Print Email Facebook Twitter Connection of large-scale wind power generation to the Dutch electrical power system and its impact on dynamic behaviour Title Connection of large-scale wind power generation to the Dutch electrical power system and its impact on dynamic behaviour Author Bos, J.A. Contributor Kling, W.L. (mentor) Hendriks, R.L. (mentor) Kamp, L.M. (mentor) Paap, G.C. (mentor) Spaan, F.J.C.M. (mentor) Faculty Electrical Engineering, Mathematics and Computer Science Date 2008-08-21 Abstract Installed wind power world wide is increasing rapidly. The increase in wind power in the European electricity grid is expected to have its impact on the system behaviour. A European study, European Wind Integration Study (EWIS), was thus set up to study the impact of wind power. This thesis was carried out in parallel with EWIS and overlaps at some points. The impact of large scale wind power integration on transient stability in the Dutch grid was studied. For the simulations the Dutch part of the UCTE interconnected system load flow model was used. Speed controls and excitation controls were added to the thermal power plants, and at the interconnections equivalent generators were placed to represent the external grids. Nine connection points were defined and all installed wind power was aggregated in wind parks at those nine connection points. The distribution of wind power amongst turbine type and location was determined to get a realistic distribution. Several simulation cases were then taken into account, first a comparison was made between the dynamic grid behaviour of the year 2008 and the year 2015, when no changes in the current regulations regarding fault-ride-through capabilities are made, i.e. all wind power will be disconnected from the grid on a voltage drop below 0.8 p.u.. Secondly a comparison of the dynamic grid behaviour of 2008 and the year 2015 was made, with no wind included in this case. As a third case, different connection requirements were applied, so the wind turbines had to stay connected to the grid in case of a fault. These `new' regulations were applied to the 2015 grid situation. From the calculations it followed that the 2015 grid without wind power installed shows a less stable behaviour than the 2008 grid. In the 2008 situation a short circuit in the centre of the grid may cause the disconnection of up to 1258 MW of wind power. For the 2015 situation this can become over 5000 MW. A disconnection of such a large amount of wind power is leading to voltage oscillations and oscillations at interconnection power flows. These oscillations however damp out fast and do not increase in amplitude. The voltage recovery time increases enormously between these years. Applying new regulations, where all variable speed wind turbines will have to stay connected to the grid during a short circuit, reduces the oscillations. As can be concluded from the calculations, a rather stable grid situation is created. This is mainly caused by the fact that the external grids are not taken into account, but modelled as an equivalent. When a larger part of the surrounding UCTE grid will be implemented the results will be different and most probably show a less stable behaviour. This thesis also looked into the large differences in wind power penetration in Europe. Several countries have a leading position in installed wind power, whilst a country like the Netherlands stays behind. Governments in Germany and Spain are very supportive and show a stable position towards renewable energy. Furthermore social acceptance is high in Germany and Spain, and both have a large local wind turbine production. These are important explaining factors for the differences in local selection environment and increase in installed wind power. Subject stabilitydynamicswind powerpower system To reference this document use: http://resolver.tudelft.nl/uuid:6fef6b25-58c2-42d4-8271-b00b5ddb00b4 Publisher TU Delft, Electrical Engineering, Mathematics and Computer Science, Electrical Power Systems Part of collection Student theses Document type master thesis Rights (c) 2008 J.A. Bos Files PDF ewi_bos.2008.pdf 8.1 MB Close viewer /islandora/object/uuid:6fef6b25-58c2-42d4-8271-b00b5ddb00b4/datastream/OBJ/view