Design of Unified Power Quality Conditioner for Power Quality Improvement in Distribution Network

Year 2018, Volume: 6 Issue: 1, 47 - 52, 15.02.2018

Samet Biricik

https://doi.org/10.17694/bajece.402009

Cited By: 1

Abstract

Unified Power Quality
Conditioner (UPQC) is one of the most advanced Custom-Power-Devices in use
today to improve the quality of Power (PQ) in the distribution network. UPQC
compensates both voltage and current related PQ disturbances. Its control in
unbalanced and distorted weak grid condition is of research interest. Also the
performance of UPQC in the presence of unbalanced and non-linear harmonic loads
is critical to maintain desirable PQ. In this work, a Self-Tuning Filter (STF)
is implemented on the controller part to improve the performance of UPQC in the
weak grid voltage along with current unbalance and distortion. The studied
control structure gives an adequate voltage and current compensation for
voltage sag with distorted voltage conditions, and also for unbalanced current
conditions. A three-phase system is modelled in MATLAB/Simulink. The results of
simulation study are presented to verify the effectiveness of the proposed
control technique.

Keywords

UPQC, Voltage Sag, Unbalanced Voltages, Voltage Harmonics, Current Harmonics, STF

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