Synchronous Condenser Optimized Configuration Scheme for Renewable Energy Transmission Channel Considering the Curtailment Rate and MRSCR

Large-scale renewable energy in Jibei Grid is collected and sent out through the power transmission channel, and the installed capacity of renewable energy far exceeds the capacity of the channel.With the integration of large-scale renewable energy, the weak support of renewable energy power generation equipment makes the grid voltage support strength difficult to meet the needs of safe and stable operation. By configuring synchronous condensers, the voltage strength of the power grid can be effectively increased, but in power transmission channel planning and building, there is a lack of feasible synchronous condenser configuration methods. Based on the evaluation effect of multiple renewable energy stations short circuit ratio (MRSCR) on grid voltage support strength, considering the the limits of curtailment rate, this paper proposed a synchronous condenser optimized configuration scheme for renewable energy transmission channel.Combined with the calculation results of full electromagnetic simulation and electromechanical transient simulation of typical examples, it can be seen that the synchronous condenser configuration method proposed in this paper can effectively increase the grid voltage support strength and ensure the curtailment rate of the renewable energy transmission channel meeting the need of national requirement.