Control Strategy for Distribution Static Compensator based on Instantaneous Reactive Power Theory for Power Quality Improvement in Distribution System

Nonlinear loads inject harmonics in the power system and distorts the load current waveform. These load current harmonics ultimately give rise to harmonics on the supply side and hence can affect the neighboring consumers. Custom power technology is employed to avert issues of power quality on the source side. Among numerous custom power tools, Distribution Static Compensator (D-STATCOM) is considered to be an effectual Shunt Active Power Filter to banish current harmonics, providing a good balance between cost and performance. A control strategy based on Instantaneous Reactive Power (IRP) theory for D-STATCOM is discussed in this paper. D-STATCOM is controlled to compensate for reactive power and to discard the objectionable harmonics injected in the distribution system by nonlinear load. Anti-harmonics current is inserted in the grid lines by the mentioned Shunt Active Power Filter, which nullify the harmonics introduced by the nonlinear load. To be used for the nullification of current harmonics, D-STATCOM is connected parallel with the load. Moreover, the power factor of the system is ameliorated along with a significant decrease in Total Harmonic Distortion (THD) in the source current. The model is simulated in MATLAB/SIMULINK in order to investigate the performance and efficiency of the propounded system. The simulation results reveal expeditious dynamic response and high precision of D-STATCOM in achieving the desired goals.

1. Umar Farooq: Department of Electrical Engineering, University of Engineering and Technology Peshawar, Pakistan
2. Kaleem Ullah: Department of Electrical Engineering, University of Engineering and Technology Peshawar, Pakistan
3. Dr. Muhammad Naeem Arbab: Department of Electrical Engineering, University of Engineering and Technology Peshawar, Pakistan

Umar Farooq Kaleem Ullah and Dr. Muhammad Naeem Arbab Control Strategy for Distribution Static Compensator based on Instantaneous Reactive Power Theory f International journal of Engineering Works Vol. 6 Issue 03 PP. 71-77 March 2019

1. [1] W. Jewell, “Electrical power systems quality”, 2nd edition, IEEE Power and Energy Magazine, Vol. 99, Issue 5, Sept.-Oct. 2003.
2.  [2]  P. Reveulta, S. Litran, J. Thomas, “Active Power Line Conditioners”, 1st Edition, Academic Press, 2015.
3. [3]   M. L. Crow, ”Power quality enhancement using custom power devices”, IEEE Power and Energy Magazine, Vol. 2 , Issue 2 , Mar-Apr 2004.
4. [4]   Y. Pal, A. Swarup, B. Singh, “A Review of Compensating Type Custom Power Devices for Power Quality Improvement”, Power System Technology and IEEE Power India Conference, Oct 2008.
5. [5]   M. Ucar, E. Ozdemir, “Control of a 3-phase 4-leg active power filter under non-ideal mains voltage condition”, Electric Power Systems Research, Vol. 78, Issue 1, pp. 58-73, 2008.
6. [6]   B. Singh, S. Kumar, “Modified Power Balance Theory for control of DSTATCOM”, International Conference on Power Electronics, Drives and Energy Systems (PEDES), Dec. 2010.
7. [7]   B. Singh, P. Jayaprakash, D. P. Kothari, “New control approach for capacitor supported DSTATCOM in three-phase four wire distribution system under non-ideal supply voltage conditions based on synchronous reference frame theory”, International Journal of Electrical Power & Energy Systems, Vol. 33, Issue 5, pp. 1109-1117, 2011.
8. [8]   B. Singh, P. Jayaprakash, S. Kumar, D. P. Kothari, “Implementation of Neural-Network-Controlled Three-Leg VSC and a Transformer as Three-Phase Four-Wire DSTATCOM”, IEEE Transactions on Industry Applications, Vol. 47, Issue 4, July-Aug.2011.
9. [9]   B. Singh and J. Solanki, “A Comparision of Control Algorithms for DSTATCOM,” IEEE Transactions on Industrial Electronics, Vol 56, Issue 7, pp. 2738-2745, 2009.
10. [10]        S. R. Arya, B. Singh, R. Niwas, A. Chandra, K, Al-Haddad, “Power Quality Enhancement Using DSTATCOM in Distributed Power Generation System”, IEEE Transactions on Industry Applications,      Vol. 52, Issue 6, Nov.-Dec. 2016.
11. [11]         K. Padiyar, “FACTS Controllers in Power Transmission and Distribution”, New Age International, 2007.
12. [12]         H. Akagi, Y. Kanazawa, and A. Nabae, “Instantaneous Reactive power compensators comprising Switching Devices without Energy Storage Components,”IEEE Transactions on Industry Applications, vol.IA-30, no. 3, pp. 625-630, 1984.
13. [13]         H. Akagi, E. H. Watanabe, and M. Aredes, “Instantaneous Power Theory and Applications to Power Conditioning”, Hoboken, NJ: Wiley, 2007.
14. [14] Herrera RS, Salmeron P, Kim H, “Constraints of instantaneous reactive power p-q theory”, IET Power Electronics, Vol. 7, Issue 9, 2014.
15. [15]         Singh B, Solanki J, “Mitigation of power quality problems using distribution static synchronous compensator: a comprehensive review”, IET Power Electronics, Vol. 8, Issue 7, 2015.
16. [16]         C. Harkare, P. Kapoor, “Study and Simulation of Current Controlled PWM Inverters and their applications”, Internation Journal on Recent and Innovation Trends in Computing and Communication, vol. 3, no. 2, pp. 138-142, Feb. 2015.
17. [17]         K. Venkatraman, M. P. Selvan, S. Moorthi, “Predictive Current Control of Distribution Static Compensator for Load Compensation in Distribution System” IET Generation, Transmission and Distribution, vol. 10, no. 10, pp. 2410-2423, July 2016.
18. [18] M. A. E. Alali, J-P Barbot, “A First Order Sliding Mode Controller for Grid Connected Shunt Active Filter with a LCL Filter” IFAC-PapersOnLine, vol. 50, no. 1, pp. 14812-14817, July 2017.
19. [19] P. D. Ziogas, “The delta modulation technique in static PWM inverters”, IEEE Trans. Ind. Appl., vol. IA-18, no. 2, pp. 199-204, 1981.