نتایج جستجو برای: simulation approach reliability analysis

تعداد نتایج: 4204696  

2005
Jong-Gi Lee Yong-Jun Kwon Young-Hyun Moon RimTaig Lee

Abstract: This paper presents a new approach to perform time simulation of power system transient stability using implicit quadratic integral method. Fast and reliable simulation of the transient stability is required to achieve high reliability based on the online stability assessment. The trapezoidal method has been mainly adopted for this purpose. However, the proposed method shows the possi...

2015
Dian-Qing Li I Te Xiao Li-Min Zhang

Random finite element method (RFEM) provides a rigorous tool to incorporate spatial variability of soil properties into reliability analysis and risk assessment of slope stability. However, it suffers from a common criticism of requiring extensive computational efforts and a lack of efficiency, particularly at small probability levels (e.g., slope failure probability Pf<0.001). To address this ...

1998
Swapna S. Gokhale Michael R. Lyu Kishor S. Trivedi

Effective and accurate reliability modeling requires the collection of comprehensive, homogeneous, and consistent data sets. Failure data required for software reliability modeling is difficult to collect, and even the available data tends to be noisy, distorted and unpredictable. Also, the complexity of the real world data might obscure the properties of the reliability models which are based ...

Journal: :the modares journal of electrical engineering 2009
hossein haroonabadi mahmoodreza haghifam

deregulation policy has caused some changes in the concepts of power systems reliability assessment and enhancement. in this paper, generation reliability is considered, and a method for its assessment using intelligent systems is proposed. also, because of power market and generators’ forced outages stochastic behavior, monte carlo simulation is used for reliability evaluation. generation reli...

Journal: :journal of operation and automation in power engineering 2007
k. afshar a. shokri gazafroudi

wind power generation is variable and uncertain. in the power systems with high penetration of wind power, determination of equivalent operating reserve is the main concern of systems operator. in this paper, a model is proposed to determine operating reserves in simultaneous market clearing of energy and reserve by stochastic programming based on scenarios generated via monte carlo simulation ...

Journal: :CoRR 2012
Lingzhong Meng

This paper describes a multi-agent based availability prediction approach for the reconfigurable networked software system based on the complex system’s model and simulation. Firstly, the definition of the features and availability of reconfigurable networked software system is introduced. Secondly, on the basis of the multi-agent based networked software system modeling method, an availability...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - پژوهشکده ادبیات 1391

the major purpose of this study was to develop the translation teacher competency test (ttct) and examine its construct and predictive validity. the present study was conducted in two phases: a qualitative phase as well as a quantitative phase. in the first phase of the study, the author attempted to find out the major areas of competency required for an academic translation teacher. the second...

2005
Yongsheng Lian Nam-Ho Kim

A multiobjective, reliability-based design optimization method for computationally intensive problems is proposed. In this method we use a genetic algorithm to facilitate the multiobjective optimization. To further improve the convergence of the genetic algorithm, we augment it with a local search. Reliability analysis is performed using Monte Carlo simulation. Quadratic design response surface...

1999
Alice E. Smith

The exact calculation of all-terminal network reliability is an NP-hard problem, with computational effort growing exponentially with the number of nodes and links in the network. Because of the impracticality of calculating allterminal network reliability for networks of moderate to large size, Monte Carlo simulation methods to estimate network reliability and upper and lower bounds to bound r...

1999
Deepa Kundur Dimitrios Hatzinakos

In this paper, we concentrate on the problem of robust watermarking in the presence of perceptual coding. We first present a watermarking approach called Robust Reference Watermarking (RRW) which can be incorporated into a broad class of watermarking algorithms to improve their performance. Through analysis of this scheme we demonstrate how embedding the watermark using a different perceptual m...

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