Journal of Electrical Engineering and Automation

Relay protection devices in smart grids play a crucial role in ensuring the safe and stable operation of the power grid. Improving the reliability of relay protection devices is key to maintaining the stable operation of the power system. This paper analyzes the influencing factors on the reliability of relay protection devices, including hardware, software, system integration, and power grid structure. It also proposes optimization strategies to enhance their reliability, such as hardware facility updates, intelligent algorithm optimization, and strengthened system collaboration. Through these measures, the response speed and accuracy of relay protection devices can be effectively improved, ensuring the efficient and stable operation of smart grids.

Smart grid; Relay protection device; Reliability enhancement; Fault early warning; Optimization strategy