Power distribution network closed loop point comprehensive selection method

The invention discloses a power distribution network closed loop point comprehensive selection method comprising the following steps: obtaining power distribution network parameter information, and numbering all standby transformer areas; according to the parameter information of the power distribution network, calculating and judging whether the operation condition of the power distribution network meets the condition requirement after loop closing and power supply of each standby transformer area; calculating and judging whether the voltage phase difference between the node of the to-be-maintained power supply main area and the node of each standby area meeting the operation condition requirement meets the condition or not; calculating and judging whether each steady-state loop closing current meets the requirement after loop closing; various indexes are calculated, and a comprehensive index of each standby transformer area is obtained by combining the pre-calculated weight of each loop closing index; and s