| This thesis presents the development of simulation models of a test power system for investigating Wide Area Protection and Control (WAPaC) applications. The power system models are based on the well known 39-Bus New England test system. The basic network model is augmented with sequence data and dynamic data. Further, a modified version of the network was developed by including two HVDC schemes. A load flow model, a fundamental frequency phasor domain dynamic model (stability model) and an electromagnetic transient (EMTP-type) model were developed. The stability model and the EMTP-type model were cross validated by simulating various disturbances and comparing the variations of the important variables such as the voltage magnitudes, phase angles, and generator speeds. The two dynamic simulation models, the stability model simulated in PSS/E (or TSAT) and the EMTP-type model simulated in PSCAD/EMTDC, closely agree with each other for most of the cases simulated. However, when simulating the marginally stable situations, the two simulation models diverge. This can be attributed to the differences in the modelling approaches. The simulation models are used for developing and testing a WAPaC application that attempts to predict the transient stability of a power system after subjecting to a severe fault. Using the simulation models developed in this thesis, it was shown that the proposed transient stability prediction method works well even in the presence of multiple HVDC infeeds. It is expected that the simulation models developed will contribute to accelerate the development of other WAPaC applications. |
