Design of an automatic load monitoring and load shedding device
Abstract
Over time, the negative impact of overload in the distribution system network has resulted in a growing need for a more sophisticated control and monitoring system. Several methods have been limited to monitoring the electric power, power system loading level and transfer load from one feeder to another. To this end, this study focuses on designing an automatic load monitoring and load shedding device, a Supervisory Control and Data Acquisition (SCADA) device designed for utility and the University of Benin Teaching Hospital (UBTH) distribution system to prevent contingency. The method adopted is based on the load audit report carried out on the UBTH distribution network. A model is proposed, and the load audit report is used to structure the UBTH distribution network into critical and essential load demands. Each feeder is monitored, and priority is given to critical loads during load shedding. Finally, a prototype of an automatic load monitoring and load shedding device is designed and implemented with the capacity to perform the desired function. The efficiency of the proposed system is evaluated by carrying out a monitoring test, loading test, control test and converter test, which all tested satisfactorily.
Downloads
References
Bahadornejad and N. K. C. Nair, “Automatic under frequency load shedding in New Zealand power system-A systematic review,’’ AUPEC, Brisbane, QLD, Australia, vol. 4, no. 9, pp.1-7, 2011.
U. K. Jethewa, R. K. Bansal, D. Ninad, and R. Vaishnav, “Comprehensive load-shedding system,” IEEE Transactions on power system, vol. 46, no. 2, pp. 115-120, 2010.
F. O. Odiase and P. T. Aikhoje, “Design of solar electricity (pv) system to power UBTH, accident and emergency operating theatre,’’ NIPES Journal of Science and Technology Research, vol. 3, no. 4, pp. 174-180, 2021.
C. Alvarez, R. P. Malhane, A. Galbaldon, “A class of models for load management application and evaluation revisited’’, IEEE Transaction on Power Systems, vol. 7, no. 4, pp. 1435, 1992.
X. Wu., S. Feng, and P. Jiang, “Distributed coordination load-shedding of islanded micro-grids based on sub-gradient algorithm,” IEEE Access, vol. 5, no. 1, pp. 27879 - 27886, 2017.
M. M. E. Sissa, S. M. Wasfy and M. M. Sallam, “Load management system using intelligent monitoring and control system for commercial and industrial sectors,” Open Access Journal of Energy Systems, vol. 1, no. 2, pp. 1-18, 2012.
S. Meharkure, N. Kinhekar, “Smart monitoring of automatic under frequency load shedding (SMOAUFLS),’’ International Conference for Emerging Technology (INCET), Belguam, India, vol.6, pp. 1- 6, 2020.
R. Diana., D. Imed Ben, K. Aron, K. Amleset. M. Nerey, T. Hannu,” Load-shedding techniques for micro-grids: A comprehensive review,’’ International Journal of Smart Grid and Clean Energy, vol. 8, no. 3, pp. 343-353, 2019.
B. O. Wang, B. Zhang, H. Zhiguo, “Emergency Load shedding control for islanded micro-grids based power Monitoring and rate of change,’’ Automation of Electric power systems, vol. 39, no. 8, pp. 33-37, 2015.
F. Hosain, A. Jawad, B. Nahid-AL, “Optimal load shedding allocation for preserving frequency stability in a large scale PV integrated Grid,” International Conference for advancement in technology (ICONAT), vol. 5, no. 3, pp. 78-85, 2023.
O. S. Athila, M. M. Renato, V. C. Denis, O. Maria, “A new real-time multi-agent system for under frequency load shedding in a smart grid,” Electric Power Systems Research, vol. 174, no. 9, pp. 166 - 173, 2019.
L. Chunfeng, Z. Donsheng, S. Jinan, Z. Xin, Y. Lei, W. Hongyuan, “Research on coordinated optimisation strategy for multi-region emergency load shedding,” International Conference on Energy, Electrical and Power Engineering, vol. 6, no. 10, pp. 168 - 175, 2023.
Nashid-Al-Masood, H. S. Nahid, R. D. Shanona, R. M. Seema, “A frequency and voltage stability-based load shedding technique for low inertia power systems,’’ IEEE Access, vol. 9, pp. 78947-78961, 2021.
H. Brevran, A. G. Tikdari, and T. Hiyama, “Power system load shedding: Key issues and new perspectives,” International Journal of Electrical and Computer Engineering, vol. 4, no. 5, pp. 199-204, 2010.
M. Hamed, H. O. Siew, M. Mahmoud, A. A. Haider, “Load shedding and smart-direct load control using internet of things of smart-grid demand response management,” IEEE Transactions on Industry Applications, vol. 53, no. 6, pp. 5155-5163, 2017.
Copyright (c) 2023 Golden Enobakhare, Festus O. Omoruyi, Samuel E. Ogunbor, Orile I. VoiceofGod
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
