The opportunity
Understanding the moisture dynamics in transformer insulation is critical for predicting aging, dielectric failure, and overall
reliability. While recent models like the Thermo-Chemical Digital Twin offer advanced simulation capabilities, one of the main
opportunities for improvement lies in the modeling non-uniform water distribution and its impact on voltage behavior under
transient conditions. Additionally, no established criterion exists for evaluating water content in paper insulation under
energized conditions.
Your Responsibilities
* Model Development: Extend the water diffusion model to include spatially resolved moisture dynamics and additional influencing factors such as temperature gradients and oil aging
* Diagnostic Criteria: Develop a practical criterion for evaluating water content in paper insulation under energized conditions
* Voltage Behavior Analysis: Investigate how increased and non-uniform moisture distribution affects voltage response under impulse and switching conditions
* Validation: Validate model improvements through simulations and comparison with Breakdown Voltage (BDV) tests using special wave shapes
Your background
* Master's student in Electrical Engineering, Power Systems, Applied Physics, or related fields
* Strong foundation in modeling and simulation (e.g., MATLAB, Python, COMSOL)
* Knowledge of dielectric materials and transformer insulation systems
* Analytical and independent working style
* Fluent in English; German is a plus
What We Offer
* Supervision by experienced R&D professionals
* Access to internal models, data, and simulation tools
* Opportunity to contribute to cutting-edge transformer diagnostics
* Potential for follow-up opportunities in research or engineering roles
* switching conditions
Hitachi Energy is a global technology leader in electrification, powering a sustainable energy future through innovative power grid technologies with digital at the core. Over three billion people depend on our technologies to power their daily lives.
With over a century in pioneering mission-critical technologies like high-voltage, transformers, automation, and power electronics, we are addressing the most urgent energy challenge of our time – balancing soaring electricity demand, while decarbonizing the power system.
Headquartered in Switzerland, we employ over 50,000 people in 60 countries and generate revenues of around $16 billion USD. We welcome you to apply today.