Voltage flicker is considered as one of the most
severe power quality problems. Due based on voltage source
converters, FACTS devices are used for voltage flicker
compensation. The design and application of STATCOM
technology based on voltage-source converters for voltage
flicker mitigation is discussed in this paper. This paper
covers the contrasting approaches; dealing with the voltage
flicker mitigation in three stages and assessing the related
results in details. Initially, the voltage flicker mitigation,
using FCTCR (Fixed Capacitor Thyristor Controlled
Reactor), was simulated. Secondly, the compensation for the
Static Synchronous Compensator (STATCOM) has been
performed. In this case, injection of harmonics into the
systemcaused some problems which were later overcome by
using 12-pulse assignment of SATCOM and RLC filters. The
obtained results show that STATCOM is very efficient and
effective for the flicke compensation. All the simulations have
been performed on the MATLAB Software.
M. Roja Bharathi : M.Tech Student, Lenora College of Engineering- Rampachodavaram
V. Narendra Kumar : Asst. Professor, Lenora College of Engineering- Rampachodavaram
Power Quality
Voltage Flicker
Static
Synchronous Compensator (STATCOM)
The design and application of STATCOM technology
based on voltage-source converters for voltage flicker
mitigation is discussed in this paper. Mitigation is done in
three stages and the results are compared and contrasted.
First, FCTCR is used to compensate for the voltage
flicker, then a 6- pulse voltage-source converter
STATCOM and finally a 12- pulse STATCOM based on
voltage-source converter equipped with an RLC filter are
designed for complete voltage flicker compensation
without harmonics. All the simulated results which have
been performed in MATLAB show that a 6-pulse
STATCOM is efficiently effective in decreasing the
voltage flicker of the generating loads. However, there is
injection of the harmonic from STATCOM into the
system which can be improved with the increase of the
voltage source converters of STATCOM using a 12-pulse
STATCOM equipped with an RLC filter.
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