Problem statement:

As a TSO, I want to know flexibility resources within my network and I need tools to assess current situation, future needs so to evaluate possible investment options related with flexibility provision.

Objective:

  • Review international trends and challenges in grid flexibility and assess flexibility issues in the South East European (SEE) region
  • Study the flexibility requirements and resources in Greece, Bulgaria and Cyprus
  • Leverage the feedback of major stakeholders in Europe through extensive survey and respective analysis of the responses, in order to address real needs
  • Develop an analytic methodology for flexibility assessment aligned with current TSO adequacy assessment, evaluating short-term needs of system balancing to long-term planning
  • Provide a pathway of strategic decision making through CBA approaches worldwide and specific Key Performance Areas and Indices (KPAs and KPIs)
  • Elaborate on future scenarios of joint operation in the SEE region with forecasting uncertainty modelling and more interconnection capacity

Achievement:

  • Develop an upgraded flexibility adequacy assessment methodology, with a stepwise approach from IEA FAST to hourly simulations, for calculating specific flexibility indices such as Insufficient Ramping Rate Expectation, Flexibility Residual.
  • Study in detail the net-load forecast errors and highlight the time periods of greater deviations and need for flexibility resources.
  • Implement the methodology in Greece, Cyprus and Bulgaria, in close cooperation with the national TSOs and analyse the future flexibility requirements of the respective power systems.
  • Analyse the CBA methodologies applied worldwide and how they evaluate the impact of new grid upgrade project for system operation.
  • Leverage important features of these methodologies and propose a new strategic decision-making approach for innovation technology integration into the transmission networks.
  • Propose five specific Key Performance Areas to be evaluated in the method and respective set of KPIs to quantify the impact of new technology into the network operation.
  • Link the strategic decision-making approach with the flexibility adequacy simulation platform in order to provide an upgraded toolbox for new technology promotion in planning studies.
  • Present and analyse five use cases of integrating new technologies solutions related with FLEXITRANSTORE demonstrations.
  • Highlight specific benefits of the solutions in the use cases, paving the way for further studies in WP13 of scalability and replicability evaluation.

WP2 in a nutshell

WP2 in a nutshell

 

Reference architecture - Flexibility assessment for innovation integratio

Reference architecture - Flexibility assessment for innovation integration

 

Expected output

Expected output

 

Interest of the Stakeholders for FLEXITRANSTORE pilot projects-1  Interest of the Stakeholders for FLEXITRANSTORE pilot projects-2

Interest of the Stakeholders for FLEXITRANSTORE pilot projects – results of a survey done in January 2018 on average value of relevance according to stakeholders on eight demos of FLEXITRANSTORE

 

The Flexibility Assessment Tool developed by FLEXITRANSTORE

The Flexibility Assessment Tool developed by FLEXITRANSTORE

 

Probability of losing a ramp for the years 2020-2025

Probability of losing a ramp for the years 2020-2025

 

Heatmap of the correlation matrix for forecast errors of different hours

Heatmap of the correlation matrix for forecast errors of different hours

 

An example of downward reserve capacities, showcasing emphasize on strong need for flexibility in early afternoon hours

An example of downward reserve capacities, showcasing emphasize on strong need for flexibility in early afternoon hours

Overarching KPIs for FLEXITRANTORE

  • KPA1 - Renewables integration
  • KPA2 - Congestion reduction
  • KPA3 - Flexibility indices improvement
  • KPA4 - Improving Reliability and Stability
  • KPA5 - Improved competitiveness of the electricity market

 

Relevance of KPIs with demo

Relevance of KPIs with demo

Specific KPIs for demo - example

  • Power flow controller
    • Extension of outage windows for construction & maintenance projects
    • Time required to implement solution
    • Value of scaling the solution size over time to meet emerging needs.
    • Value of the PFC assets being highly mobile and ability to be re-deployed to new locations to solve new issues as they emerge.
    • Flexibility in approach to capital spending (modular design and redeployability means that capital spending can be projected for much shorter time horizons)
  • Storage with conventional GT power plant:
    • Primary response – Increase of capacity and response time
    • Increase of power plant electricity production
    • EFR – Capacity of response
    • Black Start – Validation of the service with the storage
    • LVRT voltage support – quantity and BESS sizing
    • ROI (Return on Investment)