Advanced Modelling of DER-Rich Active Distribution Networks

Day 1

Prof Steven Low: The OPF Problem and Convex Relaxations

• Block 1: Power flow models and solutions

• Block 2: OPF and semidefinite relaxations

• Block 3: Analytical properties

• Block 4: Other convex relaxations

Day 2

Prof Steven Low: OPF for Distribution Networks

• Block 1: Branch flow models for radial networks

• Block 2: OPF and semidefinite relaxations

• Block 3: Multi-phase unbalanced radial networks

• Block 4: Example and application

Day 3

Prof Nando Ochoa: Orchestration of DER and Active Distribution Networks

• Block 1: The role and challenges of OPF in distribution

  Slides: Click here

  Further Reading and Other Materials

  • Hardware-in-the-loop demonstration of advanced control schemes for active distribution networks, IEEE/PES ISGT Latin America 2019
  • Using OPF for Smart Grids: From Concept to Reality, YouTube 2018
  • State-of-the-art techniques and challenges ahead for DG planning and optimization, IEEE Trans. on Power Systems 2013

  More on DER and Network Modelling

  • On the role of integrated MV-LV network modelling in DER studies, CIRED Workshop 2020
  • Statistical representation of EV charging: Data analysis and applications, PSCC 2018
  • Probabilistic impact assessment of low carbon technologies in LV distribution systems, IEEE Trans. on Power Systems 2016
  • Increasing the PV hosting capacity of LV networks: OLTC-fitted transformers vs. reinforcements, IEEE/PES ISGT 2015
  • On the integrated PV hosting capacity of MV and LV distribution networks, IEEE/PES ISGT Latin America 2015
  • Assessing the benefits of PV var absorption on the hosting capacity of LV feeders, IEEE/PES ISGT Europe 2013
• Block 2: OPF and DER-rich distribution networks

  Slides: Click here

  AIMMS Instructions

  • Step 1. Install AIMMS.
    • Affiliated with a University. Install the free academic license of AIMMS. You will need to register (https://licensing.cloud.aimms.com/license/academic.htm).
    • Non-affiliated with a University. Install the free academic license of AIMMS. You will need to register (https://licensing.cloud.aimms.com/license/community.htm).
    • Wait for their confirmation emails and follow their installation instructions (using the license they give you).
  • Step 2. Launch AIMMS and accept the terms and conditions.
  • Step 3. Download the AIMMS code and copy all the files (including the subfolder) to your PC or laptop.
  • Step 4. Using AIMMS, open the file "ACOPF.aimms".
  • Step 5. Play with the code!
    • Click on the tab 'Pages' (bottom left) and then double-click on 'Results' (top right, part of the 'Page Tree').
    • The pre-loaded network parameters and structure correspond to a small MV (balanced) network with three buses 1-2-3.
    • The pre-loaded objective function is to maximise the sum of the active power outputs of the set of Generators.
    • The AC OPF is an NLP problem that works well with CONOPT - which is available with the free license version of AIMMS. So, pick that one (go to \Settings\Solver Configuration).

  Further Reading on Balanced OPF

  • Assessing the potential of network reconfiguration to improve distributed generation hosting capacity in active distribution systems, IEEE Trans. on Power Systems 2015
  • State-of-the-art techniques and challenges ahead for DG planning and optimization, IEEE Trans. on Power Systems 2013
  • Minimizing energy losses: Optimal accommodation and smart operation of renewable distributed generation, IEEE Trans. on Power Systems 2011
  • Distribution network capacity assessment: Variable DG and active networks, IEEE Trans. on Power Systems 2010
  • Demonstrating the capacity benefits of dynamic ratings in smarter distribution networks, IEEE/PES ISGT 2010

  More on DER Hosting Capacity (without OPF)

  • Multi-year planning of LV networks with EVs accounting for customers, emissions and techno-economics aspects: A practical and scalable approach, IET Generation Transmission & Distribution 2021
  • Probabilistic impact assessment of low carbon technologies in LV distribution systems, IEEE Trans. on Power Systems 2016
  • Increasing the PV hosting capacity of LV networks: OLTC-fitted transformers vs. reinforcements, IEEE/PES ISGT 2015
  • On the integrated PV hosting capacity of MV and LV distribution networks, IEEE/PES ISGT Latin America 2015
  • Assessing the benefits of PV var absorption on the hosting capacity of LV feeders, IEEE/PES ISGT Europe 2013
• Block 3: Three-phase OPF: Lessons learned from large-scale realistic implementations

  Slides: Click here

  Further Reading and Other Materials

  • Ensuring Distribution Network Integrity Using Dynamic Operating Limits for Prosumers, IEEE Trans. on Smart Grids, 2021 (In Press)
  • On the Implementation of OPF-Based Setpoints for Active Distribution Networks, IEEE Trans. on Smart Grids, 2021
  • On the fairness of PV curtailment schemes in residential distribution networks, IEEE Trans. on Smart Grid, 2020
  • OPF-based CVR operation in PV-rich MV-LV distribution networks, IEEE Trans. on Power Systems, 2019
  • Advanced control of OLTC-enabled LV networks with PV systems and electric vehicles, IET Generation, Transmission & Distribution 2019
  • Implementable Three-Phase OPF Formulations for MV-LV Distribution Networks: MILP and MIQCP, IEEE/PES ISGT Latin America 2019
  • AC OPF for smart distribution networks: An efficient and robust quadratic approach, IEEE Trans. on Smart Grids, 2018
  • Control of EV charging points for thermal and voltage management of LV networks, IEEE Trans. on Power Systems 2016
• Block 4: DER and network integrity: Meter-level operating envelopes

  Slides: Click here

  Further Reading and Other Materials

  • Grid and Market Services from the Edge, IEEE Power & Energy Magazine, 2021
  • Ensuring Distribution Network Integrity Using Dynamic Operating Limits for Prosumers, IEEE Trans. on Smart Grids, 2021 (In Press)
  • On the Implementation of OPF-Based Setpoints for Active Distribution Networks, IEEE Trans. on Smart Grids, 2021
  • Managing residential prosumers using operating envelopes: An Australian case study, CIRED Workshop 2020
  • Operating envelopes for prosumers in LV networks: A weighted proportional fairness approach, IEEE/PES ISGT Europe 2020
  • On the fairness of PV curtailment schemes in residential distribution networks, IEEE Trans. on Smart Grid, 2020
  • Impacts of price-led operation of residential storage on distribution networks: An Australian case study, IEEE PES PowerTech 2019
  • OPF-based CVR operation in PV-rich MV-LV distribution networks, IEEE Trans. on Power Systems, 2019
  • Implementable Three-Phase OPF Formulations for MV-LV Distribution Networks: MILP and MIQCP, IEEE/PES ISGT Latin America 2019
  • AC OPF for smart distribution networks: An efficient and robust quadratic approach, IEEE Trans. on Smart Grids, 2018

  More about Project EDGE and ARENA Initiatives

  • Fact Sheet
  • UoM Project EDGE Website
  • ARENA’s Project EDGE Website
  • AEMO’s Project EDGE Website
  • ARENA’s Dynamic Operating Envelopes Workstream

Day 4

Dr Maria Vrakopoulou: Decision-Making Under Uncertainty due to Renewables

• Block 1: Renewable energy integration challenges

• Block 2: Stochastic OPF with approximate solutions

• Block 3: Stochastic OPF with AC-feasible solutions

• Block 4: Co-optimization of energy and reserves

Day 5

Prof Pierluigi Mancarella: DER Flexibility and Techno-Economic Modelling

• Block 1: Modelling flexibility from DER aggregation

• Block 2: Flexibility from distributed multi-energy systems

• Block 3: Smart districts and community energy systems

• Block 4: Distributed energy marketplaces and grid services