نتایج جستجو برای: wind power generation

تعداد نتایج: 871810  

2010
Julija Matevosyan

Historically, transmission systems are built together with power production installations in order to meet the expected electricity consumption. For economic reasons, they are usually not overdimensioned and therefore cannot guarantee power transmission capacity for new power plants for 100% of the year. Wind power plants have to be installed in the immediate proximity of the resource – wind. T...

2017
Yan Li Ming Zhou Dawei Wang Yuehui Huang Zifen Han

Due to the volatile and correlated nature of wind speed, a high share of wind power penetration poses challenges to power system production simulation. Existing power system probabilistic production simulation approaches are in short of considering the time-varying characteristics of wind power and load, as well as the correlation between wind speeds at the same time, which brings about some pr...

2016
Germán Morales-España Ross Baldick Javier García-González Andres Ramos

This paper proposes a power-based networkconstrained unit commitment (UC) model as an alternative to the traditional deterministic UCs to deal with wind generation uncertainty. The formulation draws a clear distinction between power-capacity and ramp-capability reserves to deal with wind production uncertainty. These power and ramp requirements can be obtained from wind forecast information. Th...

2009
Wei Zhou Chengzhi Lou Zhongshi Li Lin Lu Hongxing Yang

Solar and wind energy systems are omnipresent, freely available, environmental friendly, and they are considered as promising power generating sources due to their availability and topological advantages for local power generations. Hybrid solar–wind energy systems, uses two renewable energy sources, allow improving the system efficiency and power reliability and reduce the energy storage requi...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Lee M Miller Nathaniel A Brunsell David B Mechem Fabian Gans Andrew J Monaghan Robert Vautard David W Keith Axel Kleidon

Wind turbines remove kinetic energy from the atmospheric flow, which reduces wind speeds and limits generation rates of large wind farms. These interactions can be approximated using a vertical kinetic energy (VKE) flux method, which predicts that the maximum power generation potential is 26% of the instantaneous downward transport of kinetic energy using the preturbine climatology. We compare ...

2016
Subhadeep Bhattacharjee Shantanu Acharya

The solar and wind power generation is stochastic in nature. Consequently, it is difficult to obtain steady power output from these renewable sources. Storage element (mainly battery) used in typical solar/wind hybrid system has also its inherent shortcomings. However, power generation from renewable energy sources like solar and wind is having paramount significance in the context of impending...

2017
Deockho Kim João P. S. Catalão

Due to the intermittency of wind power generation, it is very hard to manage its system operation and planning. In order to incorporate higher wind power penetrations into power systems that maintain secure and economic power system operation, an accurate and efficient estimation of wind power outputs is needed. In this paper, we propose the stochastic prediction of wind generating resources us...

Growth of wind distributed generation (DG) in the active distribution grids can impact on the operation and planning aspects of network. Therefore, this paper presents a probabilistic load flow problem to evaluate the impacts of wind unit uncertainties on the distribution systems. Proposed method is based on the cumulants technique that is a straightforward approach. This analytical method can ...

2014
Wen-Chih Yang

This paper presents the simulation technique for simulating a micro grid (MG) and the analysis results of the operating characteristics of a MG with a hybrid power source. The hybrid power source in this research included both a diesel engine generation set and a wind generation system. The simulation tool adopted by this research is the professional software, Simulink. The simulation results a...

2013
Wei Tian Ahmet Ozbay Wei Yuan Partha Sarakar Hui Hu

An experimental study was conducted to investigate the performance of wind turbines sited over hilly terrains in order to elucidate the underlying physics to explore/optimize design of wind turbines sitting over complex terrains for higher power yield and better durability. The experiments were conducted in an atmospheric boundary layer wind tunnel with wind turbines sited over a two-dimensiona...

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