نتایج جستجو برای: power system security

تعداد نتایج: 2696271  

Journal: :Journal of Physics: Conference Series 2021

Journal: :International Journal of Control and Automation 2019

Journal: :Energy and AI 2021

Power systems transport an increasing amount of electricity, and in the future, involve more distributed renewables dynamic interactions equipment. The system response to disturbances must be secure predictable avoid power blackouts. can simulated time domain. However, this security assessment (DSA) is not computationally tractable real-time. Particularly promising train decision trees (DTs) fr...

Journal: :روش های عددی در مهندسی (استقلال) 0
مهرداد ستایش نظر m. setayesh nazar محسن پارسا مقدم m. parsa moghaddam حسین جاویدی و محمودرضاحقی فام h. javidi and m. r. haghifam

this paper describes a new method for the evaluation of non-utility generation impacts on preventive-corrective control of power systems. the proposed method relies on a mixed integer nonlinear optimization and is capable of recognizing the effectiveness of demand side preventive-corrective actions. a number of cases are presented to illustrate the consequences of introducing demand side action...

The safe operation of power system depends on its stability and security supply in all times. The dynamic instability (small signal instability) is one of phenomena that results in power system instability and has been discussed as a challenge in power system control and operation from a long time ago. Commonly the dynamic instability appears as undamped low frequency electromechanical oscillat...

2010
Todd Baumeister

The current U.S. electrical power grid is an out-of-date infrastructure, and the Smart Grid is an upgrade that will add many new functionalities to meet customers’ new power requirements. Updating a system as complex as the electrical power grid has the potential of introducing new security vulnerabilities into the system. This document presents a review of the work related to Smart Grid cyber ...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده مهندسی شیمی 1389

on this project we try to calculated power of hydrogen on dycarbonil compound in different ways ; the first way is shoster way , for sain power of hydrogen notice the different power between central conforms on it and main conform that’s didn’t have hydrogen joint . or in other way different of energy between open and close form. second way, is average way? this is for way that studied conf...

2003
S. H. Goh Z. Y. Dong T. K. Saha

Till now, many transfer capability techniques are performed in a simplified manner, with limited consideration of security constraints. This is unacceptable as the risks for not evaluating security impacts are high. There have been doubts on whether current techniques could provide secure transfer capability assessment and thus introducing a new challenge. This paper presents an optimal power f...

1999
Craig A. Jensen Mohamed A. El-Sharkawi Robert J. Marks

This paper presents a new method for enhancing the accuracy of partially trained multilayer perceptron neural networks in specific operating regions. The technique is an extension of previously published query learning algorithms and uses an evolutionary-based boundary marking algorithm to evenly spread points on a contour of interest in this case the power system security boundary. These point...

Journal: :IJICS 2009
David M. Nicol Charles M. Davis Thomas J. Overbye

This paper describes a project that integrates real devices used in the electric power grid with a simulation of electrical power generation and distribution, and a computer/communication simulator. The testbed is designed to evaluate the cyber-security of power grid control systems. Through a combination of simulation and emulation, the testbed seamlessly integrates virtual and real components...

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