Thyristor controlled reactor and its effect on distribution network

A thyristor controlled reactor is introduced. The structure of this reactor is different from the traditional model as it is the integration of a traditional grounding transformer and reactor. A reactor with three phases and five columns can realize automatic trace and compensation for the capacitive charging current to ground of distribution network by the method of thyristor controlled inductive current of secondary winding. Furthermore, the neutral grounding via reactor will change distribution of the one-phase to ground fault current significantly. The present ground-fault protection cannot be applied to this kind of distribution network. A novel method of ground-fault protection is also presented.