Design, Construction, and Installation of Off-Shore Wind Turbine With Tripod Suction Bucket Foundation

2017 ◽  
Author(s):  
M. Ryu ◽  
J. Lee ◽  
D. Kwag ◽  
S. Bang
Keyword(s):  
Wind Turbine ◽  
Water Depth ◽  
Surface Soil ◽  
Development Project ◽  
Power Development ◽  
Bucket Foundation ◽  
Surface Foundation ◽  
The Government ◽  
Wind Power Development ◽  
Design Construction

As part of the national off-shore wind power development project by the government of Korea, the very first off-shore wind turbine utilizing tri-pod suction buckets for its sub-surface foundation has been successfully completed. This off-shore wind turbine with a capacity of 3MW has been designed, constructed, and installed in late 2016. It is located approximately 200 meters offshore with a water depth of approximately 10 meters. Sub-surface soil consists of interbedded clay and sand layers. Details of the design, construction, and installation of this wind turbine with tripod suction bucket foundation system are described and discussed.

Applied Policymaking

2015 ◽  
Author(s):  
Scott Valentine
Keyword(s):  
Information Asymmetry ◽  
Wind Power ◽  
Nuclear Power ◽  
Power Development ◽  
Energy Technologies ◽  
Pros And Cons ◽  
The Government ◽  
Influential Variable ◽  
High Degree ◽  
Wind Power Development

Chapter 10 summarized nine social factors, seven technological factors, seven economic factors, and nine political factors that have influenced the fortunes of wind power development in the six case study nations covered in this book. The premise underpinning the previous chapter is that successful wind power development policy depends on strategic management of forces of change within four contextual areas depicted in Figure 11.1. There are three basic tenets underpinning this model. First, the environment in which wind power policy is formulated and implemented can be better understood by comprehensive analysis of conditions within four contextual areas: the sociocultural context, the economic context, the technological context, and the political context. Within each of these four areas there are dominant forces (variables) that have proven to be influential in hindering or helping wind power development. The trouble is that for each nation, the relative importance of each influential variable differs because energy policy in each nation is influenced by a unique conflation of sociocultural, technological, economic, and political conditions. For example, a high degree of information asymmetry is evident in both Japan and China. Citizens of both nations lack adequate information about the pros and cons of energy technologies to make informed decisions. In Japan, information asymmetry helps explain why there is so little support for wind power and why the government has been able to continue its advocacy of nuclear power. In China citizens are also kept largely in the dark about energy sector developments, but this is not a problem for wind power development because the government is committed to supporting wind power whether the public consents or not. In short, information asymmetry is a barrier to wind power development in Japan, but in China, it is not. Second, the analysis of STEP forces is complicated because variables within each of these four contextual areas interact in unpredictable ways due to the complexity of variable interrelations. Cause-and-effect links are extensive which means that numerous positive and negative feedbacks catalyze chaotic systemic evolution. For example Canada possesses a wealth of hydropower capacity that suggests a high degree of grid resilience.

Understanding Wind Power Systems

2015 ◽  
Author(s):  
Scott Valentine
Keyword(s):  
Power Systems ◽  
Wind Turbine ◽  
Wind Power ◽  
Vertical Axis ◽  
Horizontal Axis ◽  
Power Development ◽  
Electricity Grid ◽  
Wind Power Systems ◽  
Main Components ◽  
Wind Power Development

All of the above statements represent prominent objections to wind power development. For the most part, these statements are premised upon small truths that have been exaggerated by wind power opponents in order to generate public opposition. The intent of this chapter is to try and separate fact from fiction in order to give the reader a better technical understanding of the true hurdles faced by nations that embark on ambitious wind power development programs. Although a technical understanding of wind power systems is not necessary to understand the case studies presented in this book, enhanced technical understanding will help the reader better understand the possibilities and limitations of the technology. This chapter begins by describing the basic components of a wind power system before exploring how technical choices made in regard to system components and site location influence generation costs. From this technical foundation, the discussion will shift to the stochastic (fluctuating) nature of wind power and examine existing solutions for smoothing power fluctuations. This will provide the reader with a better understanding of the potential of wind power systems to replace fossil fuel electricity generation technologies. In concluding sections of this chapter, an attempt will be made to separate truth from fiction in regard to community and environmental impacts commonly attributed to wind power systems. Hopefully, by the end of this chapter, the pros and cons associated with wind power development will be better understood. There are basically two main wind turbine designs—vertical axis and horizontal axis. Vertical axis wind turbines (VAWT), which can resemble egg beaters placed on towers, are not widely used for electricity generation, so this section will focus on the main components of horizontal axis wind turbines (HAWT). The main components of a wind turbine includes the rotor blade; the nacelle (which houses the gearbox, generator, and yaw motor); the tower upon which the wind turbine is placed; the foundation which anchors the tower to the ground; the control system and transformer (usually located at the base of the tower), which transforms the collected energy into electric current that can be delivered to the electricity grid; and the electrical conduits that connect the wind turbine to the electricity grid.

Wind Power in Germany

2015 ◽  
Author(s):  
Scott Valentine
Keyword(s):  
Wind Power ◽  
Development Strategy ◽  
Alternative Energy ◽  
Nuclear Power ◽  
Power Development ◽  
Dynamic Interactions ◽  
Key Factor ◽  
The Government ◽  
Wind Power Development ◽  
Power Diffusion

In the previous chapter, the malleability of Danish energy policy was highlighted as a key factor behind the successful diffusion of wind power in Denmark. This chapter examines wind power diffusion in Germany, and in the process highlights a different, though equally successful policy ideology. Compared to policy of its Nordic neighbor, wind power development policy in Germany has been far more structured and invariable. In fact, the success of Germany’s wind power development strategy often serves as an exemplar for proponents of consistent feed-in tariff regimes, which is considered by some to be the most effective strategy for driving wind power development. As this chapter will demonstrate, fostering wind power development in Germany is, like in other nations, a complex challenge involving dynamic interactions between government and nongovernment actors. As German wind power capacity expanded, there has been social dissent and utility opposition. Nevertheless, the German government has remained committed to aggressive wind power diffusion policies and has responded to emergent challenges in a remarkably unified manner wherein state, regional, and local government actors have formed integrated problem-solving networks. This chapter also highlights the seamless web of nation-specific STEP factors influencing wind power development that is apparent in Germany. As one pair of researchers observed, wind power development in Germany has been marked by “close interplay between the actors within the political system, technical and economic development, as well as social factors.” As has been the case in most industrialized nations, forces in support of wind power development began to amass during the two energy crises of the 1970s. As the government began to evaluate its alternative energy technology options, nuclear power and wind power emerged as the two most viable utility-scale options. In the 1970s, nuclear power in Germany enjoyed a modicum of developmental success. The nation’s first commercial nuclear power plant commenced operation in 1969. By 2010, nuclear power contributed approximately 22% to Germany’s electricity supply. However, nuclear power development has been contentious. Although there has been industrial support, there has also been strident public opposition, especially since Chernobyl.

Wind Power Development in Power Grid and Study on Dispatching Strategy

2014 ◽  
Vol 672-674 ◽  
pp. 310-315
Author(s):  
Yi Zhang ◽  
Feng Zhang ◽  
Lv Tang
Keyword(s):  
Wind Turbine ◽  
Wind Power ◽  
Power Grid ◽  
Actual Situation ◽  
Power Development ◽  
Constant Frequency ◽  
Wind Power Integration ◽  
Integration Management ◽  
Wind Power Development ◽  
Operation Characteristics

Firstly, This paper summarizes the development situation of wind power in China, and analyzes the operation characteristics of all types of generating units one by one according to constant speed constant frequency asynchronous wind turbine, double-fed asynchronous wind turbine and direct-driven permanent magnet synchronous wind turbine. Then various effects of wind power integration on power grid are analyzed based on the actual situation of power grid. Finally, according to these effects, various measures of strengthening wind power integration management are proposed from management and technology levels. These measures are generally instructive and applicable to the same types of power grid with wind power.

One damping estimation approach of the parked offshore wind turbine supported by wide-shallow bucket foundation

2021 ◽  
Vol 235 ◽  
pp. 109387
Author(s):  
Jijian Lian ◽  
Junni Jiang ◽  
Xiaofeng Dong ◽  
Haijun Wang ◽  
Huan Zhou
Keyword(s):  
Wind Turbine ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Bucket Foundation ◽  
Damping Estimation
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