30-degree phase angle difference line loop closing and power adjusting system

The invention provides a 30-degree phase angle difference line loop closing and power adjusting system which comprises a 220kv main transformer, a 35kV power supply loop line and a 110kV power supply loop line. The first output end of the 220kv main transformer is connected to a 35kV power supply loop line; a second output end of the 220kv main transformer is connected to a 110kV power supply loop line; the 35kV power supply loop line is provided with five 35kV impedors, and each 35kV impedor is provided with a control switch in a matched mode. A 110kV main transformer is arranged between the 35kV power supply loop line and the 110kV power supply loop line; a 110kV side impedance is arranged on the 110kV power supply loop line; the 110kV side impedance position is provided with a 110kV side switch; according to the written power adjusting scheme, 30-degree phase angle difference line loop closing operation is carried out one by one, deviation is corrected and calculated in time, and loop closing experience is