In large-scale new energy outgoing transmission systems

many new energy power plants and collection stations are involved

and the power grid structure is highly intricate. This complexity gives rise to the situation where the multiple renewable energy stations short circuit ratio(MRSCR) fails to reach the standard requirements. Regarding the configuration of distributed synchronous condensers within new energy power plants to elevate the short-circuit ratio

two aspects are usually involved: the site selection of synchronous condensers and the capacity configuration. Based on the comprehensive compensation demand degree of node MRSCR and the predicted value of synchronous condenser configuration capacity

this paper proposes a composite index-based method to configure distributed synchronous condensers. This method considers both the site selection and capacity determination of synchronous condensers. The specific implementation plan is as follows: firstly

the MRSCR of each node in the new energy power grid and the interaction factor between nodes are calculated

and the comprehensive compensation demand degree index of the MRSCR for each new energy station is obtained; then

the node with the most significant comprehensive compensation demand degree index of the MRSCR is selected to configure the synchronous condenser and the required synchronous condenser capacity is determined. The MRSCR is recalculated after the configuration of the synchronous condenser until the target is met. Finally

a simulation model of a high proportion new energy-sending end system is established

and the improving effect of different configuration methods on the MRSCR is studied and the effectiveness of the composite index-based optimization configuration method for distributed synchronous condensers is verified.