In order to ensure the safe and stable operation of the power system, it is necessary to improve the correct action rate of relay protection and better meet the requirements of safe operation of the power system. The integrated automation system of relay protection enhances the efficiency and reliability of relay protection and plays a significant role in ensuring the safe and stable operation of the power grid. Here, we put forward the concept of integrated automation system of power grid relay protection, and explain the system structure, function and implementation method. Keywords: relay protection, automation system Relay protection work is technical knowledge-intensive, and requires high sense of responsibility and technical level. We can only take targeted measures to solve existing problems by studying the specific situation of the network in depth and detail, treating each work carefully and meticulously, abiding by the regulations, improving the drawings, and striving to master the hardware circuit composition of microcomputer protection, the software to realize the logical function, and the general principles and laws of protection, gradually accumulating experience, and further understanding the main problems of protection work. Microcomputer protection is a relay protection device that has developed rapidly in recent years. Because of its reliable performance compared with integrated protection, the complex principles are all realized by software, the hardware circuit is modularized, has strong versatility, is simple to debug and maintain, and has a low probability of false operation, it is increasingly being applied to actual production work. With the widespread application of microcomputer relay protection devices and the continuous improvement of the comprehensive automation level of substations, the analog quantities, switch quantities, and primary equipment status quantities collected by various intelligent devices have greatly increased, and operators can obtain more real-time information of primary and secondary equipment from them. However, since the current microcomputer-based secondary equipment is more concerned with replacing the functions of previous equipment, these devices are basically operated independently, resulting in a large amount of information collected by them being lost in vain and not being fully utilized. The power grid is an indivisible whole. The comprehensive utilization of the primary and secondary equipment information of the entire power grid is of great significance to ensuring the safe and stable operation of the power grid. In recent years, the rapid development of computer and network technology has made it possible to comprehensively utilize the primary and secondary equipment information of the entire power grid [1-3].
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