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Çözümler / Güç Kalitesi İzleme
〰️ Power Quality

Detect Power Quality Issues Instantly

Monitor harmonic distortion (THD), phase imbalance and voltage fluctuations with 15-minute granularity. Detect transformer losses, compensation resonance and equipment failures before they occur.

Güç kalitesi izleme ve THD harmonik analizi — Argus EMS
Why Does Power Quality Matter?

Harmonic Distortion and THD Effects

High harmonic distortion (THD) causes additional heat loss (eddy current) in transformers, resonance in compensation panels, and premature wear in motor windings. IEEE 519-2022 requires voltage THD to remain below 5%.

Variable frequency drives (VFDs), UPS systems, and LED lighting controllers are the primary harmonic sources. EPDK regulations apply an 8% upper limit at the connection point; violations incur penalties.

Argus Power Quality Module

What Is Monitored?

  • Harmonic distortion (THD-V and THD-I) — 15-minute granularity
  • 3rd through 15th harmonic component analysis
  • Phase imbalance (L1/L2/L3 current symmetry)
  • Power factor (cos φ) instantaneous and cumulative
  • Voltage fluctuation and sag detection
  • Neutral current monitoring — early grounding fault detection
  • IEEE 519 / EPDK threshold alarms (email + dashboard)
%8
EPDK THD upper limit
%5
IEEE 519 recommended limit
15 dk
THD update frequency
<1 dk
Alarm detection time
Problem Scenarios

What Problems Does Poor Power Quality Cause?

Harmonic distortion and phase imbalance develop insidiously — they silently inflate the bill and then erupt as equipment failures.

🔥

Transformer Overheating

Harmonic currents increase eddy current losses in transformers; they run hotter at the same load. Per IEEE C57.91, every 6-8°C increase halves transformer life. THD monitoring makes harmonics filter decisions objective.

⚡

Compensation Resonance

Capacitor banks can resonate with grid inductance at certain frequencies. This overloads the compensation panel and can cause serious failures up to capacitor bursting. THD analysis identifies the resonance frequency.

⚖️

Phase Imbalance

Asymmetry between L1/L2/L3 currents raises neutral current and causes overheating in single-phase loaded windings. Imbalance exceeding 10% means both losses and premature wear. Target load balancing corrections with Argus data.

📉

Motor and Equipment Failure

Harmonics cause vibration and early bearing wear in motors, charging inefficiency in UPS systems, and erroneous measurements in PLCs. Power quality tracking puts maintenance priorities on a data-driven basis.

FAQ

Frequently Asked Questions

What should the THD value be?
Per the IEEE 519-2022 standard, voltage THD in industrial systems should remain below 5%. EPDK regulations apply an 8% upper limit at the connection point; exceeding it incurs penalties and causes problems for neighbouring subscribers.
Does harmonic distortion affect the reactive penalty?
Not directly. However, high THD reduces the effectiveness of the compensation panel; capacitors may enter resonance, reactive power management becomes harder, and the reactive penalty risk increases indirectly.
How are power quality problems detected?
Argus EMS reads instantaneous THD, phase imbalance and power factor values from the transformer and energy analyzer at 15-minute granularity. When the IEEE 519 / EPDK threshold is exceeded, an automatic alarm email is sent.
Should I choose a harmonic filter or an active power factor corrector?
For fixed-frequency problems a passive filter is economical. For variable loads and a wide harmonic spectrum, an active harmonic filter (AHF) is preferred. Argus EMS reports the THD profile, providing objective data for the right choice.

See Argus at Your Facility

Explore the system with your own data in a demo session.