Structural Optimization of a Power Transformer Tank

Delta Star, one of North America's leading manufacturers of power transformers, commissioned Lx Sim to optimize the design of its transformer tanks. The goal was to use numerical simulation to ensure increased seismic resistance and safe response in the event of an internal arc, while complying with the industry's strict standards.

Challenges

Reinforce the tank to withstand seismic events without compromising durability
Maintain controlled flexibility allowing the tank to deform and rupture safely—especially at the lid weld—in case of an internal arc
Meet rigorous industry standards for safety and performance

Solutions

FEA Simulation

Analysis of the tank’s structural reinforcements
Study of dynamic behavior in the event of an internal arc
Identification of critical zones and simulation of lid expansion under pressure

Design Optimization

Enhancement of structural reinforcements to improve seismic resistance
Design modifications to preserve the tank’s controlled flexibility
Integration of changes that meet specific industry standards without compromising the transformer’s core function

Results

Thanks to numerical simulation, an optimal solution was identified, enabling Delta Star to:

Strengthen the tank to resist seismic events
Ensure safe deformation in the event of an internal arc
Comply with industry safety and performance standards

This project demonstrates how simulation can play a key role in equipment design, balancing safety, performance, and regulatory compliance.