TY - JOUR

T1 - Power quality indicators estimation using robust Newton-type algorithm

AU - Terzija, V.

AU - Stanojevic, V.

PY - 2004/7

Y1 - 2004/7

N2 - A two-stage robust Newton-type numerical algorithm for power quality assessment in electric power systems is described. The robust Newton-type algorithm is applied to estimate current and voltage spectra and the fundamental frequency simultaneously, in the first algorithm stage. The algorithm robustness is achieved by developing an extra module called a 'bad data detector'. In the second algorithm stage power quality indicators are calculated, particularly the active, reactive, apparent and distortion powers. The main advantage is that the technique provides estimates which are insensitive to frequency deviations and to bad data appearing as a consequence of communication error, incomplete measurement, errors in mathematical models etc. The algorithm performance is tested under laboratory conditions using the distorted voltage and current signals digitised during an AC motor start. A simulation example of processing distorted currents and voltages of an arc furnace is also presented.

AB - A two-stage robust Newton-type numerical algorithm for power quality assessment in electric power systems is described. The robust Newton-type algorithm is applied to estimate current and voltage spectra and the fundamental frequency simultaneously, in the first algorithm stage. The algorithm robustness is achieved by developing an extra module called a 'bad data detector'. In the second algorithm stage power quality indicators are calculated, particularly the active, reactive, apparent and distortion powers. The main advantage is that the technique provides estimates which are insensitive to frequency deviations and to bad data appearing as a consequence of communication error, incomplete measurement, errors in mathematical models etc. The algorithm performance is tested under laboratory conditions using the distorted voltage and current signals digitised during an AC motor start. A simulation example of processing distorted currents and voltages of an arc furnace is also presented.

UR - http://www.scopus.com/inward/record.url?scp=4544378015&partnerID=8YFLogxK

U2 - 10.1049/ip-gtd:20040580

DO - 10.1049/ip-gtd:20040580

M3 - Article

AN - SCOPUS:4544378015

VL - 151

SP - 477

EP - 485

JO - IEE Proceedings: Generation, Transmission and Distribution

JF - IEE Proceedings: Generation, Transmission and Distribution

SN - 1350-2360

IS - 4

ER -