Harmonic Study

Why Harmonics study required in a plant or industries?

The distortion of a current or voltage sine wave is generally defined by the harmonics of that wave. 50 Hz is the fundamental frequency, and this means that harmonics are the odd multiples of 5. The 5th harmonic is 250 Hz, the 7th is 350 Hz, and the 9th is 450 Hz.

Harmonics currents, which are produced by the non-linear load, flow into the power system. These harmonics negatively affect power quality and reliability and can pose safety problems. THD (Total Harmonic Distortion) must be identified and corrective measures taken to protect the power system.

Source of harmonics

  • Arcing devices or conduction furnaces/ Arc welding
  • Transformers under no load and light loads
  • Semiconductor based power supply system
  • Saturated Reactirs
  • Thyristor controlled reactors & motor drives
  • HP Sodium Vapors Lamp
  • Phase controllers
  • CFL/fluorescent tube lights
  • A.C. regulators
  • UPS, Rectifier, Static VAR
  • Electronics Ballast, Fan regulators

Impact & Effect Of Harmonics On Power System

Voltage distortion is extremely harmful because it can add extra voltage to the system and reduce the system's ability to deliver power. It can also cause rapid fluctuations in the voltage level of a system. For a capacitor, impedance decreases drastically because it is inversely proportional to the frequency.

Distortion of current wave shape is always a problem. It occurs when electronics or non-linear loads are connected to the network.

  • Increase in sizing of equipments and utility costs
  • Downtime and loss of productivity
  • Downtime and nuisance trips of drives, breakers and other equipment
  • Neutral conductor & cable over heating
  • Effect on motors & transformer's eddy current losses, K Factor sizing
  • Direct impact on power Factor Increases in energy Billing cost
  • Malfunctioning of over current relay

This are the major reason behind the harmonic study. Your plant's equipment, instrument's health totally depends on a power quality. Kindly reach us for the Harmonic study in your plant and make your plant healthier.

We Provide different power system analysis services which are listed below:

  • Relay coordination (All Are clickable button)
  • Short circuit study
  • Arc flash study   
  • Motor starting analysis
  • Harmonics study
  • Load flow study
  • Power factor analysis

We manage free training on operation, power system study with simulation software for your engineering staff to aware such incident due to improper selection, settings of relay, malfunctioning of circuit breakers in your plant.

Kindly contacts us for the best services & best offers.

Email : engineers@ipowerswitchgear.com / ipowerswitchgear@gmail.com

Contact : +91 97377 77537

We have completed relay coordination& system studies in many process, chemical, steel casting, cement plants and have expert engineers who knows the engineering phisics as we as different industries standard regulations.