Independent Engineering Analysis You Can Rely On
At Reactance, we combine advanced simulation tools with deep transformer engineering expertise to support both validation of existing designs and execution of complex calculations for new projects — providing full engineering support based on your technical specifications.
Whether you need a second opinion, detailed analysis, or complete calculation packages — we ensure your design is technically sound before it reaches production.
What This Means for You
- Risk Identification: Identify hidden risks before they become costly failures.
- Design Validation: Validate supplier or internal design decisions with independent engineering judgment.
- Performance Optimization: Optimize losses, efficiency, and material usage.
- Faster Delivery: Reduce redesign cycles and project delays.
Our Core Analysis Capabilities
1. Electromagnetic & Magnetic Field Analysis
We perform high-precision 2D and 3D simulations to optimize magnetic performance and eliminate loss-related risks.
- Loss Prediction: Load and no-load loss calculation.
- Stray Loss & Eddy Currents: Analysis of induced losses in tank walls, clamps, and structural parts.
- Core Heating & Flux Distribution: Identification of thermal risks in the magnetic circuit.
- Reactance & Impedance: Short-circuit reactance and zero-sequence impedance calculations.
Impact: Reduced losses, improved efficiency, and elimination of overheating risks.
2. Dielectric & Insulation Design
We validate insulation systems under all operating and transient conditions to ensure long-term reliability.
- Impulse Voltage Distribution: Voltage stress inside windings (BIL).
- Insulation Strength: Safety margins for turn-to-turn and disk-to-disk insulation.
- Electrostatic Field Modeling: 2D and 3D field analysis to prevent partial discharge and breakdown.
Impact: Prevention of partial discharge, insulation failure, and costly breakdowns.
3. Thermal & Hydraulic Simulations
We ensure effective cooling and safe operation under load through integrated thermal and hydraulic modeling.
- Hot-Spot Prediction: Precise determination of hot-spot temperatures and positions.
- Cooling System Design: Verification of cooling loops (ONAN, ONAF, OFAF, ODAF).
- Oil Flow Modeling: Hydraulic analysis of oil flow and pressure drops within the cooling system.
Impact: Extended transformer lifetime and improved thermal reliability.
4. Mechanical & Electrodynamic Stability
We validate designs against extreme stress conditions such as short-circuit events.
- Axial & Radial Forces: Calculation of electrodynamic forces during short-circuit events.
- Winding Stability: Verification against deformation under peak fault currents.
- Safety Factors: Mechanical safety margin assessment for all structural elements.
Impact: Prevention of deformation and mechanical failure during operation.
5. Structural & Static Analysis
We verify structural integrity under operational, transport, and installation conditions.
- Tank Stress Analysis: Verification under lifting, jacking, vacuum, and pressure loads.
- Beams & Supports: Structural verification of clamping beams and frame elements.
- Transport Assessment: Analysis of acceleration loads during rail and road transport.
Impact: Reduced risk of damage during transport and installation.
6. Dynamic & Harmonic Behaviour
We ensure stability under dynamic loads and external influences.
- Seismic Analysis: Modal analysis and structural optimization for high-PGA environments.
- Vibration & Resonance: Identification and mitigation of resonance risks under operating frequencies.
- Transport Dynamics: Assessment of transport-induced dynamic behavior.
Impact: Reliable operation in harsh environments and high-risk regions.
7. Magnetic Field & Stray Flux Analysis
We analyze and control magnetic field distribution to avoid hidden thermal and loss risks.
- Hot-Spot Identification: Mapping of stray flux concentration in structural steel.
- Tank Shielding Optimization: Design and positioning of magnetic shunts.
- Stray Flux Management: Reduction of induced losses in tank walls and clamping structures.
Impact: Lower losses, reduced overheating, improved safety.
8. Electrostatic Simulation
We optimize high-voltage insulation in critical areas of the active part and bushings.
- Winding End Insulation: Field analysis at high-stress end regions.
- Internal Lead Clearances: Verification of dielectric distances for all connection systems.
- Bushing & Oil Barrier Design: Shielding and barrier optimization for EHV applications.
Impact: Increased dielectric reliability and reduced failure probability.
Why Clients Choose Reactance
- Independent Expertise: Unbiased and unaffiliated engineering judgment.
- OEM & Utility Experience: Track record across both manufacturing and grid operation environments.
- High-Voltage Capability: Proven experience on complex projects up to 420 kV.
- Flexible Engagement: From a single calculation to full project involvement.
We help you identify risks early, validate critical design decisions, and avoid costly mistakes — so your project moves forward with confidence and gets it right the first time.
