Research On Application Of Flexible Series Compensation For Medium And Low Voltage Power Network In Rural Area

This paper aims at the problems existing in low-voltage 10 KV power grids in rural power grids,determines the installation location of the series-complementary devices according to the characteristics of the series-complementation technology,and studies and designs a new type of series compensation device structure to make this new flexible series compensation continuous,Quickly and smoothly adjust the voltage of the grid to compensate for lack of power grid.The working principle,basic structure,working mode and characteristics of flexible series compensation are studied.In addition,the space vector SVPWM algorithm is applied to the SSSC controller,and the SSSC control module is designed through the cross decoupling control strategy and space vector SVPWM algorithm.The simulation shows that the control strategy responds more quickly and the overshoot is smaller when processing each step instruction.In addition to better real-time tracking,you can basically achieve precise control of the system.Through the transient and steady-state simulation of the Zhangwu County 10 KV power grid,the influence of the input flexible TCSC on the system is compared.At the same time,the space vector SVPWM algorithm is applied to the flexible series compensator controller to compare and analyze its role in the power system operation.Through simulation,it is proved that the flexible series compensation effectively solves the problems of rural network lines,and plays an important role in improving the system stability,increasing the line transmission capacity,and suppressing the power oscillation.