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UBC Theses and Dissertations

Local assessment of transient stability for generator tripping Mihirig, Ali Mohamed


The local variables of a synchronous generator are investigated as possible indicators of the transient stability of the generator. A number of case studies are carried out on three test systems to find out which generator variable or variables can be used. By comparing the conventional swing curve of each generator with its local acceleration curve during the same transient period, a new criterion for transient stability assessment is developed to replace existing generator tripping schemes that rely upon pre-determined contingency studies. The new criterion is based upon the behavior of the acceleration of the generator following a disturbance to the system. No measurements from any other machine in the system are required to assess the stability of the generator.

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