The increase in renewable and intermittent energy resources subsequently means further demands for more stable and flexible power grids. An IGM (Individual Grid Model) uses a power grid’s characteristics and scenarios to calculate predicted power flows. The accuracy of these flows are heavily dependent on the quality of the input data. One of these inputs is production plans, that portrays where and in what magnitude a power generation module will provide power to the network. Today, not every production plan sent in to the TSO (Transmission System Operator) can be used in the calculation of the IGM, which is thought to provide less accurate power flows. The aim of the thesis is to analyse the structural information for production plans in relation to different data dimensions and to evaluate the impact on including an added amount of plans in the IGM. Specific cases relating to the dimension of granularity in the grid model managed by the TSO were further evaluated and used for the power flow analysis. By comparing an original IGM with one with the added granularity, an updated power flow analysis can be calculated and studied. Only a day-ahead and a two day-ahead IGM for one specific time and day were used in the analysis. The results from the power flow analysis show that the amount of improvement is influenced by the magnitude of the input data as well as where the added power is topologically placed. An improvement in predicted power flows for the transmission lines could be viewed for lines placed topologically closer to where most of the power generation was added. As the flow from the northern parts before the added power generation was already predicted to be a lot less than in reality, the added generation in the south led to less power flowing from the north, and evidently a decrease in accuracy. Some examples of stations portrayed an improvement of accuracy with the added production when studying the power lines connecting the stations to the remaining grid.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:uu-533698 |
| Date | January 2024 |
| Creators | Olsson, Viveka |
| Publisher | Uppsala universitet, Elektricitetslära |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | UPTEC F, 1401-5757 ; 24042 |
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