A Novel Method of Static Security Analysis Based on Multithread Technology

Abstract:

With the UHV (Ultra High Voltage) power grid construction and the interconnection of regional power grids, the scale of power grids in China is increasing rapidly. At the same time, significant uncertainty and variability is being introduced into power grid operation with the integration of large-scale renewable energy in power systems. All of these pose an enormous challenge to the operation control of power systems in China. For a long time, online static security analysis, as an important part of EMS (Energy Management System), has been an effective tool for power grid operation. However, it is increasingly difficult for traditional static security analysis in serial computing mode to be online applied in bulk power grids in China. A new practical parallel approach for online static security analysis is put forward in this paper. A multithread parallelism is introduced into contingency screening, detailed contingency evaluation and decision support for reducing the execution time. By employing the multithread technology, the hardware resources of multi-processor/multi-core computer can be fully used and the program can be speeded up effectively. The performance of the parallel static security analysis is demonstrated by tests on two large-scale power systems. The test results show that the proposed method can be online applied in real bulk power grids.

• Periodical: Advanced Materials Research (Volumes 732-733)
• Pages: 639-645
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.732-733.639
• Online since: August 2013
• Authors: Bi Qiang Tang, Yi Jun Yu, Shu Hai Feng, Feng Li
• Keywords: Multithread, Online Static Security Analysis, Power System

References

[1] B. Stott, O. Alsac, and A. Monticelli, "Security analysis and optimization," Proceedings of the IEEE, 75, No. 12, p.1623–1644, 1987.

DOI: 10.1109/proc.1987.13931

[2] J. S. Wu,Static Security Analysis on Electric Power System, Shanghai: Shanghai Jiaotong University Press, 1985 (in Chinese).

[3] G. Ejebe, B.F. Wollemberg, "Automatic contingency selection," IEEE Trans. Power Apparatus Syst, PAS–98 (1), p.97–109, 1979.

DOI: 10.1109/tpas.1979.319518

[4] J.A. Refaee, M. Mohandes, H. Maghrabi, "Radial basis function networks for contingency analysis of bulk power systems," IEEE Trans. on Power system, 0885–8950, vol.14, no.2, p.772–778, 1999.

DOI: 10.1109/59.761911

[5] D. V. M. Chary, J. Amarnath, "Power System Contingency Analysis Using Complex Valued Neural Networks," International Journal of Applied Engineering Research, 0973–4562, vol.4, no.9, p.1789–1800, 2009.

[6] C. Tinguely, A. Bart, A.J. Germont, "Knowleadge base for and expert system used for steady state security analysis," Electrical Power Energy Syst. 16 (1), p.49–58, 1994.

DOI: 10.1016/0142-0615(94)90057-4

[7] J. C. Mendes, O. R. Saavedra, S. Feitosa, "A parallel complete method for real-time security analysis in power systems," Electric Power Systems Research, 56, p.27–34, 2000.

DOI: 10.1016/s0378-7796(00)00094-8

[8] A. B. Alves, A. Monticelli, "Static security analysis using pipeline decomposition," IEE proceedings. Part C, Generation, Transmission, and Distribution, 1350–2360, vol. 145, no. 2, p.105–110, 1998.

DOI: 10.1049/ip-gtd:19981785

[9] D. Butenhof, "Programming with POSIX threads," Addison-Wesley Professional Computing Series, 1997.

[10] S. M. CHAN, V. BRANDWAJN, "Partial matrix refactorization," IEEE Trans. on Power System, PWRS-1(1), p.193–200, 1986.

DOI: 10.1109/tpwrs.1986.4334868

[11] B. Q. Tang, F. Li, Y. J. Yu, et al, "Online contingency analysis considering automatic device simulation for large power systems," Automation of Electric Power Systems, vol. 35, no. 14, p.107–111, 2011 (in Chinese).