Vinsamlegast notið þetta auðkenni þegar þið vitnið til verksins eða tengið í það: http://hdl.handle.net/1946/25606
This thesis investigates ways to evaluate the security level of Icelandic power system with respect to the traditional system protection, wide-area control system (WACS) schemes and level of the production units in the system.
The system security assessment is to define flexible transmission limits between areas and determine maximum transfer in case of emergency. The system security level can therefore act as an reference to the system operators of Icelandic power system. In order to assess the level of security it was necessary to implement defense systems in Landsnet PSS/E model and than it was possible to simulate different conditions in the system.
Simulation results were then used to identify important factors and to define formulas which can assess in real-time production and load balance between the main system generation areas in case of islanding. In addition computational algorithms were built to calculate the level of system security in areas including systems Landsnet 66kV system areas in the south, 132 / 66kV system areas of the East and the Westfjords.
The algorithm were programmed in Landsnet WAMS system and is being used to monitor the security level of the Icelandic power system. Part of the project was to investigate if it were possible to use Landsnet SCADA simulation system for dynamic simulations. The response of the SCADA simulator was similar to PSS/E model but SCADA system refresh rate is 2 seconds. Consequently, it was not considered desirable to use the SCADA simulator in this project.
Another part of this thesis was to find the best way of splitting the system with the optimum generation-load balance. Many ideas came up but it was not enough time to simulate and analyze all of them. Instead it is a opportunity for others to continue the research in this interesting field that adaptive islanding is.