Dynamic Reactive Power Optimization of Active Distribution Network Considering Voltage Stability
The dynamic reactive power optimization of active distribution network with stable voltage and the access of high proportion of distributed generation will cause serious local voltage line crossing problem,and the dynamic reactive power optimization of distribution network is an important guarantee for the safe and stable operation of distribution network.A dynamic reactive power/voltage regulation strategy for active distribution network considering voltage stability was proposed.Based on the operation characteristics of distributed generation and the daily load curve of the network,a dynamic reactive power/voltage model for active distribution network considering voltage stability and low network loss was established,taking into account the constraints of the number of actions of capacitor banks,SVC and other reactive power voltage regulation devices;a dynamic weight particle swarm optimization algorithm based on Cauchy mutation was proposed.During the evolution of particle swarm,the optimization speed of the algorithm was improved by dynamically adjusting the weight factor and learning factor,and the ability of the algorithm to jump out of the local optimal solution was improved by Cauchy mutation;finally,the feasibility and rationality of the method are verified by a simulation example.The optimal distribution of reactive power flow in an active distribution network can be achieved by reasonably controlling the action time of the reactive power regulating equipment in a day,and the security and stability of the system operation can be improved.
dynamic reactive power optimizationvoltage stabilityactive distribution networkmulti objective optimizationimproved particle swarm optimization
万方数据
维普
