POWER QUALITY
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This presentation discusses power quality improvement in small isolated distribution systems using a DSTATCOM (Distribution Static Compensator) with fuzzy logic control. It aims to regulate voltage, reduce harmonics, correct power factor, and balance loads. The system contains a DSTATCOM connected in parallel to regulate voltage and correct power factor as loads change. Simulation results show the DSTATCOM improves power quality by correcting power factor, balancing loads, and regulating voltage under different load conditions using both PI and fuzzy logic controllers. The presentation concludes fuzzy logic control of a DSTATCOM is effective for power quality improvement in small isolated power systems like ships, islands, and remote generation sites.
![REFERENCE
[1] Bhim Singh, Alka Adya, A.P. Mittal, J.R.P. Gupta,“Power
Quality Enhancement with DSTATCOM for Small Isolated
Alternator feeding Distribution System”,IEEE conference on
PEDS,2005.
[2] N.G.Hingorani and L.Gyugyi, Understanding FACTS,
Standard Publishers, Delhi. 2001.
[3] E. Acha, V.G. Agelegis, O. Anaya-Lara and T.J.E. Miller,
Power Electronic Control in Electrical Systems, Newness
Power Engineering Series, Oxford, Britain, 2002.
[4] A.Ghosh and G.Ledwitch, Power Quality Enhancement using
Custom Power Devices, Kluwer Academic Publishers,
London, 2002.
[5] N. Hingorani, “FACTS - Flexible ac transmission systems”,
in Proc. IEE 5th Int. Conf. AC / DC Transmission, London,
U.K. Conference Conf. Pub. 345, pp. 1–7, 1991
[6] “Introducing custom power”, IEEE Spectrum, vol. 32, pp. 41–
48, June 1995.](https://image.slidesharecdn.com/aishvaryamajorfinals-170424104843/85/POWER-QUALITY-25-320.jpg)
![.
[7] IEEE Standard Board, “IEEE Std. 1159-1995”, IEEE Recommended
Practice for Monitoring Electric Power Quality”, IEEE Inc. New York,
1995.
[8] A. M. Gole, O. B. Nayak, T.S. Sidhu, and M. S. Sachdev, “A graphical
electromagnetic simulation laboratory for power systems engineering
programs”. Transactions on Power Systems, vol. 11, May 1996, pp. 599-
606.
[9] Roger C. Dugan, Mark F. Mc Granaghan and H. Wayne Beaty, ,
“Electrical power systems quality”, Mc Graw-Hill publication,1996,
TK1001.D84 ,pp. 1-8 and 39-80.
[10] D. D. Sabin, “An assessment of distribution system power quality”,
Electrical Power Research Institute, EPRI Final Report TR-106294-V2,
Palo Alto, CA, 1996.
[11] A. Hernandez, K. E. Chong, G. Gallegos, and E. Acha, “The
implementation of a solid state voltage source in PSCAD/EMTDC”, IEEE
Power Engineering Review, Dec 1998, pp. 61-62.
[12] G. F. Reed, M. Takeda, I. Iyoda, “Improved power quality solutions
using advanced solid-state switching and static compensation
technologies”, IEEE Power Engineering Society Winter Meeting
USA.IEEE, 31st Jan.- 4th Feb, New York, 1999 pp. 2-11.
[13] S. Nilsson, “Special application considerations for custom power
systems”, Proc. IEEE Power Engineering Society, Winter Meeting, vol.
2,1999, pp. 1127–1130.](https://image.slidesharecdn.com/aishvaryamajorfinals-170424104843/85/POWER-QUALITY-26-320.jpg)
![.
[14]E. Acha, V.G. Agelegis, O. Anaya-Lara and T.J.E.Miller, Power
Electronic Control in Electrical Systems,Newness Power Engineering
Series, Oxford, Britain,2002.
[15]A.Ghosh and G.Ledwitch, Power Quality
Enhancement using Custom Power Devices, Kluwer Academic Publishers,
London, 2002.
[16] W. E.Reid, “Power Quality issues – Standards andguidelines”, IEEE
Transaction on Power Delivery, Vol.32, No.3, May/ June 1996.
[17] M. F. Naguib and L. A. C. Lopes, “Harmonics reduction in current source
converters using fuzzy logic,” IEEE Trans. Power Electron., vol. 25, no. 1,
pp. 158–167, Jan. 2010.
[18] R. Arnold, “Solutions to the power quality problem”, Power Engineering
Journal, Vol. 15, No. 2, April2001,pp. 65-73.
[19] [Online].Available:http://www.yamahageneratorstore.c
om/ef2800i.htm
[20] B. N. Singh, A. Chandra and K. Al-Haddad, “DSP based indirect-current
controlled STATCOM-I Evaluation of current controlled techniques,” IEE
Proc. on Electric Power Applications, Vol.147.2, March 2000, pp.107-112.
[21] Harish Suryanarayana and Mahesh k. Mishra, “Fuzzy logic based
supervision of DC link PI control in a DSTATCOM “, IEEE India
conference 2008,volume-2,pages 453-458](https://image.slidesharecdn.com/aishvaryamajorfinals-170424104843/85/POWER-QUALITY-27-320.jpg)
POWER QUALITY
- 1. A Presentation on Power Quality Improvement with DSTATCOM using Fuzzy Controller Based Small Isolated Distribution System By Aishvarya Narain
- 2. CONTENTS • Power Quality • Solution to Power Quality Problem • Objectives • Isolated System • DSTATCOM • System Description • Schematic Diagram of System • Conclusions • Future Scope of Work • List of Publications • References
- 3. POWER QUALITY • Power Quality is described as the variation of voltage, current and frequency in power system. • If electrical equipment operates correctly and reliably without being damaged or stressed, we would say that the electrical power is of good quality. • On the other hand, if the electrical equipment malfunctions, is unreliable, or is damaged during normal usage, we would say that the power quality is poor.
- 4. SOLUTION TO POWER QUALITY PROBLEM • Passive Filters have been most commonly used to limit the flow of harmonic currents in distribution systems. • The performances of Conventional method (LC Filter) is not satisfactory due to the drawbacks. • Among the different new technical options available to improve power quality, D-STATCOM have proved to be an important and flexible alternative to compensate for current and voltage disturbances in power distribution systems.
- 5. OBJECTIVES • To analyze the effect of linear and non-linear loads on power system. • Power Quality improvement for small isolated system • Voltage Regulation • Harmonics Reduction • Power Factor Correction • Load Balancing
- 6. ISOLATED SYSTEM • Ships • Off shore Plants • Diesel Engine Trains • Aircrafts • Islands
- 7. DSTATCOM • STATCOM is a controlled reactive power source which provides the desired reactive power generation and absorption by means of VSC. • The VSC consist of shunt Transformer, DC Capacitor, IGBT with back to back diode making a bridge. • STATCOM is an adjustable voltage source behind a reactance.
- 8. FUNCTIONAL MODEL OF STATCOM
- 9. SYSTEM DESCRIPTION • The model contains STATCOM for load balancing, power factor correction and voltage regulation to small isolated alternator feeding distribution system supplying power to a linear unbalance load. • VSC as a DSTATCOM connected in parallel with the system. • DSTATCOM considered here as a controlled reactive source.
- 10. • Three phase AC supply voltages and DC link voltages are sensed and converted into their per unit values to fed the two PI Controller and fuzzy logic controller. • A capacitor is connected in parallel with VSI to obtain self supporting DC bus to maintain constant voltage in the system. • VSI consist IGBT switches fired by gate pulse generated through the Hysteresis controller. • System also consist of linear R-L load.
- 11. SCHEMETIC DIAGRAM OF SYSTEM
- 12. SIMULINK MODEL FOR INCREASE LOAD
- 13. SIMULINK MODEL FOR THREE PHASE TO TWO LOAD
- 14. Power Factor Correction Using PI Controller
- 15. Power Factor Correction Using Fuzzy Controller
- 16. Voltage Regulation Using PI Controller
- 17. Voltage Regulation Using Fuzzy Logic Controller
- 18. DSTATCOM for Load Balancing and Power Factor Correction Using PI Controller
- 19. DSTATCOM for Load Balancing and Power Factor Correction Using Fuzzy Controller
- 20. DSTATCOM for Load Balancing and Voltage Regulation Using PI Controller
- 21. DSTATCOM for Load Balancing and Voltage Regulation Using Fuzzy Controller
- 22. CONCLUSIONS • Fuzzy Logic Control used for regulation of voltage and correction of power factor with the help of DSTATCOM is proposed here. As the load changes or load is reduced there are variations in the load current, voltage and DC capacitance voltage. • DSTATCOM is able for correction to power factor, load balancing and regulation in the voltage profile. • It is useful for aircraft, ship, islands, submarine and isolated remote power generation where grid connected power generation is not really available and we need to generate and distribute AC power.
- 23. FUTURE SCOPE • Improve Power Quality of a small isolated alternator system by some advance techniques. • Implementation of Sugeno Fuzzy Controller (SFC) for modeling and controlling of DSTATCOM • In order to obtain voltage regulation by using two Fuzzy logic controller. • Power factor correction can be improved using the above.
- 24. PUBLICATIONS • Aishvarya Narain and S.K.Srivastava, “Power Quality Improvement by Shunt Active Power Filter Using 12 pulse Inverter”, IEEE-International Conference on Emerging Trends in Electrical, Electronics & Sustainable Energy Systems,(IEEE- ICETEESES-16), vol.2, pp 198-203, Mar. 2016. • Aishvarya Narain and S.K.Srivastava, “An Overview of Facts Devices used for Reactive Power Compensation Techniques”, International Journal of Engineering Research & Technology (IJERT),vol. 4(12) ,pp 81-85, Dec 2015.
- 25. REFERENCE [1] Bhim Singh, Alka Adya, A.P. Mittal, J.R.P. Gupta,“Power Quality Enhancement with DSTATCOM for Small Isolated Alternator feeding Distribution System”,IEEE conference on PEDS,2005. [2] N.G.Hingorani and L.Gyugyi, Understanding FACTS, Standard Publishers, Delhi. 2001. [3] E. Acha, V.G. Agelegis, O. Anaya-Lara and T.J.E. Miller, Power Electronic Control in Electrical Systems, Newness Power Engineering Series, Oxford, Britain, 2002. [4] A.Ghosh and G.Ledwitch, Power Quality Enhancement using Custom Power Devices, Kluwer Academic Publishers, London, 2002. [5] N. Hingorani, “FACTS - Flexible ac transmission systems”, in Proc. IEE 5th Int. Conf. AC / DC Transmission, London, U.K. Conference Conf. Pub. 345, pp. 1–7, 1991 [6] “Introducing custom power”, IEEE Spectrum, vol. 32, pp. 41– 48, June 1995.
- 26. . [7] IEEE Standard Board, “IEEE Std. 1159-1995”, IEEE Recommended Practice for Monitoring Electric Power Quality”, IEEE Inc. New York, 1995. [8] A. M. Gole, O. B. Nayak, T.S. Sidhu, and M. S. Sachdev, “A graphical electromagnetic simulation laboratory for power systems engineering programs”. Transactions on Power Systems, vol. 11, May 1996, pp. 599- 606. [9] Roger C. Dugan, Mark F. Mc Granaghan and H. Wayne Beaty, , “Electrical power systems quality”, Mc Graw-Hill publication,1996, TK1001.D84 ,pp. 1-8 and 39-80. [10] D. D. Sabin, “An assessment of distribution system power quality”, Electrical Power Research Institute, EPRI Final Report TR-106294-V2, Palo Alto, CA, 1996. [11] A. Hernandez, K. E. Chong, G. Gallegos, and E. Acha, “The implementation of a solid state voltage source in PSCAD/EMTDC”, IEEE Power Engineering Review, Dec 1998, pp. 61-62. [12] G. F. Reed, M. Takeda, I. Iyoda, “Improved power quality solutions using advanced solid-state switching and static compensation technologies”, IEEE Power Engineering Society Winter Meeting USA.IEEE, 31st Jan.- 4th Feb, New York, 1999 pp. 2-11. [13] S. Nilsson, “Special application considerations for custom power systems”, Proc. IEEE Power Engineering Society, Winter Meeting, vol. 2,1999, pp. 1127–1130.
- 27. . [14]E. Acha, V.G. Agelegis, O. Anaya-Lara and T.J.E.Miller, Power Electronic Control in Electrical Systems,Newness Power Engineering Series, Oxford, Britain,2002. [15]A.Ghosh and G.Ledwitch, Power Quality Enhancement using Custom Power Devices, Kluwer Academic Publishers, London, 2002. [16] W. E.Reid, “Power Quality issues – Standards andguidelines”, IEEE Transaction on Power Delivery, Vol.32, No.3, May/ June 1996. [17] M. F. Naguib and L. A. C. Lopes, “Harmonics reduction in current source converters using fuzzy logic,” IEEE Trans. Power Electron., vol. 25, no. 1, pp. 158–167, Jan. 2010. [18] R. Arnold, “Solutions to the power quality problem”, Power Engineering Journal, Vol. 15, No. 2, April2001,pp. 65-73. [19] [Online].Available:http://www.yamahageneratorstore.c om/ef2800i.htm [20] B. N. Singh, A. Chandra and K. Al-Haddad, “DSP based indirect-current controlled STATCOM-I Evaluation of current controlled techniques,” IEE Proc. on Electric Power Applications, Vol.147.2, March 2000, pp.107-112. [21] Harish Suryanarayana and Mahesh k. Mishra, “Fuzzy logic based supervision of DC link PI control in a DSTATCOM “, IEEE India conference 2008,volume-2,pages 453-458
- 28. THANK YOU