三相四线制D-STATCOM并联运行技术研究  

Research on Parallel Operation Technology of Three-phase Four-line D-STATCOM

作　　者：郭学成[1] 常鲜戎[1] 刘凯靖 娄晓琪[1] 

机构地区：[1]华北电力大学,新能源电力系统国家重点实验室,河北保定071003

出　　处：《电力电子技术》2017年第4期38-40,共3页Power Electronics

摘　　要：单台配电网静止同步补偿器(D-STATCOM)的容量通常不能满足系统容量需求,可采取D-STATCOM并联运行来提高补偿容量。对于并联运行,提出一种直流侧母线独立结构的改进分散控制策略,该方法不仅可靠性高,还能实现补偿容量的合理分配。通过检系统侧电流与检负载侧电流相结合,既保证了并联系统运行稳定,又保证了补偿精度。Simulink仿真验证了控制策略的有效性。搭建了两台容量为50 kVA的D-STATCOM实验样机,实验结果表明,D-STATCOM能较好地跟踪补偿指令电流,实现补偿容量合理分配。The capacity of the single distribution static synchronous compensation （D-STATCOM） cannot satisfy the re- quirement of the compensation capacity, D-STATCOM parallel operation is an optimal method to solve it.For parallel operation, a method about direct current side independent bus structure and improvement distributed control strategy is put forward.This method has high reliability, and can realize the rational distribution of compensation capacity. Through the combination of the system current measurement and the load current measurement, the stability of the parallel system and the accuracy of the compensation are both ensured.The effectiveness of the control strategy is ver- ified by simulation analysis.Two 50 kVA prototypes of D-STATCOM are set up.Experiment show that D-STATCOM can effectively track the compensation current and realize the reasonable distribution of compensation capacity.

关 键 词：静止同步补偿器 并联运行 补偿容量 

分 类 号：TN715[电子电信—电路与系统]