Title :
Pitfalls of electric power quality indices
Author :
Heydt, G.T. ; Jewell, W.T.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
fDate :
4/1/1998 12:00:00 AM
Abstract :
Several indices are in common use for the quantification of electric power quality. These indices are convenient for condensing complex time and frequency domain waveform phenomena into a number. However, a variety of commonly encountered circumstances are not readily accommodated (e.g. quasiperiodic and aperiodic signal components and noninteger multiples of the power frequency). Also, the power acceptability curves have been used as convenient measures of power quality and these curves do not capture three-phase detail of power quality problems. In this paper, the general subject of pitfalls of power quality indices is discussed and suggestions for alleviating these problems are made
Keywords :
electrical faults; harmonic distortion; power factor; power supply quality; power system harmonics; THD; aperiodic signal components; complex frequency domain waveforms; complex time domain waveforms; electric power quality indices; noninteger power frequency multiples; power acceptability curves; quasiperiodic signal components; total harmonic distortion; Circuits; Computer aided manufacturing; Frequency; Interference; Power quality; Power system harmonics; Reactive power; Stress; Telephony; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on
