emerging power system security challenges such as distributed PV disconnection in response to transmission faults, the need for distributed PV curtailment capabilities to be able to maintain minimum levels of synchronous generating units online for system strength and inertia, and impacts on under frequency load shedding schemes.

Topic 4: System restoration: present and moving forward

This session will cover how AEMO prepares and implements restoration of the power system when a wide-scale blackout occurs in the NEM, including:

  • The challenges associated with recovering from wide-scale blackouts.
  • What AEMO currently has in place to assist with NEM system restoration, which needs to be in place well in advance of any blackout event.
  • How AEMO is adapting system restoration to changes in the power system and generation mix.

Presenter 1: Sorrell GroganPrincipal Engineer, Australian Energy Market Operator

Sorrell Grogan is a principal engineer at the Australian Energy Market Operator. His areas of work include EMT model and platform development, System Restart Ancillary Service and major event analysis, and complex operational scenario evaluations. He developed the first wide-area EMT model to evaluate the events that led to the 2016 South Australian Black System event, and was a key member of the investigation team. Prior to joining AEMO in 2014, Sorrell worked in the private, government and education sectors in power electronics design and information technology. Sorrell has Bachelor and Masters by Research degrees from Monash University in Electrical and Computer Systems Engineering.

Presenter 2: Dr. Nilesh Modi, Principal Engineer, Australian Energy Market Operator

Nilesh is a Principal Engineer at the Australian Energy Market Operator (AEMO). At AEMO, Nilesh has worked across various teams at AEMO including National Planning, electricity market operations and Systems Capability. Nilesh has worked on number of key projects/documents published by AEMO, namely the review of the South Australian (SA) system black event, system strength assessments for South Australia, the review of under-frequency load shedding design for SA, the system integrity protection scheme for SA, system strength requirements and the inertia requirement methodology. He has been involved in investigating system incidents that have resulted in large disruptions across the National Electricity Market (NEM). Nilesh is actively involved in the IEEE Power and Energy Society and CIGRE, and have published articles in the area of system strength, inertia, and challenges associated with integration of IBRs. Nilesh is a senior member of the IEEE and also an adjunct research fellow at the University of Queensland, Australia. Nilesh received his PhD from the University of Queensland, where he was awarded the Dean’s Excellence Award for RHD Excellence. He is a recipient of ESIG’s energy excellent award.

Presenter 3: Dr Jenny Riesz, Principal at the Australian Energy Market Operator

Dr Jenny Riesz is a Principal at AEMO, leading a work stream on the operational integration of distributed energy resources (DER). Prior to this she conducted post doctoral research at the University of New South Wales on market design for 100% renewable power systems, and was a Principal in Climate Policy and Renewable Energy at ROAM Consulting. Her PhD is in physics.

Presenter 4: Cheryl Noronha, Senior Engineer, AEMO

Cheryl is a Senior Engineer in AEMO’s Operational Analysis and Engineering team, where she investigates extreme power system events and is currently focussed on the NEM system restart process and improvements in this area. Prior to this, when Cheryl joined AEMO in 2012, she worked within the Generator connections team, assessing new and modified generators for their technical capabilities. Cheryl has a Bachelor of Computer Science and Engineering, and a Master of Electrical Engineering.

About the Association

AUPEC is the premier conference in power engineering in Australia, New Zealand and South East Asia. This conference provides a forum for both university and industry researchers and experts in power engineering to discuss and share ideas, present results, reflect on past experiences and discuss future projects.

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