This website uses cookies to improve your browsing experience and the continued use of the webpage indicates your consent to ÅF’s use of these cookies. Find out more about how ÅF uses cookies and how you can manage them here: Read more

Available job

Evaluating the use of grid connected electric vehicles to stabilize the power grid

About the company

ÅF Pöyry is an international leader within engineering, design and advisory services. We create solutions to support our customers worldwide to act on sustainability as well as the global trends of urbanisation and digitalisation. We are more than 16,000 devoted experts within the fields of infrastructure, industry and energy operating across the world to create sustainable solutions for the next generation.

Making Future.

About the job

Background

The amount of electric vehicles connected to the power grid at any one time increases rapidly. This increases the strain on the network but can at the same time be of benefit to the power grid.

Renewable energy sources, such as wind and solar power, are becoming a larger portion of the generation mix and this transition reduces the stability of the network. Most notably the frequency stability. Thus, Svenska Kraftnät and other network owners are investigating new ways to increase the stability of the their network to combat this issue.

A new frequency regulation to be called Fast Frequency Reserve (FFR) which is fast acting, within 0s to 30s of the frequency deviating from the nominal value, is to be introduced in 2020. The possibilities of using grid connected electrical vehicles to supply power for the Fast Frequency Reserve service is of interest in this thesis.

Objective

To investigate the possibilities and limitations of using the batteries in grid connected electric vehicles to deliver power to the grid during large frequency stability events.

Research questions

  • How much power can an electric vehicle output to the power grid in a time frame of 0s to 30s during different conditions, such as battery temperature, state of charge and battery age?
    • What is the response time of different electric vehicles depending on if they are charging or are idle?
  • How much power can an electric vehicle output to the power grid in a time frame of 0s to 30s during different conditions, such as battery temperature, state of charge and battery age?
    • What is the response time of different electric vehicles depending on if they are charging or are idle?
  • Which effect can the output power have on the short term frequency stability of the power grid and how many vehicles are required to have a significant effect on frequency stability?
    • How many vehicles does an actor require to reliably be able to promise a certain power output or power reduction at all times to the grid owner?
  • What are the risks and cost for the owner of the vehicle to contribute to the Fast Frequency Reserve?

Methods

Study the theoretical background to electric vehicles and vehicle-to-grid functionality as well as power grid operations and frequency stability. This work is followed by measurements on several electric vehicles and simulations on frequency stability of a small power grid.

Deliverables

A report including:

  • Answers to the research questions
  • Discussion on future improvements to increase the efficiency of an electric vehicle used as Fast Frequency Reserve and to increase the appeal of such a functionality
  • Reflection on using electrical vehicle’s for Fast Frequency Reserve compared to other means of delivering Fast Frequency Reserve

Who are you?

You are currently pursuing a master thesis to finish your studies in Electrical Engineering, or other master programmes if the needed competences for the thesis are met.

We offer

We are looking for someone who wants to be part of ÅF’s success story. Are you passionate about technology development? Do you like to work together to find the best solution? Then we can offer you career opportunities in a modern workplace with challenging assignments and exciting projects all over the world.

The ÅF Group is ranked as one of Sweden’s most popular employer among engineers. At ÅF you will be involved in developing innovative and sustainable solutions within infrastructure, energy and industry. We are always looking for the sharpest skills that can create a future society together with us. We hope you will learn as much from us as we will learn from you.

Contact information

Marie Andersson  
+46 72 174 67 68
marie.j.andersson@afconsult.com

Isak Hellgren
+46 72 468 82 59
isak.hellgren@afconsult.com

Apply here