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Power Quality

Diagnostics and Power Quality

Who it applies to
Plants with drives, induction furnaces, rectifiers or refrigeration
What we measure
Power factor, current and voltage THD, unbalance, transients
Instrumentation
Three-phase power quality analyzer, thermal imaging camera
Deliverable
Report with measured spectrum and costed corrective measures
Duration
2 to 4 weeks, with 7 days of continuous logging

Your bill already charges you for poor power quality. It just does not say so.

Power factor correction, harmonic filters, thermography and predictive testing for industrial facilities.

What it isWhere your money goes HarmonicsWhat we doQuestions

What it is

How fit your installation is for your loads to work as they should

Power quality is defined by five variables: amplitude, frequency, waveform, phase balance and continuity. And it splits into two things that are often confused.

Quality of service has to do with time: continuity of supply. That one is CFE's responsibility. Quality of power has to do with the signal: variations in waveform, frequency and amplitude. That one, to a large extent, is generated by your own process.

Point of connection.
Point of connection
Metering at switchboards.
Metering at switchboards
Switchgear and protection.
Switchgear and protection
Thermography of connections.
Thermography of connections

Where your money goes

You pay for part of it on your bill. The rest, in the spare-parts storeroom.

01

Low power factor

Below 0.90, CFE applies a direct charge on your bill. It is the easiest penalty to correct and the one that has been paid the longest without anyone reviewing it.

02

Harmonics

Transformers and conductors that heat up with no apparent load, capacitors that fail early, protective devices that trip for no visible reason and motors that lose service life. The bill does not itemize it; maintenance pays for it.

03

Unbalance and transients

Phase unbalance increases losses and heats motors. Transients damage control electronics cumulatively, until one day it does not start.

The mistake we see most often

A capacitor bank installed to correct power factor, on a network with harmonics and without a prior study, resonates with the fifth harmonic and destroys equipment — including the bank itself. Measuring the spectrum first costs a fraction of what that mistake costs.

Harmonics

This is what the current your process sends back to the grid looks like

Variable frequency drives, rectifiers, induction furnaces and switched-mode power supplies do not draw sinusoidal current: they chop it. The result is a distorted wave that heats everything it passes through.

Current waveformTwo cycles
+I0−I 0one cycletwo cycles High current THD
Ideal sine wave Measured current with harmonic distortion

Representation of a wave with fifth and seventh harmonic content, typical of loads with a six-pulse rectifier. Your plant's real spectrum is measured, not assumed: it determines whether the filter should be tuned passive or active.

What we do

We measure first, and tell you whether your problem was the one you thought

Almost anyone will sell you a capacitor bank. Very few measure the spectrum first, and even fewer know what to do when the bank goes into resonance. Harmonic filters are the scarcest technical capability in this market.

01

Metering and analysis

Three-phase analyzer at the points that matter, for long enough to capture the real production cycle.

02

Power factor correction

Sizing, supply and installation of a capacitor bank, with resonance verification.

03

Harmonic filters

Design and installation of tuned passive or active filters, based on the measured spectrum.

04

Thermography and predictive testing

Inspection of switchboards, connections and transformers, with a report on severity and intervention priority.

05

Permanent monitoring

Continuous-logging equipment, so it stops being a snapshot and becomes a movie.

Questions

What clients ask before hiring us

How do I know if I have a harmonics problem?
The typical signs: transformers running hot without being loaded, capacitors that open on their own, breakers that trip for no apparent reason, and motors that fail more than they should. None is conclusive on its own — that is why we measure.
Can I just correct the power factor?
Sometimes yes, and we will tell you so. But if your network has harmonics, installing capacitors without a filter can make the problem worse instead of solving it. The prior measurement is what decides, and it costs much less than the bank.
How long do you need to measure?
Seven continuous days at a minimum, to capture the full production cycle including the weekend and startups. An afternoon's measurement is not enough to size anything.
Does operation stop?
No. The analyzers are installed with current clamps on the existing conductors, and thermography is done with the equipment under load — in fact it has to be running for it to be useful.
When it is not for you

If your bill has no power factor charge and your maintenance team reports no recurring failures in switchboards or motors, you probably do not have a problem that justifies the study. In an initial review we tell you so with your bill on screen.

How we work

One accountable partner, from metering to operation

We measure

Seven-day campaign with a Class A analyzer.

We design

Engineering based on your real load curve.

We build

Supply and installation inside your fence line.

We operate

GTO Vigía sustains the result after construction.

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Energy solutions

Download here

Book an initial review of your plant

In a short meeting we review your bill with you, on screen, and tell you what is worth measuring.

We work with plants on medium and high voltage. By sending you accept our privacy notice.

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Related services

Strengths

What backs every project

GTO Energy offers electrical engineering tailored to your plant. Request your diagnostic and start by knowing where the opportunity is.

01

Diagnostic with no down payment

Fully creditable if you implement. No charge if we find no package that pays back in under 4 years.

02

Current regulation

Compliance reports based on RES/550/2021, filed with the CNE and CENACE.

03

Third-party systems

We service plants installed by others, starting with a condition survey.

Partners with trademark-use authorization

  • Jenbacher
  • Guascor Energy
  • Hering
  • Pylontech
  • Huawei

Group clients since 1983

  • alestra
  • AT&T
  • Banamex
  • BBVA
  • The Walt Disney Company
  • HSBC
  • Lockheed Martin
  • NASA
  • PwC
  • Santander
  • Siemens
  • Telefónica
  • Televisa
  • Telmex
  • Transportation Security Administration
  • Verizon
  • ICA
  • ASA
  • Nielsen
  • Bosque Real
  • Logistik

Also: Cuadritos, Productora Nacional de Papel and Telemar.