Abstract
The existing algorithms to calculate Dynamic Security Region (DSR) have been well developed, but the heavy calculation and large time-consuming hinder their applications. Based on Extend Equal Area Criterion (EEAC), this paper proposes a rapid method to calculate hyper-plane of DSR. Under a given fault, the critical clearing time can be calculated rapidly by using EEAC, then the corresponding critical operating point can be obtained. When enough critical operating points in different search directions are acquired, the hyper-plane of DSR can be obtained by least squares fitting method. Simulation on IEEE 4-11 system shows that the suggested method is fast, reasonable, and practical.
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