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Detuned Reactor

The growing use of power electronic devices is causing increase in level of harmonics in electrical systems.This is leading to frequent failure of capacitor installations.This is the reason why energy suppliers requires harmonic blocking reactors.

 

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Detuned Reactor

The growing use of power electronic devices is causing increase in level of harmonics in electrical systems.This is leading to frequent failure of capacitor installations.This is the reason why energy suppliers requires harmonic blocking reactors.

A detuned reactor with capacitor system works as a function of power factor correction and prevent harmonic current and voltage from further amplification due to resonance.By adding a reactor in series with the capacitor it forms a low pass resonant circuit which prevents a higher order harmonics to pass through

PARAMETERS AND SELECTION OF DETUNED REACTOR COUPLING OF CAPACITORS AND REACTORS

  • Voltage increase in capacitor due to harmonics will lead to premature failure of the capacitor . Hence it is warmly recommended to use the proposed coupling of capacitor and reactor.

Detuning frequency

  • Harmonic blocking reactance is based on the harmonic voltage and current spectrum .The harmonics blocking frequency purely depends on the lowest harmonics current
  • 140 Hz will be used if THD of current is substantially higher than 60%
  • 210 Hz will be used if THD of current is almost equal to 60%