APFThe active filter is placed at the front end of the load (with a set of transformers)

As shown in the figure,APFThe active filter is placed between the reactive power cabinet and the load, and a set of sampling transformers is configured. The sampling current transformer is placed inAPFActive filterBetween the main connection point of the wave generator and the load connection point, in the direction of the power gridP1toP2Collect all load currents.

(Note: A set of three transformers, sequentially numbered as)CT1TheCT2TheCT3.)

APFThe active filter is placed at the end of the power distribution, and the reactive power cabinet is located at the front end (with two sets of transformers)

As shown in the figure, due toAPFActive filter sampling requires the acquisition of pure load current. When the active filter is located at the end of the distribution, it needs to be configured2 Group samplingTransformer, Section1 The group is placed at the back of the reactive power cabinet (in the direction of the power grid)P1toP2, collecting load and active filter's own current)2 Group placed inAPFFront end of active filter cabinet (along the direction of the power grid)P2toP1Collect the current of the active filter itself, subtract the two sets of transformers to obtain the pure load current(Excluding)APFThe current of the active filter itself.

(Note: A set of three transformers, with the first set numbered sequentially as)CT1TheCT2TheCT3The second group is numbered sequentially asCT4TheCT5TheCT6.)

APFThe active filter is placed at the end of the power distribution, and the reactive power cabinet is located at the end (with two sets of transformers)

As shown in the figure, due toAPFActive filter sampling requires the acquisition of pure load current. When the active filter is located at the end of the distribution, it needs to be configured2 Group samplingTransformer, Section1 Place the group at the front end of all loads (in the direction of the power grid)P1toP2Collect the current of the load, reactive power cabinet, and active filter itself2 Place the group at the front end of the reactive power cabinet (in the direction of the power grid)P2toP1Collect the current of the reactive power cabinet and active filter, subtract the two sets of transformers to obtain pureNet load current (excluding reactive power cabinet andAPFThe current of the active filter itself.

(Note: A set of three transformers, with the first set numbered sequentially as)CT1TheCT2TheCT3The second group is numbered sequentially asCT4TheCT5TheCT6.)