Harmonic Filtering Solutions in Industrial Electrical Systems

📢 Contact Harmonic Filtering Service Today!

At KTH ELECTRIC, we specialize in providing optimal harmonic filtering solutions for industrial electrical systems. Let our experienced technical team help you improve operational efficiency and reduce costs.
👉 Call now: 0968.27.1199 or Schedule a free consultation here!

KTH ELECTRIC harmonic filtering solution, including passive filters, active filters, and isolation transformers in industrial electrical systems.

What Are Harmonics, and Why Should They Be Filtered?

Harmonics are high-frequency components that exceed the fundamental frequency (50Hz or 60Hz), generated by nonlinear devices in electrical systems. Harmonics cause:

  • Distortion of current and voltage waveforms.
  • Increased energy losses.
  • Reduced equipment lifespan.

Filtering harmonics helps:

  • Stabilize electrical systems.
  • Reduce operational costs.
  • Extend equipment life.

Classification of Loads: Linear and Nonlinear

Diagram of industrial power distribution systems with high-voltage, medium-voltage, CSPK compensation, transformers, and motors
Detailed industrial power system diagram by KTH ELECTRIC, featuring high-voltage, medium-voltage, CSPK compensation, and motor connections with modern design.
Load Type Characteristics Examples
Linear Current waveform is sinusoidal and matches voltage waveform. Motors, incandescent lights, capacitors.
Nonlinear Current waveform is distorted, non-sinusoidal, causing harmonics. Inverters, UPS, computers, industrial equipment.

Effects of Harmonics on Electrical Systems

Type of Effect Details
Technical – Voltage distortion.
– Increased RMS current, leading to overheating and reduced equipment lifespan.
– Resonance with capacitors causing dangerous overvoltage.
Economic – Higher capital expenditure (CAPEX): Larger cables and transformers.
– Increased operational expenses (OPEX): Reduced efficiency, higher electricity bills.
– Production disruption: Significant losses in semiconductors, data centers, and telecommunications.

Financial loss examples:

  • Semiconductor industry: 109 billion VND per incident.
  • Data centers: 21 billion VND per hour.
  • Telecommunications: 863 million VND per minute.

Total Harmonic Distortion (THD): THDu and THDi

Index Explanation
THDu (Voltage THD) Measures voltage distortion in the system.
THDi (Current THD) Measures current distortion at devices.
**Acceptable Standard THD typically needs to be below 5% for good power quality.

Effective Harmonic Filtering Solutions

Method Mechanism Advantages Limitations
Series Reactor Increases impedance to reduce harmonics and absorb voltage transients. Low cost, easy installation. Limited effectiveness for high-order harmonics.
Isolation Transformer Isolates noise and reduces harmonics through delta-star configuration. Effective noise filtering, quality improvement. Higher investment cost compared to reactors.
Passive Filter Uses capacitors and reactors to filter harmonics within a specific frequency range. Simple design, low cost. Not flexible with frequency variations.
Active Filter Cancels harmonics by injecting opposite-phase currents. High efficiency, adaptable to system changes. High investment cost, requires precise measurement.

Benefits of Harmonic Mitigation

  • Reduced CAPEX: Saves on cable sizes and equipment ratings.
  • Lower OPEX: Decreases energy losses by up to 10%.
  • Extended equipment lifespan: Reduces overheating in transformers, cables, and motors.
  • Improved performance: Minimizes production downtime, enhancing system stability.

Real-World Applications

  • Industrial: Factories, arc furnaces, motor inverters.
  • Commercial: Data centers, office buildings.
  • Residential: Lighting systems, small UPS.

📢 Contact Us Today to Optimize Your Electrical System!

KTH ELECTRIC is committed to delivering cutting-edge harmonic filtering solutions to help you:

  • Reduce operational costs.
  • Enhance system durability and efficiency.

👉 Call now: 0968.27.1199 or Schedule a consultation here!