Multi-Domain Optimal Scheduling of Wind Power Systems Based on Voltage Stability Constraints

In order to cope with the operational instability and scheduling complexity brought by wind power access to the grid, this paper aims at multi-domain optimal dispatching of wind power systems based on voltage stability constraints. The wind power system is divided into different grid operation domains, and the system is divided into normal domains, abnormal domains, and emergency domains according to the regulation capacity of conventional units and their changing trends. The optimal scheduling model considering voltage stability constraints in different operation regions is established. Through the simulation calculation of a typical example of IEEE-30 node, it is verified that the optimized scheduling method can improve the economy, security and wind power capacity of the system operation.