This paper proposes a new inter area angle stability prediction algorithm. This algorithm does not require any prior knowledge of system state as it operates directly from measurements drawn from SPMUs. The proposed predictor foresees the system stability state before elapsing the first swing i.e. assessing system stability in advance. Applying the Synchronized Phasor Measurement Units (SPMUs) for the power systems, inter-area stability can be predicted in a proper time.
Since the need for real-time Out-Of-Stability (OOS) algorithms becomes a very important issue in the modern power system networks. So that, the objective of this paper is producing an algorithm for Fast Stability Detection (FSD) before elapsing the first swing period.
For the above objective a comprehensive analysis for 3-phase fault at sending end of single machine infinite bus system with various fault periods are performed. The analysis will be performed using Enhancements for the Equal Area Criterion (EAC) in time domain via the created FSD algorithm.
So that, It will be described here various cases via producing the generator electric power in time domain (Pe versus time) and rotor angle domain (Pe versus δ) for the sake of comprehensive analysis and algorithm validity.