Harmonic protection method for capacitor banks

Harmonic protection method for capacitor banks

  • CN 102,005,732 A
  • Filed: 12/10/2010
  • Published: 04/06/2011
  • Est. Priority Date: 12/10/2010
  • Status: Active Application
First Claim
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1. the harmonic protection method of a capacitor group, it is characterized in that:

  • the capacitor group harmonic protection device of employing comprises;

    CPU element, the current-voltage sampling unit that is used for the capacitor group is carried out electric current, voltage sample that links to each other with CPU element is by the protective device that is used to cut off the capacitor group of CPU element control;

    CPU element is obtained fundamental current effective value I on the capacitor group by the current-voltage sampling unit 1With each harmonic effective value I n, wherein;

    n is a harmonic number, the scope of n is 2~


    Then, according to the electric current real effective I on the following formula calculable capacitor group;

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