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Carelabs

IEEE 1584 · Engineering

Harmonic Study & Analysis - Carelabz Poland

Carelabs delivers harmonic study and analysis for industrial and commercial facilities across Poland, measuring total harmonic distortion with a harmonics analyser and modelling system impedance versus frequency to identify resonance risk. Where levels exceed the limits set in PN-EN 50160, we recommend mitigation — harmonic filters, relocated power-factor correction capacitance, or higher-pulse-number rectifiers — and verify compliance with PN-HD 60364.

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What distortion adds to the bill

Harmonic current does no useful work. It flows, it heats conductors and transformers, and it is metered. The loss is real, continuous, and almost never quantified.

What We Deliver

Losses located by branch

Real and reactive flows are reported per branch alongside harmonic content, which identifies where loss accumulates rather than stating that the installation is generally inefficient.

WHY IT MATTERS

A continuous cost nobody itemises

Distortion losses appear in the electricity bill as ordinary consumption. Nothing separates them, nothing alarms, and the cost continues indefinitely because it has never been attributed to anything.

  • Measurement logged across a representative operating period, since distortion follows load and loss follows distortion.
  • Transformer loading and harmonic content assessed together, because the loss depends on both and reporting either alone understates it.
  • Neutral conductor loading checked on four-wire distribution, as triplen harmonics add rather than cancel and produce loss in a conductor carrying no useful power.
  • Power factor separated into displacement and distortion components, since capacitors correct one and not the other.
  • Estimated losses stated with their basis and uncertainty, rather than presented as a precise figure the measurement cannot support.
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DELIVERABLES

What you receive

Issued against PN-HD 60364 and the applicable distortion limits, with the loss calculation basis stated.

  1. 1Measured distortion with the full harmonic spectrum at the point of supply and at major feeders
  2. 2Loss estimate by branch with the harmonic component distinguished from fundamental loss
  3. 3Transformer loss assessment including the derating consequence
  4. 4Displacement and distortion power factor reported separately
  5. 5Mitigation options with the loss each removes and an indicative payback
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How the study runs

01

Establish the load and the tariff basis

Consumption and demand data are collected so any loss figure can be expressed in the terms the site is actually billed on.

02

Measure the distortion

Recording covers a representative operating period at the point of supply and at the feeders carrying the largest non-linear load.

03

Model the network

The network is built in ETAP so harmonic current flows can be traced through each branch rather than inferred from a single measurement.

04

Calculate the losses

Loss is calculated per branch with the harmonic component separated, including frequency-dependent conductor resistance.

05

Attribute to loads

The spectrum at each feeder identifies which equipment produces the distortion generating the loss, so mitigation can be targeted.

06

Report with payback

Each mitigation option is presented with the loss removed and its cost, so the decision is commercial rather than purely technical.

Frequently asked questions

It depends entirely on distortion level, loading and running hours, so a general figure would be misleading. What the study provides is your figure, calculated from measured distortion and your own consumption data. On continuously loaded installations with heavy drive populations it is frequently large enough to fund the mitigation.
It lowers the loss component, which is real but usually smaller than people expect relative to total consumption. The stronger commercial cases are normally recovered transformer capacity and avoided equipment failure. Presenting the loss saving alone tends to undersell the actual benefit.
It reduces the losses caused by reactive current at the fundamental frequency, which is a separate matter from harmonic loss. Capacitors do not reduce harmonic current and can increase it where they resonate with the supply transformer. The two problems need distinguishing before either is addressed.
It is an engineering estimate with stated assumptions rather than a metered value, because harmonic loss cannot be measured directly at a revenue meter. The report states the basis and the uncertainty, which is what allows it to be used in a business case honestly rather than quoted as a precise number.

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