串联型电压暂变补偿器的补偿深度研究

Research on Compensation Depth of Series Voltage Variation Compensator

针对一种串联型电压暂变补偿的主电路拓扑,其补偿深度有限,即当电网电压发生严重跌落时,拓扑无法完成补偿的问题,分析了影响动态电压暂变补偿深度的因素,提出了在负载侧并联静止无功发生器(SVG)的方法来改变原拓扑的负载功率因数角,进而改变负载功率因数,最终实现增加动态电压暂变补偿深度的效果。相比较没有并联SVG的串联型电压暂变补偿主电路拓扑,并联SVG后的新拓扑的动态补偿深度增加了。最后利用Matlab/Simulink仿真软件搭建了物理仿真模型,验证了在负载侧并联SVG增加动态补偿深度的可行性。

Aiming at a kind of series voltage transient variation compensation main circuit topology,in order to solve the problem that the topology can＇ t compensate when the grid voltage drops seriously,this paper analyzes the factors that affect the depth of dynamic voltage transient compensation. Load side parallel static reactive power generator （SVG） method changes the original topology of the load power factor angle,and then changes the load power factor, and ultimately increases the dynamic voltage transient compensation compensation depth effect. Compared to the parallel circuit with no parallel SVG,the dynamic compensation depth of the new topology after SVG is increased. Finally, a physical simulation model is established in Matlab/Simulink simulation software to verify the feasibility of in- creasing the dynamic compensation depth in parallel with SVG on the load side.