Results 251 to 260 of about 286,515 (301)

Electrical Faults in Power Systems

2016
The identification and classification of electrical faults have a great importance in power system analysis. They help in the dimensioning and the adequate choice of electrical equipment, especially, for protective and interrupting devices. This chapter describes the various faults undergone by the power system and removes some ambiguities causing ...
Abdelkader Abdelmoumene, Hamid Bentarzi
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Fault analysis expert system for power system

2004 International Conference on Power System Technology, 2004. PowerCon 2004., 2005
Internet not only brings opportunities to power utilities, but also takes challenges. By virtue of internet and data warehouse, we developed support software which collected and stored data from devices in substations such as relay protect devices, dynamic process recorder and so on. Based on intelligent agent theory, knowledge discovery theory & rough
null Yu Yuehai, null Bai Yichuan, null Xi Guofu, null Xu Shiming, null Luo Jianbo   +4 more
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Fault Detection and Emergency Control in Power Systems

IFAC Proceedings Volumes, 1992
Abstract Control Centers are responsible for the supervision, monitoring and control of Power Systems. Information about the state of the Power System is continuously arriving at these centers where human operators still play the most important role in interpreting this information and taking decisions.
Z.A. Vale, A. Machado e Moura
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Power system fault diagnosis based on power grid

11th IET International Conference on Developments in Power Systems Protection (DPSP 2012), 2012
This paper proposed a new power grid fault diagnosis model combining Petri nets and grid computing. It includes the power grid computing system's structure, software service and algorithm. The model can use the high performance computing method and distributed environment of grid computing.
null Gao Zhanjun, null Gao Nuo, null Wang Lei, null Li Zhaofei   +3 more
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Instantaneous Faults Detection in Power System

2018 Twentieth International Middle East Power Systems Conference (MEPCON), 2018
Power quality covers a wide range of issues that affect utilities and consumers. Problems associated with power quality can be classified into different categories. Interruption, sag, swell, voltage and frequency variation. These are typical faults that could lead to a serious damage in a power network.
Richard Binns, Salwa Juma Al-Mamari, Mehdi Salehifar   +2 more
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Power system fault analysis

2018
Power system fault calculations are invariably undertaken using the mathematical technique termed `symmetrical components' analysis (alternatively termed `phase-sequence components' analysis). A wealth of literature exists on this subject and therefore the purpose of this text is to provide an abbreviated, concise and relevant explanation focusing on ...
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Advanced power system fault analysis method

IEEE Transactions on Power Apparatus and Systems, 1975
This paper describes the capabilities and mathematical basis of an advanced fault analysis program. This program handles simultaneous unbalanced fault analysis with detailed treatment of shunt branches, off-nominal transformers, and loading conditions as given by a base case load flow solution. Provision is made for large groups of branches with common
J.M. Undrill, T.E. Kostyniak
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Stochastic modeling of power system faults

Electric Power Systems Research, 2015
Abstract Correct modeling of power system faults is a key issue in a diversity of power system studies, such as in network planning, equipment specification and protection systems coordination. The present paper addresses the probabilistic description of faults, based on available data collected by transmission system operators for different voltage ...
André dos Santos, M.T. Correia de Barros   +1 more
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ANN based power system fault classification

TENCON 2008 - 2008 IEEE Region 10 Conference, 2008
This paper presents Wavelet based back propagation algorithm for classifying the power system faults, which is quite reliable, fast and computationally efficient. The proposed technique consists of a preprocessing unit based on discrete wavelet transform (DWT) in combination with an artificial neural network (ANN).
J. Upendar, C. P. Gupta, G. K. Singh
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Fault diagnosis for dynamic power system

Eighth International Multi-Conference on Systems, Signals & Devices, 2011
The fault diagnosis problem for dynamic power systems is treated, the nonlinear dynamic model based on a differential algebraic equations is transformed with reduced index to a simple dynamic model. Two nonlinear observers are used for generating the fault signals for comparison purposes, one of them being an extended Kalman estimator and the other a ...
A. Thabet, M. Boutayeb, G. Didier, S. Chniba, M. N Abdelkrim   +4 more
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