Method and system for replacement test of components of relay protection device

The invention discloses a method and system for replacing and testing components of a relay protection device, and belongs to the technical field of power grid secondary devices. The method comprises the following steps: acquiring basic parameters of the relay protection device, and determining the composition of components in the relay protection device according to the basic parameters so as to determine the main functions of the components and the mode of realizing a certain function together with other components; classifying the components based on the main functions of the components and the mode of realizing a certain function together with other components; obtaining a test strategy according to a test principle and an actual condition caused by the replacement chip; and testing the to-be-replaced component according to the test strategy to obtain a test result which is used for guiding replacement of the component of the relay protection device. The test method can effectively reduce test items and t