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Adaptive load shedding scheme for frequency stability enhancement in microgrids
Electric Power Systems Research, 2016The imbalance between the generated power and the load demand is the major factor that is usually responsible for frequency instability in power systems, most especially islanded microgrids. To determine the size of the loads that should be shed and their appropriate locations in the power system, to maintain the system frequency within the permissible
Mousa Marzband +3 more
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Adaptive market based load shedding scheme
2015 IEEE Power & Energy Society General Meeting, 2015This paper develops and presents an adaptive market-based load shedding scheme that provides options for adaptive selection of loads in real-time. Therefore an ancillary market-based system where consumers as well as system operator have options to contribute to system security can be evolved.
Kaium Uz Zaman Mollah +1 more
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Adaptation in load shedding under vulnerable operating conditions
IEEE Transactions on Power Systems, 2002The proposed approach to avoiding catastrophic failures in interconnected power systems uses a defeusive system based on multiagent system technologies. Because of their dynamic environments, these agents need to automatically adjust their decision criteria. The method of reinforcement learning with temporal differences can provide a suitable basis for
J. Jung +3 more
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Case study: An adaptive underfrequency load-shedding system
Industry Applications Society 60th Annual Petroleum and Chemical Industry Conference, 2013Underfrequency (UF) schemes are implemented in nearly every power system and are deemed critical methods to avert system-wide blackouts. Unfortunately, UF-based schemes are often ineffective for industrial power systems. Traditional UF schemes are implemented in either discrete electromechanical relays or microprocessor-based multifunction relays ...
Scott Manson, Greg Zweigle, Vinod Yedidi
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Multicriterial adaptive load shedding algorithm
PowerTech Budapest 99. Abstract Records. (Cat. No.99EX376), 2003This paper presents a conception of a multicriterial adaptive load shedding algorithm that is assigned to thermal power units when the island work conditions connected with the dynamic growing energy shortfall occurs. The main purpose of the multicriterial adaptive load shedding algorithm is determination of the real unbalance of the electric power ...
G. Sodzawiczny, P. Sowa
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Adaptive underfrequency load shedding and underfrequency load restoration system
2005 IEEE Russia Power Tech, 2005Paper deals with the problem of power system control during emergency situation, caused by generating power deficiency. Deep frequency decline usually is prevented with the help of frequency-actuated load shedding automation. Analysis of existing load shedding system showed possibility of power system blackout due to improper parameters of emergency ...
V. Chuvychin, N. Gurov, S. Rubcov
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New approach of adaptive automatic load shedding
European Transactions on Electrical Power, 2001AbstractIn the paper a new approach of adaptive automatic load shedding, a procedure for protecting electric power systems from dynamic instability and frequency collapse is presented. It is consisted of two main stages. In the first stage the frequency and the rate of its change are estimated by nonrecursive Newton type algorithm and least error ...
Terzija, V. V., Koglin, H. J.
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An adaptive microcomputer based load shedding relay
Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370), 2003Automatic load shedding is the primary protection against frequency instability due to power deficiency. This paper describes the design of a digital adaptive under-frequency load shedding relay. The relay implements a new adaptive load shedding scheme, in which the set of shedding feeders is selected adaptively based on the online measurement of load ...
Z. Zhang +4 more
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