Development of new control strategy for voltage sag mitigation

Ali O. Al-Mathnani, M. A. Hannan, Majid Al-Dabbagh, Mohd Alauddin Mohd Ali, Azah Mohamed

Research output: Contribution to conferencePaper

5 Citations (Scopus)

Abstract

Voltage sags are an important power quality problem for which the dynamic voltage restorer (DVR) is known as an effective device to mitigate them. This paper presents a new control algorithm for dynamic voltage restorer (DVR) that mitigates voltage sag by low active power injection with short time delay. This work is based on two-vector control technique using 12 pulse inverter. A smooth control technique using in-phase compensation method is presented. The proposed control method is tested on an 11 kV distribution system. In the control system, the DVR detects and tracks the phase angle of the supply voltage and produces a reference voltage signal from the rated load voltage magnitude. At any phase shift, the phase angle of the reference voltage is adjusted to track the phase angle of the supply voltage. The difference between the reference and measured voltage is injected to the line by the DVR. A phase locked loop is used to keep the load voltage synchronized continuously and track the source voltage. It is shown that the proposed method improves the performance of the DVR. The system stability depends on the dead-beat gains used in the control algorithm to provide very fast response. Photovoltaic (PV) source with a boost converter are included to support the DC source during voltage sag. © 2008 IEEE.
Original languageEnglish
Pages318-323
Number of pages285
DOIs
Publication statusPublished - 01 Dec 2008
Externally publishedYes
EventPECon 2008 - 2008 IEEE 2nd International Power and Energy Conference -
Duration: 01 Dec 2008 → …

Conference

ConferencePECon 2008 - 2008 IEEE 2nd International Power and Energy Conference
Period01/12/08 → …

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All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law

Cite this

Al-Mathnani, A. O., Hannan, M. A., Al-Dabbagh, M., Mohd Ali, M. A., & Mohamed, A. (2008). Development of new control strategy for voltage sag mitigation. 318-323. Paper presented at PECon 2008 - 2008 IEEE 2nd International Power and Energy Conference, . https://doi.org/10.1109/PECON.2008.4762491