三角形链式 STATCOM 在负载不平衡补偿中发挥着重要作用，是提高电能质量的重要手段． 文中通过理论分析，推导出三角形链式 STATCOM 在补偿额定无功电流时负序电流补偿范围的计算方法． 针对链式三角型 STATCOM 分相控制动态响应慢、精确度低的缺点，对三角形链式 STATCOM 采用分序控制，以实现无功和负序分量的综合补偿． 最后在 Matlab/Simulink 环境中搭建 ±10 kV·A/(380 V)三角形链式 STATCOM 对系统进行仿真，仿真结果证明了不平衡补偿范围计算方法及所采用控制策略的正确性．

The cascaded STATCOM with delta configuration plays an important role in the unbalanced load compen-sation,and it is an important means to improve power quality.In this paper,through theoretical analysis,a methodof calculating the compensation range of negative sequence current is proposed for compensating the rated reactivecurrent by using the cascaded 10kV·A/(380V) STATCOM with delta configuration.As the individual phase con-trol of the cascaded STATCOM with delta configuration shows a slow dynamic response and a low precision,the in-dividual sequence control is adopted to handle the cascaded STATCOM with delta configuration,thus realizing acomprehensive compensation for reactive and negative sequence components.Finally,in the Matlab/Simulink envi-ronment,a 10kV·A/(380V) STATCOM with delta configuration is built to simulate the system,and the resultsprove the correctness of the calculation method and the control strategy.