针对配网静止同步补偿器(D-STATCOM)常用的基于负载电流检测方式的dq解耦控制在负载不平衡时补偿效果欠佳的问题,文中提出一种以单位功率因数为控制目标的基于电网电流检测方式的dq解耦控制方法。文中以电网电流为状态变量建立数学模型,并在dq变换的基础上,进行dq解耦PI控制器的设计。该方法省去了负载无功电流检测环节,简化了控制系统,且在负载不平衡的情况下也能取得较好的补偿效果。仿真结果验证了该控制方法的有效性和可行性。 Aiming at the problem of dq decoupling control based on load current detection commonly used in distributed static synchronous compensator (D-STATCOM) when the load imbalance is not well compensated, this paper proposes a power system based on the power factor Current Decoding Method dq Decoupling Control Method. In this paper, the mathematical model of grid current is established as the state variable, and the dq decoupling PI controller is designed on the basis of dq transformation. The method eliminates the need of load reactive current detection, simplifies the control system and achieves better compensation under unbalanced loads. The simulation results verify the effectiveness and feasibility of the control method.