نتایج جستجو برای: wind systems

تعداد نتایج: 1256864  

2011
Qiang Zhai Huajun Cao Xiang Zhao Chris Yuan

Automotive manufacturing is energy-intensive. The consumed energy contributes to the generation of significant amounts of greenhouse gas (GHG) emissions by the automotive manufacturing industry. In this paper, a study is conducted on assessing the application potential of such clean energy power systems as solar PV, wind and fuel cells in reducing the GHG emissions of the global auto manufactur...

2012
Rafael B. Rodrigues Victor M. F. Mendes João P. S. Catalão

This paper is concerned with the protection of wind energy systems against the direct effects of lightning. As wind power generation undergoes rapid growth, lightning damages involving wind turbines have come to be regarded as a serious problem. Nevertheless, very few studies exist yet in Portugal regarding lightning protection of wind energy systems using numerical codes. A new case study is p...

Journal: :مدیریت آب و آبیاری 0
حبیب صیادی دانشجوی دکتری آبیاری و زهکشی، گروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه تبریز، تبریز، ایران امیر حسین ناظمی استاد، گروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه تبریز، تبریز، ایران علی اشرف صدرالدینی دانشیار، گروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه تبریز، تبریز، ایران رضا دلیرحسن نیا استادیار، گروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه تبریز، تبریز، ایران

the variety of sprinkler devices available for the center pivot and linear irrigation systems has been increased dramatically in recent years. in the current study, via conducting some indoor experiments, one type of fixed pad spray sprinkler (d3000) and two types of moving pad spray sprinklers (r3000 and s3000) with various configurations (working pressure, nozzle size and type of deflector pa...

2012
K. Gnana Sheela S. N. Deepa

This paper presents a hybrid neural network approach to predict wind speed automatically in renewable energy systems. Wind energy is one of the renewable energy systems with lowest cost of production of electricity with largest resources available. By the reason of the fluctuation and volatility in wind, the wind speed prediction provides the challenges in the stability of renewable energy syst...

Journal: :journal of artificial intelligence in electrical engineering 0
hossein nasiragdam journal of artificial intelligence in electrical engineering nariman najafian journal of artificial intelligence in electrical engineering

the growth in demand for electric power and the rapid increase in fuel costs, in whole of theworld need to discover new energy resources for electricity production. among of the nonconventionalresources, wind and solar energy, is known as the most promising deviceselectricity production in the future. in this thesis, we study follows to long-term generationscheduling of power systems in the pre...

2002
A. Feijóo C. Carrillo

the purpose of this paper is to propose methods for statistical assessment of steady-state security in electrical power systems, when influenced by wind energy. Statistical assessment is necessary because wind parks are very variable generation systems, due to characteristics of the wind.

The main goal of this paper is to study statistical indices and evaluate AGC indices in power system which has large penetration of the WTGs. Increasing penetration of wind turbine generations, needs to study more about impacts of it on power system frequency control. Frequency control is changed with unbalancing real-time system generation and load . Also wind turbine generations have more flu...

This paper studies the interest of the integration of battery energy storage with Static Synchronous Compensator (STATCOM) for improving the low voltage ride through capability (LVRT) of a fixed speed wind turbine connected to the grid. For this reason and by applying a grid fault, a comparison is made between integrating the SSSC, the STATCOM and the STATCOM with battery energy storage. The sy...

M. Kalantar, M. Sedighizadeh,

A dynamic reduced order model using integral manifold theory has been derived, which can be used to simulate the DOIG wind turbine using a double-winding representation of the generator rotor. The model is suitable for use in transient stability programs that can be used to investigate large power systems. The behavior of a wind farm and the network under various system disturbances was stu...

2007
Hannele Holttinen

Adding wind power to power systems will have beneficial impacts by reducing the emissions of electricity production and reducing the operational costs of the power system as less fuel is consumed in conventional power plants. Wind power will also have a capacity value to a power system. However, possible negative impacts will have to be assessed to make sure that they will only offset a small p...

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