Study on Critical Clearing Time of Mumbai Grid Based On Dynamic Simulation

Transient stability analysis is emerging as one of the most critical evaluations in the electrical power grid for assuring stability of the system and the ability to sustain major disturbances. To reduce the impact of faults in the grid and to ensure transient stability, faults must be cleared within the critical clearing time. For this purpose a rapid response of the protection system is required in order to clear the faults in the system. The dynamic simulation is carried out to examine transient stability aspects based on terminal voltage, machine rotor angle, and output electrical power, with application of different types of faults. The paper provides a case study by considering actual Mumbai grid with equivalents of neighbouring system provides glimpse into various aspects of studies to determine critical clearing time of large power grids using PSS/E software.