Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Complete and Incomplete Observability Analysis by Optimal PMU Placement Techniques of a Network

  • Krishna, K. Bala (Dept. of Electrical and Electronic Engineering, Vignan's Foundation for Science, Technology & Research) ;
  • Rosalina, K. Mercy (Dept. of Electrical and Electronic Engineering, Vignan's Foundation for Science, Technology & Research) ;
  • Ramaraj, N. (School of Electrical engineering and computing, Adama Science and Technology University)
  • Received : 2017.05.30
  • Accepted : 2018.04.23
  • Published : 2018.09.01
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Abstract

State estimation of power systems has become vital in recent days of power operation and control. SCADA and EMS are intended for the state estimation and to communicate and monitor the systems which are operated at specified time. Although various methods are used we can achieve the better results by using PMU technique. On placing the PMU, operating time is reduced and making the performance reliable. In this paper, PMU placement is done in two ways. Those are 'optimal technique with pruning operation' and 'depth of unobservability' considering incomplete and complete observability of a network. By Depth of Unobservability Number of PMUs are reduced to attain Observability of the network. Proposed methods are tested on IEEE 14, 30, 57, SR-system and Sub systems (1, 2) with bus size of 270 and 444 buses. Along with achieving complete observability analysis, single PMU loss condition is also achieved.

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References

  1. A.G.Phadke, "Synchronized phasor measurements in power systems," IEEE comput. Appl. Power, vol. 6, no. 2, pp. 10-15, Apr. 1993. https://doi.org/10.1109/67.207465
  2. S. Chakrabarti and E. Kyriakides, "Optimal placement of phasor measurement units for power system observability," IEEE Trans. Power syst., vol. 23, no. 3, pp. 1433-1440, Aug. 2008. https://doi.org/10.1109/TPWRS.2008.922621
  3. R. F. Nuqui and A. G. Phadhe, "Phasor measurement unit placement techniques for complete and incomplete observability," IEEE Trans. Power Del, vol. 20, no. 4, pp. 2381-2388, Oct 2005. https://doi.org/10.1109/TPWRD.2005.855457
  4. B. K. Saha Roy, A. K. Sinha, A. K. Pradhan "An optimal PMU placement technique for power system observability," Electrical Power and Energy Systems 42 (71-77), IIT, Kharagpur, India, 2012. https://doi.org/10.1016/j.ijepes.2012.03.011
  5. Preksha P. Dalawai and A. R. Abhyankar, Member, IEEE "Placement of PMUs for complete and incomplete observability using search technique," annual IEEE India Conference (INDICON), 2013.
  6. S. C. Srivastava, A. Velayutham, and A. S. Bakshi, Report of the Enquiry Committee on Grid Distrubance in Northern Region on 30th July 2012 and in Northern, Eastren and North-eastern Region on 31st July 2012. New Delhi, India. [online]. Available: http://www.powermin.nic.in/pdf/GRID_ENQ_REP_16_8_12.pdf.
  7. M. Rihan, M.Ahmad, and M. .S. Beg, "Phasor measurements units in the Indain smart grid," in Proc. IEEE Power Eng. Soc. Conf. Innovative Smart Grid Technol., Kollam, India, Dec. 1-3, 2011, pp. 261-267.
  8. Anamitra Pal, Gerardo A. Sanchez-Ayala, Virgilio A. Centeno and James S. Thorp "A PMU Placement scheme ensuring real-time monitoring of critical buses of the network," IEEE Trans, Power Delivery, vol. 29, no. 2, pp. 510-517, April. 2014. https://doi.org/10.1109/TPWRD.2013.2279172