【摘要】 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。更多还原

【Abstract】 Applying individual-phase unbalanced control to STATCOM based on multiple-inverter configuration under asymmetric power system,it not only can generated the required positive voltages,but also can generated negative voltages which is used to offer resistance to system negative voltage,and enhance viability of STATCOM in actual environment.According to the main power circuit configuration of±20Mvar STATCOM equipment,a method of the individual-phase unbalanced control based on all phase-shifted for STATCOM,δunbalanced control method,is proposed and the detailed algorithm is given in this paper.The harmonic generated and the compensating ability provided by applyingδcontrol strategy to STATCOM are analyzed and discussed.Comparing simulation results ofδmethod with which of other unbalanced control method,the validity and feasibility of the proposed method are confirmed.更多还原