Fault Diagnosis Algorithm and Protection of Electric Power Systems in an Alternative Distribution System

  • Oshin Ola Austin Department of Electrical and Electronics Engineering, Elizade University, Nigeria
  • Oluwasanmi Alonge Department of Electrical and Electronics Engineering, Elizade University, Nigeria
  • Ajayi Joseph Adeniyi Department of Electrical and Electronics Engineering, Elizade University, Nigeria
Keywords: Power System, Fault Current, Protective Devices, Distribution System

Abstract

In any power systems, protective devices will detect fault conditions and operate circuit breakers in order to disconnect the load from the fault current and limit loss of service due to failure. This fault may involve one or more phases and the ground, or may occur between two or more phases in a three-phase systems. In ground, fault’ or ‘earth fault, current flows into the earth. In a poly-phase system, a fault may affect each of the three phases equally which is a symmetrical fault. If only some phases are affected, the resulting ‘asymmetrical fault’ becomes more complicated to analyze due to the simplifying assumption of equal current magnitude in all the phases being no longer applicable. Therefore, the prospective short circuit current of the fault can be calculated for power systems analysis procedures. This will assist in the choice of protective devices like circuit breakers, current transformers and relays. This research work evaluated and analyzed the occurrence of faults in a distribution system. Fault currents were obtained and the maximum tripping time required for the protective devices to operate were determined. Hence, it was possible to select appropriate relay and circuit breaker for effective operation of a distribution

References

Azam, M. S., Tu, F., Pattipati, K. R., & Karanam, R. (2004). A dependency model-based approach for identifying and evaluating power quality problems. IEEE Transactions on power delivery, 19(3), 1154-1166.
Bernstein, T. (1991). Electrical fires: causes, prevention, and investigation. Electrical hazards and accidents: their cause and prevention, Van Nostrand Reinhold, New York, 116-134.
Carlos, M. (2011). Fault Analysis in Electrical works and distribution Lines. Green and co Ltd, London, 77.
De Almeida, A., Moreira, L., & Delgado, J. (2003, April). Power quality problems and new solutions. In International Conference on Renewable Energies and Power Quality (Vol. 3).
Deshmukh, S. M., Dewani, B., & Gawande, S. P. (2013). A review of power quality problems-voltage sags for different faults. International Journal of Scientific Engineering and Technology, 2(5), 392-397.
Ekici, S. (2012). Support Vector Machines for classification and locating faults on transmission lines. Applied soft computing, 12(6), 1650-1658.
Noe, M., & Steurer, M. (2007). High-temperature superconductor fault current limiters: concepts, applications, and development status. Superconductor science and technology, 20(3), R15.
Parise, G., & Parise, L. (2013). Unprotected faults of electrical and extension cords in AC and DC systems. IEEE Transactions on Industry Applications, 50(1), 4-9
Weedy, B. M., Cory, B. J., Jenkins, N., Ekanayake, J. B., & Strbac, G. (2012). Electric power systems. John Wiley & Sons.
Published
2020-12-01
How to Cite
Austin, O. O., Alonge, O., & Adeniyi, A. J. (2020). Fault Diagnosis Algorithm and Protection of Electric Power Systems in an Alternative Distribution System. Journal La Multiapp, 1(3), 8-16. https://doi.org/10.37899/journallamultiapp.v1i3.192