Annual Report 2009 - webfiles its vmware

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different fault conditions. Both internal faults should be handled as well as the ridethroughcapability. Further, the characteristics for the wind farm from the grid pointof view will be lined out. Lena successfully defended her PhD thesis on December8, 2009.Electric power delivery systemThe electric power delivery system faces several challenges: need ofreinforcement in the power grid, integration between countries, intermittent powerproduction, large and small scale production, and active customers having moreinformation and sometimes being both consumer and producer. Solutions tothese changes lay in: new standards and regulations, techniques to control thepower, e.g. phase measurement units (PMUs), FACTS (Flexible AC TransmissionSystems), HVDC VSC (Voltage Source Converters), support from Information andCommunication Technology (ICT), and Digital Signal Processing (DSP), materialsfor efficient high voltage insulation and technology for energy storage using e.g.electric cars. The idea of Smart Grid connotes the application of such solutions forthe development of a sustainable electric power delivery system. The Division hasresearch activities within different sections of these areas presented in more detailbelow, and several new activities are planned to start in 2010 e.g. within theChalmers Energy Initiative.Post-doc projectsUse of Power Electronic Controllers for Power Systems StabilityImprovementsParticipant: Massimo BongiornoSponsor: ElektraThe aim of this project is to investigate the application of shunt-connectedconverters (also called STATCOM, both with and without energy storage) to theelectric power system. In particular, the final goal is to investigate the impact ofactive and reactive power compensation on the stability of the power system, aswell as on its steady-state performance. Aspects such as ideal placement, controlsettings (speed of response and droop settings) and the need for active energyinput will be investigated. Furthermore, the possibility to use “highly distributedFACTS units” already existing in the power system (for example, wind farms) willbe considered.Future Electric Power System – Smart GridParticipants: Tuan Le, Lina BertlingSponsor: E.ONThe electric power system is changing to meet future demands on the energyinfrastructure. This development is getting generally known as Smart Grid. It30 |
implies larger flexibility to manage changes, more integrated systems with lessand smarter components, increased optimization and higher availability and lowertransmission losses. One of the main changes comes from the large increase inintermittent power production from wind power in the near future, and in a longerperspective in sun and wave power. This project will investigate the strategies totransform the existing power system into a Smart Grid system. The project willlook specifically at the development of control and market strategies for thetransmission and distribution systems and identify the enabling technologies tooptimize the grid. A new post-doc position is being formulated within this project.The project is part of the E.ON Chalmers collaboration involving several projectswithin the overall topic of Future Energy System.PhD student projectsPlug-in electric vehicles and the energy supply system in GothenburgParticipants: David Steen, Ola Carlson, Per Fahlén (at the Division of BuildingServices Engineering), Lina BertlingSponsor: Göteborg Energi AB.The transport sector faces a major shift towards more energy-efficient vehicles.Already there are several electric hybrid vehicles on the market, powered by bothan internal combustion engine and an electric motor. Several of the major vehiclemanufacturers will within the next few years launch a new type of hybrid vehicle,known as plug-in hybrid electric vehicle (PHEV), which can be charged from theelectrical grid. The purpose of this research project is to investigate how theenergy system in Gothenburg is affected by an increasing number of plug-inelectric vehicles (PEVs), i.e. PHEVs and electric vehicles (EVs), as the use ofenergy in buildings is changed.In a first stage the electric grid in Gothenburg is examined to estimate how well itcan handle changes in the energy consumption, such as an increased amount ofPEVs or heat pumps etc. and thereafter the market will be investigated to estimatethe rate at which PEVs will increase, a distribution map will be produced to showthe expected geographical distribution of the vehicles around Gothenburg. Thusthe importance of different policy instruments and changes in infrastructure will beincluded. This information will be used to examine whether and in which sectionsGöteborg Energi needs to strengthen and expand its electrical grid. By examininghow the heat demand looks, how it is expected to change in the future and howheat is produced, future investments in the electrical grid can be optimized in abetter way than if only the plug-in vehicles are taken into account. Moreover, theimpact on the electric grid, caused by the plug-in vehicles, is to be studied. Bycontrolling the charging of the vehicles to times when the load of the grid is small,an increased peak power is minimized. Variations between the powerrequirements for electricity and heat over time will be compared to find synergiesor solutions to possible problems.31 |
Page 1 and 2: Annual Report 2009Division of Elect
Page 3 and 4: Program Outline and VisionElectric
Page 5 and 6: PhD student projects ..............
Page 7 and 8: • A PhD student course was held i
Page 9 and 10: Saeid HaghbinAndreas KarvonenPhD st
Page 11 and 12: In the Power Systems Laboratory,the
Page 13 and 14: Undergraduate and ContinuingEducati
Page 15 and 16: ELKRAFTRÅDET is a board of industr
Page 17 and 18: presentation of their results. This
Page 19 and 20: The course gives a deep understandi
Page 21 and 22: The course starts with fundamental
Page 23 and 24: PhD theses• Lena Max presented he
Page 25 and 26: Wind power and network integrationW
Page 27 and 28: • Validation of the generic wind
Page 29: Both steady-state high-frequency co
Page 33 and 34: voltage stability of the transmissi
Page 35 and 36: The PhD students use electric machi
Page 37 and 38: The project is a cooperation with C
Page 39 and 40: of research results. These platform
Page 41 and 42: Publications and ReportsListed belo
Page 43 and 44: Conversion, Vol. 24, No. 3, Septemb
Page 45 and 46: Conferences and VisitsThis section
Page 47 and 48: • Seminar on smart grid, and (joi
Page 49 and 50: • Lina Bertling joined the IVA St
Page 51 and 52: • Tuan Le gave a presentation on
Page 53 and 54: Other ActivitiesThis section shows
Page 55 and 56: • Torbjörn Thiringer was censor
Page 57 and 58: 57 |

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