TY - JOUR

T1 - A numerical algorithm for direct real-time estimation of voltage phasor, frequency and its rate of change

AU - Terzija, Vladimir

AU - Djuric, Milenko

N1 - Funding Information:
The financial support received from Deutscher Akademischer Austauchdienst (DAAD) is gratefully acknowledged.

PY - 1996/5/1

Y1 - 1996/5/1

N2 - A new algorithm for direct estimation of voltage phasor, frequency and its rate of change, of a voltage signal distorted by a DC component and contaminated by random noise is presented. The method is based on the non-recursive Least Error Squares Technique (LS Technique). Using digitized samples of voltage at the relay location, the estimation of the voltage signal unknown parameters is improved by means of an update procedure. The algorithm is adapted to the actually estimated frequency iteratively, which improved the measurement accuracy, increased the measurement range and reduced sensitivity to the noise. To demonstrate the performance of the algorithm developed, computer simulated data record tests are presented. The proposed method seems to be particularly useful in the field of frequency relaying.

AB - A new algorithm for direct estimation of voltage phasor, frequency and its rate of change, of a voltage signal distorted by a DC component and contaminated by random noise is presented. The method is based on the non-recursive Least Error Squares Technique (LS Technique). Using digitized samples of voltage at the relay location, the estimation of the voltage signal unknown parameters is improved by means of an update procedure. The algorithm is adapted to the actually estimated frequency iteratively, which improved the measurement accuracy, increased the measurement range and reduced sensitivity to the noise. To demonstrate the performance of the algorithm developed, computer simulated data record tests are presented. The proposed method seems to be particularly useful in the field of frequency relaying.

UR - http://www.scopus.com/inward/record.url?scp=0008515370&partnerID=8YFLogxK

U2 - 10.1080/07313569608955683

DO - 10.1080/07313569608955683

M3 - Article

AN - SCOPUS:0008515370

VL - 24

SP - 417

EP - 428

JO - Electric Machines and Power Systems

JF - Electric Machines and Power Systems

SN - 0731-356X

IS - 4

ER -