静止无功发生器(SVG)的无功电流检测算法研究

静止无功发生器(SVG)是柔性交流输电系统的关键设备，在智能电网的发展中发挥着重要作用。基于SVG的相关理论，分析了基于瞬时无功功率理论的无功电流检测算法，并对其锁相环进行了改进，以适应三相电网的不对称性，设计滑动平均低通滤波器，以兼顾考虑其滤波性能的精确性和动态响应的快速性。最后，通过MATLAB软件来验证所提方案能够准确地检测无功电流，及时地跟踪负载电流的变化，具有很好的动态无功功率补偿性能。

Research on reactive current detection algorithm of Static Var Generator(SVG)

Static var generator(SVG)is an important device of FACTS to the development for smart grid.Based on the basis principle of SVG and instantaneous reactive power theory,the PLL of the reactive current detection algorithm is improved in case of three-phase power asymmetry,and a moving average filter is designed to improve the performance of the detection accuracy and dynamic response.Finally,MATLAB software is used to verify that the proposed scheme can accurately detect the reactive current,track the change of the load current in time,and has good dynamic reactive power compensation performance.