The embodiment of the utility model provides a controllable highly-resistance power distribution unit which comprises a controllable highly-resistance body, a controllable highly-resistance firewall, a first transitional framework arranged on the controllable highly-resistance firewall, an auxiliary reactor, an auxiliary reactor firewall, a second transitional framework arranged on the auxiliary reactor firewall, a wire disposed between the first transitional framework and the second transitional framework and a supporting insulator which is arranged on the auxiliary reactor firewall and used for supporting a low-voltage busbar. The controllable highly-resistance power distribution unit also comprises a low voltage switchgear connected with the auxiliary reactor through the supporting insulator, a valve group connected with the low voltage switchgear, a control protection screen corresponding to the valve group, an energy-obtaining reactor connected with the low voltage switchgear, and a valve control building for setting the valve group, the control protection screen and the energy-obtaining reactor. The low voltage switchgear can be a GIS switchgear. According to the utility model, floor space and consumption of frame steel can be saved; arrangement cost of the power distribution unit can be reduced; and security of the power distribution unit can be raised.