Research Of Power System Voltage Stability And Reactive Power Optimization

Reactive/voltage control of the system can effectively guarantee the normal operation of power grid, ensuring that the system voltage stability and economy, put an end to the voltage collapse phenomenon.This research system reactive power optimization and voltage control problem, its are introduced, and the relationship between the system reactive power optimization model is established, to set the target function and constraint conditions.The main research focuses on the classification problem of reactive power control system and reactive power compensation equipment configuration problems.Voltage hierarchical control based on the modern power grid scale more and more on the basis of the most effective voltage control method, the whole system is divided into several sub areas, and control, respectively, the problem is how to make the system partition.The proposed near system voltage near the critical point method for system partition, considering the active power and reactive power of the node voltage combination, convenient to determine the strength of the coupling, and finally with the improved dynamic partitioning method for system partition is calculated.Research on the system configuration problem of reactive power compensation equipment, it mainly includes the reactive power source configuration location, problem sets, compensation capacity.According to the system voltage/reactive power control with partitioning features based on dominant node reactive compensation method of determining the location of the reactive power source the best configuration.Dominant node selection optimization of reactive power compensation model is established, and an iterative algorithm is put forward.Method by an example analysis shows that the effectiveness and superiority.Then combining with the system stability and economy, put forward to determine method of reactive power equipment configuration.Finally this paper introduces the two kinds of the optimization of reactive power compensation capacity target model.