TY - GEN
T1 - Evaluation of assessment methods used to analyse measured power quality performance within the south African context
AU - Venter, Erika
AU - Pretorius, Jan Harm C.
AU - Koch, Robert G.
PY - 2010
Y1 - 2010
N2 - Various assessment methods are used for analysing power quality data when reporting electrical transmission system performance. There is international debate as to which of these assessment methods is the best. A statistical analysis of measured voltage harmonic and unbalance data for the Eskom transmission network was undertaken to investigate the implication of using the various assessment methods - including the max imum to-min value, the 95% and 99% weekly methods, and the 95% and 99% daily methods. The 95% weekly assessment method is currently being used within Eskom (as well as standards such as EN 50t60 ) . The values obtained from the various assessment methods were compared against the corresponding max imum to-minute values and against each other. The results show significantly higher to-minute max imum values than the corresponding 95% or 99% values for a given week.
AB - Various assessment methods are used for analysing power quality data when reporting electrical transmission system performance. There is international debate as to which of these assessment methods is the best. A statistical analysis of measured voltage harmonic and unbalance data for the Eskom transmission network was undertaken to investigate the implication of using the various assessment methods - including the max imum to-min value, the 95% and 99% weekly methods, and the 95% and 99% daily methods. The 95% weekly assessment method is currently being used within Eskom (as well as standards such as EN 50t60 ) . The values obtained from the various assessment methods were compared against the corresponding max imum to-minute values and against each other. The results show significantly higher to-minute max imum values than the corresponding 95% or 99% values for a given week.
KW - Assessment and reporting
KW - Harmonics
KW - Power quality
KW - Standards power quality measurement
KW - Unbalance
UR - http://www.scopus.com/inward/record.url?scp=78650555063&partnerID=8YFLogxK
U2 - 10.1109/ICHQP.2010.5625320
DO - 10.1109/ICHQP.2010.5625320
M3 - Conference contribution
AN - SCOPUS:78650555063
SN - 9781424472444
T3 - ICHQP 2010 - 14th International Conference on Harmonics and Quality of Power
BT - ICHQP 2010 - 14th International Conference on Harmonics and Quality of Power
T2 - 14th International Conference on Harmonics and Quality of Power, ICHQP 2010
Y2 - 26 September 2010 through 29 September 2010
ER -