Research On Intelligent Reactive Compensation Capacitor Switching System

In recent years,the wide application of power electronic equipment and inductive load in low voltage distribution network has put forward higher requirements for power quality.Traditional reactive power compensation devices often have some problems such as low compensation accuracy and slow compensation speed.In this context,this thesis studies the switching system of intelligent reactive compensation capacitor to make up for the disadvantages of traditional reactive compensation devices,which is of great significance for the reactive power compensation of low-voltage distribution network.The specific research contents and methods of this thesis are as follows:(1)Through the investigation of reactive compensation capacitor,the switch control of intelligent reactive compensation capacitor is studied,and the correctness of the theory is verified by building a simulation model.Firstly,the switching technology of reactive compensation capacitor is analyzed,and the operation characteristics of magnetic latching relay are tested.On this basis,MATLAB/Simulink is used to build the equivalent model of intelligent reactive compensation capacitor switching and the simulation results are analyzed.(2)Realize the intelligent reactive power compensation capacitor switching system based on AD hoc network.The communication principle and implementation method of intelligent capacitor switching system are discussed in detail.On this basis,combined with the compensation characteristics of co-complement capacitor and distributive capacitor,the cyclic switching control strategy in co-complement mode,optimization switching control strategy in co-complement mode,cycle switching control strategy in sub-complement mode and optimization switching control strategy in sub-complement mode are proposed.(3)Realize the intelligent reactive power compensation capacitor switching system based on particle swarm optimization algorithm.The particle swarm optimization algorithm was applied to the field of reactive compensation capacitor switching,and the simulation model of intelligent reactive compensation capacitor switching control system was built.The feasibility of the switching system was verified by the simulation results.(4)Computer experiments were conducted on the switching of intelligent reactive compensation capacitors,AD hoc networking and the switching system of intelligent reactive compensation capacitors based on AD hoc networking.By observing experimental data such as experimental waveform and compensation effect,the system could quickly and efficiently carry out reactive power compensation to the power grid,and finally passed the acceptance of Deli Electric limited company,LTD.,and entered the stage of production.By means of simulation,the switching process of intelligent reactive compensation capacitor switching system based on particle swarm optimization algorithm is simulated and the correctness of the system is verified.