INFLUENCE OF THE HARMONIC DISTORTION ON SHORTCIRCUIT TEST POWER FACTOR MEASUREMENT |
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| G. Crotti, G. Farina, L. Rege |
- Abstract:
- The thermal and mechanical stresses resulting from a short-circuit fault in an electric circuit strongly depend on the circuit power factor. For this reason, the IEC standard related to short-circuit test indicates, for each current range, the value of the power factor with a defined tolerance. A method for the measurement of the power factor based on the analysis of the digitally recorded short-circuit current is briefly described. The method is checked by applying it to the evaluation of the power factor measurement value and uncertainty in simulated test conditions. Attention is focused on the harmonic distortion of the supply voltage: the obtained results show that the method can be applied also in this case, but with a decrease of the measurement accuracy, which depends both on the amplitude of the distortion and the value of the power factor.
- Keywords:
- power factor, short-circuit
- Download:
- IMEKO-WC-2000-UNC-P501.pdf
- DOI:
- -
- Event details
- Event name:
- XVI IMEKO World Congress
- Title:
Measurement - Supports Science - Improves Technology - Protects Environment ... and Provides Employment - Now and in the Future
- Place:
- Vienna, AUSTRIA
- Time:
- 25 September 2000 - 28 September 2000