Results 71 to 80 of about 104 (84)
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Adaptive undervoltage load shedding relay design using Thevenin equivalent estimation
2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008Power transmission systems of today are operating closer to their limit. In the event of a developing blackout, the disconnection of loads under controlled conditions can maintain system's stability. Undervoltage load shedding (UVLS) is an economical solution to the voltage stability problem, and provides protection for unusual disturbances outside the
Shu-Jen Steven Tsai, Kim-Hoi Wong
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Relay-based undervoltage load shedding scheme for Entergy's Western Region
2015 IEEE Power & Energy Society General Meeting, 2015Fault-induced delayed voltage recovery (FIDVR) is a major concern in bulk electric systems, especially in high load growth areas of the system which may be limited in generation and transmission. As part of an overall emergency plan to manage exposure to low voltage conditions and resulting voltage instability under summer peak load conditions, a fast ...
Sharma V. Kolluri +5 more
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A Study on the Relation between the Maximum Loadability Point and Undervoltage Load Shedding Schemes
2020 IEEE Power & Energy Society General Meeting (PESGM), 2020In Electrical Power Systems (EPS), traditional voltage stability assessment techniques are based on the solution of algebraic equations to identify the static voltage stability margin (VSM) and the maximum loadability point (MLP) of the system. The estimation of the VSM and the MLP depends on the load growth direction and also on possible events that ...
Roman Kuiava +3 more
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An adaptive load shedding method based on the underfrequency and undervoltage combined relay
2015 34th Chinese Control Conference (CCC), 2015The conventional UVLS (undervoltage load shedding) relay and the UFLS (underfrequency load shedding) relay, designed separately without considerations on load characters and mutual influences of the voltage and the frequency, may result in excessive or insufficient load curtailments.
Li Ye +3 more
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2013 IEEE 8th Conference on Industrial Electronics and Applications (ICIEA), 2013
This paper presents new intelligent-based technique namely Quantum-Inspired Evolutionary Programming-Artificial Neural Network (QIEP-ANN) to predict the amount of load to be shed in a distribution systems during undervoltage load shedding. The proposed technique is applied to two hidden layers feedforward neural network with back propagation.
Zuhaila Mat Yasin +2 more
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This paper presents new intelligent-based technique namely Quantum-Inspired Evolutionary Programming-Artificial Neural Network (QIEP-ANN) to predict the amount of load to be shed in a distribution systems during undervoltage load shedding. The proposed technique is applied to two hidden layers feedforward neural network with back propagation.
Zuhaila Mat Yasin +2 more
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Applied Mechanics and Materials, 2015
This paper presents a new technique to predict the optimal amount of load to be shed at various loading conditions using Quantum-Inspired Evolutionary Programming–Support Vector Machine (QIEP-SVM). QIEP is utilised to optimise the RBF Kernel parameters in Least-Square Support Vector Machine (LS-SVM). The objective of the optimisation is to minimise the
Zuhaila Mat Yasin +2 more
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This paper presents a new technique to predict the optimal amount of load to be shed at various loading conditions using Quantum-Inspired Evolutionary Programming–Support Vector Machine (QIEP-SVM). QIEP is utilised to optimise the RBF Kernel parameters in Least-Square Support Vector Machine (LS-SVM). The objective of the optimisation is to minimise the
Zuhaila Mat Yasin +2 more
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Influence of induction motor modelling for undervoltage load shedding studies
IEEE/PES Transmission and Distribution Conference and Exhibition, 2003This paper explores the influence of modelling induction motor loads for undervoltage load shedding studies. A first order and a third order dynamic load model in terms of real power, reactive power and voltage are defined using the 'slip' and 'slip flux' induction motor models, respectively.
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Undervoltage load shedding improving security as reasonable measure for extreme contingencies
IEEE Power Engineering Society General Meeting, 2005, 2005This paper highlights the effectiveness of undervoltage load shedding as reasonable measures to avoid cascading such as August 14/sup th/ outage against extreme contingencies. The security of decentralized UVLS program can be improved without degrading dependability by adding continuous voltage decay detection technique, on which TEPCO has long history.
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199 IEEE Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.99CH36364), 2003
Engineers have long been struggling with developing voltage stability criteria for their systems. The development of the criteria becomes even more difficult if one attempts to apply the criteria to an entire region such as the one within Western Systems Coordinating Council (WSCC).
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Engineers have long been struggling with developing voltage stability criteria for their systems. The development of the criteria becomes even more difficult if one attempts to apply the criteria to an entire region such as the one within Western Systems Coordinating Council (WSCC).
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The optimization of undervoltage load shedding strategy
2014 International Conference on Power System Technology, 2014null Ye Li +2 more
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