Flexible transformer test circuit, test method, test system, equipment and medium

The invention provides a flexible transformer test circuit, test method, system, device and medium, the flexible transformer test circuit comprises a power supply side voltage transformer 12, a control winding voltage transformer 14, a test converter 10, a test power supply 11 and a test function module, the power supply side voltage transformer 12 is connected with a power supply side winding 1 of a tested flexible transformer to form a loop; the control winding voltage transformer 14 is connected in parallel with a bypass circuit 7 of an energy injection converter 6 in the flexible transformer, one end of the test function module is connected with a load side winding 2 of the flexible transformer, the other end of the test function module is connected with the bypass circuit 7 to form a loop, and the direct current side of the test converter 10 is connected with the direct current side of a winding energy taking converter 5 of the flexible transformer. The alternating current side of the test converter 10 i