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2013 21st Iranian Conference on Electrical Engineering (ICEE), 2013
Similar to conventional systems, having acceptable voltage and frequency is necessary in a microgrid (MG). This issue is realized by grid in grid-connected mode. But in islanded mode, it depends on proper controllers in primary, secondary and emergency levels.
Neda Hajimohamadi, Hassan Bevrani
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Similar to conventional systems, having acceptable voltage and frequency is necessary in a microgrid (MG). This issue is realized by grid in grid-connected mode. But in islanded mode, it depends on proper controllers in primary, secondary and emergency levels.
Neda Hajimohamadi, Hassan Bevrani
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Integrated Underfrequency Load Shedding Strategy for Islanded Microgrids Integrating Multiclass Load-Related Factors [PDF]
IEEE Transactions on Smart GridReducing the decision response time of load shedding while considering the comprehensive value of load shedding is one of the main challenges faced in emergency control of islanded microgrids. However, the existing underfrequency load shedding strategies
Lei Xi, Zhuoli Zhao, Chun Sing Lai
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On load shedding in microgrids
18th Electric Power Distribution Conference, 2013Similar to conventional systems, having acceptable voltage and frequency is necessary in a MG. MGs have variable nature due to the existence of the generators like PVs. Because of this, the control issue in MGs is important. The stable performance in MGs is realized by grid in grid-connected mode.
N. Hajimohamadi, H. Bevrani
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IEEE Industry Applications Magazine, 2011
This article demonstrates the need for a modern load-shedding system and introduces the new technology of intelligent load shedding (ILS) that goes beyond a contingency-based load-shedding scheme. A case study of the application of an ILS scheme in a large industrial facility is provided.
Farrokh Shokooh +6 more
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This article demonstrates the need for a modern load-shedding system and introduces the new technology of intelligent load shedding (ILS) that goes beyond a contingency-based load-shedding scheme. A case study of the application of an ILS scheme in a large industrial facility is provided.
Farrokh Shokooh +6 more
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2007 60th Annual Conference for Protective Relay Engineers, 2007
This paper discusses why voltage as well as frequency load shedding may be necessary to prevent major system blackouts. Investigations of recent blackouts indicate that the root cause of almost all of these major power system disturbances is voltage collapse rather than the underfrequency conditions prevalent in the blackouts of the 1960 and '70s. This
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This paper discusses why voltage as well as frequency load shedding may be necessary to prevent major system blackouts. Investigations of recent blackouts indicate that the root cause of almost all of these major power system disturbances is voltage collapse rather than the underfrequency conditions prevalent in the blackouts of the 1960 and '70s. This
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Example of undervoltage load shedding implementation
AFRICON 2007, 2007After deregulation of power systems, large problems with voltage stability incurred due to the large transits of power transmitted to large distances. Systems are very stressed and often work on their limits. Therefore, single contingency is sometimes enough to cause system collapsing.
Klarić, Mario +2 more
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On influence of load modelling for undervoltage load shedding studies
IEEE Transactions on Power Systems, 1998This paper explores the influence of load models on decisions of undervoltage load shedding in power systems. A controlled load rejection can be used as an emergency countermeasure to avoid widespread blackout when system voltages are unstable. In this paper, dynamic simulations of a small power system using both static and dynamic load models are ...
Arnborg, S +3 more
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Automatic Underfrequency Load Shedding in ESCOM
IFAC Proceedings Volumes, 1980Abstract Low frequency conditions can occur on power systems as a result of the loss of large amounts of generation or when sections with insufficient generation are severed from the main system. Protection against these conditions is required. This paper describes the approach adopted by the Electricity Supply Commission of South Africa.
C.P. Levy, C.A. Haupt
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A heuristic approach to load shedding scheme
IEEE Transactions on Power Systems, 1989The authors describe some of the present problems which exist in the operation of power systems, and how an expert system can be utilized to enhance the performance of the system by implementing load shedding as one of alternatives in the restoration of a large-scale power system.
S. Shah, S. M. Shahidehpour
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Distributed load shedding with minimum energy
IEEE INFOCOM 2016 - The 35th Annual IEEE International Conference on Computer Communications, 2016This paper proposes distributed load shedding policies for regulating excessive network load. Data packets are inserted into the network to be delivered to intended destinations. The intermediate network nodes may decide to forward or shed some packets depending on temporally available resources.
Kostas Choumas +3 more
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