针对井下不平衡工况会导致STATCOM控制性能变差、影响补偿效果的问题,提出采取改进开关函数法及负序电压前馈控制策略,让STATCOM发出一个与系统负序电压大小和相位都相等的负序电压,来补偿系统负序电压,保证了STATCOM在不平衡工况下的正常运行。仿真结果表明,该控制策略起到了抑制负序电流的作用,有效克服了三相不平衡的影响。

以工矿企业35 kV/6 kV变电站为研究应用背景,提出一种应用于大功率STATCOM的谐波与无功综合电流补偿控制策略。在治理谐波方面,采用了一种基于多个n次谐波同步旋转变换的谐波低频补偿技术,能够对低次谐波进行补偿控制;在基波无功的动态补偿方面,采用前馈闭环解耦控制,能够精确、动态地补偿基波无功电流。从而实现了谐波和无功的综合补偿。

STATCOM硕士论文,值得看一下，广西大学的硕士论文

Abstract——Injection of the wind power into an electric grid affects the power quality. The performance of the wind turbine and thereby power quality are determined on the basis of measurements and the norms followed according to the guideline specified in International Electro-technical Commission standard, IEC-61400. The influence of the wind turbine in the grid system concerning the power quality measurements are-the active power, reactive power, variation of voltage, flicker, harmonics, and electrical behavior of switching operation and these are measured according to national/international guidelines. The paper study demonstrates the power quality problem due to installation of wind turbine with the grid. In this proposed scheme STATic COMpensator (STATCOM) is connected at a point of common coupling with a battery energy storage system (BESS) to mitigate the power quality issues. The battery energy storage is integrated to sustain the real power source under fluctuating wind power. The STATCOM control scheme for the grid connected wind energy generation system for power quality improvement is simulated using MATLAB/SIMULINK in power system block set. The effectiveness of the proposed scheme relives the main supply source from the reactive power demand of the load and the induction generator. The development of the grid co-ordination rule and the scheme for improvement in power quality norms as per IEC-standard on the grid has been presented.