Power Quality and Power Interruption Enhancement by Universal Power
Quality Conditioning System with Storage Device
Abstract: In this paper a
novel design of Universal Power Quality Conditioning System (UPQS) is proposed
which is composed of the DC/DC converter and the storage device connected to
the DC link of UPQS for balancing the voltage interruption. The proposed UPQS
can balance the reactive power, harmonic current, voltage sag and swell,
voltage unbalance, and the voltage interruption. The performance of proposed
system was analyzed through simulations with MATLAB\SIMULINK software. The
proposed system can improve the power quality at the common connection point of
the non-linear load and the sensitive load.
Keywords:
1.
Universal Power Quality
Conditioning System (UPQS)
2.
Voltage interruption
3.
DC/DC converters
4.
uper-capacitor
Software: MATLAB/SIMULINK
Block
Diagram:
Fig.
1: Configuration
of proposed UPQC with energy storage.
Expected Simulation
Results:
Fig. 4: Voltage sag
compensation. (a) Source voltage. (b) Load voltage.
Conclusion:
This
paper proposes a new configuration of UPQC that consists of the DC/DC converter
and the super capacitors for compensating the voltage interruption. The
proposed UPQC can compensate the reactive power, harmonic current, voltage sag
and swell, voltage unbalance, and the voltage interruption. The control
strategy for the proposed UPQC was derived based on the Synchronous reference
frame method. The operation of proposed system was verified through simulations
with MATLAB/SIMULINK software. The proposed UPQC has the ultimate capability of
improving the power quality at the installation point in the distribution
system. The proposed system can replace the UPS, which is effective for the
long duration of voltage interruption, because the long duration of voltage
interruption is very rare in the present power system.
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