Transient Analysis of 220kV Distribution Substation: A Case Study

Power system has dynamic behavior as it faces various disturbances like sudden change in load, sudden change in generation and various faults. During transients parameters of power system has been changed and it is very necessary to measure and check these parameters for power system safety. There are several methods and tools to know the behavior of the system during transient. Some of are Runge-Kutta, Euler´s, Modified Euler´s methods. This paper deals with the transient analysis of 220kV Distribution substation which consists of five outgoing feeders of 132kV and one of 33kV. Simulation model have been developed in electrical transient analyzer program (ETAP) software. Transient is made on the distribution feeder and simulation is made by Runge-Kutta method. Simulation results for voltage, current and power are compared with recorded data at substation for prefault, during fault and post fault condition. Simulation and recorded parameters are found same and system remains in steady state subjected to disturbance.