Abstract

The increase in size and complexity of power system networks with a large number of interconnections has exposed the system to various contingencies, which lead to system instability. Therefore, it is necessary for a power system to remain in a state of operating equilibrium under normal operating conditions and to regain an acceptable state of equilibrium after being subjected to a disturbance such as sudden load changes and transmission system faults. The degree of the system stability is an important factor in the planning of new facilities and their interconnection. The proposed method presents the transient stability analysis of a power system using ETAP software. A three phase fault is located at a specified bus and as a result of this the critical clearing time on the system stability is studied.

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