动态无功补偿器的负序分量和特征谐波补偿算法  

The Algorithm of Negative Vector and Characteristic Harmonic Compensation for Dynamic Reactive Power Compensator

作　　者：卢婧婧[1] 解大[1] 张延迟[2] 艾芊[1] 

机构地区：[1]上海交通大学电气工程系,上海200240 [2]华东理工大学自动化系,上海200237

出　　处：《低压电器》2010年第2期57-60,66,共5页Low Voltage Apparatus

摘　　要：从能量保持恒定的角度,采用直流侧电压控制方法,对三相动态无功补偿器进行设计。抑制通过对稳定谐波源进行谐波分析,提取其特征谐波进行补偿,可以起到补偿无功和谐波的作用。仿真结果表明,在不对称谐波源情况下,叠加负序分量补偿后的三相系统电流完全对称,并可滤除负荷特征谐波含量。采用上述算法的动态无功补偿器可以通过对负荷的分析,根据负荷及实际的装置进行控制策略调整,具有较大的工程实际意义。The control strategy of DC voltage was designed based on energy invariableness on DC voltage. For a harmonic load which contains harmonic with certain characteristic frequencies, the characteristic harmonic current at the certain frequency can also be compensated after analysis on the harmonic load, and it could compensate the reactive power and harmonic together. The simulation results showed that the compensated three-phase currents considering the negative vector were balanced under an unbalanced and harmonic load, and the characteristic harmonic component was also depressed. The dynamic reactive power compensation based on the algorithm could adjust its control methods by the load and the device through the analysis on the load. This design had great practical significance.

关 键 词：无功补偿 不对称 负序分量补偿 谐波抑制 仿真 

分 类 号：TM714.3[电气工程—电力系统及自动化]