ABSTRACT:
In this paper, a study on the operation of a static synchronous
compensator for distribution systems, DSTATCOM, in relation to its performance
in the presence of events that can affect system´s power quality, is presented.
Performance under short-circuit and load variation is assessed. The IEEE 13
node test feeder, which is a highly loaded unbalanced system, is used in the
study. The D-STATCOM consists mainly of a three-level inverter with IGBTs and
PWM control. Modeling and simulations are implemented in Matlab/Simulink.
KEYWORDS:
1.
D-STATCOM
2.
Power Quality
3.
Unbalanced Distribution
Systems.
SOFTWARE: MATLAB/SIMULINK
BLOCK DIAGRAM:
EXPECTED SIMULATION RESULTS:
CONCLUSION:
This work presented simulation
results for a D-STATCOM operating in a typical unbalanced distribution test
system. Simulations were conducted in order to assess the DSTATCOM performance
under balanced and unbalanced disturbances. A commercially available D STATCOM
topology was chosen. In addition, a standard control system was used, in order
to illustrate that, in general, good solutions for power quality related
problems can be obtained without resorting to more complex and specific
problem-oriented control systems. The DC voltage, although not shown, was in
all cases, stable with low ripple. Controller parameters did not have to be modified
for different situations in order to perform satisfactorily. Finally, it can be
concluded that the D-STATCOM used in this study can contribute significantly to
the improvement of power quality in unbalanced distribution systems.
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