All-in-one transformer comprehensive test system

The invention discloses an all-in-one transformer comprehensive test system, which comprises a pull rod type operation case, a central processing unit, a direct current generation module, a direct current switching module, an alternating current generation module, an alternating current switching module, an alternating current and direct current measurement module, a complete machine protection module and a man-machine interaction module. The pull rod type operation case serves as an instrument carrier, the man-machine interaction module is connected with the central processing unit, and the central processing unit is in interactive connection with the direct current generation module, the alternating current and direct current measurement module and the alternating current generation module; the system is integrally designed, pull rod operation and wiring are simple, transformer direct-current resistance testing, on-load tap-changer testing, transformation ratio testing and residual magnetism demagnetization can be completed for a main transformer of a power system through one-time wiring, short-circuit impedance testing can be completed only through one-time wire reversing, an external voltage regulator is not needed, five functions are truly integrated, field use is greatly facilitated, and manpower and material resources are saved.