POWER QUALITY IMPROVEMENTS

1. INTELLIGENT ISLANDING AND RECONNECTION
TECHNIQUE FOR MICRO GRID WITH UPQC
Guided by: Dr.V.GOMATHI
Student Name:Logumani.V
(2014280011)

2. CONTENTS
SCOPE
WORKDONE
ABSTRACT
INTRODUCTION
BLOCK DIAGRAM
SIMULATION CIRCUITS AND
RESULTS
REFERENCES

3. SCOPE
 To maintain the voltage profile variation, real and
reactive power control in the transmission line.

4. INTRODUCTION
In recent years, Flexible AC Transmission Systems
(FACTS) is used in power electronics based
equipment to power quality control.
The UPQC is a device which can control
simultaneously all three parameters of line power
flow
1. STATCOM
2. DVR

5. BLOCK DIAGRAM
AC SOURCE LOAD
SERIES
TRANSFORMER
SHUNT
TRANSFORMER
PULSE GENERATOR
CONVERTER-1 CONVERTER-2

6. WORK DONE IN PHASE 1
•Basic UPQC system is simulated
•UPQC system in islanded mode is simulated
•UPQC system is interconnected mode is simulated
WORK TO BE DONE IN PHASE 2
To investigate The Nine Bus UPQC model, closed
loop control with compare the Time domain
parameters like rise time, peak time and settling time.

7. UPQC 9-BUS SYSTEM CLOSED LOOP

8. OUTPUT VOLTAGE
RMS VOLTAGE
Time in sec
Time in sec

9. REAL POWER
REACTIVE POWER
Time in sec
Rise time=0.33 Peaktime=0.36 Settling time=0.39
Steady state error(V)=3.15
Time in sec

10. REFERENCES
[1] S. K. Khadem, M. Basu, and M. F. Conlon, “UPQC for power quality improvement
in DG integrated smart grid network—A review,” Int. J. Emerg. Electr. Power Syst.,
vol. 13, no. 1, p. 3, 2012.
[2] A. Kahrobaeian and Y.-R. Mohamed, “Interactive distributed generation interface
for flexible micro-grid operation in smart distribution systems,” IEEE Trans.
Sustainable Energy, vol. 3, no. 2, pp. 295–305, Apr. 2012.
[3] X. Yu, A. M. Khambadkone, H. Wang, and S. Terence, “Control of parallel-
connected power converters for low-voltage microgrid—Part I: A hybrid control
architecture,” IEEE Trans. Power Electron., vol. 25, no. 12, pp. 2962–2970, Dec. 2010.
[4] S. K. Khadem, M. Basu, and M. F. Conlon, “A new placement and integration
method of UPQC to improve the power quality in DG network,” in Proc. 48th UPEC,
vol. 1. Sep. 2013, pp. 1–6.
[5] T. Jimichi, H. Fujita, and H. Akagi, “Design and experimentation of a dynamic
voltage restorer capable of significantly reducing an energy-storage element,” IEEE
Trans. Ind. Appl., vol. 44, no. 3, pp. 817–825, May/Jun. 2008.