Reactive power and imbalance treatment control method and device for three-phase system of low-voltage power distribution network

The invention belongs to the technical field of low-voltage power distribution networks, and particularly relates to a low-voltage power distribution network three-phase system reactive power and imbalance treatment control method and device. The control method comprises the following steps: acquiring a three-phase active current value and a three-phase reactive current value; based on a given working mode and the three-phase active current value or the three-phase reactive current value, obtaining an active compensation current instruction or a reactive compensation current instruction to realize active current compensation or reactive current compensation; the given working modes comprise a constant reactive mode, a reactive compensation mode, an unbalanced current compensation mode, an unbalanced and reactive compensation mode and a reactive and unbalanced compensation mode. By designing a constant reactive power mode, a reactive power compensation mode, an unbalanced current compensation mode, an unbalanc