Analysis of IEEE Power System Stabilizer Models

In 2005 IEEE (The Institute of Electrical and Electronic Engineers) introduced a new standard model for Power System Stabilizers, the PSS4B. This is an advanced multi-band stabilizer that may give a better performance than the regular PSSs often used today. The new stabilizer has three parallel control blocks, each aiming at damping different oscillatory modes or different frequency bands of the low frequency oscillations in the power system. So far the PSS4B is not very known in the market, but in the future it will probably become a standard requirement for key power plants in the power system. This master thesis is a continuation of a project performed in the autumn 2010, where the power system model and the framework for analysis were established. The power system will during this master thesis be upgraded to contain an additional smaller generator and also two different multiple-input stabilizer models, the PSS2B and the PSS4B. These stabilizer models will be implemented and tuned for the small hydro generator in the network. Comparisons between the different network configurations will be performed where the focus will be at the inter-area and local oscillation modes. This master thesis will seek to find an answer on following questions: • How should the PSS4B be tuned to give the best damping of the local and inter-area