The microcomputer relay protection tester is the primary electrical equipment of the power system, which is related to the safe and stable operation of the entire power system. With the continuous expansion of power system planning, the widespread use of ultra-high-voltage large-capacity transformers has put forward higher requirements for the performance of transformer protection. In the past ten years, the use of microcomputer skills has greatly promoted the development of transformer protection principles and completion skills.
 

    The fundamental function of transformer relay protection is to protect the safety of the transformer. When the transformer has internal or external faults, it can quickly and reliably act on the switch to trip, remove the faults, ensure the safe operation of the power system, and protect the transformer from damage. This article talks about the protection and protection equipment questions of the microcomputer relay protection device from the technical point of view.
 

    The microcomputer protection equipment standard of the microcomputer relay tester is basically the same as the conventional protection equipment, but due to the characteristics of the microcomputer protection software, the microcomputer protection equipment is usually more complete and sensitive. The microcomputer protection of the microcomputer relay protection tester is similar to the line microcomputer protection in hardware. Due to the special request for protection, it has outstanding characteristics in software.