Assessment of Synchronous Condensers Connected to Extra-High Voltage Substations during Transmission Lines Switching

Abstract

This work assesses the behavior of synchronous condensers when connected to a substation busbar in front of switching of transmission lines. This evaluation is based on the active and reactive powers as well as the field current of the electrical machine. In order to do so, a double-bus single breaker with four switch disconnectors power substation arrangement is modeled in the software EMTP-RV. This power system is tested under transmission line disconnections and the results show the response of the excitation system under this kind of situation and the way the synchronous condensers can alleviate the load flow in the remaining transmission lines it is also demonstrated.