Abstract: As the issue of power quality becomes increasingly prominent in recent years, this paper has made a focused research on how to coordinate, control and operate several intelligent low-voltage power distribution equipments including reactive power compensation device, active power filter (APF), low-voltage three-phase load balancing equipment and pressure regulator and offered a technical plan for improving power quality. As per on-site trial operation, a systematic evaluation of effects of this intelligent coordination and control system on improving power quality is made.