Overvoltages under single-phase fault conditions in the high voltage grids

摘要

The requirements for modern power systems are directly related to the need for continuous power supply to consumers while meeting the requirements for electricity quality. Planned and unplanned outages occur in the system, they directly affecting the normal operation and maintenance of the equipment in the system. This determines the need to study the processes and regime parameters in case of failures in the system. Due to the specific characteristics of the power system, model research in a software environment is preferred way for investigations for power system transients. The paper focus on parameters change in case of single-phase faults in the 220 kV electrical network depending on the place of failure and the operation of the relay protection. The investigation was performed through model study in the ATP-EMTP software environment.