Affiliation:
1. Frederick University, Cyprus
Abstract
A proposed voltage sag index based on power flow equations is developed and investigated in this paper. The index supervises the power quality of a system, through calculating the voltage sag profile caused by an increase in reactive demand due to induction motor starting. Mathematical equations representing the load angle of the system are also derived. The accuracy of the index is investigated for a range of load, transmission, and distribution line X/R ratio values as well as various motor loading levels. Results demonstrate the effectiveness and applicability of the proposed index.
Subject
General Medicine,General Chemistry
Reference24 articles.
1. Proposed chapter 9 for predicting voltage sags (dips) in revision to IEEE Std 493, the Gold Book
2. Bergeron, R. (1998). Canadian electrical association approved quality indices. Paper presented at the IEEE Power Summer Meeting.
3. The influence of motor reacceleration on voltage sags
4. Bollen, M. H. J. (2000). IEEE P1564: Voltage sag indices-Draft 2. Washington, DC: IEEE Computer Society.
5. Voltage sags in three-phase systems