| Distribution network is extremely essential for users to connect the transmission network with themselves,and plays an important role in the distribution of electric energy in the power system.However,the emergence of distributed energy leads to the more complex structure of the current distribution network,and various emergencies emerge endlessly,which affects the voltage quality and brings unstable factors which wil destroy the stability and superiority of the power system.Reactive power optimization technology is one of the core technologies for active control and management of distribution network,aiming at controlling controllable resources,realizing their active participation in system operation,reducing the adverse effects of distributed energy grid connection,and ensuring the security,economy and reliability of system operation.Therefore,based on the new particle swarm optimization algorithm which behaves better than traditional particle swarm optimization algorithm,this paper will make an intensive study of reactive power optimization technology of distribution network with distributed power.First of all,the research background and significance of this topic are briefly introduced,and the current development status of distributed power supply and reactive power optimization research status are analyzed respectively,and the advantages and disadvantages of various solutions for reactive power optimization are comprehensively summarized and analyzed.Secondly,in order to better conform to the real demand of reactive power optimization of power system,the objective function is set to multiple.In meet the constraint conditions under the premise of distribution network,based on the standard particle swarm algorithm in solving multi-objective reactive power optimization problem existing in the process of real-time performance,easy to fall into local most superior defects by introducing the adaptive inertia weight and dynamic adjust the parameter to the improvement of the standard particle swarm algorithm multi-objective reactive power optimization to gain the optimal solution.Finally,combined with the actual demand,active distribution network system is established with target of minimizing the minimum network loss and voltage fluctuation mathematical model,using improved particle swarm algorithm proposed in this paper can be solved by IMPSO containing distributed power distribution network in reactive power optimization problem,the IEEE-33 node power system as an example of simulation shows that the presented algorithm validity and superiority.The results show that the voltage amplitude and active power loss of the system are optimized obviously after reactive power optimization based on the improved algorithm proposed in this paper,which improves the reliability and security of distribution network operation.The applicability of the reactive power optimization model and the effectiveness of the improved particle swarm optimization algorithm are verified. |
