No full-text available
To read the full-text of this research,
you can request a copy directly from the authors.
Implementation of offshore wind farm & The challenges related to it
Abstract
Wind is the fastest growing renewable energy source. The vast majority of wind power is generated from onshore wind farms. Their growth is however limited by the lack of inexpensive land near major population centers and the visual pollution caused by large wind turbines. Wind energy generated from offshore wind farms is the next frontier. In this paper we suggested offshore wind farm as a reliable source of future energy with several method of implementation and a few difficulties rising with it. This paper shows the possibility of offshore wind farm to be a prime source of energy in future world.
... Mazumder et al. [5] have described the prospects of wind power in Chittagong and calculated the requirements of wind turbine as well the performances of them. Ambia et al. [6] have derived a process for selecting right location amongst 8 of them forecasting the performances of them. Nibir et al. [7] have attempted to find the right micro scale wind turbine. ...
... METHODOLOGY Wind speed data 35 different location for years 2002-2011 is taken into consideration for the study. The available wind speed data is taken at standard meteorological height of 10m [7], which is converted to 50m data by standard conversion process [6] and is analysed monthly, yearly and overall. From this wind speed data wind power density [8] is calculated at different parts to categorize them into different power classes [9]. ...
... where P m is Mechanical output power of the turbine (W), C p is Performance coefficient of the turbine, ρ is Air density (kgm -3 ), A is Turbine swept area (m 2 ), V wind is Wind speed (ms -1 ), λ is Tip speed ratio of the rotor blade tip speed to wind speed, β is Blade pitch angle (deg). Equation 6 can be normalized as equation 7 in per unit measurements [15]: ...
A good chunk of population of Bangladesh are not blessed with electricity, are living in medieval conditions, use charcoal and wood as the sources of energy, and of course, fire hydrocarbons for lighting their houses. For sustainable development, this huge population should be brought under the coverage of electricity, which is very difficult for country like Bangladesh as natural resources are scarce and budget is inadequate. But with proper planning, widespread rollout of renewable sources could change the scenario and provide a facelift to the insipid pastoral Bangladesh. As solar panels are costly, wind power could be the mantra for the future. Despite of the huge potential, very limited works have been done on assessment and development of biogas technology. This paper has attempted to assess the performances of hypothetical wind farms at different heights at different locations of Bangladesh in terms of plant capacity factor (PCF).
Due to unimpressive prospect of fuel cell, geothermal, tidal and wave resources, wind energy is a major renewable energy source in Bangladesh along with solar and biomass energy. Bangladesh has a projected electricity demand of 10283 MW by the end of the year 2015, only 100 MW of that huge demand is projected to come from wind power sources, most of which is planned to be deployed in the coastal area and islands. But there are other places of interest for wind power generation, which could be good means for solving the huge power crisis. In this paper, feasibility of different scale of wind power generation at 35 different places is studied in perspective of Wind Power Density (WPD) at different turbine heights. All 35 sites attain power class 1 at 50m height, whereas 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. From WPD and mapped turbine's rotor diameter from wind power class it is found that, large scale wind turbine at Chittagong and Jessore, medium scale at Khepupara, and small scale at Cox's Bazar and Hatiya is feasible.
Design and successful operation of wind energy conversion systems (WECs) is a very complex task and requires the skills of many interdisciplinary skills, e.g., civil, mechanical, electrical and electronics, geography, aerospace, environmental etc. Performance of WECs depends upon subsystems like wind turbine (aerodynamic), gears (mechanical), generator (electrical); whereas the availability of wind resources are governed by the climatic conditions of the region concerned for which wind survey is extremely important to exploit wind energy. This paper presents a number of issues related to the power generation from WECs e.g. factors affecting wind power, their classification, choice of generators, main design considerations in wind turbine design, problems related with grid connections, wind-diesel autonomous hybrid power systems, reactive power control of wind system, environmental aspects of power generation, economics of wind power generation, and latest trend of wind power generation from off shore sites.
We have been the first to investigate whether long-lived geese and ducks can detect and avoid a large offshore wind farm by tracking their diurnal migration patterns with radar. We found that the percentage of flocks entering the wind farm area decreased significantly (by a factor 4.5) from pre-construction to initial operation. At night, migrating flocks were more prone to enter the wind farm but counteracted the higher risk of collision in the dark by increasing their distance from individual turbines and flying in the corridors between turbines. Overall, less than 1% of the ducks and geese migrated close enough to the turbines to be at any risk of collision.
Wind is the fastest growing renewable energy source, increasing at an annual rate of 25% with a worldwide installed capacity of 74 GW in 2007.The vast majority of wind power is generated from onshore wind farms. Their growth is however limited by the lack of inexpensive land near major population centers and the visual pollution caused by large wind turbines.
This paper describes the concept of a multi-terminal high-voltage dc transmission scheme to integrate off- shore wind farms into an interconnector link between two power systems. This infrastructure could lead to interesting cost savings, since the same cable system provides both grid connection and a facility for en- ergy trade. In this work, a simplified model of the voltage-sourced converter is described and used for simulation of the dynamic behavior of such a sys- tem, with special emphasis on dc-side power balanc- ing and voltage control. The paper explains how off- shore wind power, including its variability, could be directed to either of the two power systems by dc- voltage control.
The Concept Of Self-Maintained offshore wind turbines
- E Echavarria
- T Tomiyama
E. Echavarria, T. Tomiyama, G.J.W. van Bussel, " The Concept Of Self-Maintained offshore wind turbines, " Online Proceedings: EWEC 2007 European Wind Energy Conference, Milan, Italy, May 7th -10th, 2007.