Master Thesis: enhancing Water Diffusion Modeling and Moisture Criteria for Energized Transformers

vor 1 Woche

Brilon, Deutschland HITACHI ENERGY GERMANY AG Vollzeit

**Description**

**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

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