Title :
A new concept in evaluating power system distortions under unbalanced and nonsinusoidal conditions
Author :
Kenari, M. Tourandaz ; Mohamadian, S. ; Shoulaie, A.
Author_Institution :
Dept. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran, Iran
Abstract :
This paper presents a new index to evaluate a distorted signal under unbalanced and harmonic conditions. This criterion is called total harmonic and unbalanced distortion (THUD) which can be used to calculate the amount of harmonics and unbalance of voltage, current and power waveforms. Whereas conventional factors such as Vࢤ/V+ and THD are fairly incomplete to express the total distortion of a signal in both harmonic and unbalanced environments, the use of alternative factors in such cases seems to be mandatory. It is demonstrated that the proposed voltage total harmonic and unbalanced distortion (VTHUD) along with voltage total harmonic distortion (VTHD) and voltage total unbalanced distortion (VTUD) are appropriate factors to achieve to this purpose. Furthermore, THUD is an extensive factor to compare two distorted environments from aspect of power quality issues.
Keywords :
Automation; Harmonic distortion; Industrial power systems; Numerical analysis; Paper technology; Power quality; Power system harmonics; Power systems; Total harmonic distortion; Voltage; Distortion factors; harmonics; unbalance;
Conference_Titel :
Environment and Electrical Engineering (EEEIC), 2010 9th International Conference on
Conference_Location :
Prague, Czech Republic
Print_ISBN :
978-1-4244-5370-2
Electronic_ISBN :
978-1-4244-5371-9
DOI :
10.1109/EEEIC.2010.5489964