Where does it originate?
We locate loads and nodes where distortion appears or is amplified.
POWER QUALITY / HARMONICS
Harmonics & THD
Understand distortion before deciding how to mitigate it.
We measure voltage and current, identify dominant harmonic orders and relate distortion to loads, operating states and electrical architecture. The goal is to find the cause and design verifiable mitigation.
ENGINEERING PRINCIPLE
An isolated THD percentage does not explain the system. Engineering begins when we understand what generates it, when it appears and how it propagates.
DIAGNOSTIC QUESTIONS
Four questions before the filter.
The solution starts by understanding the phenomenon within the complete system, not by selecting filter capacity by intuition.
When does it appear?
We correlate THD with production, starts, drives, UPS and load changes.
How does it propagate?
We review the architecture to understand which buses, transformers and feeders share the phenomenon.
What risk does it create?
We relate electrical behavior to heating, trips, resonance, losses or instability.
MEASUREMENT LAYER
We do not measure a single number.
We build an electrical picture correlated with operating state. Applicable criteria and limits are reviewed according to the installation, equipment and relevant technical framework.
WHERE TO LOOK
Distortion has context.
Diagnosis considers electronic loads, distribution architecture and resonance conditions as parts of the same system.
Variable frequency drives
Power-electronic loads whose behavior changes with speed, torque and operating regime.
UPS and rectifiers
Conversion equipment that should be evaluated as part of the load system rather than in isolation.
Switched-mode power supplies
Large concentrations of electronics can modify an installation’s current profile.
Architecture and resonance
Transformers, capacitor banks and system impedances are part of the diagnosis.
MITIGATION ARCHITECTURE
Mitigation means designing a response to real behavior.
Study results define whether filtering, compensation, load reorganization, architecture changes or combined strategies are appropriate.
Active harmonic filter
Suitable when distortion and load vary and dynamic compensation is required. Selection should start from measurements and operating scenarios.
Passive harmonic filter
It can be an alternative in sufficiently characterized and stable conditions, with design coordinated with the network.
Redesign / segregation
In some cases the best mitigation is architectural: load segregation, transformation, distribution or operating adjustments.
Monitoring and verification
Mitigation should be compared against a baseline and verified under different load states.
POWER QUALITY
Back to Power Quality →Harmonics are one part of the complete electrical behavior.
NEXT STEP
Move from “we have harmonics” to knowing exactly what to do.
We can define measurement points, recording window, operating conditions and evaluation criteria before selecting any mitigation technology.
Request harmonics assessment