Transient stability analysis on Sarawak's Grid using Power System Simulator for Engineering (PSS/E)

Transient stability analysis has become one of the major analyses in the power system to ensure the system stability to withstand a major disturbance. The effect of transient occurrence can lead to malfunction of electronic control equipment. Transient analysis can be conducted using simulation software package. One of the commercial simulation software package that used by industry worldwide is Siemens Power System Simulation for Engineering (PSS/E). This research paper highlights the usage of PSS/E to analyze Sarawak's Grid System stability using the simplest dynamic model that has been embedded into the program. To observe transient analysis using PSS/E, basic machine model such as generator, exciter and governor were used by varying default data in the program to find the best simulation output. This paper also analyzed the theory of critical clearing time (CCT) of fault occurrence between a transmission line near to the generator and far from the generator. CCT appears to be lesser when the fault occurs at a transmission line near to the generator. On the contrary, when fault occurs far from the generator, the duration of CCT is greater. The stability of the system is observed based on the machine rotor angle, machine speed, output electrical power and terminal voltage.