Battery Storage for Charging, Grid Support and Island Operation in the Port of Gothenburg

dc.contributor.authorBenjaminsson, Andreas
dc.contributor.departmentChalmers tekniska högskola / Institutionen för elektrotekniksv
dc.contributor.examinerBongiorno, Massimo
dc.contributor.supervisorBongiorno, Massimo
dc.date.accessioned2022-08-17T18:39:17Z
dc.date.available2022-08-17T18:39:17Z
dc.date.issued2022sv
dc.date.submitted2020
dc.description.abstractAbstract Environmental impacts of human actions have shown severe long–term consequences. In order to mitigate this effect, the current trend is a conversion from non–renewable sources of energy to substitutes that are more sustainable. The EU–funded project Sea Li–ion was initiated with the specific target of accelerating maritime electrification. The project investigates the idea of using Battery Energy Storage Systems (BESS) in harbour areas with the primary application of charging electric ferries.Using the onshore BESS for charging of electric ferries alone limits the possible benefits of such a configuration. BESS can be used to provide ancillary grid services to increase system stability in frequency and voltage magnitude, as well as assist during times of high loading. Furthermore, it can be used in an islanded system configuration where a section of the power system is disconnected from the synchronous grid. This becomes particularly important should the main grid be subject to major disturbance or outage. This thesis investigates how a BESS can be used to support an isolated grid. An islanded grid is modelled around the Port of Gothenburg, consisting of gas turbines from Rya combined heat and power plant, BESS and an electric ferry representing a load. The gas turbines serve as primary generation for the grid whereas the BESS impact on the grid performance is investigated. The BESS is modelled as a battery connected to a grid–forming converter as an interface to the islanded grid. A suitable control system is developed where the impact of different control parameters is investigated. The system performance without the BESS and with the BESS installed is assessed to investigate the impact of a BESS in an islanded system configuration. Results show that the BESS possesses fast dynamics and can be efficiently used with conventional generating units to improve the initial frequency response during an event on the grid. Frequency oscillations can be mitigated by configuring the BESS control accordingly. BESS provides a major benefit of having a control structure that allows specific tuning, which can be used to target requirements of the grid in question.sv
dc.identifier.coursecodeEENX30sv
dc.identifier.urihttps://hdl.handle.net/20.500.12380/305359
dc.language.isoengsv
dc.setspec.uppsokTechnology
dc.subjectSea Li–ionsv
dc.subjectBattery Energy Storage System (BESS)sv
dc.subjectSecond–life lithiumsv
dc.subjection batteriessv
dc.subjectElectric ferrysv
dc.subjectPort of Gothenburgsv
dc.subjectIsland operationsv
dc.subjectGrid–forming convertersv
dc.subjectFrequency supportsv
dc.titleBattery Storage for Charging, Grid Support and Island Operation in the Port of Gothenburgsv
dc.type.degreeExamensarbete för masterexamensv
dc.type.uppsokH
local.programmeElectric power engineering (MPEPO), MSc
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