Improvisation on Standard Limit of the Critical Clearing Time Specified for the Protection Relays Using one Machine Infinite Bus Equivalent

Abstract:

This paper presents a computationally accurate technique used to determine the critical clearing time using the one machine infinite bus equivalent system based on the equal area criterion. The critical clearing time is the maximum time interval by which the fault must be cleared in order to preserve the system stability. The computation of critical clearing time involves an intrinsic mathematical formulation derived from the pre-fault, during fault and post-fault conditions. The value of critical clearing time becomes significantly less when transient instability is induced by a three phase fault occurred at the bus bar closest to the substation connected with a sensitive generator. By setting the protection relay with the obtained value of critical clearing time, it is adequate to sustain the transient stability even though fault happened at the other locations. During the occurrence of fault, a circuit breaker which is operating earlier than the smallest critical clearing time will not agitate to a transient instability. The IEEE Reliability Test System 1979 (RTS-79) is used to verify the robustness of the methodology in a determining the critical clearing time.

• Periodical: Applied Mechanics and Materials (Volume 785)
• Pages: 343-347
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.785.343
• Online since: August 2015
• Authors: Nur Ashida Salim*, Muhammad Murtadha Othman, Ismail Musirin, Mohd Salleh Serwan
• Keywords: Critical Clearing Time, One Machine Infinite Bus, Transient Stability

References

[1] S. Ayasun, Y. Liang, and C. O. Nwankpa, A sensitivity approach for computation of the probability density function of critical clearing time and probability of stability in power system transient stability analysis, Applied Mathematics and Computation, vol. 176, pp.563-576 (2006).

DOI: 10.1016/j.amc.2005.10.003

[2] B. K. S. Roy, A. K. Pradhan, and A. K. Sinha, Fuzzy Logic Based Fast Critical Clearing Time Assessment, presented at the 16th National Power Systems Conference (2010).

[3] B. Boussahoua and M. Boudour, Critical Clearing Time Evaluation of Power System with UPFC by Energetic Method, Journal of Electrical Systems, vol. 1, pp.85-88 (2009).

[4] N. Hashim, N. Hamzah, M. F. A. Latip, and A. A. Sallehhudin, Transient Stability Analysis of the IEEE 14-Bus Test System Using Dynamic Computation for Power Systems (DCPS), in 2012 Third International Conference on Intelligent Systems, Modelling and Simulation (ISMS), pp.481-486 (2012).

DOI: 10.1109/isms.2012.53

[5] R. Zarate-Minano, T. Van Cutsem, F. Milano, and A. J. Conejo, Securing Transient Stability Using Time-Domain Simulations Within an Optimal Power Flow, IEEE Transactions on Power Systems, vol. 25, pp.243-253 (2010).

DOI: 10.1109/tpwrs.2009.2030369

[6] Y. Xue, T. Van Cutsem, and M. Ribbens-Pavella, A simple direct method for fast transient stability assessment of large power systems, IEEE Transactions on Power Systems, vol. 3, pp.400-412 (1988).

DOI: 10.1109/59.192890

[7] K. Hyungchul and C. Singh, Probabilistic security analysis using SOM and Monte Carlo simulation, in IEEE Power Engineering Society Winter Meeting, 2002, pp.755-760 vol. 2 (2002).

DOI: 10.1109/pesw.2002.985107

[8] P. M. Subcommittee, IEEE Reliability Test System, IEEE Transactions on Power Apparatus and System, vol. PAS-98, pp.2047-2054 (1979).

DOI: 10.1109/tpas.1979.319398

[9] S. M. Sadeghzadeh, M. Ehsan, N. Hadj Said and R. Feuillet, Improvement of Transient Stability Limit in Power System Transmission Lines Using Fuzzy Control of FACTS Devices, IEEE Transactions on Powcr Systems, vol. 13, pp.917-922 (1998).

DOI: 10.1109/59.708802