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Adaptive and optimal under frequency load shedding
, 2008 Power systems in many countries are stressed towards their stability limit. If these stable systems experience any unexpected serious contingencies, or disturbances, there is a significant risk of instability, which may lead to wide-spread blackout ...
Chin, V. +4 more
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Adaptive load shedding for an industrial petroleum cogeneration system
Expert Systems with Applications, 2011Abstract This paper presents the design of adaptive load-shedding strategy by executing the artificial neural network (ANN) and transient stability analysis for an Industrial cogeneration facility. ► To prepare the training data set for ANN, the transient stability analysis has been performed to solve the minimum load shedding for various operation ...
Cheng-Ting Hsu +2 more
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Adaptive Under Frequency Load Shedding using PMU
2009 7th IEEE International Conference on Industrial Informatics, 2009Under Frequency Load Shedding, UFLS, is the last step and the most extreme in protecting electric power systems from black outs and severe damages. Adaptive UFLS methods using df/dt are unreliable. SCADA is too slow to achieve a proper protection of the power system under severe over load condition.
Rasha M. El Azab +2 more
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Data Triage: An Adaptive Architecture for Load Shedding in TelegraphCQ
21st International Conference on Data Engineering (ICDE'05), 2005Many of the data sources used in stream query processing are known to exhibit bursty behavior. Data in a burst often has different characteristics than steady-state data, and therefore may be of particular interest. In this paper, we describe the Data Triage architecture that we are adding to TelegraphCQ to provide low latency results with good ...
Frederick Reiss 0001 +1 more
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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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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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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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An Adaptive Underfrequency Load Shedding Scheme in the Presence of Solar Photovoltaic Plants
IEEE Systems Journal, 2021Load shedding is performed, as last option, for emergency measure when system frequency drifts below the allowed limit. Utilities use underfrequency load shedding schemes to bring back frequency within limit. In this article, an adaptive underfrequency load shedding scheme is proposed for the power system in the presence of solar photovoltaic plants ...
Arkadipta Chandra, Ashok Kumar Pradhan
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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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