Master's Thesis - Dynamic Line Rating based on phasor measurements HT25
Master's Thesis - Dynamic Line Rating based on phasor measurements HT25
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Job Description
Vattenfall Eldistribution AB is Swedens largest Distribution System Operator (DSO) managing around 9000 km of 130 kV overhead lines. We face challenges in increasing electric power transmission as power lines are currently rated based on static summer or winter conditions. Building new lines is expensive and often controversial.
For several years weve used Dynamic Line Rating (DLR) based on weather measurements to increase capacity on some lines. However this approach is difficult to scale for larger volumes. Therefore Vattenfall Eldistribution is exploring an innovative solution: DLR using phasor measurements. This technology uses synchronized voltage and current measurements at the ends of power lines to calculate realtime power loss and line temperature enabling dynamic ratings based on local weather conditions.
Scope
This Master Thesis aims to clarify the mathematical foundations of DLR based on phasor measurements. The first step is to describe some commercial products using this method and summarize international experiences in the field. The second step assesses the equations including conditions limitations and expected inaccuracies. Finally a thorough assessment of the measurement chain is conducted including a sensitivity analysis. How will measurement transformer inaccuracies or failing time synchronization affect the result How accurately can the power lines (temperature dependent) resistance be expressed What is the overall assessment of DLR based on phasor measurements
- Key question: How accurately can an overhead line medium temperature be calculated
- Limitations: 130 kV overhead lines only
Qualifications :
We are looking for a student or students who want to work toward fossilfree living and are soon graduating from their academic studies. You are also someone who identifies with our principles: Active Open Positive and Safetyfocused.
- Education: Enrolled in a masters program in Technical Mathematics Electric Power or Theoretical Physics
- Availability: Open to 1 or 2 masters students
- Language Request: Ability to present in Swedish at our Trollhttan office
Additional Information :
- Duration: Sep Dec 2025 (start date as agreed)
- Location: Gothenburg
- Application: A single file with CV and grades.
- Last date for application:
- Contact at Vattenfall: Tor Johansson 407
Diversity and Inclusion In Everything We Do
We are convinced that heterogeneous teams can outperform homogeneous ones. But we can only unlock the power of diversity when everyone feels included. Read more about our important work on diversity and inclusion at Work :
No
Employment Type :
Fulltime
Employment Type
Full-time
