Dynamic analysis of the impact of grid connection of "La Higuera" hydropower plant to the transmission grid
Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Studies regarding the development of a new hydropower plant exploiting the water resources offered by the upper Tinguiririca river, located about 150 km south-east of the capital Santiago in Chile, has been done by Pacific Hydro Ltd from Australia and Lahmeyer International from Germany. These studies have resulted in proposals to construct two Hydropower Stations, �La Higuera� and �Confluencia�. Both hydropower stations will have a total installed capacity of 300 MW.
When setting up a new hydropower plant, it is important to foresee how the hydropower plant would affect the existing transmission grid in different situations during operation as well as how events in the grid may affect the La Higuera and/or Confluencia hydropower stations. In this report three kind of analysis are highlighted, which are static analysis, large signal stability and rotor angle stability. To perform these analyses a simulation tool named DigSilent is used. DigSilent is used to perform these analyses in a simulated network of the studied transmission system.
These two hydropower stations as shown in the results will improve the existing transmission system by enhancing the stability margins in the presence of a fault. When performing the simulation of the existing transmission system with the newly installed hydropower plant we could see that it had a poor damping after a disturbance; this might be due to the large distance between production plants and the existing loads. This phenomenon can be alleviated if a power system stabilizer (PSS) is integrated in the hydropower plant.
The final conclusion is that the integration of the two hydropower plants will improve the existing transmission system in Chile.
Place, publisher, year, edition, pages
2006. , 55 p.
EES Examensarbete / Master Thesis
Electric Power System, Load flow, Voltage Stability, Hydropower, DigSilent
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-118929OAI: oai:DiVA.org:kth-118929DiVA: diva2:609101
Master of Science - Electric Power Engineering
Ghandhari, Mehrdad, Professor