Wind Power Research Papers - Academia.edu (original) (raw)

The increasing wind power generation requires the updating of the computational tools that support decision making in the operation and planning of electric power systems. This work describes a methodology to model the spatial... more

The increasing wind power generation requires the updating of the computational tools that support decision making in the operation and planning of electric power systems. This work describes a methodology to model the spatial correlations among wind speeds probability distributions in probabilistic power flow. The proposed methodology is based on Nataf transformation and Monte Carlo Simulation. The proposed methodology is illustrated in case studies with the IEEE 24 bus test system, highlighting the importance of adequately considering such correlations.

Accurate wind and severe-weather forecasts are crucial for wind-energy production and grid-load management. Most of the prevailing wind power forecast methods rely heavily on statistical approaches that typically do not deal directly with... more

Accurate wind and severe-weather forecasts are crucial for wind-energy production and grid-load management. Most of the prevailing wind power forecast methods rely heavily on statistical approaches that typically do not deal directly with weather processes. Currently employed numerical weather prediction (NWP) models are deemed insufficiently accurate by many industry stakeholders for wind power prediction, even though they have been used for such applications. The reason is partly because the NWP products used for power forecasting are typically produced by the coarse-resolution models at the major operational weather centers. Although a few of high-resolution models are run by some wind energy industries, most of these model do not contain advanced data assimilation capabilities that are required to initialize the model prediction with the important high-resolution weather information.

One critical task in any wind power interconnection study involves the modelling of wind turbines. This paper provides the most basic yet comprehensive time–domain wind turbine model upon which more sophisticated models along with their... more

One critical task in any wind power interconnection study involves the modelling of wind turbines. This paper provides the most basic yet comprehensive time–domain wind turbine model upon which more sophisticated models along with their power and speed control ...

The societal challenges of the 21st century are profound and wide ranging. Basic needs such as food, housing, mobility, health, and energy will become even more acute as the world population exceeds nine billion. The demand for... more

The societal challenges of the 21st century are profound and wide ranging. Basic needs such
as food, housing, mobility, health, and energy will become even more acute as the world
population exceeds nine billion. The demand for sustainable development will require
redefined engineering cutting-edge skills and ever reaching hands-on experience to navigate
these needs to a standard level. The power sector is on the cusp of a technology breakthrough
with a number of promising developments coming on string. A concerted drive to solve
challenges of the energy trilenma: energy access, affordability and sustainability coupled with
rapid technological change that spored tech firms. Constant power supply is the hallmark and
the bedrock of any developed economy. Today, 60% to 70% of the Nigerian population have
no access to electricity. One hundred million Nigerians representing 60% of its population,
have no access to grid electricity and those who do, experience extremely unreliable supply.
This present power crisis will persist unless the government diversifies the energy resources
in domestic, commercial and industrial sectors and adopts new available technologies to
reduce energy wastage and to save cost. The need for diversified sources of power supply has
naturally become a germane issue with the nation now planning to opt out of monocultural
profiles. Recent innovations are already booming the power sector, enabling the emergence
of “the prosumer,” energy consumer who produces their own electricity taken for example
the tech such as solar photovoltaic (PV) , energy storage and smart metres. The use of
biomass as an innovation in clean energy and power has proven itself efficient.
Simultaneously, providing a way to produce electricity and reduce health hazards. The
establishment of mini-hydro stations is a pathway to enhance access to electricity for
Nigeria’s increasing population. In all, aiding the society and improving engineering
education.

India is moving towards a trend of generating electricity from renewable resources, with a maturity of advanced technologies and urgent requirement for maintaining a healthy environment with reasonable price. Nevertheless, meeting growing... more

India is moving towards a trend of generating electricity from renewable resources, with a maturity of advanced technologies and urgent requirement for maintaining a healthy environment with reasonable price. Nevertheless, meeting growing energy needs through conventional sources such as coal, gas, etc. creates environmental problems. Hence, the government gets on exploring new and clean energy sources. Development and promotion of these new and renewable energy sources such as the wind, solar and biomass have acquired considerable attention in India, although coal and natural gas are still major sources of electricity. The use of various sustainable, renewable energy technologies has been rising, as it develops rapidly and can be scaled up easily. Wind energy is a clean and eco-friendly energy source and increasingly accepted as a major complementary energy source for securing a sustainable and clean energy future in India. The Indian government has aimed to fully utilize the abundant resources of this energy, which India has. The official assessment shows this country has potential to generate over 100,000 MW of wind energy. Till March 2017, generation capacity of 32,352 MW has been created through the wind, which places India in the fifth place globally. This paper provides a detailed description of Indian wind energy and discusses several developments which accelerated its growth. Empirical data were collected by Ministry of New and Renewable Energy and Indian Institute of Wind Energy. The paper presents current status, major achievements and future of wind energy in India.

Abstract—The determination of additional operating reserves in power systems with high wind penetration is attracting a significant amount of attention and research. Wind integration analysis over the past several years has shown that the... more

Abstract—The determination of additional operating reserves in power systems with high wind penetration is attracting a significant amount of attention and research. Wind integration analysis over the past several years has shown that the level of operating ...

In order to manage the remarkable share of wind power as present in several utilities forecast information is needed. In the last years several respective procedures have been developed and put into operation. Up to now the outcome of the... more

In order to manage the remarkable share of wind power as present in several utilities forecast information is needed. In the last years several respective procedures have been developed and put into operation. Up to now the outcome of the forecast tools is mainly restricted to the forecasted value itself and general information of the overall error of the procedure

This paper gives an overview of the opportunities that exist for the combination of stochastic power generation and hydrogen production, storage and end-use. It is described how hydrogen storage can be applied in both isolated and... more

This paper gives an overview of the opportunities that exist for the combination of stochastic power generation and hydrogen production, storage and end-use. It is described how hydrogen storage can be applied in both isolated and grid-connected systems, and how the produced hydrogen can be utilized for stationary energy supply and as a fuel for transportation. The paper discusses the benefits and limitations of the different hydrogen storage applications, and emphasizes the need for stochastic studies both for long-term planning and operation planning. A simulation case study of using excess wind power in a weak grid to produce hydrogen for vehicles has been presented. It is shown that the penetration of wind power can be significantly increased by introducing electrolytic hydrogen production as a controllable load

This thesis investigates the technical problems associated with large-scale stand-alone wind powered desalination employing a short-term energy store, particularly the complexities associated with the intermittent operation of the... more

This thesis investigates the technical problems associated with large-scale stand-alone wind powered desalination employing a short-term energy store, particularly the complexities associated with the intermittent operation of the desalination plant. To achieve this, a non-linear, time domain system model of an existing wind powered desalination plant has been developed using the propriety code Simulink. Two desalination techniques have been considered: reverse osmosis and electrodialysis, due firstly to their relatively low specific energy consumption, and secondly, their efficient coupling to a wind turbine generator. As a way of reducing power mismatch, optimising water production, and above all reducing the switching rates of the desalination units, operation of the reverse osmosis and electrodialysis units under variable power conditions is suggested. Little information is available on plant performance under such conditions. A mathematical model has therefore been developed to...

The present work deals with a renewable energy based microgrid (MG) with ANFIS controller for standalone operation. The places where renewable energy sources such as wind, solar, hydro etc. are in abundance, use them to generate... more

The present work deals with a renewable energy based microgrid (MG) with ANFIS controller for standalone operation. The places where renewable energy sources such as wind, solar, hydro etc. are in abundance, use them to generate electricity by developing wind-hydro based MG. The main control unit of MG is VSI (Voltage Source Inverter) in which an indirect current control is applied. This VSI is used for power quality improvements through harmonics suppression of nonlinear loads; voltage regulation during contingencies such as load unbalance; reactive power compensation at PCC (Point of Common Coupling) according to the system requirement. It is capable of providing power balance under various changes among the generation, storage and demand units. For appropriate functioning of VSI, a reweighted zero attractor least mean square (RZALMS) control algorithm is applied to generate PWM switching pulses for VSI. A model of MG with ANFIS controller is developed in MATLAB/ Simulink environment to simulate its performance in normal and dynamic conditions at linear and nonlinear loads. A renewable wind-hydro based microgrid has been developed. The performance of MG has been demonstrated using RZALMS control approach to provide power quality solutions i.e. harmonics suppression, reactive power compensation, load balancing and voltage control. It has also managed the power balance in the microgrid during various states such as high wind power generation, load unbalancing and peak load demand. Such MG provides energy independence in rural areas and contributes in reducing the fossil consumption and its bad impact on the environment. A single voltage source inverter has performed power quality improvement and power balancing. The PMBLDCG does not require speed sensor, position sensor and wind speed sensor for MPPT control. Individual inverters and converters are not being used on various units viz. wind, hydro, battery bank etc. Therefore, the overall system cost and maintenance is reduced. The performance of the proposed controller with ANFIS and PI controller results were evaluated by using Matlab/Simulink software.

Bangladesh has a projected electricity demand of 10283 MW by the end of the year 2015. Despite having huge coastline and relatively large area only 100 MW of that huge demand is projected to come from wind power sources. Bulk of this... more

Bangladesh has a projected electricity demand of 10283 MW by the end of the year 2015. Despite having huge coastline and relatively large area only 100 MW of that huge demand is projected to come from wind power sources. Bulk of this generation is planned to be deployed in the coastal area and adjacent islands. But there are other places of interest for wind power generation, which could be a good means for solving the huge power crisis in Bangladesh. In this paper, feasibility of different scale of wind power generation in 35 different places is studied in the perspective of Wind Power Density (WPD) and Plant Capacity Factor (PCF) at different turbine heights. Only 5 of those sites attain power class 2 or more at 50m height and 17 of them are projected to achieve a PCF of 20% or greater for micro scale generation. At 120m height only 5 sites are projected to attain a much larger WPD and achieve a power class of 2 or more and remaining 30 places still belong to power class 1. Feasib...

Abstract Renewable energy is a reliable and practical option for generating electricity and is considered one of the key ways to reduce environmental impact. There have been concentrated efforts devoted to next-generation technology to... more

Abstract Renewable energy is a reliable and practical option for generating electricity and is considered one of the key ways to reduce environmental impact. There have been concentrated efforts devoted to next-generation technology to enhance performance, reliability and future growth of wind energy. However, there is always been concern about wide and bulky horizontal axes of wind turbines. Recent developments in wind turbine technology, particularly in the case of vertical axis wind turbines have shown that they are more adaptable to utility-scale power plants. As the energy generates from wind flow in both directions, we used this concept to model a novel hybrid wind turbine to demonstrate energy harvesting viability in a controlled way entirely from the moving vehicles on highways, with a three-bladed wind turbine and a solar tracking system. The hybrid wind turbine provided more energy and better efficiency in comparison to traditional wind turbines on the highways.

Rüzgar türbinleri elektrik şebekesine bağlı durumdayken şebekede oluşacak gerilim çukurlarından ve arıza durumlarından etkilenmeleri söz konusudur. Rüzgar türbinlerinin sahip olması gereken önemli özelliklerden birisi de şebeke arızaları... more

Rüzgar türbinleri elektrik şebekesine bağlı durumdayken şebekede oluşacak gerilim çukurlarından ve arıza durumlarından etkilenmeleri söz konusudur. Rüzgar türbinlerinin sahip olması gereken önemli özelliklerden birisi de şebeke arızaları durumunda şebekeye bağlı kalabilmesi ve arıza durumunun ortadan kalkıp normal işletme koşullarına dönünceye kadar şebekeyi destekleyebilmesidir. Ülkelerin sahip oldukları farklı şebeke yönetmelikleri dolayısıyla şebekeye bağlı kalınması gereken süreler ve koşullar değişiklik gösterebilmektedir. Bu çalışmada, Tip-3 rüzgar türbinlerinin gerilim çukuru (gerilim düşüşü ve bu seviyede kalınması) süresince kanat, şaft ve generatör torkunda meydana gelen değişimler ele alınmış ve farklı koşullarda ortaya çıkan sonuçlar kıyaslanmıştır. Ayrıca, acil durdurma senaryosunda da benzer şekilde ortaya çıkan tork değişimleri incelenmiştir. Çalışmada, PLECS simülasyon ortamında oluşturulmuş 2MW gücündeki Tip-3 rüzgar türbini model kullanılmıştır. Farklı gerilim çukuru, farklı güç değerleri ve farklı hata tiplerinde simülasyon çalışmaları gerçekleştirilerek değişkenlerin sonuçlara olan etkileri gösterilmiştir.

This paper develops an integrated framework to evaluate land suitability for wind farm siting that combines multi-criteria analysis (MCA) with geographical information systems (GIS); an application of the proposed framework for the island... more

This paper develops an integrated framework to evaluate land suitability for wind farm siting that combines multi-criteria analysis (MCA) with geographical information systems (GIS); an application of the proposed framework for the island of Lesvos, Greece, is further illustrated. A set of environmental, economic, social, and technical constraints, based on recent Greek legislation, identifies the potential sites for wind power installation. Furthermore, the area under consideration is evaluated by a variety of criteria, such as wind power potential, land cover type, electricity demand, visual impact, land value, and distance from the electricity grid. The pair-wise comparison method in the context of the analytic hierarchy process (AHP) is applied to estimate the criteria weights in order to establish their relative importance in site evaluation. The overall suitability of the study region for wind farm siting is appraised through the weighted summation rule. Results showed that only a very small percentage of the total area of Lesvos could be suitable for wind farm installation, although favourable wind potential exists in many more areas of the island.

A new computational model for the aerodynamics of vertical-axis wind turbines is introduced. It is based on the double-multiple streamtube concept and it incorporates the capacity of dealing with rotors whose blades follow... more

A new computational model for the aerodynamics of vertical-axis wind turbines is introduced. It is based on the double-multiple streamtube concept and it incorporates the capacity of dealing with rotors whose blades follow oval-trajectories at variable setting-angles. We applied this model to the study of the aerodynamics of an innovative concept in extra-large wind-power plants: the VGOT (variable-geometry oval-trajectory) Darrieus wind turbine. Due to the especial geometric characteristics of the VGOT Darrieus, it was necessary to propose three new non-dimensional parameters to quantify its performance under different wind-conditions: the equivalent power coefficient, the equivalent solidity coefficient and the trajectory efficiency. We show some numerical results testing several rotor configurations working under different wind scenarios.