Master Thesis Evaluation of Simulation Models for Flicker and Harmonics

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The opportunity:

Join Hitachi Energys Power Consulting team in Gothenburg for your Masters thesis focused on evaluating simulation models for flicker and harmonics in modern power grids. As renewable energy and industrial loads like arc furnaces increase power quality challenges such as flicker and harmonics become more critical.

Your work will compare simulation results from DIgSILENT PowerFactory (RMS and EMT) with Hitachi Energys internal PSCAD model which uses detailed control algorithms for STATCOM flicker compensation. While the internal model isnt publicly available simplified PowerFactory models offer a practical alternative.

Youll model an arc furnace and a STATCOM simulate their interaction and assess flicker and harmonic performance. The goal is to quantify how well commonly available tools replicate vendor-specific results and recommend best practices for grid studies.

How youll make an impact:

• Model power system components including electrical arc furnaces and STATCOMs using DIgSILENT PowerFactory in both RMS and EMT simulation modes.

• Conduct time-domain simulations to analyze flicker and harmonic behavior under various grid conditions and control strategies.

• Compare simulation results from PowerFactory models against Hitachi Energys internal PSCAD model to assess fidelity and performance.

• Evaluate control algorithm impact by quantifying differences in flicker damping between simplified and detailed STATCOM models.

• Develop recommendations for using publicly available simulation tools to assess flicker performance in compliance with grid codes.

• Document findings and methodologies with the potential to contribute to a technical paper summarizing the study and its implications.

• Living Hitachi Energys core values of safety and integrity means taking responsibility for your own actions while caring for your colleagues and the business.

Your background:

• Masters student in Electrical Engineering Power Systems or related field.

• Strong interest in power quality grid simulation and control systems.

• Familiarity with simulation tools (PowerFactory PSCAD) is a plus

• Analytical mindset and ability to interpret complex system behavior.

• You possess strong motivation problem-solving skills and the ability to complete tasks.

• Proficiency in English language both written and spoken.

More about us:

At Hitachi Energy we offer a dynamic and supportive environment for your master thesis journey. Youll be guided by an experienced Technical Advisor and Flicker Specialist and work closely with a dedicated team of power system analysts who are passionate about innovation and collaboration.

If youre ready for an exciting new challenge and this opportunity aligns with your interests and background we encourage you to apply soonapplications are reviewed on an ongoing basis. For any questions feel free to reach out to Recruiting Manager Cecilia Karlsson at

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