نتایج جستجو برای: distribution system planning

تعداد نتایج: 2870347  

Journal: :international journal of architecture and urban development 0
maryam daneshvar ph.d., department of urbanism, science and research branch, islamic azad univesity, tehran, iran. ali ghafari professor, shahid beheshti university, tehran, iran. hamid majedi associate professor, department of urbanism, science and research branch, islamic azad univesity, tehran, iran.

nowadays, planning is no longer considered merely a scientific and technical career nor agovernment responsibity. it rather functions as a bridge connecting the planners to institutional changes. in otherwords, the planning theory does not develop in a social, economic and political vacuum, but is formulated byindividuals in social situations with the aim of clarifying the enviroment recommendi...

Journal: :journal of biomedical physics and engineering 0
m oshaghi master student, department of biomedical engineering, science and research branch, islamic azad university, tehran, iran m sadeghi associate, agricultural, medical & industrial research school, nuclear science and technology research institute, karaj, tehran, iran sr mahdavi assistant professor of medical physics, department of medical physics, faculty of medicine, tehran university of medical sciences, tehran, iran ar shirazi

background: accelerated partial breast irradiation via interstitial balloon brachytherapy is a fast and effective treatment method for certain early stage breast cancers however skin, chest wall and lung doses are correlated with toxicity in patients treated with breast brachytherapy. objective: to investigate the percentage of the dose received by critical organ (skin), thermoluminescence dete...

2013
Manijeh Alipour Ebrahim Babaei

Presence of distributed energy resources (DERs) in the case of proper planning can help to improve the technical and economic parameters of the system in distribution networks. In recent years, several algorithms and indices for optimal distributed generation planning with multiple objectives have been presented. In this paper, optimal placement and sizing of distributed generation sources with...

2017
Alexander Scheidler Leon Thurner Martin Braun

Network integration studies try to assess the impact of future developments, such as the increase of Renewable Energy Sources or the introduction of Smart Grid Technologies, on large-scale network areas. Goals can be to support strategic alignment in the regulatory framework or to adapt the network planning principles of Distribution System Operators. This study outlines an approach for the aut...

Amir Rahimi Hossein Nasiraghdam

Regarding the nature of non-linear discrete placement, and in order to determine the optimal capacity of the substation, the goal in the present study will be a number of local optimum points. In this research, the problem of optimal placement posts to reduce power losses by considering Distributed Generation (DG). In formulating the objective function, geographical distribution density in the ...

Journal: :international journal of environmental research 2011
s. dragicevic d. filipovic s. kostadinov r. ristic i. novkovic

the territory of serbia is vulnerable to various types of natural hazards and the risk is not equal across the entire territory; it varies depending on the type of hazard and the expected potential for damage. the first aim of this research was to determine the geographical distributions of the major types of natural hazards. seismic hazards, landslides, rock falls, floods, torrential floods...

Journal: :journal of optimization in industrial engineering 2013
abolfazl kazemi fatemeh kangi maghsoud amiri

in today's globalization, an effective integration of production and distribution plans into a unified framework is crucial for attaining competitive advantage. this paper addresses an integrated multi-product and multi-time period production/distribution planning problem for a two-echelon supply chain subject to the real-world variables and constraints. it is assumed that all transportations a...

Hatefi Kia, Masoud ,

Abstract: Distribution economic burden in power system is one of the important and essential issues in power plant production planning. This thesis presents the economic burden for generating power plants with smooth and uneven functions and considering the constraints of the power plant (steam valve, forbidden areas, with and without transmission losses) in a multi-generator power system. The ...

Journal: :مهندسی برق و الکترونیک ایران 0
f. karbalaei s. abasi a. abedinzade m. kaviani

in methods presented to calculate the voltage collapse point, the transmission system is usually the only part of the power system that is completely modeled. distribution systems are often replaced by aggregate load models because the use of the detailed model of distribution systems in voltage stability analysis not only increases the computation time, but also decreases the probability of co...

Journal: :journal of operation and automation in power engineering 2014
h. bagheri tolabi m. h. ali m. rizwan

this paper presents a new hybrid method for optimal multi-objective reconfiguration in a distribution feeder in addition to determining the optimal size and location of multiple-distributed generation (dg). the purposes of this research are mitigation of losses, improving the voltage profile and equalizing the feeder load balancing in distribution systems. to reduce the search space, the improv...

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