• Ancillary services – needs and requirements
  • Increased observability between distribution and transmission system levels
  • Business models for utilization of customer flexibility in the interaction DSO/TSO
  • Improved plans for defence and restoration

3. Tertiary 2018

Work performed

  • Documentation from the working groups at the workshop in June – input to the planning pilot project in CINELDI.
  • Evaluation of today's status for utilization of distributed energy resources' flexibility in power system operation and description of a future concept (Web-of-Cells).
  • Screening study of TSO-DSO cooperation in the European legislation. Structure: Market/Bidding/Physical layer.
  • Technical and practical approaches used in literature to define new DSO-TSO interaction schemes.
  • Start-up evaluating the mini scenarios from WP6 related to the focus in WP3.
  • Development of a more detailed plan with emphasis on Analysis of ICT needs for TSO-DSO use-cases, Data-models for TSO-DSO interaction based on IEC 61970-301 CIM, Communication and overall system real-time requirements and usage of Nodes as market platform for flexibility.

Significant results (highlights and their innovation potential)

  • ELECTRA summary report published.
  • Screening study of TSO-DSO cooperation in the European legislation, structured into the topics: Market layer, Bidding layer and Physical layer.
  • A memo describing the literature study focusing on the technical and practical approaches used in the literature to define new DSO-TSO interaction schemes.
  • First evaluation of WP6 mini scenarios relevant for WP3.
  • Workshop on TSO/DSO integration (Expert group).


  • Utilization of distributed energy resources' flexibility in power system operation – Evaluation of today's status and description of a future concept (Paper IEEE UPEC 2018)
  • ELECTRA IRP Final report
  • ELECTRA Web of Cells Summary document
  • Topics important for TSO-DSO cooperation in the European legislation: screening study (Memo)
  • Review of DSO-TSO interactions: The technical aspects (Memo)
  • "WP3/WP5 Oppsummering fra gruppearbeid – workshop 12. juni 2018" (Memo)

2. Tertiary 2018

Significant results (highlights and their innovation potential)

  • Workshop 12 June was arranged in cooperation with WP5, discussing e.g. flexibility pilot projects
  • Evaluation of 213 use cases, where 86 were evaluated as relevant for WP3


  • WP3/5 Workshop in June. The objective was to present research status and discuss relevant flexibility pilot projects for these WPs.
  • Task 3.1/3.2 Coordination meetings SINTEF Energi/SINTEF Digital
  • Task 3.1 Participation in first meeting in CIGRE Joint Working group JWG C6/C2.34 related to 'Flexibility provision'. A first meeting was arranged in Paris 29 August.


  • Blog about WP3/WP5 workshop
  • Memos: DSO/TSO Interaction overview and WP3 Interaction DSO/TSO – Use case (v1.1)
  • Poster presentation "Characterization of demand-side flexibility in power and energy markets", DTU CEE Summer School 2018:
    • Güray Kara, Asgeir Tomasgard, Hossein Farahmand, Modern Optimization in Energy, June 25, 2018


  • Current status of DSO-TSO interactions established related to acquisition of ancillary services
  • Relevant use cases for the interaction DSO/TSO are evaluated

PhD Status

  • PhDs Mohammad Ali Abooshahab and Güray Kara are on track
  • Postdoc Mario Blazquez de Paz transferred to WP3 (from WP6) from T2-2018

1. Tertiary 2018

Significant results (highlights and their innovation potential)

  • Survey performed among the DSOs, mapping the status of interaction DSO/TSO and the use of flexible resources in the grid operation today, and input related to what is expected in the future
  • 89 out of 213 use cases have been evaluated as relevant for WP3.
  • SmartNet description relevant for WP3.


  • Survey Interaction DSO/TSO


  • Results from workshop Sept 2017 (Memo)
  • SmartNet (Memo)
  • Survey DSO (Memo)
  • Project description (PhD Task 3.2)


  • DSO/TSO Workshop (9/1)
  • ELECTRA IRP "Web of Cells"-workshop (20-22/2)
  • PhD/PostDoc meeting (22/3)
  • WP3 Expert group skype meeting (17/4)

PhD Status (T3.2/T3.3)

  • Project description delivered
  • Taking relevant courses
  • Starting working on paper

Results 2017

Interaction DSO/TSO (WP3)
The objectives of WP3 are to develop concepts and solutions for utilizing flexible resources (DER) in different market products and ancillary services, for increased observability between the distribution and transmission systems and business models regarding utilization of customer flexibility (DER).

The expected impact from these objectives is improved interaction DSO-TSO to benefit the total power system, especially by enabling DER flexibility to all voltage levels.

2017 has been a year for start-up of the activities within WP3. The main activities are therefore related to a first workshop with the partners in CINELDI, a concept study of ancillary services and interaction DSO/TSO and recruitment of PhD students.

Workshop with partners – arranged in cooperation with WP4 and WP5 (2017-09-07)
A partner workshop was arranged in the beginning of September in cooperation with WP4 "Microgrids" and WP5 "Flexible resources in the distribution grid". The workshop was divided in two parts, where an introduction to each WP and input from selected partners were given in the first part, and group discussions related to the topics within the relevant WPs were performed in the second part of the workshop.

The results from the group discussions will give important information for the research to be done within WP3. Two groups were established discussing how flexible resources are in use today, how they can be used in near future (2020-2030) and after CINELDI (2030-2040), both for the market and in system services.

Task structure in WP3
Task structure in WP3

To a limited degree some flexible resources (mainly for large industry or electrical boilers) are in use in balancing services today – as tertiary reserve with response within 15 minutes, activated by a phone call from the TSO.

In the near future, there will be an increased focus on other flexible resources, but customer involvement is a challenge. The interaction DSO/TSO has to be defined, to make it possible to activate flexible resources without generating any problems for other stakeholders. This a topic that WP3 will study.

Concept study of ancillary services and interaction DSO/TSO
A concept study was started in 2017, evaluating today's ancillary services and interaction DSO/TSO. This work will be the basis for the evaluation of the ancillary services in the future intelligent and flexible power system (2030-2040). Topics to be evaluated are state of the art in Norway and other relevant countries (based on today's power system) for the interaction DSO/TSO. Present functionalities are in use to secure a stable operation of the power system, both on transmission and distribution level, and an evaluation of which problem(s) the different ancillary services should solve such as when are different services needed? When is there a problem to solve? And what should be the physical parameters to trigger the need for activating a service? (voltage, frequency and other). This study will be completed in 2018. Important experiences from the Horizon 2020 project "SmartNet" will be important input to this work, as this project also is included as in-kind to CINELDI.

A survey for mapping the status of today's interaction between DSOs and TSO in Norway has been developed. The focus in the survey will be on the use of flexible resources in today's power system and what kind of information the DSOs are selected related to interaction DSO/TSO. The survey will be sent out to the DSOs in CINELDI in the beginning of 2018.

PhDs recruited
Two PhDs were recruited to WP3 in 2017, focusing on the following topics:

Distributed and hierarchical dynamic state estimation for smart distribution grids
The PhD will study accurate monitoring of the power system, while handling (or avoiding) the 'data deluge'. At substation level, detailed dynamical models will be utilized, with full utilization of sensor data. Information transmitted to higher voltage levels of the power system will be filtered to focus on information and system services of relevance to those higher levels. Methodology will need to be developed for sensor selection and placement for observability at the lower level, and for filtering and data fusion under consideration of the particular dynamic phenomena to be observed at higher levels.

Techno-economic optimization for analysing consumer flexibility and related market structures
The main objective of the PhD project is to develop models, concepts and solutions for utilization of customer flexibility in the energy system. This includes realization of balancing services and flexibility services as an alternative to grid reinforcement, minimizing grid asset investments and maintenance costs. The project will study market structures for trading flexibility, the different players, business models and decision support for the analysis of markets, contracts, tariffs and cooperation

The PhD students started up with their coursework in 2017, that will be continued in 2018. Additional, the PhD students in cooperation with their supervisors will start on the academic work related to each PhD topic.


Hanne Sæle

Research Scientist
Hanne Sæle
Research Scientist
901 74 048
Energy Systems