Using active filter compensation cabinet to control harmonic case diagram
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Schematic diagram of 10kV harmonic control implementation
The test point is tested and tested on the secondary side of the 10kV transformer. The transformer ratio is 2000:1. The 11th and 13th harmonic current data before and after the filter operation are as shown in the figure: 
From the above figure, we can see that after the active filter compensation cabinet is running, the total current distortion rate drops to 1.6%; when converted to the primary side of 10kV, the 11th harmonic current is reduced from 10A to 2A, and the 13th harmonic current is from 8A. Reduced to 2A, meeting the national standard requirements for harmonic currents of 10kV.
It is concluded that the active filter compensation cabinet is the best harmonic control method. It is completely feasible to use the active power filter to perform harmonic control on the high voltage side, because of the superiority of the active filter compensation cabinet in harmonic control. This scheme has become the main way of high-voltage side harmonic suppression and has a strong promotion value.
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