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This paper introduces a new method to detect out-of-step condition in power system based on an energy equilibrium criterion in the time domain directly. The proposed criterion is obtained using the concepts of equal area criterion in power angle domain but eliminates the need for numerical computations required in the earlier algorithm. The proposed algorithm uses power-time curve for computing the...
The paper presents the application of software tools to simulate system dynamic behaviour together with the possibility to select critical contingencies of an electrical energy system. The protection system with relay functions, characteristics, settings and communication schemes will be considered. Possible visualization methods are presented which can support the operators to select critical system...
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