Job Description

Location:

Bad Honnef, North Rhine-Westphalia, Germany

Job ID:

R0104799

Date Posted:

2025-09-17

Company Name:

HITACHI ENERGY GERMANY AG

Profession (Job Category):

Other

Job Schedule:

Full time

Remote:

No

Job Description:

The opportunity

U nderstanding 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

S upervision 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

Qualified individuals with a disability may request a reasonable accommodation if you are unable or limited in your ability to use or access the Hitachi Energy career site as a result of your disability. You may request reasonable accommodations by completing a

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on our website. Please include your contact information and specific details about your required accommodation to support you during the job application process.

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