• Grid flexibility categorisation and modelling
  • Methods for sizing and placement of flexible resources
  • Customers' involvement in flexibility
  • Value of flexibility

2. Tertial 2018

Significant results (highlights and their innovation potential)

  • High time-resolution investigation of impacts of future loads performed on a test network from a residential area in Steinkjer.
  • Chronicle about potential for household flexibility sent to Dagens Næringsliv.
  • Manuscript "Energy storage scheduling in distribution systems considering wind and photovoltaic generation uncertainties" finalized and submitted to International Journal of Electrical Power & Energy Systems for peer review
  • Peer reviewed journal article focusing on the flexible customer and social relations in the future digital electricity system has been accepted for publication in Norsk Sosiologisk Tidsskrift, in special issue on digitalization of society based on pre study
  • New journal article: Orchestrating households as collectives of participation in the distributed energy transition: New empirical and conceptual insights. Energy Research & Social Science, Vol46, Pp. 252-261. Collaboration w/ Era-net projects MATCH, IHSMAG and FME CenSES.
  • First version of the report "Review of Local Flexibility Market Designs"

Meetings

  • ModFlex project status meeting (15 May)
  • WP3/5 Workshop in June. The objective was to present research status and discuss relevant flexibility pilot projects for the WPs.
  • WP3/WP5 Coordination meeting

Deliverables

  • High time-resolution Investigation of Impacts of Future Loads on Distribution Network, SINTEF Memo AN 18.12.30 (ModFlex)
  • Flexibility models for selected home appliances, SINTEF Memo AN 18.12.31 (ModFlex)
  • Analysing the rebound effect after forced disconnection of a water heater, SINTEF Memo (ModFlex)
  • "Energy storage scheduling in distribution systems considering wind and photovoltaic generation uncertainties" submitted to International Journal of Electrical Power & Energy Systems for peer review
  • Peer reviewed journal article focusing on the flexible customer and social relations in the future digital electricity system has been accepted for publication in Norsk Sosiologisk Tidsskrift, in special issue on digitalization of society based on pre study
  • Batteries become a part of the electrical distribution grid, Chronicle in Gemini
  • New journal article: Orchestrating households as collectives of participation in the distributed energy transition: New empirical and conceptual insights. Energy Research & Social Science, Vol46, Pp. 252-261. Collaboration w/ Era-net projects MATCH, IHSMAG and FME CenSES.

Milestones

  • 1 PhD candidate employed

PhD Status

  • Kasper Emil Thorvaldsen will start 1 september

Master theses

  • Fleksibelt forbruk som en ressurs i fremtidens kraftsystem, Thea Øverlie
  • Optimal Sizing and Scheduling of Distributed Battery Storage Possibilities in RES Dominated Power System, Martin Lillebo
  • Integrasjon av sol i det norske kraftsystemet, Signe Gjørven
  • Stochastic optimization of Zero Emission Neighbourhoods in smart cities, utilizing flexible demand, PV and electric vehicles, Ingrid M. Andersen
  • A Market-Based Mechanism on Distributed Flexibility Trading, Fredrik Blom
  • Cost-benefit allocation of flexibility options in distribution systems, Elise Tveita
  • Integrasjon av distribuert fornybar energi i Trøndelag, Oda Andrea Hjelme, Jarand Hole

1. Tertiary 2018

Significant results (highlights and their innovation potential)

  • Successful testing of new and computationally fast Optimal Power Flow with inter-temporal links. This model can be used for accurate power flow simulations with storage, EVs and flexible demand. High innovation potential. (In-kind PhD)
  • Succesful first implementation of new energy storage strategy for simultaneous price arbitrage and capacity provision. The method is based on a classical method for hydro power scheduling used in operational models today. High innovation potential. (MSc with SINTEF-collaboration)

Milestones

  •  1 PhD candidate employed – Achieved. Candidate will start August 2018
  • Established consumption measurement data platform for research purposes. Not started.

Deliverables

  • Aggregated Response Time and Granularity as Key Enablers for EVs Providing Fast Frequency Control – Manuscript sent to IEEE as planned
  • Review of Local Flexibility Market Designs – Report expected in July
  • Paper on energy storage scheduling methods – In progress
  • Documentation of flexible resources - In progress, expected shortly after the summer.¨

Meetings

  • Meeting with NVE Energiavd 7/3
  • Skype-meeting in ModFlex 8/5
  • IEA Task 25 meeting in April (with VTT, DTU, Fraunhofer, Imerial College, NREL, DoE..)
  • Planning of WP5 partner meeting June 12.

PhD Status

  • Task 5.3 PhD: Progress as planned
  • Task 5.4 PhD: Contract signed. Start in August.


Master thesis

  • 10 MSc students are connected to WP5, and they are all supervised by WP5 researchers. All are progressing as planned.

 

Results 2017

Flexible resources in the power system (WP5)
The overlaying objective of WP5 is to develop methods and models for cost effective integration of flexible resources in smart distribution grids.

The expected impact of the research is to contribute to improved efficiency of the system operation when utilizing flexibility as an important asset in the power system.

To pursue this goal, the work package is organised into four main Tasks:

  • Grid flexibility categorisation and modelling
  • Methods for sizing and placement of flexible resources
  • Customers' involvement in flexibility
  • Value of flexibility.

The major activities in the start of the year was to plan the research activities in detail, to recruit PhD candidates and to coordinate with the other CINELDI work packages as well as the relevant work within FME ZEN and FME CenSes. Moreover, the main achievements in 2017 are briefly described below.

Partner workshops on flexibility
At the 7th of September, we arranged a partner workshop together with WP3 and WP4, with focus on establishing good contact between the researchers and user partners, as well as discussing which technologies and solutions are most relevant to study in a 2030-2040 perspective. On the follow-up event during the CINELDI days 31st of October to 1st of November, we established the foundation for 3 pilots on flexibility, together with the user partners:

  • Pilot 1: "Flexibility used in system operation"
  • Pilot 2: "Flexibility as alternative to distribution grid reinforcements"
  • Pilot 3: "Green and flexible end-users".

These pilots will be important assets for testing out the usefulness and relevance of new simulation models, planning methods business models etc. that will be developed as part of the research.

Energy Modelling workshop and 5th Pyomofest
Together with our international research partner Sandia National Labs, we arranged this workshop 3rd -5th of October in Trondheim, with around 50-60 national and international participants from academia, research and private sector. The main objective for the workshop was to gather scholars, researchers and analysts working with mathematical modelling and optimization of energy systems such as energy storage optimization and EV integration, with a special focus on the open-source programming languages Python and Pyomo.

Master theses on flexibility
Well-planned master theses can be key to establish a successful link between research and education. Regarding the FME's, the master theses serves more important purposes, as the user partners also can be actively involved in the process. We decided to "kick-start" the research by establishing 14 master theses at Dept. of Electric Power Engineering (NTNU) that are connected to the WP5 research for the years 2017 and 2018.

Other research highlights from 2017

  • Successful power-hardware-in-the-loop tests of EV power grid interface in the SmartGrid lab (DTU-SINTEF-NTNU collaboration).
  • Development of dynamic AC-power flow model with storage and EVs (Matlab model).
  • Abstract accepted for special issue of "Sosiologisk Tidsskrift". Working title: det fleksible mennesket 2.0.
  • Developed optimization models for prosumers (with PV, EV and storage) based on stochastic and deterministic dynamic programming (Matlab-models).
  • Assessments of grid tariff structures for prosumers (MSc theses at NTNU).
  • Assessments of how energy storage can exercise market power in small power systems (MSC thesis at NTNU).
  • Three scientific papers were presented at international conferences:
    • "Stochastic Optimization of PV Battery System Operation Strategy under different Utility Tariff Structures". Int. Workshop on Integration of Solar Power into Power Systems 2017.
    • "Guidelines for DSOs on Reactive Power Provision by Electric Vehicles in Low Voltage Grids". CIRED 2017.
    • "Integration of PEV and PV in Norway Using Multi-Period ACOPF — Case Study". IEEE PowerTech 2017.
Electric vehicles can provide flexibility for the grid and the end-user
Electric vehicles can provide flexibility for the grid and the end-user (From the MSc thesis by S. Bjarghov, 2017, Dept. of Electric Power Engineering, NTNU)

Contact

Magnus Korpås

Professor
Name
Magnus Korpås
Title
Professor
Organization
Institutt for elkraftteknikk, NTNU