The Research Of Base On Recursion Least Squares Voltage Flicker

With the rapid development of moderm industrial technology and national economics, power quality has become an important index that every department of electrical companies pays much attention to. With the forming and boosting of electricity market reformation, the utility must meet the increasing requirement of not only power quantity but also power quality from customer.To effectively improve the power quality, we need to research on the voltage flicker. It was adopt adequate measures reduce flicker bring influencing premise that analyze voltage flicker. Wherefore real-time trace voltage flicker 'envelope and initial phase angle proceed with possess important theory sense and practical meaning among power system. In the paper put forward a new modified recursion least square method track flicker envelope and initial phase angle. It trace voltage flicker quickly and exactly.Act as routine dispose signal estimation route to, recursion least square method possess in a position to at approximate time bring relative comparison small error. It was a sort of iterative form,all for iterative algorithm have to do is to aloft once with the result that foundation gotten ahead travel one step operation,instead of demand should data completeness collection finish later, versus all data together count with,so the means relatively rest some algorithm has small operand. In the paper it conquer the shortcoming of routine recursion least square method that is error would be larger in tracking two or two more parametric in same time.It is amplitude value transform slowness, are a sort of low frequency signal to that of voltage flicker characteristic. But by reason of routine least square method are...