Home » Harmonics Disadvantages in Power System
Power Systems

Harmonics Disadvantages in Power System

Sources of Harmonics:

Several sources of harmonic currents that may be found on electrical power distribution networks are listed below:

  • Variable speed motor drives
  • Rectifiers
  • Arc furnaces
  • Wielding equipment
  • Uninterrupted power supplies
  • Switching mode power supplies
  • Compact fluorescent lamps
  • Electronic ballasts

Disadvantages of Harmonics:

Harmonics degrades the performance of power system. Some of the disadvantages of harmonics in the power distributed network are listed below:

  • The harmonics flowing in the distribution network downgrade the quality of the electrical power supply. There can have several negative effects on the operation of the power system
  • Increased losses on the distribution system due to increase in the effective rms current
  • Over-load in neutral conductors due to cumulative increase in the third harmonics created by the single phase loads
  • Overloads, vibration and premature ageing of the generators, transformers and motors as well as increase in the noise level
  • Overloads and premature ageing of the power factor correction capacitors
  • Distortion of the supply voltage that can disturb the operation of the sensitive loads
  • Disturbances in the communication networks and telephone lines
  • Resonance between the supply inductance and capacitance of the power factor correction capacitors

Similar Articles:

Related Articles

Ferroresonance in Power Transformers

S Bharadwaj Reddy

Corona Ring on Surge Arresters and other EHV equipment

S Bharadwaj Reddy

Silicon Carbide Lightning Arresters Working Principle

S Bharadwaj Reddy

Ungrounded or Isolated Neutral System Disadvantages

S Bharadwaj Reddy

Neutral Grounding Practice in Power System

S Bharadwaj Reddy

Shunt Capacitor Advantages in Power System

S Bharadwaj Reddy

Leave a Comment

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Accept Read More

WordPress Image Lightbox