Abstract: This paper proposes a static voltage stability-constrained configuration method for flexible interconnection devices in distribution networks, aiming to mitigate operational risks associated with voltage instability and enhance renewable energy accommodation capacity under high penetration of distributed generation. Firstly, a method for calculating the static voltage stability index (SVSI) is proposed based on local network equivalence. Secondly, a bi-level optimization model with dual objectives of economic efficiency and renewable energy integration is developed. The upper-level problem determines optimal location and capacity of voltage source converter (VSC), while the lower-level problem governs VSC power exchange, incorporating static voltage stability index (SVSI) as operational constraints. Finally, a non-dominated sorting genetic algorithm is used for validation. The calculation results demonstrate the rationality of the planning method, which not only satisfies the economic requirements but also helps to improve the accommodation capacity of the distribution network. At the same time, this method can reduce network losses and improve the static voltage stability of two flexible interconnected regions simultaneously.