Modeling and Simulation of a
Distribution
STATCOM (D-STATCOM) for Power Quality
Problems Voltage Sag and Swell Based on
Sinusoidal Pulse Width Modulation (SPWM)
ABSTRACT:
This
paper presents the systematic procedure of the modeling and simulation of a
Distribution STATCOM (DSTATCOM) for power quality problems, voltage sag and
swell based on Sinusoidal Pulse Width Modulation (SPWM) technique. Power
quality is an occurrence manifested as a nonstandard voltage, current or
frequency that results in a failure of end use equipments. The major problems
dealt here is the voltage sag and swell. To solve this problem, custom power
devices are used. One of those devices is the Distribution STATCOM (D STATCOM),
which is the most efficient and effective modern custom power device used in
power distribution networks. D-STATCOM injects a current in to the system to
correct the voltage sag and swell. The control of the Voltage Source Converter
(VSC) is done with the help of SPWM. The proposed D-STATCOM is modeled and simulated
using MATLAB/SIMULINK software.
KEYWORDS:
1. Distribution
STATCOM (D-STATCOM)
2. MATLAB/SIMULINK
3. Power
quality problems
4. Sinusoidal
Pulse Width Modulation (SPWM)
5. Voltage
sag and swell
6. Voltage
Source Converter (VSC)
SOFTWARE: MATLAB/SIMULINK
BLOCK
DIAGRAM:
Fig. 1. Schematic representation
of the D-STATCOM for a typical custom power application
Fig. 2. Control scheme and test
system implemented in MATLAB/SIMULINK to carry out the D-ST ATCOM simulations
CONCLUSION:
This
paper has presented the power quality problems such as voltage sags and swell.
Compensation techniques of custom power electronic device D-ST ATCOM was
presented. The design and applications of D-STATCOM for voltage sags, swells
and comprehensive results were presented. The Voltage Source Convert (VSC) was
implemented with the help of Sinusoidal Pulse Width Modulation (SPWM). The
control scheme was tested under a wide range of operating conditions, and it
was observed to be very robust in every case. For modeling and simulation of a
D-ST ATCOM by using the highly developed graphic facilities available in MATLAB/SIMULINK
were used. The simulations carried out here showed that the D-STA TCOM provides
relatively better voltage regulation capabilities.
REFERENCES:
[I] O.Anaya-Lara, E. Acha, "Modeling and
analysis of custom power systems by PSCAD/EMTDC," IEEE Trans. Power
Delivery, vol. 17, no . I, pp. 266-272, January 2002.
[2]
S. Ravi Kumar, S. Sivanagaraju, "Simualgion of D-Statcom and DVR in power
system," ARPN jornal of engineering and applied science, vol. 2, no. 3,
pp. 7-13, June 2007.
[3]
H. Hingorani, "Introducing custom power", IEEE Spectrum, vol. 32, no.
6, pp. 41-48, June 1995.
[4]
N. Hingorani, "FACTS-Flexible ac transmission systems," in Proc. IEE 5th
Int Conf AC DC Transmission, London, U.K., 1991, Conf Pub. 345, pp. 1-7.
[5]
Mahesh Singh, Vaibhav Tiwari, "Modeling analysis and soltion to power
quality problems," unpublished.
