ABSTRACT
A new control scheme to improve and maintain the power
quality of an electrical power system by design of distributed power flow
controller. Generally, In case of modern power utilities have problems like
challenges in growth of electricity in case of non-linear loads in grid connected
systems. In this paper, we introduced a new FACTS method i.e. distributed power
flow controller which is similar to other series-shunt controller types. This
DPFC method is also used like UPFC to mitigate voltage sag and swell as a power
quality issue. In DPFC, we eliminate the common dc link capacitor and instead
of single three phase series converter it has three individual single phase
converters. In this paper the control circuit is designed by using series referral
voltages, branch currents. The evaluated values are obtained by using
MATLAB/SIMULINK.
KEYWORDS
1.
DPFC
2.
Voltage Sag and Swell
3.
Power Quality
SOFTWARE:
MATLAB/SIMULINK
BLOCK DIAGRAM:
Fig
1: Basic Configuration of DPFC
EXPECTED SIMULATION RESULTS
Fig
2: Simulation results for voltage sag condition
Fig
3: Simulation results for mitigation of Voltage sag with DPFC system
Fig
4: Simulation results for current swell condition
Fig
5: Simulation results for mitigation of current swell with DPFC system
Fig
6: simulation results for active and reactive powers
CONCLUSION
In
this paper we implemented a new concept for controlling power quality problems
by Distributed Power Flow Controller device. The proposed concept of the DPFC approach
is mathematically formulated and analyzed for voltage dips and their
mitigations for a three phase source with linear load. The experimental results
of DPFC shows the effectiveness of DPFC in power quality enhancement as compared
to all other FACTS devices.
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[2]
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[3]
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[4]
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[5]
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