Research on Optimal Configuration of Synchronous Condenser for Transient Voltage Stability of Weak Sending-end Power System

The continuous increase in the proportion of new energy access has led to a decline in the voltage support capacity of the sending-end power grid, and transient voltage instability problem was prone to occur under the small startup mode of synchronous power sources. Taking the Northwest Power Grid as an example, the transient voltage stability problem of the typical new energy collection and transmission end power grid was revealed. Based on the advantages of the synchronous condenser, the effect of the synchronous condenser location on the transient voltage stability problem after the accident was analyzed. Furthermore, the optimal configuration method of synchronous condenser for the sending-end power grid with less voltage support has been proposed in this paper. By coordinating and optimizing the location and capacity of the synchronous condenser before the accident, and emergency control after the accident. With the goal of minimizing the control cost, and constraint of the power system safety. Finally, the effectiveness and rationality of the configuration method was validated by actual typical power grid.