DECENTRALIZED ESTIMATION FOR AGC OF POWER SYSTEMS

Xue-Bo Chen, Xiaohua Li, Srdjan S. Stankovic

Abstract

A decentralized state estimation method for automatic generation control (AGC) of interconnected power systems is proposed in this paper. Based on the Inclusion Principle for linear stochastic systems, the state space model of the system is decomposed as a group of pair-wise subsystem models. The overlapping decentralized estimators and fully decentralized estimators are designed for each pair subsystems in the framework of LQG control schemes. Two types of estimators are considered for the cases of full and reduced measurement sets in the framework of system closed-loop operations. Simulation results show a high quality of the AGC scheme based on dynamic controllers with the proposed state estimators.

References

  1. Calovic, M. S., 1972. Linear Regulator Design for A Load and Frequency Control. IEEE Trans. Power. App. Sys., Vol. PAS-9, 2271-2285.
  2. Calovic, M. S., 1984. Automatic Generation Control: Decentralized Area-Wise Optimal Solution. Electric Power Systems Research, Vol. 7, 115-139.
  3. Chen, X. -B., 1994. Some Aspects of Control Systems Design Based on The Inclusion Principle. Ph. D. dissertation, Univ. of Belgrade.
  4. Chen, X. -B., Stankovic, S. S., 1996. Overlapping Decomposition and Decentralized LQG Control for Interconnected Power Systems. Proc. IEEE SMC'96, Vol.3. 1904-1909.
  5. Chen, X. -B., Siljak, D. D., Stankovic, S. S., 2002. Decentralized H8 Design of Automatic Generation Control. Proc. of IFAC 15th World Congress. Barcelona, Spain, July 21-26, 307-312.
  6. Hodzic, M., Siljak, D.D., 1986. Decentralized Estimation and Control With Overlapping Information Sets. IEEE Trans. Aut. Control, Vol. AC-31, 81-86.
  7. lftar, A., 1993. Overlapping Decentralized Dynamic Optimal Control. Int. J. Contr., Vol. 58, 187-209.
  8. Ikeda, M., Siljak, D. D., 1986. Overlapping Decentralized Control with Input, State and Output Inclusion. Control Theory and Advanced Technology, Vol. 2, 155-172.
  9. Ikeda, M., Siljak, D. D., White, D. E., 1981. Decentralized Control with Overlapping Information Sets. J. Optirniz. Theory and Appl, Vol. 34, 279-310.
  10. Malik, O. P., Hope, G. S., 1984/1985. Decentralized Suboptimal Load-Frequency Control of A HydroThermal Power System Using the State Variable Model. Electric Power systems Research, Vol. 8, 237- 247.
  11. Ohtsuka, K., Morioka, Y., 1997. A Decentralized Control System for Stabilizing a Longitudinal Power System Using Tie-Line Power Flow Measurements. IEEE Trans. on Power Systems, Vol.12, 1202-1209.
  12. Park Y. M., Lee, K. Y., 1984. Optimal Decentralized Load Frequency Control. Electric Power systems Research, Vol. 7, 279-288.
  13. Siljak, D. D., 1978. Large-scale Dynamic Systems: Stability and Structure. North-Holland, NY.
  14. Siljak, D. D., 1991. Decentralized Control of Complex Systems. Academic Press, New York.
  15. Stankovic, S. S., Chen, X. -B., Matausek, M. R., Siljak, D. D., 1999. Stochastic Inclusion Principle Applied To Decentralized Automatic Generation Control. Int. J. Contr. Vol. 72, 276-288.
Download


Paper Citation


in Harvard Style

Chen X., Li X. and Stankovic S. (2004). DECENTRALIZED ESTIMATION FOR AGC OF POWER SYSTEMS . In Proceedings of the First International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO, ISBN 972-8865-12-0, pages 257-263. DOI: 10.5220/0001126402570263


in Bibtex Style

@conference{icinco04,
author={Xue-Bo Chen and Xiaohua Li and Srdjan S. Stankovic},
title={DECENTRALIZED ESTIMATION FOR AGC OF POWER SYSTEMS},
booktitle={Proceedings of the First International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO,},
year={2004},
pages={257-263},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001126402570263},
isbn={972-8865-12-0},
}


in EndNote Style

TY - CONF
JO - Proceedings of the First International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO,
TI - DECENTRALIZED ESTIMATION FOR AGC OF POWER SYSTEMS
SN - 972-8865-12-0
AU - Chen X.
AU - Li X.
AU - Stankovic S.
PY - 2004
SP - 257
EP - 263
DO - 10.5220/0001126402570263