Assessing Offshore Wind System Integration: Comparative Analysis of Floating Photovoltaics, Oscillating Surge Wave Converters, and Battery Energy Storage Systems
(2023) MVKM01 20231Department of Energy Sciences
- Abstract
- The high penetration of wind power is increasing the intermittency and power variability into the existing power grid. This is forcing industries to look for optimal configurations in order to improve their systems performance and minimize these effects from the power production method. Studies show that there are different ways of reducing the power variability and therefore stabilize the energy supply. Hybrid offshore energy systems based on the combination of two or more marine renewable energy sources can reduce the variability and costs associated with the installation and operation of the systems. Battery energy storage systems combined with wind power could also smoothen the fluctuation of the power supply and improve the... (More)
- The high penetration of wind power is increasing the intermittency and power variability into the existing power grid. This is forcing industries to look for optimal configurations in order to improve their systems performance and minimize these effects from the power production method. Studies show that there are different ways of reducing the power variability and therefore stabilize the energy supply. Hybrid offshore energy systems based on the combination of two or more marine renewable energy sources can reduce the variability and costs associated with the installation and operation of the systems. Battery energy storage systems combined with wind power could also smoothen the fluctuation of the power supply and improve the utilization and overall energy efficiency.
This master thesis was performed on behalf of RWE Renewables AB in Malmö, and conducted at the Department of Energy Sciences at Lund University, Faculty of Engineering. The purpose of this thesis was to examine the possibilities of system integration with one of RWE Renewables planned offshore wind farms, the Neptuni project. Extra focus was put on studying system integration of three different technologies, their power generation for the specific site, their economic feasibility and the potential reduction of power fluctuations with the hybrid systems respectively. The potential benefits and challenges of the three technologies were first studied in a literature review. Thereafter, a case study was executed to perform simulations and calculations of the technologies power generation and measure their and the respective hybrid systems potential revenues and mitigation of power fluctuations. Four different electricity spot price scenarios for the future are conducted enabling the calculation of the Net Present Value of each technology for each scenario.
The findings indicate that one scenario of floating Photovoltaics (FPV) yields a positive Net Present Value over its lifetime, while the other scenarios yields a negative value, as well as the Oscillating Surge Wave Converter (OSWC) and Li-Ion Battery Energy Storage System (BESS), are not currently profitable investments. However, economic viability should not be the sole determinant for investment decisions, as these technologies offer valuable contributions such as experience and innovation. Additionally, integrating FPV and OSWC with an offshore wind farm results in reduced variability. Also, increased correlation with the system load with higher installed capacity, enhancing grid stability, is confirmed for all technologies examined.
While the analyzed technologies may not be immediately viable for investment, their potential for future development, long-term cost stability, and enhanced energy security make investments in renewable energy strategic for the future. Starting with modest installed capacities and considering the broader benefits of renewable energy are advisable when making investment decisions. (Less) - Popular Abstract (Swedish)
- Detta examensarbete ämnar att undersöka integration av tre olika teknologier till en havsbaserad vindkraftspark, om det är ekonomiskt gynnsamt samt hur kraftfluktuationerna till elnätet påverkas. Genom att kombinera olika förnybara kraftsystem kan man minska variabiliteten och kostnaderna kopplade till installation och drift av systemen. Även fast investeringar i annan förnybar energi utöver vindkraft inte är ekonomiskt gynnsamma, finns det skäl för att investera ändå. Det har visat sig av detta arbete att en kombination av havsbaserad vindkraft och flytande solkraft kan minska kraftfluktuationerna till elnätet i jämförelse med kraftproduktionen från endast vindkraftsparken. En kombination av vindkraft och vågkraft leder också till... (More)
- Detta examensarbete ämnar att undersöka integration av tre olika teknologier till en havsbaserad vindkraftspark, om det är ekonomiskt gynnsamt samt hur kraftfluktuationerna till elnätet påverkas. Genom att kombinera olika förnybara kraftsystem kan man minska variabiliteten och kostnaderna kopplade till installation och drift av systemen. Även fast investeringar i annan förnybar energi utöver vindkraft inte är ekonomiskt gynnsamma, finns det skäl för att investera ändå. Det har visat sig av detta arbete att en kombination av havsbaserad vindkraft och flytande solkraft kan minska kraftfluktuationerna till elnätet i jämförelse med kraftproduktionen från endast vindkraftsparken. En kombination av vindkraft och vågkraft leder också till minskade kraftflutktuationer, men till en mycket lägre grad på grund av den höga korrelationen mellan vind och vågor. Den undersökta hybridanläggningen där ett batterilagringssystem är integrerat med en havsbaserad vindkraftspark kommer däremot inte nödvändigtvis minska kraftfluktuationerna till elnätet. \\
Den ökande användningen av förnybar energi i det befintliga svenska elnätet är på många sätt lovande. Havsbaserad vindkraft är emellertid en intermittent energikälla, vilket innebär att den vindenergi som utvinns av vindturbinerna varierar på kort tid och inte kan kontrolleras. Detta leder till en fluktuerande elförsörjning, vilket kan vara problematiskt. Utrustning som är ansluten till elnätet kan ta skada om stora kraftfluktuationer inträffar. Därför tvingas vindkraftsindustrin till att söka efter optimala konfigurationer för att förbättra deras systems prestanda och minimera dessa effekter. Detta arbete kan komma till användning genom att bidra till kunskapen om systemintegration av förnybar energi och hjälpa företag med beslutsfattningen för att stabilisera elförsörjningen från deras förnybara energikällor på ett kostnadseffektivt och hållbart sätt. Dessutom kan resultaten användas för att vägleda investeringsbeslut och främja utvecklingen av förnybar energi i framtiden. \\
För att kunna utföra en ekonomisk analys har prognoser av olika framtida elprisscenarion krävts för att beräkna ifall en investering kommer generera vinst eller förlust över teknologins livstid. Resultaten visar att endast ett scenario med flytande solceller genererar vinst över sin livstid, medan de andra scenarierna samt vågkraft och batterilagringssystemet inte är lönsamma investeringar för tillfället. Däremot tyder litteraturstudien på att de undersökta teknologierna för tillfället får stora utvecklingsstöd för att främja användandet av dessa. Detta kommer leda till nya innovationer och utveckling av teknologierna inom den närmsta framtiden, vilket visar på stor potential och en plats i framtidens förnybara kraftsystem. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9125587
- author
- Niilekselä, Wilhelm LU and Hansson, Douglas LU
- supervisor
- organization
- course
- MVKM01 20231
- year
- 2023
- type
- H2 - Master's Degree (Two Years)
- subject
- report number
- LUTMDN/TMHP-23/5534-SE
- ISSN
- 0282-1990
- language
- English
- id
- 9125587
- date added to LUP
- 2023-06-16 13:18:20
- date last changed
- 2023-06-16 13:18:20
@misc{9125587,
abstract = {{The high penetration of wind power is increasing the intermittency and power variability into the existing power grid. This is forcing industries to look for optimal configurations in order to improve their systems performance and minimize these effects from the power production method. Studies show that there are different ways of reducing the power variability and therefore stabilize the energy supply. Hybrid offshore energy systems based on the combination of two or more marine renewable energy sources can reduce the variability and costs associated with the installation and operation of the systems. Battery energy storage systems combined with wind power could also smoothen the fluctuation of the power supply and improve the utilization and overall energy efficiency.
This master thesis was performed on behalf of RWE Renewables AB in Malmö, and conducted at the Department of Energy Sciences at Lund University, Faculty of Engineering. The purpose of this thesis was to examine the possibilities of system integration with one of RWE Renewables planned offshore wind farms, the Neptuni project. Extra focus was put on studying system integration of three different technologies, their power generation for the specific site, their economic feasibility and the potential reduction of power fluctuations with the hybrid systems respectively. The potential benefits and challenges of the three technologies were first studied in a literature review. Thereafter, a case study was executed to perform simulations and calculations of the technologies power generation and measure their and the respective hybrid systems potential revenues and mitigation of power fluctuations. Four different electricity spot price scenarios for the future are conducted enabling the calculation of the Net Present Value of each technology for each scenario.
The findings indicate that one scenario of floating Photovoltaics (FPV) yields a positive Net Present Value over its lifetime, while the other scenarios yields a negative value, as well as the Oscillating Surge Wave Converter (OSWC) and Li-Ion Battery Energy Storage System (BESS), are not currently profitable investments. However, economic viability should not be the sole determinant for investment decisions, as these technologies offer valuable contributions such as experience and innovation. Additionally, integrating FPV and OSWC with an offshore wind farm results in reduced variability. Also, increased correlation with the system load with higher installed capacity, enhancing grid stability, is confirmed for all technologies examined.
While the analyzed technologies may not be immediately viable for investment, their potential for future development, long-term cost stability, and enhanced energy security make investments in renewable energy strategic for the future. Starting with modest installed capacities and considering the broader benefits of renewable energy are advisable when making investment decisions.}},
author = {{Niilekselä, Wilhelm and Hansson, Douglas}},
issn = {{0282-1990}},
language = {{eng}},
note = {{Student Paper}},
title = {{Assessing Offshore Wind System Integration: Comparative Analysis of Floating Photovoltaics, Oscillating Surge Wave Converters, and Battery Energy Storage Systems}},
year = {{2023}},
}