Estimation of Uncertainty of Wind Energy Predictions
With Application to Weather Routing and Wind Power Generation
Summary
Excerpt
Table Of Contents
- Cover
- Title
- Copyright
- About the author(s)/editor(s)
- About the book
- This eBook can be cited
- Contents
- Glossary
- Acronyms
- Acknowledgements
- 1. Introduction
- 1.1. Uncertainty in wind energy predictions
- 1.2. Approaches from the literature
- 2. Uncertainty in Wind Power Generation and Weather Routing
- 2.1. Weather prediction uncertainty in wind power generation (WPG)
- 2.1.1. Offshore wind power logistics
- 2.2. Prediction uncertainty in weather routing
- 2.2.1. Wind propulsion systems (WPS)
- 2.2.2. Speed power curve
- 2.2.3. Wind resistance
- 2.2.4. Wave resistance
- 2.2.5. Ship propulsion energy
- 2.2.6. Prediction uncertainty with WPS
- 2.3. Wind power generation versus weather routing
- 2.4. Weather forecasting
- 2.4.1. Numerical weather analyses and predictions
- 2.4.2. Limitations and trends in weather forecasting
- 3. Statistical Patterns of Uncertainty in Weather Predictions
- 3.1. Prediction error metrics
- 3.2. Predictions for the North Atlantic Ocean
- 3.2.1. DWD wind and wave predictions
- 3.2.2. Regional and seasonal prediction uncertainty
- 3.3. Predictions for the North and Baltic Seas
- 3.3.1. FINO measurements
- 3.3.2. Prediction uncertainty
- 3.3.3. Wave prediction uncertainty
- 3.3.4. Wind prediction uncertainty
- 3.3.5. Conclusions
- 4. Estimation of Prediction Uncertainty
- 4.1. Theoretical and empirical models
- 4.2. Ensemble prediction systems
- 4.2.1. Multi-model and multi-analyses ensembles
- 4.2.2. Super ensembles
- 4.3. Statistical methods
- 4.3.1. Probability density estimation methods
- 4.3.2. Clustering
- 4.3.3. Prediction intervals
- 4.3.4. Quantile regression
- 5. The Quantile Regression Model
- 5.1. Linear quantile regression (QR)
- 5.2. Regressors for the QR model
- 5.2.1. Principal component analysis
- 5.2.2. North Atlantic Oscillation Index (NAOI)
- 5.2.3. Other climatological indices
- 5.2.4. Statistical moments
- 5.2.5. Local Energy Distribution Moments (LEDM)
- 5.2.6. Relation between LEDM and NAOI
- 6. Implementation
- 6.1. Database with historical weather predictions
- 6.2. A* route optimization
- 6.3. Route optimization with uncertainty
- 6.4. Quantile regression
- 7. Evaluation and Results
- 7.1. Evaluation of prediction intervals
- 7.2. Application to wind-assisted sailing propulsion
- 7.3. Prediction intervals for ship propulsion energy
- 7.4. Prediction intervals for travel time
- 7.5. Uncertainty in weather routing with WaSP
- 7.6. Prediction interval benchmarks
- 7.7. Runtime discussion
- 7.8. Annual cost savings for a multi-purpose carrier
- 8. Conclusions and Outlook
- 8.1. New approach and scientific contribution
- 8.2. Outlook
- 8.2.1. Prediction uncertainty of wind turbine power output
- 8.2.2. Uncertainty in weather routing
- 8.2.3. Further applications
- Bibliography
- List of Figures
- List of Tables
- A. Parameters of Wind Propulsion Systems
- B. Parameters of the wind and wave resistance models
- C. UML diagrams of the Java implementation
- D. The Global Sea Model (GSM)
EA actual energy (calculated with weather analyses)
EP predicted energy (calculated with weather prediction)
ET estimated propulsion energy in A* for the complete route
EP,Err prediction error for EA
FN normalized force of WPS
FWPS force of WPS
Iα prediction interval
IαR reliability of prediction intervals (coverage)
IαS skill score of prediction intervals (uncertainty & coverage)
IαU sharpness of prediction intervals (uncertainty)
IαErr error of prediction intervals
PWPS power of WPS
PWa power of waves
PWi power of wind
Pcw propulsion power of the ship in calm water
Q quantile
QRLEDM quantile regression model with LEDM regressors
T draft of ship
Vs speed of ship
α significance coefficient of prediction intervals
β weight vector for quantile regression model
ηT efficiency of transformation from motor power to propulsion power
ρα check function
k size of roi
roi region of interest (a vector with coordinates)
x vector with regressors for the quantile regression model ← ix | x →
dynamic programming mathematical technique to solve optimization problems by constructing a solution from multiple partial solutions
ensemble prediction set of numerical weather predictions (NWP) calculated with slightly different initial model conditions
genetic algorithm search heuristic which imitates processes from natural selection to find the solution to a problem
great circle circle on the earth sphere with maximum perimeter
jack-up vessel ship which has been designed for the footing and construction of offshore wind power plants
lagged ensemble consists of multiple succeeding weather forecasts which predict the same future state of weather
Details
- Pages
- XVI, 123
- Publication Year
- 2017
- ISBN (PDF)
- 9783631718957
- ISBN (ePUB)
- 9783631718964
- ISBN (MOBI)
- 9783631718971
- ISBN (Hardcover)
- 9783631718858
- DOI
- 10.3726/b11013
- Language
- English
- Publication date
- 2017 (February)
- Keywords
- Prediction Intervals Quantile Regression Numerical Weather Predictions Offshore Logistics Wind Drives Heuristical Planning
- Published
- Frankfurt am Main, Bern, Bruxelles, New York, Oxford, Warszawa, Wien, 2017. XVI, 123 pp., 38 b/w ill., 15 coloured ill., 17 b/w tables