Real-time Simulation Analysis of the Impacts of New-generation Synchronous Condensers on AC/DC Parallel System

In order to meet the higher demand of dynamic reactive power support is put forward in the UHV DC power transmission project, the new-generation synchronous condensers are applied in the UHV DC/AC. In this paper, a model of the new-generation synchronous condensers in the RTDS real-time simulation system to analyze the influences of multi new-generation synchronous condensers on voltage recovery and (U) HVDC power fault recovery. The results show that the system operating with multi new-generation synchronous condensers greatly improves in the bus voltage recovery of inverter stations, decreasing the commutation failure duration under serious failure, and improves the DC power recovery. The improvement is obvious for some fault conditions such as circuit breaker rejection fault, but quite limited for commutation failure conditions at the fault moments.