State adjustment method for performance testing of multi-stage compressor with high total pressure ratio

The invention relates to a state adjustment method for performance testing of a multi-stage compressor with a high total pressure ratio. On the basis of combined and coordinated adjustment of four physical parameters including a compressor rotating speed, a compressor adjustable stationary guide blade angle, a tester intake throttle valve opening degree, and a tester exhaust throttle valve openingdegree, the test working state of the compressor is controlled. The working state of the compressor is controlled to be in a region near of blocking points of all equal-rotating-speed working lines to carry out speed increasing and decreasing. On the condition of multi-row stationary guide blade single adjustment, successive adjustment from back to front in a rotating speed increasing state and successive adjustment from front to back in a rotating speed decreasing state are carried out, so that the need of in-stage matching rule optimal adjustment of the compressor at a non-designing rotating speed is met. According