Frederik Geth

Date:            Friday, 18 June, 2021

Time:           1:00 pm – 2:00 pm

Forum:         Battery Storage and Grid Integration Program Webinar

Speaker(s):  Frederik Geth, Newcastle, CSIRO Energy Centre

Location:    Online and in-person at B1.33 Seminar Room, Hanna Neumann Building 145, Australian National University

Register:     via Eventbrite

The webinar will take place in-person at ANU and online, via live streaming. Both attendance options require registration. Please ensure you are registering for the correct attendance option (in-person or online) when booking your ticket

Watch the recording here.

Phase unbalance is a phenomenon in three-phase power networks that relates to voltages (or currents) magnitudes being unequal between phases, and the phase angles not being off-set by 120 degrees. Phase unbalance implies inefficient use of the network’s power transfer capabilities, as well as increased network losses.

In state estimation and optimal control problems in power systems, we naturally end up formulating mathematical optimisation problems, subject to network physics. In a power distribution context, this means we want to represent phase unbalance as part of the constraints.

In this context, Frederik Geth will talk about the physics of phase unbalance, and how it is translated to sets of mathematical equations that can be solved at scale by off-the-shelf nonlinear optimisation solvers.


  • 1.00 pm – Introduction by Lachlan Blackhall, Head, Battery Storage and Grid Integration Program, Australian National University
  • 1.05 pm – Presentation by Frederik Geth, Newcastle, CSIRO Energy Centre
  • 1.40 pm – Audience Q&A
  •  2:00 pm – Close

About the speaker

Frederik Geth is a research scientist working with the CSIRO in Newcastle Australia in the energy systems program. He obtained a BSc (’07), MSc (’09), and PhD (’14) from the university of Leuven in Belgium. His current research focus is applications of optimisation models in distribution network operations, including unbalanced state estimation and optimal control of battery storage systems. Frederik has been using the programming language Julia since 2015 and has contributed to a variety of open-source power system optimisation toolboxes written in Julia.

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PLEASE NOTE – All in-person attendees are required to check in at the venue using the ACT Government Check in CBR app.