High-speed synchronous signal phase self-adaption method and system based on FPGA (Field Programmable Gate Array)

The invention discloses a high-speed synchronous signal phase self-adaption method and system based on an FPGA (Field Programmable Gate Array), and relates to the technical field of relay protection of a power system. In order to solve the defect of error codes caused by phase compensation in the existing high-speed signal transmission, pseudo-random data is generated by using a pseudo-code generator built in the FPGA, and a judgment result is received by using the self-correlation characteristic of the pseudo-random data; adjusting a sending clock phase, and obtaining correlation peak values corresponding to all receiving phases after the sending phase is adjusted; comparing all the obtained correlation peak values with a threshold value to obtain a target phase combination, and respectively adjusting the phases of the sending clock and the channel associated clock; and after the phase adjustment is completed, the FPGA sends a phase adjustment ending interrupt to the CPU, and the CPU sets the RGMII interface