نتایج جستجو برای: system optimization

تعداد نتایج: 2465940  

Journal: :the modares journal of electrical engineering 2015
mahdi sojoodi farzad soleymani

in this paper, we describe our implementation of an interior point algorithm for large scale systems. first we identify system with small and medium methods convex optimization, then we use interior point method for identification. finally we offer an interior point method that uses nonlinear cost function and see that we achieve a good trade-off between error and cpu time. actually, in this pa...

Journal: :journal of artificial intelligence in electrical engineering 2013
oveis abedinia ali ghasemi noradin ghadimi

plug-in hybrid electric vehicles (phev) technology shows great interest in the recent scientificliteratures. vehicle-to-grid (v2g) is a interconnection of energy storage of phevs and grid. byimplementation of v2g dependencies of the power system on small expensive conventional units canbe reduced, resulting in reduced operational cost. this paper represents an intelligent unitcommitment (uc) wi...

Journal: :international journal of smart electrical engineering 2012
ehsan sadeghian ramtin sadeghi

optimal capacitor placement, considering power system loss reduction, voltage profile improvement, line reactive power decrease and power factor correction, is of particular importance in power system planning and control. the distribution system operator calculates the optimal place, number and capacity of capacitors based on two major purposes: active power loss reduction and return on invest...

In this paper, the features of Ant Colony Optimization Algorithm (ACOA) are used to find optimal size for sewer network. Two different formulations are proposed. In the first formulation, pipes diameters and in the second formulation, nodal elevations of sewer network are taken as decision variables of the problem. In order to evaluate the performance of different ACOAs, four algorithms of Ant ...

Fazeli Nejad, Saied, Moazzami, Majied, Shahgholian, Ghazanfar,

To improve the stability of the power system, the design of a PSS and STATCOM controller parameters using ABC is presented as an optimization problem in this paper. The ABC is a collective intelligence based on the optimization algorithm and inspired by the bee feeding behavior in finding food. Fast convergence and high accuracy are the capabilities of this algorithm. The effectiveness and robu...

پایان نامه :دانشگاه تربیت معلم - سبزوار - دانشکده مهندسی برق و کامپیوتر 1391

خیص و انتخاب الگوهای مهم موجود در بانک های اطلاعاتی یکی از مسائل مهم در علوم مبتنی بر سیستم های هوشمند مصنوعی، یادگیری ماشینی و داده کاوی می باشد. تشخیص به موقع بیماری دیابت آسیب های این بیماری را در جامعه کاهش می دهد. از مهم ترین مشکلات روش های تشخیص این بیماری در مراحل ابتدایی در نظر گرفتن ویژگی های مناسب به منظور تشخیص و در نتیجه ضعف در شناسایی بیماران است. مشکل دیگری که وجود دارد، تعیین صحی...

Ali Khatami Firoozabadi, Fattah Mikaeili , Maghsoud Amiri, Mohammadreza Sadeghi,

The main goal in this paper is to propose an optimization model for determining the structure of a series-parallel system. Regarding the previous studies in series-parallel systems, the main contribution of this study is to expand the redundancy allocation parallel to systems that have repairable components. The considered optimization model has two objectives: maximizing the system mean time t...

Kheirkhah, Amirsaman , Zolfaghari, Hassan ,

  In this paper, a discrete event simulation model of Iranian railway system is used for analyzing performance of the system in freight sector. The model analysis shows more sensitivity of the system on loading and unloading facilities than on number of wagons and locomotives. System optimization through simulation optimization technique, shows that more than 4% of all wagons available in the n...

ژورنال: Journal of Railway Research 2019
Aghazadeh, Amir, Askarian Abyaneh, Hossein, Niazazari, Iman,

In this paper a new method is proposed for determining PID controller parameters in order to decrease losses in levitation system of magnetic trains. It is assumed that this system is a hybrid system and it consists of electric and permanent magnet. For optimization of losses initially AC losses of magnetic levitation system are calculated. Linear model of levitation system as well as modeling ...

Journal: :international journal of civil engineering 0
a. kaveh iust b. mirzaei iust a. jafarvand iust

in this paper, the problem of simultaneous shape and size optimization of single-layer barrel vault frames which contains both of discrete and continuous variables is addressed. in this method, the improved magnetic charged system search (imcss) is utilized as the optimization algorithm and the open application programming interface (oapi) plays the role of interfacing analysis software with th...

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