Load-shedding techniques for microgrids: A comprehensive review

Diana Rwegasira, Imed Ben Dhaou, Aron Kondoro, Amleset Kelati, Nerey Mvungi, Hannu Tenhunen
2019 International Journal of Smart Grid and Clean Energy  
The increasing interest in integrating renewable energies source has raised concerns about control operations. The presence of new energy sources, distributed storage, power electronic devices and communication links make a power system's control and monitoring more complex and adaptive than ever before. Recently, the use of agentbased distributed control has seen to have a significant impact on the grid and microgrid controls. The load-shedding technique is among the features used to balance
more » ... e power consumption in the power system upon less power production. Towards achieving these, different mechanisms, algorithms, challenges, and approaches have been developed and hence need to be reviewed and integrated from the system solution perspective. This research focuses on the review of the state-of-the-art load-shedding techniques, whereby the focus is on control algorithms, simulation platforms and integrations, and control devices for DC microgrid. The research also investigates open issues and challenges that need further investigations. The analyses reported in the paper upholds the importance of the distributed multi-agent system, MAS, in implementing distinct control operations including load-shedding. The effectiveness of the control operations using MAS rely on low-latency and secure communication links in which IoT has been branded as a promising technology for implementing distributed MAS Demand-Response program is an advanced feature supported by the smart-grid. The program aims at, among others, improving the efficiency of the grid, reducing the electricity bill, lowering the operating cost, and combating carbon dioxide emission. Load-shedding (LS) is an effective technique for the realization of the demand-response program. LS aims at matching demands and supplies under various objectives. In the context of smart-grid with distributed energy resources load-shedding has been used for different responses such as reduces the interruption cost at the feeders, insures voltage stability, stabilizes the voltage and frequency in the power system, improves the reliability of the distribution system, restores
doi:10.12720/sgce.8.3.341-353 fatcat:exdmxo3vkjhnjjue3t24qr2dhq