Investigation study to achieve a logarithmic reduction strategy for load shedding based on priority demand

  • Authors

    • Yasir F. Hasan Dept. of Electrical Engineering, College of Engineering, University of Baghdad / Baghdad /Iraq
    • Firas M. Tuaimah Dept. of Electrical Engineering, College of Engineering, University of Baghdad / Baghdad /Iraq
    2019-06-30
    https://doi.org/10.14419/ijet.v7i4.28196
  • Load Shedding, Load Matrix, Priority of Demand, Importance matrix, Reduction Matrix.
  • Many countries around the globe suffer from a long time power shortage as a result of excess load, lack of generation, and inefficient distribution networks. The load shedding scheme has been extremely implemented as a fast solution for unbalance conditions. Therefore, load shedding is crucial to investigate supply-demand balancing in order to protect the network from collapsing and to sustain stability as possible; however, its implementation is mostly undesirable. The conventional methods of load shedding lead to over or under shedding and this may lead to many problems with the network. Under the scheme, these methods disconnect the load or the entire feeder without considering their priorities and may not perform as anticipated. In this work, we propose a logarithmic reduction method to reduce the load according to the priority and day life criticality. The method for shedding the loads base on Reduction Matrix and which in turn depend on the priority demands. The higher priority demands are fed with a reliable power source by the real-time monitoring of the network accompanied with power reducing for the lower priority demands. We test a real data sample provided by the Iraqi national grid control center in Baghdad. Our simulation results prove the effectiveness and practicality of the applied method paving the way for possible applications in power systems.

     

     

  • References

    1. [1] P. kundur, “power system stability and control.†New York, NY, USA: McGraw-Hill, 1994.

      [2] P. Kundur, J. Paserba, V. Ajjarapu, and G. Andersson, “Definition and Classification of Power System Stability,†IEEE Trans. Power Syst., vol. 19, no. 3, pp. 1387–1401, 2004. https://doi.org/10.1109/TPWRS.2004.825981.

      [3] M. A. Abdulsada and F. M. Tuaimah, “Power System Static Security Assessment for Iraqi Super High Voltage Grid,†International Journal of Applied Engineering Research, vol. 12, no. 19, pp. 8354–8365, 2017.

      [4] M.C. Ramachandran and K. Elango, “Improvement of power quality of power system using contingency analysis,†International Journal of Engineering & Technology, vol. 7, pp. 237–241, 2018. https://doi.org/10.14419/ijet.v7i2.21.12180.

      [5] S. Hirodontis, H. Li, and P. A. Crossley, “Load Shedding in a Distribution Network,†in IEEE International Conference on Sustainable Power Generation and Supply, 2009, pp. 1–6. https://doi.org/10.1109/SUPERGEN.2009.5348255.

      [6] J. Xu, W. Qi, L. Wang, and Y. Liu, “Study of Load Shedding Procedure for Power System Voltage Stability,†in IEEE PES Transmission and Distribution Conf. Expo., 2010, no. 1, pp. 1–4. https://doi.org/10.1109/APPEEC.2010.5448210.

      [7] A. A. Emhemed, R. Ishat, and A. N. Abdalla, “Determination of Critical Overload Transmission Line Using Novel Maximum Power Line Stability Index,†International Journal of Engineering & Technology, vol. 7, pp. 155–163, 2018.

      [8] T. K. Tailor, Y. Kumar, and M. Dubey, “Congestion Management by Optimal Generation Rescheduling Using Sine Cosine Algorithm,†International Journal of Engineering & Technology, vol. 7, no. 4, pp. 4962–4967, 2018.

      [9] C. W. Taylor, “Concepts of Undervoltage Load Shedding for Voltage Stability,†IEEE Transactions on Power Delivery, vol. 7, no. 2, pp. 480–488, 1992. https://doi.org/10.1109/61.127040.

      [10] P. M. Anderson and M. Mirheydar, “An Adaptive Method for Setting Under Frequency Load Shedding Relays,†IEEE Trans. Power Syst., vol. 7, no. 2, pp. 647–655, 1992. https://doi.org/10.1109/59.141770.

      [11] U. Rudez and R. Mihalic, “Analysis of Underfrequency Load Shedding Using a Frequency Gradient,†IEEE Trans. Power Del., vol. 26, no. 2, pp. 565–575, 2011. https://doi.org/10.1109/TPWRD.2009.2036356.

      [12] V. V. Terzija, “Adaptive Underfrequency Load Shedding Based on the Magnitude of the Disturbance Estimation,†IEEE Trans. Power Syst., vol. 21, no. 3, pp. 1260–1266, 2006. https://doi.org/10.1109/TPWRS.2006.879315.

      [13] H. Seyedi and S. M. Pasand, “New centralised adaptive load-shedding algorithms to mitigate power system blackouts,†IET Generation, Transmission & Distribution, vol. 3, no. 1, pp. 99–114, 2009. https://doi.org/10.1049/iet-gtd:20080210.

      [14] U. Rudez and R. Mihalic, “Monitoring the First Frequency Derivative to Improve Adaptive Underfrequency Load-Shedding Schemes,†IEEE Trans. Power Syst., vol. 26, no. 2, pp. 839–846, 2011. https://doi.org/10.1109/TPWRS.2010.2059715.

      [15] A. Saffarian and M. S. Pasand, “Enhancement of Power System Stability Using Adaptive Combinational Load Shedding Methods,†IEEE Trans. Power Syst., vol. 26, no. 3, pp. 1010–1020, 2011. https://doi.org/10.1109/TPWRS.2010.2078525.

      [16] A.P. Ghaleh, M. S. Pasand, and A. Saffarian, “Power system stability enhancement using a new combinational load-shedding algorithm,†IET Generation, Transmission & Distribution, vol. 5, no. 5, pp. 551–560, 2011. https://doi.org/10.1049/iet-gtd.2010.0626.

      [17] Lu M., ZainalAbidin W. A. W., Masri T., Lee D. H., and Chen S., “Under-Frequency Load Shedding ( UFLS ) Schemes – A Survey,†International Journal of Applied Engineering Research, vol. 11, no. 1, pp. 456–472, 2016.

      [18] M. A. Mostafa, G. A. N. Mbamalu, and M. M. Mansour, “Effects of prioritizing demand on optimal load shedding policy,†ELSEVIER Electrical Power & Energy Systems, vol. 18, no. 7, pp. 415–424, 1996. https://doi.org/10.1016/0142-0615(95)00076-3.

      [19] J. A. Laghari, H. Mokhlis, M. Karimi, A. H. Bakar, and H. Mohamad, “A New Under-Frequency Load Shedding Technique Based on Combination of Fixed and Random Priority of Loads for Smart Grid Applications,†IEEE Trans. Power Syst., vol. 30, no. 5, pp. 2507–2515, 2015. https://doi.org/10.1109/TPWRS.2014.2360520.

      [20] Rao K. U., Bhat S. H., Ganeshprasad G., Jayaprakash G., and Pillappa S. N, “A Novel Grading Scheme for Loads to Optimize Load Shedding Using Genetic Algorithm in a Smart Grid Environment,†in IEEE Innovative Smart Grid Technologies-Asia (ISGT Asia), 2013, pp. 1–6. https://doi.org/10.1109/ISGT-Asia.2013.6698742.

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  • How to Cite

    F. Hasan, Y., & M. Tuaimah, F. (2019). Investigation study to achieve a logarithmic reduction strategy for load shedding based on priority demand. International Journal of Engineering & Technology, 7(4), 6528-6533. https://doi.org/10.14419/ijet.v7i4.28196