Optimization Of The Grid Harmonic Detection Scheme Based On Morphological

With the rapid development of modern economic and industrial technology, theincreasing, the application of a variety of electrical installations degree of automationand equipment, so that the nonlinear loads in the power system network continued toincrease, which also makes the hazard electricity gridharmonic component of thesecurity constantly accumulated. Therefore, in order to safeguard the security andstability of the power system run better, it is necessary to harmonic problems in-depthresearch, eliminate and reduce harmonic users harmonic impact is reduced to within theallowable range.First, we detail the advantages and disadvantages of the comparison and analysisof the existing harmonic detection method, select this optimization program is toestablish the instantaneous reactive power harmonic detection method based oninstantaneous reactive power through power detection method front end theinstantaneous component symmetry method optimized, so that it in Harmonic Detectionusing a wider range, and can be detected in the case of asymmetric grid three currentfundamental component. Affect the instantaneous reactive power detection method, thekey part is the accuracy of the filter to remove the effect of harmonics and phase-lockedloop module lock, so this gives the optimized detection programs a key part of the threephase-locked loop sub-module and mathematical and simulation model of adaptivemorphological filter part of the detailed design, to enable them to more effectively filterout harmonic components ofthe fundamentalcomponent reserved.Secondly, through the the powerful MATLAB/SIMULINK system simulationtools in simulation, and based on the traditional method of detection based on the low-pass filter of instantaneous reactive power theoryand instantaneous reactive power afterthis article optimization improved overall detection program given its morphological filters optimized process flow diagram, and the overall program in various parts of thesimulation block diagram.Finally, by comparing the simulation results of the two methods can be clearlyseen using optimum design can be faster and more accurate than the traditionalinstantaneous reactive power of the low-pass filter assay to detect and isolate thefundamental component to verify the effectiveness and feasibility of the optimizationprogram.