Dr Elizabeth Ratnam
Areas of expertise
- Renewable Power And Energy Systems Engineering (Excl. Solar Cells) 090608
Research interests
Power systems and control theory with a focus on smart grid design, uPMUs, solar PV, battery storage, EVs and the grid integration of renewables.
Biography
Dr Ratnam leads a research group in Power Systems & Optimization that focuses on both the theoretical and practical aspects of controlling renewable and distributed energy sources within power grids. Her overarching research thrust is to accelerate the energy transition and create a carbon-neutral power grid.
Dr Ratnam earned the BEng (Hons I) degree in Electrical Engineering in 2006, and the PhD degree in Electrical Engineering in 2016, from the University of Newcastle, Australia. She subsequently held postdoctoral research positions with the Center for Energy Research at the University of California San Diego, and at the University of California Berkeley in the California Institute for Energy and Environment (CIEE). During 2001–2012 she held various positions at Ausgrid, a utility that operates one of the largest electricity distribution networks in Australia. Dr Ratnam currently holds a Future Engineering Research Leader (FERL) Fellowship at ANU and is a Senior Lecturer in the ANU School of Engineering. She is a Senior Member of IEEE and a Fellow of Engineers Australia.
Publications
- Swartz, J, Wais , B, Ratnam, E et al. 2021, 'Visual Tool for Assessing Stability of der Configurations on Three-Phase Radial Networks', 2021 IEEE Madrid PowerTech, IEEE, USA.
- Kravis, R, Petersen, I & Ratnam, E 2021, 'Voltage Stability Studies for Distribution Networks: Assessing Load Dynamics', IEEE PES Innovative Smart Grid Technologies - Asia (ISGT Asia), IEEE, USA.
- Nimalsiri, N, Ratnam, E, Smith, D et al. 2021, 'Coordinated Charge and Discharge Scheduling of Electric Vehicles for Load Curve Shaping', IEEE Transactions on Intelligent Transportation Systems, vol. 23, no. 7.
- Nimalsiri, N, Ratnam, E, Mediwaththe, C et al. 2021, 'Coordinated charging and discharging control of electric vehicles to manage supply voltages in distribution networks: Assessing the customer benefit', Applied Energy, vol. 291.
- Módolo, M, Bento , M, Moraco, A et al. 2021, 'Robustness Evaluation of a WAMPAC Scheme Considering Problems with Communication Links', 2021 IEEE PES Innovative Smart Grid Technologies - Asia, ISGT Asia 2021, IEEE, United States.
- Salehi, Z, Chen, Y, Ratnam, E et al. 2021, 'Social Shaping of Linear Quadratic Multi-Agent Systems', Australian & New Zealand Control Conference (ANZCC), IEEE, Australia, pp. 232-237.
- Chen, Y, Islam, S, Ratnam, E et al. 2021, 'Social Shaping of Competitive Equilibriums for Resilient Multi-Agent Systems', 60th IEEE Conference on Decision and Control (CDC), ed. Magnus Egerstedt, IEEE, USA, pp. 2621-2626.
- Nimalsiri, N, Smith, D, Ratnam, E et al. 2020, 'A decentralized electric vehicle charge scheduling scheme for tracking power profiles', 2020 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference, ISGT 2020 , IEEE, New York.
- Nimalsiri, N, Mediwaththe, C, Ratnam, E et al. 2020, 'A Survey of Algorithms for Distributed Charging Control of Electric Vehicles in Smart Grid', IEEE Transactions on Intelligent Transportation Systems, vol. 21, no. 11, pp. 4497-4515.
- Swartz, J, Roberts, T, von Meier, A et al. 2020, 'Local Phasor-Based Control of der Inverters for Voltage Regulation on Distribution Feeders', 2020 IEEE Green Technologies Conference(GreenTech), ed. Pierre F. Tiako, Robert Scolli, Tom Jobe, IEEE, United States, pp. 121-126.
- Ratnam, E, Baldwin, K, Mancarella, P et al. 2020, 'Electricity system resilience in a world of increased climate change and cybersecurity risk', Electricity Journal, vol. 33, no. 9, pp. 1-6.
- von Meier, A, Ratnam, E, Brady, K et al. 2020, 'Phasor-based control for scalable integration of variable energy resources', Energies, vol. 13, no. 1, pp. 1-14.
- De Carvalho, W, Ratnam, E, Blackhall, L et al. 2020, 'Over-voltage Disconnection of DER Inverters: Assessing Customer Savings', 21st IFAC World Congress, ed. Rolf Findeisen, Sandra Hirche, Klaus Janschek, Martin Monnigmann, Elsevier B.V., Netherlands, pp. 13230-13235.
- Shaw, M, Sturmberg, B, Blackhall, L et al. 2019, 'The Impact of Residential Batteries on PV Self-Consumption and PV Exports: Early results from the Nextgen Trial in the ACT, Australia', 9th International Conference on Power and Energy Systems, ICPES 2019, IEEE, United States, pp. 1-6.
- Ratnam, E & Weller, S 2018, 'Receding horizon optimization-based approaches to managing supply voltages and power flows in a distribution grid with battery storage co-located with solar PV', Applied Energy, vol. 210, pp. 1017-1026.
- Ratnam, E, Weller, S, Kellett, C et al. 2017, 'Residential load and rooftop PV generation: an Australian distribution network dataset', International Journal of Sustainable Energy, vol. 36, no. 8, pp. 787-806.
- Ratnam, E, Weller, S & Kellett, C 2016, 'Central versus localized optimization-based approaches to power management in distribution networks with residential battery storage', International Journal of Electrical Power and Energy Systems, vol. 80, pp. 396-406.
Projects and Grants
Grants information is drawn from ARIES. To add or update Projects or Grants information please contact your College Research Office.
- LE230100058: National Facility for Electricity Grid Security and Resilience Research (Primary Investigator)
- Ext Led: Democratisation of Deep Learning: Neural Architecture Search at Low Cost (Secondary Investigator)