针对非线性负载引起的无功功率失衡和谐波干扰问题,提出了一种基于空域追踪算法的多通道无功补偿系统.通过空域追踪算法将待补偿的电能信号分解进入不同频带的信号子通道,可以更加精确地分析出需要补充的无功电流或电压信号,估计需要消除的谐波干扰.实验通过2类不同的待补偿电流信号进行了系统验证,2类信号的电流畸变率分别从系统补偿前的31.2％和11.2％,变为系统补偿后的0.16％和0.12％,证明了所述系统的矫正效能和准确性.%In this paper,a reactive power compensation system based on space tracking algorithm is proposed to solve the problem of reactive power imbalance and harmonic interference caused by nonlinear load.The power signal to be compensated is composed into signal sub-channels of different frequency bands through Null Space Pursuit,and the reactive current or voltage signals which need to be supplemented can be more accurately analyzed,and the harmonic interference to be eliminated is estimated.The experiment is made for system verification through two different types of current signals to be compensated,and it shows that the current distortions of the two kinds of signals are reduced from 31.2％ and 11.2％ before the system compensation to 0.16％ and 0.12％,after compensation respectively,proving effectiveness and accuracy of the system.
展开▼
