Weather Window Analysis in Connection With Operation and Maintenance of Ocean Renewable Energy Devices

2016 ◽  
Author(s):  
Tomoki Taniguchi ◽  
Shigesuke Ishida ◽  
Toshifumi Fujiwara ◽  
Shunji Inoue
Keyword(s):  
Renewable Energy ◽  
Wave Height ◽  
Waiting Time ◽  
Wave Condition ◽  
Persistence Probability ◽  
Window Analysis ◽  
Operation And Maintenance ◽  
Japanese Coast ◽  
Ocean Renewable Energy ◽  
Operational Probability

There is an increasing need for utilization of ocean renewable energy (ORE) around Japanese coast because Japan is surrounded by ocean. Because technologies for harnessing ORE have not been mature enough, Japanese government selects some demonstration sites for ORE devices and some demonstration projects are going. As these projects are progressed, the operation and maintenance (O&M) activities will increase and become essential factors for the success of demonstration projects. Hence, weather window analysis is required to quantify the levels of access for ORE devices in the demonstration projects, and commercial projects in the future. In this paper, two new parameters are proposed in order to evaluate accessibility to ORE devices. One is the operational probability, and the other is the forecasted waiting time. The operational probability assesses weather duration with considering variability of wave condition. The forecasted waiting time is an expectation value of waiting time before O&M planners get next chance to arrange the O&M activities. In order to check the effectivity of the proposed 2 parameters, accessibility is evaluated for significant wave height in terms of the 2 proposed parameters, these are • Operational probability • Forecasted waiting time and 3 conventional parameters, these are • Excess probability • Persistence probability • Waiting time between windows The accessibility is evaluated at two locations along the Japanese coast. This study reveals that large differences are caused between persistence probability and operational probability when operational wave height limit occurs intermittently and required window length is long. The forecasted waiting time has the same variation tendency as the waiting time between windows.

A Feasibility Study on Hybrid Use of Ocean Renewable Energy Resources Around Japan

2013 ◽  
Author(s):  
Tomoki Taniguchi ◽  
Shigesuke Ishida ◽  
Yoshimasa Minami
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Wind Energy ◽  
Energy Resource ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Japanese Coast ◽  
Ocean Renewable Energy ◽  
Resource Needs ◽  
Sea Area

This paper addressed assessing feasibility of hybrid use of ocean renewable energy, such as wave and wind energy around Japanese coast. At first, wave and wind energy theoretical potentials were calculated and, in the second step, correlation coefficient between wave and wind energy was computed around Japanese coast. Sea area suitable for hybrid use of ocean renewable energy resources is supposed to have high potential for some types of energy resources. Furthermore, correlation of power generation between wave and wind energy resources should be low because one energy resource needs to complement another one for stabilizing power generation. Based on the assumptions, feasibility of wind and wave energy was evaluated on some sea areas where R&D project are ongoing.

Motion Characteristics of Composite-Type Sea Cage under Pure Wave

2012 ◽  
Vol 490-495 ◽  
pp. 3405-3409
Author(s):  
Chun Liu Li ◽  
Yun Peng Zhao
Keyword(s):  
Experimental Data ◽  
Wave Height ◽  
Vertical Motion ◽  
Data Acquisition System ◽  
Horizontal Motion ◽  
Wave Condition ◽  
Composite Type ◽  
Motion Range ◽  
Motion Characteristics ◽  
Sea Cage

To study motion range changes with wave condition and motion relationship between cages, physical model experiments were carried out. The authors designed 2 models of composite-type sea cages. Experimental data obtained by the CCD data acquisition system. The experiment results showed that 1.in the same period, horizontal motion range,vertical motion range and inclination changes of float collar increase with wave height; 2.In the same wave height, horizontal motion range of the float collar increases with period; 3.The laws between vertical motion and period are not obvious 4.The laws between inclination changes and period are not obvious 5.Motion range of the first cage along the direction of waves is less than other cages.

scholarly journals Wave transformation around breakwater (case study: tourism harbour, Eastern Bali, Indonesia)

2021 ◽  
Vol 894 (1) ◽  
pp. 012028
Author(s):  
M N Arsyad ◽  
O Setyandito ◽  
L M Kesuma ◽  
H D Armono ◽  
M Anda ◽  
...  
Keyword(s):  
Wave Height ◽  
Wave Transformation ◽  
Wave Condition ◽  
The Past ◽  
Design Wave Height ◽  
Coastal Modeling ◽  
Before And After ◽  
Modeling Software

Abstract An essential aspect in the sustainable design of breakwater is the determination of the design wave condition. It is predicted by utilizing severe wave conditions of the past 10 to 20 years. The tourism harbor at eastern Bali, Indonesia, is located where extreme wave condition occurs. Therefore, this research studies the wave height before and after constructing a breakwater in the harbor area. The wave height was simulated using numerical modeling. The methodology was performed by using the coastal modeling software of the SMS-CGWAVE model. The result shows the highest design wave height value of 3.9 m in the direction from the southeast. The design breakwater can reduce wave height up to 0.9 m or a 75.5% reduction. Further study is needed to simulate the extension of breakwater length to meet the criterion design of wave height in the harbor basin.

scholarly journals Suitable Locations of Ocean Renewable Energy (ORE) in Indonesia Region – GIS Approached

2015 ◽  
Vol 65 ◽  
pp. 230-238 ◽  
Author(s):  
Noir P. Purba ◽  
Jaya Kelvin ◽  
Rona Sandro ◽  
Syahrir Gibran ◽  
Resti A.I. Permata ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Ocean Renewable Energy

Coordinators Overview and Lessons Learned From the Galway Bay Seatrials of the FP7 EU Funded CORES Wave Energy Project

2013 ◽  
Author(s):  
Raymond Alcorn ◽  
Anthony Lewis ◽  
Mark Healy
Keyword(s):  
Renewable Energy ◽  
Wave Energy ◽  
Energy Systems ◽  
Project Manager ◽  
Lessons Learned ◽  
Ocean Energy ◽  
Renewable Energy Systems ◽  
Energy Devices ◽  
Ocean Renewable Energy ◽  
The Coordinator

The paper discusses the lessons learned from the European Funded Framework 7 Research project Components for Ocean Renewable Energy Systems (CORES) which developed and trialed new components and systems for ocean energy devices. The authors are the coordinator and project manager so the paper will give this overview of the project. This will include detail of the work packages, major achievements, significant impacts, summary results and outcomes of the sea trials.

scholarly journals New Building Cladding System Using Independent Tilted BIPV Panels with Battery Storage Capability

2019 ◽  
Vol 11 (20) ◽  
pp. 5546 ◽  
Author(s):  
Amy A. Kim ◽  
Dorothy A. Reed ◽  
Youngjun Choe ◽  
Shuoqi Wang ◽  
Carolina Recart
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Building Energy ◽  
Battery System ◽  
Operation And Maintenance ◽  
Building Integrated Photovoltaic ◽  
Cladding Panels ◽  
Improved Design ◽  
Storage Batteries ◽  
Near Future

In order to meet renewable energy goals in the near future, the deployment of photovoltaic (PV) panels on buildings will dramatically increase. The objective of this paper is to introduce an improved design for PV cladding systems that will greatly contribute to meeting these renewable energy goals. Typically, building-integrated photovoltaic (BIPV) panels are vertically oriented as cladding and they are not coupled with individual storage batteries. The proposed cladding couples a tilted BIPV panel with one or more storage batteries at each building placement. Thus, the tilted BIPV plus battery system is independent of other power generation in the building and it is referred to as a “building perma-power link” (BPPL) cladding element. Each cladding panel is designed as a stand-alone system, which will be useful for installation, operation, and maintenance. The hyper-redundancy of multiple BPPL cladding panels for a typical building significantly enhances its overall energy resiliency. In order to foster manufacturing ease, each individual cladding unit has been designed at tilts of 45° and 60°. An example of a mid-rise building in Seattle, Washington is provided. The degree of building energy resiliency provided through multiple BPPLs is examined.

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