Testing platform and method for wind power converter chopper device

The invention discloses a testing platform and method for a wind power converter chopper device. The testing platform comprises a power grid access interface, a first isolation transformer, a second isolation transformer, a double-feed converter and a machine side breaker, wherein the power grid access interface is externally connected with a power grid, and is connected with one ends of the first isolation transformer and the second isolation transformer; the other end of the first isolation transformer is connected with the line side of the double-feed converter; the other end of the second isolation transformer is connected with the machine side of the double-feed converter through the machine side breaker; during a test, the power grid access interface, the first isolation transformer, the second isolation transformer and the machine side breaker form a power test loop which is connected with the chopper device to be tested through the double-feed converter. According to the invention, the low voltage ride-through failure is simulated through software to test the electrical performance of the chopper device, so that the test is flexible, convenient, economical and practical, and has good application prospect.