Every Power System Stability question asked in GPSC DEE Electrical, Vidyut Sahayak JE — solve, check instantly, then read the formula and exam tip.
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View answer & solution
A — It describes the rotor dynamics of a synchronous machine. The swing equation relates the mechanical–electrical power imbalance to rotor-angle acceleration.
View answer & solutionPower-system stability concerns the ability of synchronous machines and network states to remain or return to acceptable operation after disturbances. Series compensation can increase transfer capability by reducing effective reactance, and parallel transmission paths can reduce transfer reactance. Key relation: Simplified transfer P≈(EV/X)sinδ; reducing effective X raises transfer capability.
Exam focus: Lower transfer reactance generally improves synchronizing power margin. Common trap: Do not confuse ordinary load flow with a dynamic stability study.
View answer & solutionPower-system stability concerns the ability of synchronous machines and network states to remain or return to acceptable operation after disturbances. Stability studies focus strongly on rotor-angle/electromechanical dynamics rather than ordinary steady-state voltage calculation alone. Key relation: Simplified transfer P≈(EV/X)sinδ; reducing effective X raises transfer capability.
Exam focus: Lower transfer reactance generally improves synchronizing power margin. Common trap: Do not confuse ordinary load flow with a dynamic stability study.
