Load Modeling based on Real Data applying PSO Algorithm

  • Afshar Bali West Regional Electric Company, Kermanshah-Iran
  • Hamdi Abdi
  • Ali Rostami Islamic Azad University, South Tehran Branch
  • Shahram Karimi
Keywords: Load Modeling, Static Load Model, Dynamic Load Model, Load Model Parameters


Load modeling is one of the most important features in power system operation and stability studies. So far, various methods have been applied based on measuring the relevant load data, and obtaining the load models through the mathematical models. This paper presents a method for load modeling based on processing the recorded data by the measurement equipment with PSO algorithm, which is located in substations. In the proposed method, for improving the accuracy of the load model, some constraints are applied for eliminating the undesirable measured data. These constraints are applicable for any time periods, such as; hourly, daily, seasonally, and annually. Furthermore, a combination of the static and dynamic models is utilized. The performance of the proposed method is tested on two industrial power grids from the west regional electric company (WREC) network, and the results are thoroughly analyzed. The results have shown that the proposed method has an acceptable accuracy for load modeling in comparison with real model of the case study systems.


[1] Ma. Jin, Han. Dong, RenMu. He., Measurement–based Load modeling: Theory and application. Science in Cina Series E: Technological Sciences, vol.50, no. 2, pp. 606-617, 2007
[2] P. Kundur. Power System Stability and Control. McGraw-Hill Education, January 1994.
[3] P-H. Haung, T-H. Tseng. Analysis for effects of load characteristics on power system voltage stability. AASRI Procedia, vol. 2, pp. 229-234, 2012.
[4] B-Y. Ku, R-J. Thomas, C-Y. Chiou, C-J. Lin. Power system dynamic load modeling using artificial neural networks. IEEE Transactions on Power Systems, vol. 9, no.4, pp.1868-1874, December 1994.
[5] J-V. Milanovic, K. Yamashita, S-M Villanueva, S-Z. Djokic, and L-M Korunovi. International industry practice on power system load modeling. IEEE Transactions on Power Systems, vol. 28, no. 3, pp. 3038-3046, August 2013.
[6] J-C. Wang, H-D. Chiang, C-L. Chang, A-H. Liu, C-H. Huang, and C-Y. Huang. Development of a frequency-dependent composite load model using the measurement approach. IEEE Transactions on Power Systems, vol. 9, no.3, pp.1546-1553, August 1994.
[7]C-L. Chang, and P-H. Huang. Load Modeling Study Using Measurement Data for Taiwan Power System. Journal of Marine Science and Technology, vol. 22, no. 5, pp. 643-649, October 2014.
[8]H. Bai., P. Zhang, V. Ajjarapu. A Novel Parameter Identification Approach via Hybrid Learning for Aggregate Load Modeling. IEEE Transactions on Power Systems, vol. 24, no. 3, pp. 1145-1154, August 2009.
[9]A. Bokhari, A. Alkan, R. Dogan, M-D. Aguilo, F-D. Leon, D. Czarkowski, Z. Zabar, L. Birenbaum, A. Noel, and R. Uosef. Experimental determination of the ZIP coefficients for modern residential, commercial, and industrial loads. IEEE Transactions on Power Delivery, vol. 29, no. 3, pp. 1372–1381, June 2014.
[10]D. Karlsson, and D-J. Hill. Modeling and Identification of Nonlinear Dynamic Loads in Power Systems. IEEE Transactions on Power Systems, vol. 9, no. 1, pp. 157–166, February 1994.
[11] D. Kosterev, A. Meklin, J. Undrill, B. Lesieutre, W. Price, D. Chassin, R. Bravo, and S. Yang. Load Modeling in Power System Studies: WECC Progress Update. IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, July 2008.
[12]A. Patel, K. Wedeward, and M. Smith. Parameter Estimation for Inventory of Load Models in Electric Power Systems. Proceedings of the World Congress on Engineering and Computer Science, October 2014.
[13]D-S. Brereton, D-G. Lewis, and C-C. Young. Representation of induction motor loads during power system stability studies. Transactions of the American Institute of Electrical Energies, vol.76, no. 3, pp. 451–460, April 1957.
[14]J-V. Milanović, K. Yamashita, S-M Villanueva, S-Ž. Djokić, and L-M. Korunović. International Industry Practice on Power System Load Modeling. IEEE Transactions on Power System, vol. 28, no. 3, august 2013.
[15]J. Ma, R-M. He, Z-Y. Dong, D-J. Hill. Measurement-based Load Modeling using Genetic Algorithms. IEEE Congress on Evolutionary Computation, September 2007.
[16] IEEE Report. Proposed Excitation System Definitions for Synchronous Machines. IEEE Transactions on Power Apparatus and Systems, Vol. PAS-88, no. 8, pp. 1248-1258, August 1969.
[17] Dobrivoje P. Stojanovi´c a, Lidija M. Korunovi´c a, J. V. Milanovi. Dynamic Load Modeling Based on Measurements In Medium Voltage Distribution Network. Electric Power Systems Research, vol. 78, n0. 2, pp. 228–238, February 2007.
[18] T. Gentile, S. Ihara, A, Murdoch, N. Simons. Determining Load Characteristics for Transient Performance. University of Texas at Arlington, Vol. 2, May 2018.
[19] T. Gentile. Determining Load Characteristics for Transient Performance. General Electric Company, Electric Power Research Institute, March 1981.
[20] W-W. Price, K-A. Wirgue, A. Murdoch, J-V. Mitsche, E. Vaahedi, M-E. Kady. Load Modeling for Power Flow and Transient Stability Studies. IEEE Transactions on Power Systems, vol. 3, no. 1, pp. 180-187, February 1988.
[21]S-A-Y. Sabir, and D-C. Lee. Dynamic Load Models Derived from Data required during System Transients. IEEE Transactions on Power Apparatus and Systems, Vol. PAS-101, no. 9, pp. 3365-3372 . September 1982.
[22]G. Shackshaft, O-C. Symons, and J-G. Hadwick. General Purpose Model of Power System Load. Proceedings of the Institute of Electrical Engineers, vol. 124 , no. 8, pp. 715-723 . August 1977.
[23] West Regional Power Electric Company of Kermanshah-Iran. The Data Bank of the Recorded Energy for Industrial Usage. 2013-2014.
How to Cite
Bali, A., Abdi, H., Rostami, A., & Karimi, S. (2019). Load Modeling based on Real Data applying PSO Algorithm. Majlesi Journal of Electrical Engineering, 13(3), 15-25. Retrieved from http://mjee.iaumajlesi.ac.ir/index/index.php/ee/article/view/3021