With the aim of improving the efficiency and standardization level of relay protection verification

a distributed automatic testing system for relay protection suitable for complex scenarios in substations is developed

which supports the manufacturing message specification(MMS)and communication message specification(CMS)communication protocols.A test model construction method based on the decoupled design of protection device functions and test items is proposed

which realizes the standardization of protection device test models for nearly a hundred program versions from different manufacturers of the same type.An automatic instantiation method based on substation configuration description(SCD)files and standard models is proposed to solve the problems of low efficiency and poor compatibility in the manual configuration of traditional test templates.A verification data interaction interface specification based on the Bluetooth protocol is proposed to achieve closed-loop control of the entire on-site verification process.An automatic testing implementation process for all types of relay protection that meets safety boundary conditions is established

which is successfully verified during on-site acceptance and regular verification of relay protection

effectively improving the level of intelligent maintenance of relay protection.