ABSTRACT:
In this paper, the design and performance of a three
phase solar PV (photovoltaic) integrated UPQC (PV-UPQC) are presented. The
proposed system combines both the benefits of distributed generation and active
power filtering. The shunt compensator of the PV-UPQC compensates for the load
current harmonics and reactive power. The shunt compensator is also extracting
maximum power from solar PV array by operating it at its maximum power point
(MPP). The series compensator compensates for the grid side power quality
problems such as grid voltage sags/swells by injecting appropriate voltage in
phase with the grid voltage. The dynamic performance of the proposed system is
simulated in Matlab-Simulink under a nonlinear load consisting of a bridge
rectifier with voltage-fed load.
1.
Power Quality
2.
DSTATCOM
3.
DVR
4.
UPQC
5.
Solar PV
6.
MPPT
CONCLUSION:
The
dynamic performance of three-phase PV-UPQC has been analyzed under conditions
of variable irradiation and grid voltage sags/swells. It is observed that
PV-UPQC mitigates the harmonics caused by nonlinear and maintains the THD of
grid voltage, load voltage and grid current under limits of IEEE-519 standard.
The system is found to be stable under variation of irradiation from 1000𝑊/𝑚2
to 600𝑊/𝑚2.
It can be seen that PV-UPQC is a good solution for modern distribution system
by integrating distributed generation with power quality improvement.
[1]
Y. Yang, P. Enjeti, F. Blaabjerg, and H. Wang, “Wide-scale adoption of
photovoltaic energy: Grid code modifications are explored in the distribution
grid,” IEEE Ind. Appl. Mag., vol. 21, no. 5, pp. 21–31, Sept 2015.
[2]
B. Singh, A. Chandra and K. A. Haddad, Power Quality: Problems and Mitigation
Techniques. London: Wiley, 2015.
[3]
M. Bollen and I. Guo, Signal Processing of Power Quality Disturbances. Hoboken:
Johm Wiley, 2006.
[4]
P. Jayaprakash, B. Singh, D. Kothari, A. Chandra, and K. Al-Haddad, “Control of
reduced-rating dynamic voltage restorer with a battery energy storage system,” IEEE
Trans. Ind. Appl., vol. 50, no. 2, pp. 1295– 1303, March 2014.
[5]
M. Badoni, A. Singh, and B. Singh, “Variable forgetting factor recursive least
square control algorithm for DSTATCOM,” IEEE Trans. Power Del., vol. 30,
no. 5, pp. 2353–2361, Oct 2015.
