Fine Tuning Of State Estimator Using Phasor Values From Pmu's

Authors

  • Prayaga Kavya  PG scholar, Department of EEE, Acharya Institute of Technology, Bangalore, India
  • R S Shivakumara Aradhya  Professor, Department of EEE, Acharya Institute of Technology, Bangalore, India

Keywords:

PMU, EMS, State estimator, linear estimator, SRPG System

Abstract

State estimation is a key function of the Energy Management System (EMS), providing a reliable and consistent data, by processing the information obtained from telemetering or remote units. Traditional power system state estimators are subject to considerable changes because of the extensive application of Phasor Measurement Unit (PMU). The availability of synchro-phasor data has raised the possibility of a linear state estimator if the inputs are only complex currents and voltages and if there are enough such measurements to meet observability and redundancy requirements. The unique ability to calculate synchronized phasors at high precision makes the phasor measurement unit (PMU) an important measuring device to improve the accuracy of state estimation. In this paper, the linear model of state estimation is proposed to show the important contribution of PMU measurements to the power system state estimation. The effectiveness of the proposed state estimation algorithm is validated using standard IEEE 14 bus test system and real time 637 bus southern grid network of Indian power system.

References

  1. Jun, D., Ze-xiang, C., and Keying, W., “An overview of state estimation based on wide-area measurement system,” Automat. Elect. Power Syst., Vol. 30, No. 7, pp. 5–9, 2006.
  2. Phadke, A. G., Thorp, J. S., and Karimi, K. J., “State estimation with phasor measurements,” IEEE Trans. Power Syst., Vol. 1, No. 1, pp. 233–240, February 1986.
  3. Zhao, L., and Abur, A., “Multiarea state estimation using synchronized phasor measurements,” IEEE Trans. Power Syst., Vol. 20, No. 2, pp. 611–617, May 2005.
  4. Zhou, M., Centeno, A., Thorp, J. S., and Phadke, A. G., “An alternative for including phasor measurements in state estimation,” IEEE Trans. Power Syst., Vol. 21, No. 4, pp. 1930–1937, November 2006.
  5. Stefopoulos, G. K., Alaileh, R. H., Cokkinides, G. J., and Meliopoulos, A. P. S., “On three phase state estimation in the presence of GPS synchronized phasor measurements ,”Proceedings of 39th North American Power Symposium, pp. 406–412, Las Cruces, NM, 30 September– 2 October 2007.
  6. Monticelli, A., State Estimation in Electric Power Systems—A Generalized Approach, Boston: Kluwer Academic Publishers, 1999
  7. TP Vishnu, Vidya Viswan and Vipin A M “Power System State Estimation and Bad Data Analysis Using Weighted Least Square Method”, IEEE International Conference on Power, Instrumentation, Control and Computing (PICC),20152.
  8. A.G.Phadke,‘Synchronized phasor measurements in power systems’, IEEE Transactions on computer application, Power, vol. 6, no. 2, pp. 10–15, 1993.
  9. Ankhi Gulati, Niyati Gulati and Anil Kumar, “Effect of Bad measurements on IEEE-14 Bus System in Power System State Estimation”, Vol. 4, No. 2, August 2014, pp. 100-103, ISSN 2230-7656 ©MIT Publications
  10. “Distributed Power System State Estimation” Raffi Sevlian and Umnouy Ponsukcharoen Stanford University, Stanford, CA,

Downloads

Published

2018-05-08

Issue

Section

Research Articles

How to Cite

[1]
Prayaga Kavya, R S Shivakumara Aradhya, " Fine Tuning Of State Estimator Using Phasor Values From Pmu's, IInternational Journal of Scientific Research in Computer Science, Engineering and Information Technology(IJSRCSEIT), ISSN : 2456-3307, Volume 4, Issue 6, pp.1051-1057, May-June-2018.