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多重化结构的STATCOM装置采用分相控制后,除产生正常的正序电压外,还能产生要求的负序电压以抵抗系统负序对装置的破坏性影响,提高装置在系统不对称情况下生存和工作能力。针对三单相四重化结构的±20MvarSTATCOM装置,提出一种基于全相位δ变化的分相不对称控制方法,并给出详细的控制算法;同时对采用该控制后,STATCOM装置在谐波产生以及负序补偿能力等方面问题进行分析和研究。通过与其它控制方法的仿真结果比较,验证了所提方法的正确性和有效性。
Multiphase STATCOM devices using phase-separated control, in addition to produce a normal positive sequence voltage, but also generate the required negative sequence voltage to resist the system negative sequence destructive effect on the device to improve the device in the case of system asymmetry survival And working ability. Aiming at the ± 20MvarSTATCOM device with three single-phase quadruplex structure, a phase-insensitive control method based on all-phase δ variation is proposed and a detailed control algorithm is given. At the same time, As well as the negative sequence compensation ability and other aspects of the analysis and research. Compared with the simulation results of other control methods, the correctness and effectiveness of the proposed method are verified.