Substation transformer low-voltage side no-load impact test system

The invention discloses a substation transformer low-voltage side no-load impact test system, and the system comprises a low-voltage main loop module which is used for achieving the connection between an external power supply or a power module and the low-voltage side of a substation transformer; the delay on-off module is used for realizing delay starting of the low-voltage main loop module; the current measurement module is used for acquiring a three-phase current signal; the voltage measuring module is used for acquiring a three-phase voltage signal; the protection control module is used for controlling the test process, judging the state of the transformer according to the current and voltage signals, and disconnecting the low-voltage main loop module under the unqualified condition; and the power supply module provides low-voltage alternating-current power for the system. According to the invention, the insulation performance and the mechanical strength of the newly put-into-operation transformer can be